Device and method for performing limb exercises

Abstract

The present disclosure relates to the field of physical rehabilitation and fitness equipment and associated methods for performing controlled eccentric and concentric strength exercises. One embodiment relates to an exercising device for an individual in a lying or sitting position, the exercising device comprising: a base frame attachable to a structure that allows the individual to remain in a lying or sitting position, for example in a bed, a motion unit adjustably connected to the base frame, the motion unit having a telescopic arm, and a limb attachment component for receiving a foot of a limb of the individual and connected to the telescopic arm, wherein the exercising device is configured for translating the telescopic arm according to a predefined input to perform a force-time profile with eccentric and / or concentric strength exercises of the limb of the individual, and wherein the limb attachment component is configured for detecting plantar flexion in the foot.

Description

[0001] P7479PC00

[0002] 1

[0003] Device and Method for Performing Limb Exercises

[0004] The present disclosure relates to the field of physical rehabilitation and fitness equipment and associated methods for performing controlled eccentric and concentric strength exercises of a limb of an individual in a lying or sitting position.

[0005] Background

[0006] In the field of physical rehabilitation and fitness, a variety of devices and methods are known for strengthening the lower limbs through exercises that include both concentric and eccentric muscle movements. Traditional exercise machines, such as leg presses, are widely used in physiotherapy and fitness settings to improve muscle tone, endurance, and strength in the lower body. These devices typically require the individual to remain in an upright or seated position, with exercises performed in a manner that necessitates direct involvement of the individual’s body weight or active participation. However, many individuals with limited mobility, including those recovering from injury or surgery, elderly patients, or individuals with severe physical impairments, may find it challenging or even impossible to use such devices, as they are unable to bear weight on their limbs or maintain the required posture or are unable to move themselves from the hospital bed, and / or a wheelchair, into the exercise device.

[0007] Rehabilitation equipment for patients in lying or bed-bound positions exists to some extent, with some machines incorporating passive movement features that assist the limb's motion without requiring active engagement from the individual. These machines, however, often lack the ability to provide controlled eccentric and concentric exercises with variable resistance, which are essential for rebuilding muscle strength effectively. Without these features, patients may experience limited benefits in terms of muscle rehabilitation, as eccentric exercises — where muscles lengthen under tension — are particularly beneficial for muscle strengthening and are crucial in the recovery of functional movement capabilities.

[0008] Additionally, current devices used for passive or assisted exercise in a lying or bedbound position typically do not monitor the individual’s specific movements, which can provide valuable feedback regarding muscular control and rehabilitation progress. Without such monitoring, therapists and patients alike may have limited information on P7479PC00

[0009] 2 the specific movements being performed, making it difficult to assess progress or adapt the exercise regimen to suit the patient’s needs.

[0010] It is therefore an objective of the present disclosure to provide an improved exercising device that facilitates eccentric and concentric muscle exercises for individuals in a lying or sitting position.

[0011] Summary

[0012] The present disclosure relates to an exercising device for an individual in a lying or sitting position. In the preferred embodiment the exercising device comprises a base frame, preferably attachable to a structure, that allows the individual to remain in a lying or sitting position, for example in a bed. A motion unit can be provided, preferably adjustably connected to the base frame. A telescopic arm is preferably provided, preferably as part of the motion unit. A limb attachment component can be provided, preferably for receiving a foot of a limb of the individual. It is preferably connected to the telescopic arm.

[0013] In the preferred embodiment the exercising device is configured for translating the telescopic arm according to a predefined input, for example to perform a force-time profile with eccentric and / or concentric strength exercises of the limb of the individual. The device allows for dynamic adjustment of eccentric and concentric loads, ensuring that each concentric and each eccentric movement within a set can be independently adjusted on every repetition. One or more encoders can be provided to detect the end of each movement and automatically modifies the load for the next phase, enabling precise, repetition-specific resistance adjustments tailored to the user's preferences.

[0014] Advantageously the limb attachment component is configured for detecting plantar flexion in the foot. The inclusion of a limb attachment component capable of detecting plantar flexion can provide immediate feedback on the user's movements. This enables precise monitoring of exercise execution, ensuring proper technique and reducing the risk of injury.

[0015] The presently disclosed exercising device is designed for use by individuals in a lying or sitting position, making it suitable for bedridden or mobility-impaired users. This P7479PC00

[0016] 3 ensures that strength training and rehabilitation exercises are accessible to those who cannot perform load-bearing or traditional exercises.

[0017] By (linear) translation of the telescopic arm according to a predefined input, the device allows for the execution of controlled force-time profiles for eccentric (muscle lengthening) and concentric (muscle shortening) exercises. These types of exercises are critical for rebuilding muscle strength, improving mobility, and supporting functional rehabilitation.

[0018] The device may accommodate a wide range of user needs through adjustable parameters, including range of motion, resistance levels, and exercise duration. This makes it adaptable to various fitness and rehabilitation goals, from light therapeutic exercises to progressive strength training, enabling controlled and adaptable resistance profiles suited to the rehabilitation and fitness needs of individuals with limited mobility, while also enabling the monitoring of specific foot movements to enhance feedback and effectiveness of the exercise regimen.

[0019] The presently disclosed exercising device can advantageously be securely attached to a bed or similar structure, ensuring stability during use. The device is preferably portable and preferably also compatible with standard hospital setups. This further enhances its practicality for use in medical facilities. Hence, the presently disclosed exercise device may be an integrated part of a bed, but preferably the presently disclosed exercise device is separate from the bed, and in that regard an initial step of training an individual my be to transport the exercise device to the bed where the individual is located, and attach the base frame of the exercise device to the bed, most naturally at the foot of the bed, where some sort of structure normally is part of the bed and can serve as the attachment point of the presently disclosed exercise device.

[0020] The present disclosure further relates to a method for prevention of muscle loss in an individual by performing at least one eccentric and / or concentric strength exercise of a limb of the individual. In the preferred embodiment the method comprises the steps of: providing an exercising device, preferably the presently disclosed exercising device, laterally, longitudinally and / or rotationally adjusting the motion unit relative to the base frame to adapt to the limb of the individual, attaching a foot of the limb to the limb attachment component, defining at least one eccentric and / or concentric strength P7479PC00

[0021] 4 exercise for the individual in the form of a predefined input, and activating the exercising device based on the predefined input.

[0022] Muscle loss, whether due to aging, prolonged immobilization, or medical conditions, can significantly impair mobility and quality of life. The presently disclosed exercising device and method offer a systematic and effective approach to counteracting such muscle degeneration.

[0023] The presently disclosed method begins with providing an exercising device that aligns with the features and configurations described in the present disclosure. The presently disclosed exercising device is designed to facilitate controlled and adaptive strength exercises of an individual, such as a bedridden patient, in a lying or sitting position. By utilizing a device with these capabilities, the presently disclosed approas ensures a high degree of customization and safety for the user. As the presently disclosed device advantageously is portable and transportable, the exercising device can be transported to the individual in need of exercise, instead of transporting the individual to the exercising device. The exercising device can advantageously be attached to an end or bedside of the individual’s bed.

[0024] The motion unit of the exercising device is preferably adjusted by lateral adjustment, longitudinal adjustment and / or rotational adjustment, relative to the base frame to accommodate the user’s specific anatomical requirements. These adjustments ensure that the limb attachment component is precisely aligned with the individual’s limb, enabling proper engagement of the targeted muscles during exercises. Proper alignment is critical for achieving the desired therapeutic or fitness outcomes and for minimizing the risk of injury or strain. Feedback or guidance from an alignment unit, as described herein, may assist in this adjustment process, improving accuracy and efficiency.

[0025] Once the motion unit is properly positioned, the foot of the individual's limb may be securely attached to the limb attachment component. The component is designed to hold the foot firmly, providing stability during exercise. This secure connection ensures that the applied forces are transmitted effectively, enabling controlled eccentric and concentric movements. Additional features, such as pitch of the limb attachment component or the use of pressure sensors on the limb attachment component, may be P7479PC00

[0026] 5 incorporated in the limb attachment component to monitor flexion and / or pressure difference at different parts of the sole of the foot and provide feedback on the technique of the individual.

[0027] The presently disclosed method may include defining one or more eccentric and / or concentric strength exercises in the form of a predefined input. The predefined input comprises parameters such as the range of motion, resistance level (corresponding to load), exercise duration, and force-time profiles. These parameters can be entered into the control system of the device, allowing for a customized exercise session tailored to the individual’s strength, rehabilitation stage, and therapeutic goals.

[0028] Following parameter definition, the exercising device can be activated based on the predefined input. The control system translates the input into controlled motions of the telescopic arm, enabling the individual to perform eccentric and concentric movements. During the eccentric phase, the muscles lengthen under tension as the telescopic arm extends, providing essential strength-building stimuli. During the concentric phase, the muscles contract and shorten, completing the movement. A force generator of the device may provide for the necessary resistance, simulating real-life movement dynamics and facilitating effective muscle engagement.

[0029] As stated above, the limb attachment component may be configured for detecting plantar flexion in the foot. In preferred embodiments, the control system uses the detected plantar flexion in the foot via the limb attachment component to adapt or control the force-time profile during eccentric and / or concentric exercise. Preferably adapted and / or controlled in real-time during the exercise.

[0030] The presently disclosed device and method represent a comprehensive and adaptable approach to preventing muscle loss, particularly in individuals who are bedridden, elderly, or undergoing rehabilitation. By leveraging the features of the exercising device, the method ensures targeted, effective, and safe muscle engagement, improving overall strength, mobility, and quality of life.

[0031] Description of Figures

[0032] Various embodiments are described hereinafter with reference to the drawings. The drawings are examples of embodiments and are intended to illustrate some of the P7479PC00

[0033] 6 features of the presently disclosed exercising device and method, and are not limiting to the presently disclosed device and method.

[0034] Fig. 1-7 shows different views of one embodiment of the presently disclosed exercising device 1 , designed to allow an individual to perform eccentric and concentric strength exercises of the lower limbs while in a lying or sitting position.

[0035] Fig. 1 Side view of the exercising device 1.

[0036] Fig. 2 Side view of the exercising device 1 attached to a structure 3 where the individual can sit or lay down and perform eccentric and concentric strength exercises of the lower limbs.

[0037] Fig. 3 Side view of the exercising device 1 illustrating that the motion unit 4 can be adjusted by longitudinal adjustment LOA for adaptation to the individual.

[0038] Fig. 4 Side view of the exercising device 1 illustrating that the motion unit 4 can be adjusted by lateral adjustment LAA for adaptation to the individual.

[0039] Fig. 5 Top view of the exercising device 1 illustrating that the motion unit 4 can perform rotation around yaw axis RY for adaptation to the individual.

[0040] Fig. 6 Side view of the exercising device 1 illustrating that the motion unit 4 can perform rotation around pitch axis PR for adaptation to the individual.

[0041] Fig. 7 Side view of the exercising device 1 illustrating that the telescopic arm 5 has a longitudinal extension LE for performing the strength exercises.

[0042] Detailed description

[0043] A preferred embodiment of the present disclosure relates to an exercising device 1 for an individual in a lying or sitting position, the exercising device comprising:

[0044] • a base frame 2 attachable to a structure 3 that allows the individual to remain in a lying or sitting position, for example in a bed,

[0045] • a motion unit 4 adjustably connected to the base frame 2, the motion unit 4 having a telescopic arm 5, and P7479PC00

[0046] 7

[0047] • a limb attachment component 6 for receiving a foot of a limb of the individual and connected to the telescopic arm 5, wherein the exercising device 1 is configured for translating the telescopic arm 5 according to a predefined input to perform a force-time profile with eccentric and / or concentric strength exercises of the limb of the individual, and wherein the limb attachment component 6 is configured for detecting plantar flexion in the foot.

[0048] The individual, who typically is exercising one limb at a time, can perform eccentric and concentric strength exercises using the presently disclosed exercising device. Using one limb at a time for the strength exercises has several advantages. Training one limb at a time helps identify and correct imbalances between the left and right limb. Many people have a dominant limb that naturally does more work during exercising, if both limbs are used at the same time, which can lead to asymmetries. Exercising one limb at a time forces each limb to bear the same workload, promoting balanced strength and muscle development. This additionally enhances overall core stability, which benefits many functional movements.

[0049] Unilateral leg training with a leg press minimizes or prevents the risk of lower back injuries associated with lumbar spine flexion. Additionally, it enables high-resistance strength training while reducing stress on the cardiovascular system, as the load per limb is halved compared to bilateral leg press exercises, resulting in a lower rise in blood pressure.

[0050] In the preferred embodiment, the exercising device 1 is configured for translating the telescopic arm 5 according to a predefined input, allowing it to perform a force-time profile tailored for eccentric and / or concentric strength exercises of the limb of the individual. The predefined input typically include parameters such as the range of motion, for example in the form of encoder positions, resistance levels, and duration of the exercise, enabling precise and customizable exercise protocols.

[0051] The exercising device 1 is designed to allow for dynamic adjustment of both eccentric and concentric loads, ensuring that each phase of the exercise movement is optimally controlled. Specifically, the load applied during the eccentric movement (muscle lengthening) and the load applied during the concentric movement (muscle shortening) can be independently set and dynamically adjusted. This independent load adjustment P7479PC00

[0052] 8 ensures that each repetition within a set can be optimized for the user’s strength capabilities, rehabilitation goals, or training requirements.

[0053] To achieve this dynamic resistance control, the device can include an encoder that detects the end of each movement phase - both eccentric and concentric. Upon detecting the completion of a phase, the encoder communicates with the control system 9 to automatically modify the resistance level for the subsequent phase of movement. This ensures that the load applied during the eccentric phase and the load applied during the concentric phase can be adjusted on a repetition-specific basis. This feature is particularly advantageous for rehabilitation, where eccentric movements are often performed with higher resistance compared to concentric movements to maximize muscle engagement and strength recovery. By allowing for real-time resistance adjustment, the exercising device ensures that the individual is consistently challenged throughout the exercise session, thereby optimizing muscle activation, improving training efficiency, and minimizing the risk of fatigue or injury.

[0054] In preferred embodiments, the dynamic adjustment of concentric and eccentric loads is further refined using real-time feedback from detected plantar flexion to prevent improper force distribution during exercise.

[0055] In one embodiment the concentric strength exercise is characterized by a first load and the eccentric exercise is characterized by a second load, and wherein the first load and the second load are individually adjustable. The individual adjustment of the first load and / or the second load may be provided based on feedback from the limb attachment component, preferably in real-time during the exercise.

[0056] Furthermore, the dynamic adjustment capability provides significant flexibility, as the exercising device can adapt to various users and training protocols. For instance, during the initial stages of rehabilitation, the system can start with lighter resistance settings and progressively increase the load as the individual regains strength. Similarly, in advanced training scenarios, the resistance can be finely tuned to achieve specific strength or endurance goals. P7479PC00

[0057] 9

[0058] The encoder positions at which the movement phases change I end are typically provided at the beginning of an exercise as part of a setup process, they are typically specific to the individual and can preferably be stored.

[0059] Figure 1 illustrates an exercising device 1 designed to allow an individual to perform eccentric and concentric strength exercises of the lower limbs while in a lying or sitting position. The exercising device 1 includes a base frame 2 that is attachable to a structure 3, such as a bed or bench, to ensure stability during use. The base frame 2 provides support for the various components of the exercising device, allowing for secure attachment and facilitating portability, when necessary, as indicated by the wheels on the bottom. A motion unit 4 is adjustably connected to the base frame 2, enabling various positional adjustments to accommodate the user’s height and limb orientation. The motion unit 4 houses a telescopic arm 5 that can extend or retract based on a predefined input to perform the necessary force-time profile for the eccentric and concentric exercises. A limb attachment component 6 is connected at the end of the telescopic arm 5. The limb attachment component 6 is designed to receive and carry the individual’s foot. The limb attachment component 6 allows for secure placement of the limb and includes features for detecting plantar flexion, as required for certain rehabilitation exercises.

[0060] Figure 2 presents a side view of the exercising device 1 which is designed to be attachable to a structure 3, such as a hospital bed or other stable support, allowing an individual to perform eccentric and concentric exercises while in a lying or seated position. The device includes a base frame 2 that provides foundational support for the entire system. The base frame 2 is equipped with wheels 11 , enabling easy transport and repositioning of the device within a clinical or rehabilitation setting. This portability feature enhances the device's usability in different rooms or areas of a hospital, as required for patient care. The wheels are centrally locked on touch for securing the exercising device in place. The structure attachment 10 supports secure fixation of the base frame 2 to the structure 3, such as the frame of a hospital bed, thereby providing a stable and safe exercise environment for the patient. This attachment mechanism is advantageous for preventing unwanted movement of the device during exercise, particularly when heavier resistance is applied by the force generator 7. The structure attachment 10 as shown in Figure 2 can be a metal structure that is fastened on the P7479PC00

[0061] 10 footboard of the structure 3. Alternatively, the structure attachment 10 can be a belt that can be attached on the footboard, sides or headboard of the structure 3.

[0062] Connected to the base frame 2 is the motion unit 4, which is adjustably mounted to allow positioning along both a longitudinal adjustment LOA and a lateral adjustment LAA to accommodate the individual’s specific anatomical requirements. This configuration allows the device to be adapted to the patient’s limb length and preferred exercise position. The motion unit 4 also provides flexibility through rotation around a yaw axis RY, enabling lateral alignment adjustments, and rotation around a pitch axis RP, allowing angular adjustments in the vertical plane. Once the individual’s foot is placed on the limb attachment component 6, as shown in the figure, the adjustment of the motion unit 4 can take place as described above.

[0063] The motion unit 4 comprises a telescopic arm 5 capable of extending in the longitudinal direction LOD to achieve the required range of motion which is optimized for the individual. This telescopic arm 5 is connected to a limb attachment component 6 at its end. The limb attachment component 6 is designed to securely receive the foot of the individual, enabling a stable connection for effective exercise execution. The part of the limb attachment component 601 ensures proper positioning during exercises. The component 6 can also pitch PLAC, meaning it can pivot to visually indicate plantar flexion in the foot, thereby providing feedback on the individual’s movement and engagement of lower limb muscles during exercises.

[0064] In one embodiment, the exercising device 1 comprises a force generator 7 for energizing the motion unit 4. As shown in Figure 1 , a force generator 7 may be included in the base frame 2 of the exercising device to provide the necessary force to energize the motion unit 4 during the exercise. The force generator 7 can be used to produce the desired resistance levels for both concentric and eccentric movements. The force generator 7 provides a force, which translates to a load. The load is used as resistance during the strength exercises. The individual pushes on the limb attachment component 6, causing retraction in the longitudinal extension LE of the telescopic arm. The force generator 7 can for example be based on a pneumatic pump, an electric motor, a hydraulic pump, a spring and / or a magnet. The type of the force generator 7 used can depend on the amount of force that needs to be generated. P7479PC00

[0065] 11

[0066] In preferred embodiments, the force generator is configured to provide actively controlled resistance in both extension and retraction directions synchronized with movement phase transitions. Alternative or additionally the force generator may provide actively controlled, bidirectional resistance synchronized with movement phase transitions and plantar-flexion-based feedback.

[0067] In one embodiment, the exercising device 1 is configured to measure and / or indicate a spatial distribution of pressure and / or force on the limb attachment component 6 exerted by the foot of the individual. The spatial distribution of pressure on the limb attachment component 6, indicating the spatial distribution of force applied by the individual can provide information on whether the individual is using the heel or the forefoot during concentric exercises, when the individual is pressing on the limb attachment component. To ensure preferred execution of the exercise, the individual should apply pressure on the heel and not on the forefoot. This will enable activation of the gluteal and hamstring muscles during the movement. Pressing with the heel allows reducing the risk of excessive shear forces that can strain the knee joint. Moreover, keeping the heel grounded helps recruiting posterior muscles above anterior muscles of the lower body distributing the force evenly and minimizing stress on any single joint.

[0068] In one embodiment, the limb attachment component 6 can be pitchable, such as 5° to 20° relative to the telescopic arm, to visually indicate plantar flexion in the foot of the individual during concentric strength exercise. This can be used as a direct indication of improper execution of the exercises, and is another example of how to indicate a spatial distribution of pressure and / or force on the limb attachment component 6 exerted by the foot of the individual. In such case, the individual performing the exercises can ensure that the exercise is performed properly, based on a visual indication of the spatial distribution of pressure. In the case that the individual is performing the exercises in the presence of a trainer or a patient is performing the exercises in the presence of medical personnel, that person can easily verify if the exercise is performed properly.

[0069] As shown in Figure 1, the limb attachment component 6 may be designed to securely receive the foot of the individual, enabling a stable connection for effective exercise execution. The limb attachment component 6 includes a part 601 , which ensures proper positioning during exercises. The limb attachment component 6 can also be P7479PC00

[0070] 12 pitchable, meaning it can pivot to visually indicate plantar flexion in the foot, thereby providing feedback on the individual’s engagement of lower limb muscles during exercises. The pitch of the limb attachment component PLAC is a visual indication of plantar flexion in the foot, and therefore of improper execution of the exercises.

[0071] In one embodiment the presently disclosed device is configured to measure a pressure difference between a heel and a forefoot of the foot of the individual during exercise, preferably concentric strength exercise, preferably in real-time. For example, the limb attachment component 6 can comprise at least one pressure sensor 12, such as a load cell, to measure pressure difference in the foot of the individual during concentric strength exercise. The use of a pressure sensor 12 can be used as another approach to ensure the correct execution of the exercises. The limb attachment component 6 can comprise at least two pressure sensors 12, such as load cells, longitudinally separated in the limb attachment component 6, to measure a pressure difference between a heel and a forefoot of the foot of the individual during concentric strength exercise. The measurement of the pressure difference can directly provide quantitative information on the correct execution of the exercise. This can be used as an alternative or as an add on to the visual indication provided by a pitchable limb attachment component 6. Knowing the pressure difference between a heel and a forefoot of the foot of the individual during exercise may advantageously be used for adapting and / or controlling the force-time profile, preferably in real-time during the exercise.

[0072] Figure 1 shows the limb attachment component 6 can be equipped with one or more pressure sensors 12 to measure force exerted by the foot, to detect variations in force distribution between the heel and forefoot. The at least one pressure sensors 12 can be located on the part 601 of the limb attachment component 6 and measure the pressure difference at different parts of the sole of the foot.

[0073] The exercising device 1 , through the adjustable motion unit 4, may advantageously allow for adjustment to the individual’s position.

[0074] In one embodiment, the motion unit 4 is longitudinally adjustable relative to the base frame 2, for adjustment to a height of the individual. The longitudinal adjustment LOA ensures that the exercising device 1 can be used regardless of the height of the individual. The motion unit 4 is longitudinally adjustable relative to the base frame 2 by P7479PC00

[0075] 13 at least by 10 cm, preferably at least by 25 cm, more preferably at least by 37 cm or even by 40 cm. This additionally provides some flexibility on how far from the individual the exercising device 1 needs to be placed. Figure 3 illustrates the longitudinal adjustment LOA of exercising device 1. The motion unit 4 can be moved along the longitudinal direction LOD. Figure 3 shows two extreme positions of the motion unit 4, where the first position corresponds to the motion unit 4 being retracted and the second position shows the motion unit 4 being extended. The longitudinal adjustment LOA brings the exercising device 1 closer or further from the individual performing the exercises and can be used for adjustment based on the longitudinal position of the individual on the structure 3 and the individual’s height.

[0076] In one embodiment, the motion unit 4 is laterally adjustable relative to the base frame 2 for adjustment to a right limb or a left limb of the individual. The exercising device 1 is used for exercising one limb at a time, therefore the lateral adjustment LAA is used to adjust to the right or left limb of the individual and overall the lateral position of the individual relative to the frame 2 of the exercising device 1. The motion unit 4 may be laterally adjustable relative to the base frame 2 by at least 40 cm, preferably at least by 60 cm, more preferably at least by 80 cm, or even by at least 120 cm. Figure 4 shows the lateral adjustment LAA of the exercising device 1, where the device is seen from the top. The motion unit 4 can be adjusted along the lateral direction LAD for adjustment to a right limb or a left limb of the individual. Figure 4 shows the two extreme positions of the motion unit 4, where as an example one position can be used for exercising the left limb and the other position for exercising the right limb.

[0077] In one embodiment, the motion unit 4 is rotationally adjustable around a yaw axis relative to the base frame 2, the rotation being at least 60°, preferably at least 120°, more preferably at least 170°, for example 180°. The rotation around the yaw axis RY refers to the rotation that changes the direction to which the motion unit 4 is pointing, moving the motion unit 4 to the left or right of the direction of motion of the telescopic arm 5. The rotation around the yaw axis RY is used to account for the orientation of the individual relative to the base frame 2. For example, if an individual is laying on a structure 3 such, as a bed, in such a way that their head will be closer to one side of the bed compared to their legs, with the exercising device 1 being attached to the footboard of the bed, adjustment of the exercising device 1 by rotation around the yaw axis RY would be needed. The rotation around the yaw axis RY is illustrated in Figure P7479PC00

[0078] 14

[0079] 5, showing a top view of the exercising device 1. The motion unit 4, with guidance from the alignment unit 8 can perform rotation around the yaw axis RY.

[0080] In one embodiment, the motion unit 4 is rotationally adjustable around a pitch axis relative to the base frame 2, the rotation being at least 10°, preferably at least 15°, more preferably at least 18°, for example 20°. The rotation around the pitch axis RP refers to the rotation where the motion unit 4, and subsequently the telescopic arm 5 and the limb attachment component 6 are tilted up and down. The rotation around the pitch axis RP can be important for ensuring activation of different muscles during exercising. For example, positioning the limb high will lead to activation of the gluteal and hamstring muscles while positioning the limb low will lead to activation of the quadriceps muscles. The adjustment of the exercising device 1 by rotation around the pitch axis RP is shown in Figure 6.

[0081] In one embodiment, the maximum longitudinal extension of the telescopic arm 5 is at least 20 cm, preferably at least 30 cm, more preferably at least 40 cm. This defines the range of the longitudinal extension LE during the exercises. The longitudinal extension LE can be selected based on the height and the exercising plan for the individual. Figure 7 shows the exercising device 1 , where the telescopic arm 5 extends along the longitudinal direction LOD. The longitudinal extension LE is measured as the extension of the telescopic arm 5, from the end of the motion unit 4 to the part of the limb attachment component 601.

[0082] In one embodiment, the motion unit 4 is configured to longitudinally translate the telescopic arm 5 with a force corresponding to a load in a range between 0.5 kg and 200 kg, preferably between 1 kg and 150 kg, preferably between 2 kg and 90 kg. The force, provided by the force generator 7, and the corresponding load, are selected based on the exercising plan for the individual. The load is here expressed in kilograms (kg) but could also be expressed in Newton (N). For example, a high load can be used for a single repetition while a lower load can be used for a larger number of repetitions. A precise load adjustment may be required for resistance progression during training especially if the exercising device 1 is used for training of a frail individual, where the adjustment of load may require adjustments as low as 100 g between training sessions. P7479PC00

[0083] 15

[0084] In one embodiment, the exercising device 1 can comprise an alignment unit 8 for aligning the motion unit 4 with an anatomical part of the individual, such as a hip, a knee and / or a shoulder of the individual. The alignment unit 8 allows for ensuring that the motion unit 4 is every time adjusted relative to the individual’s position. The alignment can take place using anatomical parts of the individual such as the as a hip, a knee and / or a shoulder of the individual, which are indicative of the limb positioning.

[0085] The alignment unit 8 can be used for example when the adjustment of the motion unit 4 takes place for the first time in a training session and every time a change from one to the other limb takes place. This step is important for achieving the optimal position in each set, given that the individual might have moved or adjusted seating I position between sets. The alignment unit 8 can be positioned on the motion unit 4 and can be moved and / or rotated together with the motion unit 4. Moreover, the alignment unit 8 can be individually adjustable, such as tiltable and / or height adjustable relative to the motion unit 4. This adjustment in height might be used in case the alignment unit is obstructed by the limb attachment component 6 or the limb of the individual. The adjustment in angle, such as tilt, might be useful in case of large rotation of the motion unit 4 around the pitch axis RP. Overall, the adjustment of the alignment unit 8 can be performed if necessary for making sure the alignment unit 8 is pointing to the selected anatomical part or parts of the individual. Figure 1 shows an example of the placement of the alignment unit 8 on the motion unit 4.

[0086] In one embodiment, the alignment unit 8 can comprise a light source, such as an LED or a laser. The use of optical alignment methods provides an easy and intuitive method for ensuring correct alignment of the individual with the exercising device. For example, an LED light source or a point laser can be used for shining light on the shoulder of the individual or another specified anatomical part of the individual. Even more accurate and reproducible alignment between sets can be achieved if a specific marking is used on the specified anatomical part of the individual. Another option would be to use a line laser, which are typically used for alignment purposes. In that case, the line created by the laser along the knee, hip and shoulder can be used. For a line laser light, a constant brightness distribution along the line is desirable and a high laser line straightness. For safety reasons, if a laser light were to be used, its power should not exceed the power of a class 1 laser. P7479PC00

[0087] 16

[0088] In one embodiment, the exercising device 1 is configured for guided, semi-automatic adjustment, or automatically adjustment of the position of the motion unit 4 relative to the base frame 2 for adaptation to the individual, for example based on the alignment unit 8. This adjustment feature enhances the usability and efficiency of the device, particularly in clinical settings where precise customization is essential for effective rehabilitation and strength training. For example, the system can determine the appropriate distance between the limb attachment component 6 and the individual’s hip, knee, or ankle to ensure the correct range of motion for the eccentric and concentric exercises. Similarly, the system can adjust laterally LAA to position the motion unit 4 to the right or left, depending on whether the individual is exercising their right or left limb. The adjustment process can be guided by input from the alignment unit 8, which may include sensors or a light projection system, such as an LED or laser, for detecting and marking specific anatomical landmarks. The alignment unit 8 can communicate with the control system 9 to provide feedback on the current position of the motion unit 4 relative to the individual’s body. Based on this feedback, the control system 9 can calculate and execute precise adjustments to align the limb attachment component 6 with the individual’s anatomical structure. In another example, the alignment unit 8 might project a light beam onto the individual’s knee or hip as a reference point. If the projected beam indicates a misalignment, the control system 9 can command the motion unit 4 to adjust its position until the alignment is corrected. This process ensures that the exercising device 1 is correctly positioned for the specific exercise protocol, eliminating the need for manual adjustment by healthcare professionals or the user.

[0089] The automatic adjustment system may also incorporate pre-programmed settings tailored to different individuals. For instance, the device can store specific configurations based on a patient’s prior exercise sessions, allowing it to recall and reapply those settings automatically during subsequent uses. This feature not only saves time but also ensures consistent and precise positioning, which is critical for rehabilitation and monitoring progress over time. By integrating automatic adjustment capabilities, the exercising device 1 significantly reduces setup complexity and enhances accessibility for individuals with limited mobility or physical limitations. This feature ensures that the device can be quickly and accurately customized for various users, improving the overall efficiency and safety of the eccentric and concentric strength exercises it facilitates. P7479PC00

[0090] 17

[0091] The exercising device 1 is configured for translating the telescopic arm 5 according to a predefined input to perform a force-time profile with eccentric and / or concentric strength exercises of the limb of the individual.

[0092] In one embodiment, the predefined input comprises parameters selected from the group of: range of eccentric strength exercise, load of the eccentric strength exercises, range concentric strength exercise, load of the concentric strength exercise, duration of the exercise. The predefined input consists of a set of parameters that define the specific characteristics of the exercise program. These parameters can include, but are not limited to, the parameters mentioned here.

[0093] The range of eccentric strength exercise defines the extent to which the telescopic arm 5 will extend during the eccentric phase of the exercise, where the limb muscles are lengthened under tension. By setting this range, the device ensures that the eccentric motion occurs within safe and optimal limits for the user, helping to strengthen muscles without overexertion or strain. The range can be converted to encoder positions of the telescopic arms.

[0094] The load of the eccentric strength exercise specifies the resistance level applied by the exercising device 1 during the eccentric phase. The resistance can be calibrated to match the user’s strength or rehabilitation needs, with the force generator 7 providing the necessary resistance. Adjusting this load ensures gradual progression, reducing the risk of injury while maximizing muscle development.

[0095] The range of concentric strength exercise defines the range of motion for the concentric phase, where the limb muscles contract and shorten to move the telescopic arm 5 back to its starting position. Setting the range of concentric motion allows the exercise to target specific muscle groups effectively, ensuring a balanced workout. The load of the concentric strength exercise specifies the resistance level during the concentric phase. Resistance can differ between the concentric and eccentric phases to accommodate the natural variance in muscle strength and to optimize the exercise for specific training or rehabilitation goals. For example, concentric movements may involve less resistance than eccentric ones to align with physiological capabilities. P7479PC00

[0096] 18

[0097] The duration of the exercise determines the total time for which the exercise will be performed. A control system 9 may use this parameter to regulate the duration of repetitions or set cycles, ensuring that the exercise is completed as planned. This is particularly useful in rehabilitation settings, where the duration needs to be carefully monitored to avoid fatigue or overuse.

[0098] In one embodiment, the exercising device 1 can comprise a control system 9 for receiving the predefined input and controlling the motion unit 4 based on the predefined input. The control system 9 can be configured to collect data about exercising activity of the individual, such as for regulating the force, storing data and / or memorize data from the individual. This feature can be useful when creating an exercise plan for an individual, where tracking of the progress and / or adjusting the plan based on the current progress. For example, tracking the maximum load that can be used for a single repetition can help adjust the percentage of the maximum load that will progressively be used during the training period. The control system 9 can be configured to receive information about the distribution of force on the limb attachment component 6. This information can be used for determining if the exercise is performed properly for example by displaying a warning message. Moreover, the control system 9 could further be used for tilting the limb attachment component accordingly, to compensate for plantar flexion in the foot of the individual during concentric strength exercise.

[0099] The exercising device 1 is preferably configured to be used by an individual in a lying or sitting position. The base frame 2 is attachable to a structure 3 that allows the individual to remain in a lying or sitting position. In one embodiment, the structure 3 can be a bed, like a headboard or footboard of the bed, or a bench. In one embodiment, the exercising device 1 is portable, for example wherein the base frame 5 is supported on wheels 11. The exercising device 1 being portable is particularly useful for moving the device from one location to another for use from different individuals. Attachment of the exercising device 1 to a structure 3, using the structure attachment 10, allows the individual to remain in a lying or sitting position is another practical feature. The exercising device 1 being portable and easily attached for example to a bed makes it particularly advantageous for use in a hospital environment. If the individual is laying on a hospital bed, the exercising device 1 is brought to them and attached to the hospital P7479PC00

[0100] 19 bed. In the case that the individual is a bedridden patient, the exercising device 1 and be used for prevention of muscle loss.

[0101] In preferred embodiments, the exercising device is positioned at a foot end of a bed, preferably attached to the bed, with the longitudinal axis of the telescopic arm substantially aligned with a longitudinal axis of the bed.

[0102] The disclosure further relates to a method for prevention of muscle loss in an individual by performing at least one eccentric and / or concentric strength exercise of a limb of the individual, the method comprising the steps of:

[0103] • providing an exercising device, preferably the presently disclosed exercising device,

[0104] • laterally, longitudinally and / or rotationally adjusting the motion unit 4 relative to the base frame 2 to adapt to the limb,

[0105] • attaching a foot of the limb of the individual to the limb attachment component 6,

[0106] • defining at least one eccentric and / or concentric strength exercise of the individual in the form of a predefined input,

[0107] • activating the exercising device 1 based on the predefined input.

[0108] In one embodiment, the method comprises the step of the lateral adjustment LAA and longitudinal adjustment LOA of the motion unit 4 is provided with feedback and / or guidance, such as optical feedback and / or guidance, from an alignment unit 8. The alignment unit 8 may provide optical feedback and / or guidance, using visual cues such as projected light, from a laser or an LED. For example, the alignment unit 8 could project a laser dot or line onto the individual’s limb to indicate the correct positioning of the motion unit 4. This visual feedback allows the user, a therapist, or a medical professional to make precise lateral adjustment LAA and longitudinal adjustment LOA to ensure that the telescopic arm 5 and limb attachment component 6 are properly aligned with the user’s limb. Proper alignment is critical for achieving the correct range of motion and resistance profile during eccentric and concentric strength exercises. The alignment unit 8 may work dynamically, providing real-time feedback during the adjustment process. For instance, as the motion unit 4 is moved laterally or longitudinally, the alignment unit 8 can continuously adjust its projected light or P7479PC00

[0109] 20 indicator to show whether the device is approaching the optimal position. Once alignment is achieved, the alignment unit 8 may provide a confirmation signal, such as a change in the colour or intensity of the light, ensuring that the motion unit 4 is correctly aligned.

[0110] In some embodiments, the alignment unit 8 may also include sensors or cameras capable of detecting the position of the individual’s limb relative to the device. These sensors could communicate with the control system 9 to provide automated or semiautomated adjustments. For example, the system could measure the distance between the limb and the motion unit 4 and automatically fine-tune the device’s position until alignment is achieved, significantly reducing the need for manual adjustments.

[0111] This feedback and guidance from the alignment unit 8 not only simplifies the setup process but also ensures that the device is positioned accurately for safe and effective use. Misalignment could lead to suboptimal exercise performance, increased strain on joints, or even injury, particularly in rehabilitation settings where precision is paramount. The alignment unit 8 mitigates these risks by ensuring that the lateral adjustment LAA and longitudinal adjustment LOA are both accurate and intuitive.

[0112] The integration of feedback mechanisms also enhances the usability of the exercising device 1 in environments where rapid and repeated adjustments are necessary, such as in a hospital or rehabilitation centre with multiple patients. By providing visual or sensor-based guidance, the device enables therapists or caregivers to quickly and efficiently adjust the motion unit 4 for different individuals, streamlining the process and improving overall efficiency.

[0113] In one embodiment, the method comprises the steps of receiving indications and / or feedback from the limb attachment component 6 regarding unwanted flexion and / or pressure difference of the foot of the individual during concentric exercises. This feedback is crucial for monitoring the individual's movement patterns and ensuring the correct execution of the exercise. Proper movement reduces the risk of injury and maximizes the effectiveness of the rehabilitation or strength training program. The limb attachment component 6 may be configured with pressure sensors 12, that detect forces exerted by different parts of the foot, including the heel and forefoot. These sensors can measure and analyse the distribution of pressure during the concentric phase of the exercise, when the individual is shortening the muscles to move the P7479PC00

[0114] 21 telescopic arm 5 back to its starting position. If the sensors detect an imbalance in pressure — such as excessive force on the forefoot or insufficient force on the heel — this may indicate unwanted plantar flexion or improper alignment of the foot during the exercise. The feedback system in the limb attachment component 6 communicates this data to the control system 9, which processes the information in real time. The control system 9 can use this feedback to provide immediate alerts or adjustments. For example, if unwanted plantar flexion is detected, the system could alert the individual or therapist through an audible, visual, or tactile signal, indicating that the exercise technique needs to be corrected. Moreover, the system could adjust the resistance or motion of the telescopic arm 5 to accommodate the individual’s movement patterns and minimize the risk of strain on the foot or ankle.

[0115] The system could additionally record the feedback for later analysis, allowing medical professionals to assess the individual's performance and progress over time.

[0116] In one embodiment of the method, the limb attachment component 6 can pitch in case of unwanted plantar flexion and / or pressure difference of the foot of the individual during concentric exercises. The limb attachment component 6 may include a part of the limb attachment component 601 that allows pitch of the limb attachment component PLAC that visually indicates plantar flexion in real time. If the foot moves beyond the desired range, the limb attachment component 6 may tilt to provide an immediate, intuitive visual cue to the individual, trainer or medical personnel. This physical indication of improper foot positioning serves as an additional layer of feedback to help the individual maintain proper form during the exercise.

[0117] In one embodiment, the method can be used for prevention of sarcopenia. Sarcopenia is the gradual loss of muscle mass, strength, and function that occurs with aging. It impacts mobility, stability, and overall quality of life. Sarcopenia can significantly increase the risk of disability, falls, fractures, and a decrease in the quality of life in older adults. Addressing it early on can greatly enhance physical independence and overall health as one ages. Strength training exercises stimulate muscle growth and counteract age-related muscle loss.

[0118] In one embodiment, the method comprises use of an exercising device 1. The method can be performed by using the exercising device 1 according to the current disclosure. P7479PC00

[0119] 22

[0120] The method is performed using the exercising device 1 as described in the current disclosure, incorporating its advanced features for adaptability, monitoring, and safety. The exercising device 1 can be portable and attached to a bed such as a hospital bed, therefore can be used for exercising of a lower limb of a bedridden patient. The device is configured to be securely attached to a structure, such as a hospital bed, using a structure attachment 10. The structure attachment 10 ensures that the device remains stable and stationary during use, even when performing exercises with significant resistance. This stability is crucial for bedridden patients, who often require robust and secure support systems to safely perform physical activities. The exercising device 1 is designed to enable lower limb exercises for bedridden patients who cannot bear weight or perform traditional upright exercises. In this scenario, the device is attached to the bed — such as the footboard, headboard, or sides — depending on the patient's position and the setup requirements. The adjustable motion unit 4, which includes longitudinal adjustment LOA and lateral adjustment LAA, ensures that the device can be precisely positioned to align with the patient’s anatomy, such as their hip, knee, or ankle. This method is particularly effective for preventing muscle loss or sarcopenia in bedridden patients, as it provides a safe and controlled way to stimulate muscle activity without requiring the patient to bear weight or move out of bed. By focusing on isolated limb exercises, the device helps maintain muscle mass, improve circulation, and promote recovery in a low-risk environment.

[0121] Examples

[0122] Operation of the exercising device

[0123] This example illustrates the steps of setup and operation of the exercising device, for use in a hospital environment by a bedridden patient.

[0124] In a hospital setting, the exercising device 1 can be used to provide rehabilitative strength exercises for patients who are bedridden or have limited mobility. The device is designed to assist patients in performing controlled eccentric and concentric exercises of the lower limbs while remaining in a lying or sitting position, making it especially suitable for use with patients recovering from surgeries, injuries, or conditions that restrict mobility.

[0125] The exercising device 1 can be attached securely to the patient’s bed or another stable structure 3 in the hospital room, connecting the structure attachment 10 of the base P7479PC00

[0126] 23 frame 2 to the structure 3. This ensures that the device remains stationary during use, even when performing exercises that require significant resistance. Once attached, the motion unit 4 can be adjusted to align with the patient’s anatomy, for example by performing a lateral adjustment LAA, longitudinal adjustment LOA, rotation around yaw axis RY and / or rotation around pitch axis RP. The motion unit 4 is aligned with the patient’s anatomy, such as the hip or knee, for optimal positioning and comfort. The alignment unit 8 can assist hospital staff in properly positioning the motion unit 4 relative to the patient’s lower limbs by providing visual feedback, such as by using a light source or a laser, to ensure accurate alignment with anatomical landmarks.

[0127] To initiate the exercise, hospital staff can place the patient’s foot in the limb attachment component 6 at the end of the telescopic arm 5. The limb attachment component 6 secures the foot and is equipped with sensors to detect specific movements, such as plantar flexion and / or pressure difference in the foot of the patient, which can be valuable for monitoring the patient’s muscle control and progression. Once the patient is secured, the control system 9 allows for the input of predefined exercise parameters, such as the range of motion, resistance levels defined by load selection, and possibly duration of the exercise. These parameters can be customized based on the patient's strength and rehabilitation needs, ensuring that the exercise intensity is appropriate for their condition.

[0128] During the exercise, the force generator 7 provides the necessary power to move the telescopic arm 5 according to the selected resistance profile, facilitating eccentric and concentric movements that strengthen the patient’s lower limb muscles without requiring them to bear their body weight. The device can automatically adjust the resistance and motion profile to simulate the required force-time dynamics for each exercise, allowing for a progressive and controlled rehabilitation process. This is particularly beneficial in a hospital environment where staff may need to ensure that patients are performing exercises safely and with minimal risk of injury.

[0129] Additionally, the control system 9 can collect data about the patient's exercise activity, such as force distribution on the limb attachment component 6 or any occurrence of plantar flexion during the exercise. This data can be stored or transmitted for review by medical professionals, allowing them to monitor the patient’s progress over time and make adjustments to the rehabilitation program as needed. For instance, if the system P7479PC00

[0130] 24 detects unwanted plantar flexion, it may alert hospital staff to adjust the exercise settings or provide additional support for the patient.

[0131] In-bed resistance training for geriatric patients

[0132] In this example, the use of the exercising device is discussed in the context of in-bed training for geriatric patients. The device can be used for leg muscle strength and physical functioning in elderly patients, with the potential to reduce hospital stays. An 8 week period is used as an example for progressive resistance training, where 2 to 3 sessions take place each week.

[0133] Each session may begin with simple in-bed movements, such as sliding legs back and forth across the bedsheet and performing few repetitions with light resistance on the exercising device to activate the muscles gently.

[0134] A direct assessment of the maximum load that can be used for a single repetition, for each leg. This is used to establish a baseline for maximal strength. An increase of 1.5% maximum load that can be used for a single repetition may be established per session. The exercise loads may be designed to progress linearly, from 68% to 83% of the patient’s maximum load for single repetition.

[0135] In the first session, the patient will familiarize themselves with the exercising equipment and the maximum load for single repetition will be progressively established. In the second session, the patient will use 68% of their maximum load for single repetition, and execute 14 repetitions. The exercise volume, defined by the number of sets, may vary between two and four per leg, allowing for adaptability based on individual tolerance and response.

[0136] In each session, a higher percentage of their maximum load for single repetition will be used, adjusting the number of repetitions accordingly. For example, after 1 to 1.5 weeks, the patient will be using 83% of their maximum load for single repetition, performing 6 repetitions. In the next session, the maximum load for single repetition will be re-established and the cycle of training will start over. P7479PC00

[0137] 25

[0138] Following a training plan like the one presented could result in a cumulative weekly increase of the maximum load for single repetition of approximately 3.8%, which offers a balance between safety and effectiveness of the training plan.

[0139] References

[0140] 1 exercising device

[0141] 2 base frame

[0142] 3 structure

[0143] 4 motion unit

[0144] 5 telescopic arm

[0145] 6 limb attachment component

[0146] 601 part of limb attachment component

[0147] 7 force generator

[0148] 8 alignment unit

[0149] 9 control system

[0150] 10 structure attachment

[0151] 11 wheel

[0152] 12 pressure sensor

[0153] LOD longitudinal direction

[0154] LOA longitudinal adjustment

[0155] LAD lateral direction

[0156] LAA lateral adjustment

[0157] RY rotation around yaw axis

[0158] RP rotation around pitch axis

[0159] LE longitudinal extension

[0160] PLAC pitch of limb attachment component

[0161] Items

[0162] 1. An exercising device for an individual in a lying or sitting position, the exercising device comprising:

[0163] • a base frame attachable to a structure that allows the individual to remain in a lying or sitting position, for example in a bed,

[0164] • a motion unit adjustably connected to the base frame, the motion unit having a telescopic arm, and P7479PC00

[0165] 26

[0166] • a limb attachment component for receiving a foot of a limb of the individual and connected to the telescopic arm, wherein the exercising device is configured for translating the telescopic arm according to a predefined input to perform a force-time profile with eccentric and / or concentric strength exercises of the limb of the individual, and wherein the limb attachment component is configured for detecting plantar flexion in the foot.

[0167] 2. The exercising device according to item 1 , comprising a force generator for energizing the motion unit.

[0168] 3. The exercising device according to item 2, wherein the force generator is based on a pneumatic pump, an electric motor, a hydraulic pump, a spring and / or a magnet, preferably wherein the force generator is configured to provide actively controlled resistance in both extension and retraction directions synchronized with movement phase transitions.

[0169] 4. The exercising device according to any of the preceding items, configured to measure and / or indicate a spatial distribution of pressure and / or force on the limb attachment component exerted by the foot of the individual.

[0170] 5. The exercising device according to any of the preceding items, wherein the limb attachment component is pitchable, such as 5° to 20°, for example relative to the telescopic arm to visually indicate plantar flexion in the foot of the individual during concentric strength exercise.

[0171] 6. The exercising device according to any of the preceding items, wherein the limb attachment component comprises at least one pressure sensor, such as a load cell, to measure pressure difference in the foot of the individual during concentric strength exercise.

[0172] 7. The exercising device according to any of the preceding items, wherein the limb attachment component comprises at least two pressure sensors, such as load cells, longitudinally separated in the limb attachment component, to measure a P7479PC00

[0173] 27 pressure difference between a heel and a forefoot of the foot of the individual during concentric strength exercise.

[0174] 8. The exercising device according to any of the preceding items, wherein the motion unit is longitudinally adjustable relative to the base frame, for adjustment to a height of the individual.

[0175] 9. The exercising device according to any of the preceding items, wherein the motion unit is longitudinally adjustable relative to the base frame by at least by 10 cm, preferably at least by 25 cm, more preferably at least by 37 or even by 40 cm.

[0176] 10. The exercising device according to any of the preceding items, wherein the motion unit is laterally adjustable relative to the base frame for adjustment to a right limb or a left limb of the individual.

[0177] 11. The exercising device according to any of the preceding items, wherein the motion unit is laterally adjustable relative to the base frame by at least 40 cm, preferably at least by 60 cm, more preferably at least by 80, or even by at least 120 cm.

[0178] 12. The exercising device according any of the preceding items, wherein the motion unit is rotationally adjustable around a yaw axis relative to the base frame, the rotation being at least 60°, preferably at least 120°, more preferably at least 170°, for example 180°.

[0179] 13. The exercising device according any of the preceding items, wherein the motion unit is rotationally adjustable around a pitch axis relative to the base frame, the rotation being at least 10°, preferably at least 15°, more preferably at least 18°, for example 20°.

[0180] 14. The exercising device according to any of the preceding items, wherein the maximum longitudinal extension of the telescopic arm is at least 20 cm, preferably at least 30 cm, more preferably least 40 cm. P7479PC00

[0181] 28

[0182] 15. The exercising device according any of the preceding items, wherein the motion unit is configured to longitudinally translate the telescopic arm with a force corresponding to a load in a range between 0.5 kg and 200 kg, preferably between 1 kg and 150 kg, preferably between 2 kg and 90 kg.

[0183] 16. The exercising device according any of the preceding items, comprising an alignment unit for aligning the motion unit with an anatomical part of the individual, such as a hip, a knee and / or a shoulder of the individual.

[0184] 17. The exercising device according to item 16, wherein the alignment unit is positioned on the motion unit and is moved and / or rotated together with the motion unit.

[0185] 18. The exercising device according to any one of items 16-17, wherein the alignment unit comprises a light source, such as an LED or a laser.

[0186] 19. The exercising device according to any one of items 16-18, wherein the alignment unit is individually adjustable, such as tiltable and / or height adjustable relative to the motion unit.

[0187] 20. The exercising device according to any of the preceding items, configured for automatically adjusting the position of the motion unit relative to the base frame for adaptation to the individual, for example based on the alignment unit.

[0188] 21. The exercising device according any of the preceding items, wherein the predefined input comprises parameters selected from the group of: range of eccentric strength exercise, load of the eccentric strength exercises, range concentric strength exercise, load of the concentric strength exercise, duration of the exercise.

[0189] 22. The exercising device according to any of the preceding items, comprising a control system for receiving the predefined input and controlling the motion unit based on the predefined input. P7479PC00

[0190] 29

[0191] 23. The exercising device according to item 22, wherein the control system is configured to collect data about exercising activity of the individual, such as for regulating the force, storing data and / or memorize data from the individual.

[0192] 24. The exercising device according to any one of items 22-23, wherein the control system is configured to receive information about the distribution of force on the limb attachment component.

[0193] 25. The exercising device according to any of the preceding items, wherein the concentric strength exercise is characterized by a first load and the eccentric exercise is characterized by a second load, and wherein the first load and the second load are individually adjustable, preferably wherein the individual adjustment of the first load and / or the second load is provided based on feedback from the limb attachment component..

[0194] 26. The exercising device according to any of the preceding items, wherein the structure is a bed, like a headboard of the bed, or a bench.

[0195] 27. The exercising device according to any of the preceding items, configured to adapt or control the force-time profile based on the detected plantar flexion in the foot.

[0196] 28. The exercising device according to any of the preceding items, wherein the exercising device is portable, for example wherein the base frame is supported on wheels.

[0197] 29. A method for prevention of muscle loss in an individual by performing at least one eccentric and / or concentric strength exercise of a limb of the individual, the method comprising the steps of:

[0198] • providing an exercising device according to any of the preceding items,

[0199] • laterally, longitudinally and / or rotationally adjusting the motion unit relative to the base frame to adapt to the limb,

[0200] • attaching a foot of the limb of the individual to the limb attachment component,

[0201] • defining at least one eccentric and / or concentric strength exercise of the individual in the form of a predefined input, P7479PC00

[0202] 30

[0203] • activating the exercising device based on the predefined input.

[0204] 30. The method according to item 29, wherein the lateral and longitudinal adjustment of the motion unit is provided with feedback and / or guidance, such as optical feedback and / or guidance, from an alignment unit.

[0205] 31. The method according to any one of items 29-30, comprising receiving indications and / or feedback from the limb attachment component regarding unwanted flexion and / or pressure difference of the foot of the individual during concentric exercises.

[0206] 32. The method according to any one of items 29-31 , wherein the limb attachment component pitches in case of unwanted plantar flexion and / or pressure difference of the foot of the individual during concentric exercises.

[0207] 33. The method according to any one of items 29-32, wherein the method is used for prevention of sarcopenia.

[0208] 34. The method according to any one of items 29-33, wherein the exercising device is used for exercising of a lower limb of a bedridden patient.

[0209] 35. The method according to any one of items 29-34, comprising monitoring plantar flexion via the limb attachment component and adapting the force-time profile based on the detected plantar flexion, preferably adapting the force-time profile in real-time during the exercise.

[0210] 36. The method according to any one of items 29-35, wherein the individual is located in a bed, wherein the exercise device is separate from the bed and wherein the base frame of the exercise device initially is attached to the bed.

[0211] 37. The method according to any one of items 29-35, wherein the method is performed by using the exercising device according to any one of items 1 to 28.

Claims

1. P7479PC0031Claims1 . An exercising device for an individual in a lying or sitting position, the exercising device comprising:• a base frame attachable to a structure that allows the individual to remain in a lying or sitting position, for example in a bed,• a motion unit adjustably connected to the base frame, the motion unit having a telescopic arm, and• a limb attachment component for receiving a foot of a limb of the individual and connected to the telescopic arm, wherein the exercising device is configured for translating the telescopic arm according to a predefined input to perform a force-time profile with eccentric and / or concentric strength exercises of the limb of the individual, and wherein the limb attachment component is configured for detecting plantar flexion in the foot.

2. The exercising device according to claim 1 , configured to measure and / or indicate a spatial distribution of pressure and / or force on the limb attachment component exerted by the foot of the individual.

3. The exercising device according to any of the preceding claims, wherein the exercising device is configured to adapt and / or control the force-time profile based on the detected plantar flexion in the foot, preferably adapted and / or controlled in real-time during the exercise.

4. The exercising device according to any of the preceding claims, wherein the limb attachment component is pitchable relative to the telescopic arm to visually indicate plantar flexion in the foot of the individual during concentric strength exercise.

5. The exercising device according to any of the preceding claims, wherein the limb attachment component comprises at least two pressure sensors, such as load cells, longitudinally separated in the limb attachment component, to measure a pressure difference between a heel and a forefoot of the foot of theP7479PC0032 individual during concentric strength exercise.

6. The exercising device according to any of the preceding claims, wherein the concentric strength exercise is characterized by a first load and the eccentric exercise is characterized by a second load, and wherein the first load and the second load are individually adjustable.

7. The exercising device according to claim 6, wherein the individual adjustment of the first load and / or the second load is provided based on feedback from the limb attachment component.

8. The exercising device according to any of the preceding claims, wherein the motion unit is longitudinally adjustable relative to the base frame, for adjustment to a height of the individual, and wherein the motion unit is laterally adjustable relative to the base frame for adjustment to a right limb or a left limb of the individual.

9. The exercising device according any of the preceding claims, wherein the motion unit is rotationally adjustable around a yaw axis relative to the base frame, and wherein the motion unit is rotationally adjustable around a pitch axis relative to the base frame.

10. The exercising device according any of the preceding claims, comprising an alignment unit for aligning the motion unit with an anatomical part of the individual, such as a hip, a knee and / or a shoulder of the individual.

11. The exercising device according to claim 10, wherein the alignment unit comprises a light source, such as an LED or a laser, and wherein the alignment unit is positioned on the motion unit and is moved and / or rotated together with the motion unit, and wherein the alignment unit is individually adjustable, such as tiltable and / or height adjustable relative to the motion unit.

12. The exercising device according to any of the preceding claims, configured for automatically adjusting the position of the motion unit relative to the base frame for adaptation to the individual, for example based on an alignment unit.P7479PC003313. The exercising device according to any of the preceding claims, comprising a force generator for energizing the motion unit, wherein the force generator is based on a pneumatic pump, an electric motor, a hydraulic pump, a spring and / or a magnet14. The exercising device according to claim 13, wherein the force generator is configured to provide actively controlled resistance in both extension and retraction directions synchronized with movement phase transitions.

15. The exercising device according to any of the preceding claims, wherein the exercising device is portable, for example wherein the base frame is supported on wheels.

16. A method for prevention of muscle loss in an individual by performing at least one eccentric and / or concentric strength exercise of a limb of the individual, the method comprising the steps of:• providing an exercising device according to any of the preceding claims,• laterally, longitudinally and / or rotationally adjusting the motion unit relative to the base frame to adapt to the limb,• attaching a foot of the limb of the individual to the limb attachment component,• defining at least one eccentric and / or concentric strength exercise of the individual in the form of a predefined input, and• .activating the exercising device based on the predefined input.

17. The method according to claim 16, wherein the lateral and longitudinal adjustment of the motion unit is provided with feedback and / or guidance, such as optical feedback and / or guidance, from an alignment unit.

18. The method according to any one of claims 16-17, comprising receiving indications and / or feedback from the limb attachment component regarding unwanted flexion and / or pressure difference of the foot of the individual duringP7479PC0034 concentric exercises.

19. The method according to any one of claims 16-18, comprising monitoring plantar flexion via the limb attachment component and adapting the force-time profile based on the detected plantar flexion, preferably adapting the force-time profile in real-time during the exercise.

20. The method according to any one of claims 16-19, wherein the individual is located in a bed, wherein the exercise device is separate from the bed and wherein the base frame of the exercise device initially is attached to the bed.

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