Training device for performing muscle training for one muscle

Description

[0001] The invention relates to a training device for carrying out muscle training of a muscle, in particular a specific muscle, of a person, comprising a control unit, a base body and a load measuring device arranged on the base body, wherein the muscle, in particular the specific muscle, is in contact with the load measuring device in a usage position of the person and the load measuring device has one or more load sensors for determining a load exerted by the person on the load measuring device at a respective measuring point correlated with a partial region of the muscle at a respective measuring point position.

[0002] Training devices of the aforementioned type are known, for example, in which the sitting position of a person sitting on a chair can be detected using corresponding load sensors. Furthermore, load sensors are generally known in seating furniture or other devices, for example. However, interactive training is not possible with such devices. Document JP2014068659A discloses a training device according to the preamble of claim 1.

[0003] The object of the invention is to improve the state of the art.

[0004] The object is achieved by a training device according to the features of claim 1.

[0005] This allows for interactive interaction with the training device through the interaction of the control unit, the signaling unit, and the load measuring device. For example, the person receives a signal from the signaling unit to perform a specific muscle contraction. Upon successful completion of the muscle contraction, they receive a positive success signal, such as positive feedback from the signaling unit. This makes the training success directly recognizable and, for example, can also be recorded over the long term. Conversely, if the corresponding muscle is not yet contracting sufficiently, a negative success signal would be output, which, for example, would motivate them to perform further muscle contraction.

[0006] The following terms should be explained in this context: A "training device" describes a technical, particularly interactive, device by means of which a person can train a specific muscle. The training device comprises, for example, mechanical components, sensors, and a corresponding control unit, and can thus also provide feedback to the person. "Performing muscle training" describes the interactive contraction of a muscle, particularly a specific muscle, which, for example, achieves a therapeutic effect for the muscle, a strengthening of the muscle, or long-term relaxation of the muscle through an appropriately guided and controlled short-term contraction of the corresponding muscle.A "muscle" is a contractible organ of a living being and in this context is to be understood not only as an individual muscle, but also more broadly as a muscle group that is representative, for example, of a specific movement or a specific training goal.

[0007] In this context, a "specific muscle" refers to a defined muscle, for example, one to be trained for sports medicine, or a corresponding muscle group, which can be detected using load sensors, separated from, for example, surrounding muscles or muscle groups, and subsequently trained specifically. This allows the corresponding muscle contraction of this specific muscle to be performed and evaluated, for example, as part of muscle training, physiotherapy treatment, or even sports medicine diagnostics. For example, this specific muscle is a flexor, i.e., a bending muscle located, for example, on the back of a thigh.A "person" is, for example, a human being, whereby the training device can be used not only for humans, but also for a variety of living beings with corresponding muscles, for example also for the corresponding training of animals.

[0008] A "control unit" can be, in particular, an electronic unit and / or a computer, which is configured to receive corresponding signals, to generate corresponding results therefrom by means of, for example, an algorithm, and to output these, so that, for example, corresponding further technical units are controlled, stimulated or influenced by means of an output.

[0009] A "base body" is, for example, a frame, a base structure, or another mechanical component that holds essential components of the training device, particularly in a geometric relationship. For example, a base body of the training device can be the frame of a chair, but the base body can also be flexible, pliable, or similarly designed, for example, a fabric layer in the form of a mat or a sports mat.

[0010] A "load measuring device" can be a technical, mechanical, electromechanical, or electronic device by means of which a load can be recorded and measured. In the simplest case, such a load measuring device is a mechanically translated weighing device, although electronic configurations for determining and electronically converting corresponding loads can also be referred to as such. Using these load measuring devices, a "load profile" is then recorded. This load profile describes, for example, a spatial distribution of different loads or a spatial change in different loads along one, two, or even three spatial dimensions, particularly as a function of a temporal progression.In this context, it should be noted that the respective terms in connection with the term "load" can, in the simplest case, refer to a load in the sense of a force or a pressure, but can also refer to a quantity derived from it, such as a contact determination or a rate of change or change of a contact, a force or a pressure or another load quantity, which is or are indicative of the muscle contraction.

[0011] A person's "use position" is the position the person or living being assumes relative to the intended user of the training device. On a chair, for example, this position would be sitting upright, while on a mat, it would be lying flat. For other training devices, the use position should be assumed analogously.

[0012] A "contact" describes the physical contact of the respective muscle with the load measuring device at a specific point or, for example, over a specific area, so that, for example, the person lies on the load measuring device, sits or is brought into contact with the load measuring device in another way and / or is kept in contact with it.

[0013] The load-measuring device comprises various "load sensors" or even a single load sensor, which can be designed as a mechanical, electromechanical, or electronic sensor and can detect a corresponding "load" as described above and transmit it, for example, in the form of a mechanical or electronic signal. For this purpose, a corresponding "sub-area" of the muscle—i.e., a specific section of a muscle, a part of the muscle that is significant for sports medicine, for example, or a volumetrically significant part of the muscle that may be characteristic of a muscle contraction—is in contact with the load-measuring device.Each such sub-area of the muscle is in contact with a respective correlated "measurement point," i.e., a corresponding measuring point or location located at a respective "measurement point position" within or on the load-measuring device. Thus, a relationship exists between the respective measuring point and the corresponding measuring point position to the respective muscle or to the respective sub-area of the muscle on the load-measuring device, allowing a traceable, geometrically determined, and / or reproducible location for the respective load to be detected.

[0014] A "signaling unit" is a technical device, such as an electrical or electronic unit, capable of transmitting a corresponding signal to a person in the form of a "contraction signal," i.e., an instruction to perform a muscle contraction. For example, the signaling unit could be a lamp, a screen display, or even an acoustic signal.

[0015] Using the signal unit, a contraction signal can be sent to the person, so that the person then performs a "signaled muscle contraction"—that is, a planned and executed muscle contraction—based on the contraction signal. A "successful execution" is achieved, for example, when the signaled muscle contraction exerts sufficient load on the load-measuring device.

[0016] For this purpose, a "comparison" is performed, which then outputs a "positive success signal" if the load profile and the reference load profile "match" the determined load profile, i.e., if the load profile and the reference load profile sufficiently match the goal to be achieved. Such a positive success signal can be, for example, an acoustic, visual, or textual output that can be interpreted accordingly and is initiated by the control unit. In contrast, a "non-match" describes the fact that the load profile and the reference load profile deviate so significantly from each other according to the desired training success that training success can no longer be guaranteed.In this case, a "negative success signal" is output, which is output, for example, in the form of a warning tone, a textual output to repeat the corresponding signaled muscle contraction, or similarly.

[0017] In order to make the training device particularly user-friendly, the signal unit has an optical display unit, in particular a screen, so that an optical contraction signal can be output to the person by means of the optical display unit.

[0018] Such an "optical display unit" is designed in such a way that the person can output an "optical contraction signal" - i.e. a signal that can be perceived by the eyes - with the request to carry out the signaled muscle contraction by means of his or her eyes and thus functionally independently of corresponding physical movements.

[0019] According to the invention, the signaling unit comprises a mechanical, in particular an electromechanical actuator, wherein a mechanical contraction signal and / or a mechanical success signal can be output to the person by means of the mechanical actuator. Thus, for example, by means of an "actuator" that can output a "mechanical contraction signal," for example in the form of vibrations, pressure pulses, or a single pressure, the person can directly contract a corresponding muscle, which is also arranged on the actuator, for example. A "mechanical success signal" can be implemented, for example, in the form of a slight vibration, so that the person is signaled, for example, by this slight vibration, that the muscle contraction has been successfully performed.

[0020] In order to actively stimulate muscle contraction using the training device, the signaling unit includes an electrical stimulator, which enables electromyostimulation of the muscle. An "electrical stimulator" consists, for example, of several electrodes arranged on the base body. These electrodes are in contact with the corresponding muscle or muscle group and emit an electrical signal, which enables so-called "electromyostimulation," i.e., electrical stimulation of muscle contraction from outside the body.

[0021] In one embodiment, the load sensor or the load sensors is or are a pressure sensor or pressure sensors, wherein the pressure sensor or the pressure sensors is or are designed as a switching pressure sensor or switching pressure sensors, as a capacitive pressure sensor or capacitive pressure sensors and / or resistive pressure sensor or resistive pressure sensors and / or several load sensors are arranged in particular along a first main direction and / or along a second main direction in a matrix-like arrangement on the load measuring device.

[0022] Thus, muscle contraction can be detected via corresponding forces or measured or derived pressures on the load measuring device. If an arrangement is arranged in a matrix along a first main direction and a second main direction, for example, a geometrically defined network of pressure sensors or other load sensors can be created, which greatly simplifies the evaluation of muscle contraction at different measuring points.

[0023] A "pressure sensor" can be a measuring element for determining pressure, i.e., for determining a force per area. Such a pressure sensor can also be designed in the form of a force sensor. For example, the pressure, i.e., the measured force relative to the respective influence area, can be determined from the measuring point position and a corresponding influence area for the force sensor assigned to the associated measuring point. Such a pressure sensor of any design can therefore also be synonymously referred to as a force sensor and also function as a force sensor. A "switching" pressure sensor or switching force sensor can, for example, generate a switching signal in the form of 0 / 1 information when a limit force or pressure is exceeded, so that, for example, the loading of the corresponding force sensor or pressure sensor is detected.If, for example, a capacitive pressure sensor and / or a resistive pressure sensor or another suitable sensor is used, it is also possible to qualitatively determine how large a corresponding pressure or how large a corresponding force is at the respective measuring point.

[0024] A "principal direction" in this context is, for example, a respective axis of a coordinate system, whereby both Cartesian coordinates and polar coordinates, or another suitable arrangement, can be used to arrange the corresponding load sensors in a matrix-like manner. Specially adapted schemes or arrangements, for example, curved ones adapted to a muscle's course, are also useful here.

[0025] In order to be able to carry out a more detailed evaluation with regard to the signalled muscle contraction, the control unit is set up to determine a load area from the measuring point position of several measuring points, a load intensity at a respective measuring point and / or a load volume by means of a superposition, in particular by means of a multiplication and / or by means of a weighted multiplication of the load area with the respective load intensity at the respective measuring point.

[0026] A "load area," for example, is the total area of those measuring points that exhibit a change in load, or which, if the comparative load profile corresponds to a resting position of the load measuring device, exhibit a measurable load, for example, above a limit value to suppress measurement inaccuracies. This allows a statement to be made in the form of a contact area analogous to the effective contact area of the respective muscle with the load measuring device during muscle contraction. For example, a length, a width, or even an area, for example in [cm²], can be used to make a statement about the strength or form of the muscle contraction.A "length" can be determined, for example, along a main direction of the muscle, a "width" correspondingly orthogonal to it, and an "area size" can be determined, for example, as an area integral, an interval summation, or a numerical summation of the corresponding measurement points over the planar or area-analogous spatial dimensions of the measurement point positions, the latter, for example, in the case of a slightly curved contact surface with the muscle. Analogously, a "shape," i.e., a geometry of the load surface, can be determined, which, for example, allows for a statement about muscle contraction in specific sub-areas of the muscle in order to evaluate training success.

[0027] A "load intensity" describes a signal that can provide information about the strength of the respective signal, for example between a base load of "0" and a maximum load of "1" or, for example, in the form of a force in Newtons on a scale appropriate to the measurement purpose, so that a corresponding load intensity at the respective measuring positions results in an amplitude-related load profile.

[0028] In order to be able to make an even more precise statement about the overall strength of the muscle contraction, an overlay intensity of the muscle contraction is determined by superimposing the determined load area with the determined load intensities of the muscle contraction at the respective measuring points, wherein the overlay is formed in particular by means of a multiplication and / or a weighted multiplication of the load area with the respective load intensity at the respective measuring point and / or by integrating the load intensity over the load area, so that a load volume is determined.

[0029] A "superposition" of the determined load area with the determined load intensities describes a mathematical operation taking into account several dimensions, for example the spatial dimensions of the load or a temporal dimension of the load at certain measuring points at a certain time, the corresponding load of the muscle contraction.For example, the load area is multiplied by the respective, in particular amplitude-related, load intensity at the respective measuring point, or the load intensity is mathematically calculated continuously over the load area in the form of an integration, or a weighted multiplication is carried out in which, for example, certain areas, namely, for example, parts of the muscle that are particularly relevant from a sports medicine perspective, are taken into account separately or, for example, more intensively at their contact surface with the load measuring device.Integration can also be performed in the sense of forming a mathematical integral of the load intensity over the load area, for example, by forming respective partial integrals over specific areas of the load area, or by determining the superposition by summing discrete calculations at specific measurement points in the form of a numerical calculation as a sufficiently accurate approximation to the mathematically precise integral. The result is then, for example, a summed numerical value formed from a matrix of individual load values at specific measurement points, which is characteristic of the contraction performed by the muscle.Alternatively or additionally, the measured values can be integrated or summed up over time, so that, for example, the work performed in terms of training performance of the respective muscle can be determined over a time period selected for training and can be used to provide feedback on training success.

[0030] A "load volume" is the measured value which, as this numerical value, takes into account both the area, namely the load area, and a corresponding local load intensity, its distribution or the like, and maps it analogously to a summation of the individual load intensities over the load area, so that the load volume is characteristic of, for example, the total work performed by the muscle at the respective measurement time.

[0031] In this context, it should be mentioned that the multiplication, integration, or other mathematical operation for the present invention can be carried out both mathematically precisely from correspondingly derived functions, as well as numerically, interval-nested, or in a similar manner, whereby the respective implementation can, for example, take into account a corresponding grid or corresponding distances between measuring points, in the respective arrangement of the measuring point positions, or the like. According to the invention, not only the mathematical precision of determining the load at the respective measuring point is crucial, but in particular the overall metrological image of the corresponding muscle contraction on the load measuring device in order to be able to provide appropriate feedback on the strength, configuration, and quality of the muscle contraction with regard to training success.

[0032] In one embodiment, the control unit comprises a smartphone, a tablet computer, and / or a personal computer. Using such electronic devices, typically found in an office or household, the control unit can also be implemented in the form of software on the corresponding electronic device, so that, for example, in an office, a suitably equipped chair can be connected as a training device to a corresponding personal computer present at the office workstation, so that the training device is formed by the existing computer and a specially designed office chair.

[0033] According to the invention, the training device comprises a chair or armchair. The training device can also be essentially formed by the chair or armchair with a correspondingly assigned control unit. In one embodiment, the load measuring device is arranged in a seat, in a backrest, in a footrest, in an armrest, in a headrest, and / or in a neckrest of the chair or armchair, and / or in a lying surface of the lounger.

[0034] In this way, corresponding muscles or muscle groups that are in contact with the backrest, a footrest or an armrest, a headrest and / or a neck support of the chair or armchair can be trained in a targeted manner.

[0035] Furthermore, a training device not according to the invention may also comprise a mat, a sports mat, a yoga mat, a piece of clothing or the like.

[0036] The invention will be explained in more detail below using exemplary embodiments. Figure 1 shows a schematic representation of a workstation with an integrated training device in an isometric view, Figure 2 shows a schematic representation of a sensor mat for measuring loads acting on the sensor mat in an isometric view, and Figure 3 shows a three-dimensional diagram for representing corresponding sensor signals from sensor mats.

[0037] A workstation 101 has an office chair 103 with a seat 105, a backrest 107, and two armrests 109. The office chair can also have a headrest and / or a neckrest (not shown in this example). Furthermore, the office chair 103 has a frame 110. The office chair 103 stands at a desk 111 and has sensor mats 201 in its seat 105, sensor mats 221 in the backrest 107, and sensor mats 231 in the armrests 109 for detecting pressures acting on the respective components. Furthermore, actuators 215 are shown as examples in the seat 105. Arranged on the desk 111 is a computer 113 with a screen 114, which is designed as a conventional desktop PC and is typically used for working at the workstation 101.

[0038] The computer 113 has a schematically illustrated communication module 115, which in the example shown is a Bluetooth module. The communication module 115 can thus both transmit and receive signals. The office chair 103 also has a communication module 209, which can exchange data with the communication module 115 using the Bluetooth protocol.

[0039] A sensor mat 201 described as an example with a function analogous to sensor mats 221 and 231 has a mat body 203 made of a fabric. Mat body 203 is connected to communication unit 209 by a cable 205. Within mat body 203, several pressure sensors 207 are arranged within a matrix field 208 along transverse axes 281 and longitudinal axes 283. These pressure sensors are technically designed as force sensors. The correlation of force to pressure is formed from a measured force at a respective measuring point 206 and a respective reference surface 211 by relating the measured force to the respective reference surface 211, so that a pressure at the respective measuring point 206 can be specified. Therefore, in the following, "pressure" will only be referred to in the relevant context, even if a force measurement is technically performed.The pressure sensors 207 are resistive pressure sensors and, as described above, can detect a local pressure acting orthogonally on the mat body 203 at a respective measuring point 206. From the arrangement in the matrix field 208, a corresponding pressure load on the mat body 203 can be deduced for each measuring point 206. This results in a respective measured value analogous to the respective pressure load. The communication module 209 serves to record the measured values transmitted by the pressure sensors 207 via the cable 205 in the form of pressure signals and forward them to the communication module 115 of the computer 113, whereby the computer 113 can then, for example, generate a pressure map (see also . Figure 3) can be generated, or a corresponding tabular recording of sensor signals from the pressure sensors 207 over corresponding time periods or in time intervals is also possible. In the present example, the communication module 209 records each signal from the pressure sensors 207 at a frequency of 60 Hz, i.e., 60 measurements per second, and forwards them to the computer 113.

[0040] The sensor mat 201 on each side of the seat 105 records corresponding pressure data from a person sitting on the chair 103, namely the pressure of the respective muscle in contact with the sensor mat 201. In this case, this is the "m. gluteus maximus," i.e., the large gluteal muscle, and the "m. semitendinosus," i.e., one of the posterior flexor muscles of the thigh. In the resting position, this results in a specific measurement pattern, i.e., a pressure distribution based on the person's own weight, with the person then subsequently tensing the corresponding muscles for a measurement. As an example, a diagram 301 shows a corresponding function 311 and a function 315 for the respective gluteal area and respective thigh when the muscles are tensed at a specific time during the measurement.

[0041] The diagram 301 has an abscissa 303, which represents a direction transverse to the seat surface 105 of the chair 103. Orthogonal to this, the diagram 301 has an ordinate 305, which runs analogously to the seat depth on the seat surface 105. An applicate 307 is in turn orthogonal to this, so that a three-dimensional Cartesian coordinate system with a coordinate space 309 is spanned. The abscissa 303 and the ordinate 305 define a plane parallel to the seat surface 105, and the applicate 307 represents an axis for representing a pressure on the sensor mat 201, specifically at the respective measuring point 206 in the plane of the abscissa 303 and the ordinate 305.

[0042] In coordinate space 309, a function 311 for mapping the person's buttocks and thighs on one side of the body, and a function 315 for mapping the muscle groups on the other side of the body are represented. Function 311 has various measured values 331 and a peak 312, i.e., the point of maximum pressure; analogously, function 315 has various measured values 335 and a peak 316. Likewise, function 311 and function 315 form a base area 313 and a base area 317, which describe a corresponding pressure area on the seat surface 105. By tensing the muscles, for example, in the rear thigh area, the person exerts a pressure on the seat surface 105 that is variable relative to the resting position. This pressure is detected by the sensor mats 201 and processed by the computer 113.In this case, a respective volume below the respective function can also be determined from the xy plane formed by the abscissa 303 and the ordinate 305 in order to derive the work performed by the muscle from it.

[0043] The actuators 215, which can also be present in the backrest 107 and in the armrests 109 in an analogous and equivalent manner, are designed as piezo actuators and can, controlled by the computer 113 via the communication units 115 and 209, emit vibration signals of different intensity and frequency and thus transmit them to a person sitting on the chair 103.

[0044] With the described equipment, the workstation 101 can thus be used as a training device, for example when fatigue occurs in corresponding muscle groups due to prolonged sitting at the desk 111, or when a corresponding period of time has passed with the risk of fatigue of these same muscles. Software for operating the training device is installed on the computer 113, which simultaneously transforms the computer 113 into the control unit for the office chair 103. First, a corresponding load profile analogous to function 311 and function 315 is recorded while the person is at rest, whereby this is done using the sensor mat 201 in the seat 105. At the same time, the resting signals of the corresponding muscles are recorded using the analogously designed sensor mat 221 in the backrest 107 and the analogously designed, but significantly smaller, sensor mats 231 in the armrests 109.

[0045] Using the example of the seat 105, a corresponding stimulation and encouragement for muscle contraction as training will now be explained:

[0046] The actuators 215 are controlled and vibrated by the software on the computer 113 via the transmission path formed between the communication module 115 and the communication module 209, for example after the expiration of a motionless phase detected by the sensor mats 201, so that the person sitting on the chair (not shown) can contract the corresponding muscle groups arranged on the back of the thigh, stimulated by the vibration.If the sensor mats 201 detect sufficient muscle contraction by comparing functions 311 and 315 with corresponding signals in the resting position, or if a predetermined contraction duration is reached, the actuators 215 emit a slight signal in the form of a slight vibration that is significantly lower than the signal stimulating muscle contraction, so that the person sitting on the chair is informed of the success or end of the corresponding exercise. Analogously, a visual display on the screen 114 and / or an acoustic display can also be provided. If the corresponding muscle contraction is not performed satisfactorily, the stimulation can be repeated, for example, using the actuators 215, so that the muscle contraction is then performed.Alternatively or additionally, an electrical stimulator (not shown) can also be arranged, for example in the seat surface 105, which carries out electromyostimulation by means of electrical impulses and thus supports or triggers the muscle contraction.

[0047] Analogously, for example, the stimulation of the back muscles would be initiated by means of the sensor mats 221 and corresponding actuators (not shown) in the backrest 107, for example by an initiated back movement, or analogously, the stimulation of the forearm muscles in conjunction with the sensor mats 231 in the armrests 109 and corresponding actuators (not shown) of a display on the screen 114 or an equivalent signal. List of reference symbols

[0048] 101Workstation 103Office chair 105Seat 107Backrest 109Armrest 110Frame 111Desk 113Computer 114Screen 115Communication module 201Sensor mat 203Mat body 205Cable 206Measuring point 207Pressure sensor 208Matrix field 209Communication module 211Reference surface 215Actuator 221Sensor mat 231Sensor mat 281Transverse axis 283Longitudinal axis 301Diagram 303Abscissa 305Ordinate 307Applicate 309Coordinate space 311Function 312Vertex 313Base area 314Reference surface 315Function 316Vertex 317Base area 318Reference surface 321Pressure volume 323Pressure volume 331Measured value 335Measured value 381Cutting plane

Claims

1. Training device (101), for carrying out muscle training for a muscle, in particular for a specific muscle, of a person, comprising a control unit (113), a main body (103) and a load measuring device (201, 221, 231) arranged on the main body (103), wherein the muscle, in particular the specific muscle, is in contact with the load measuring device (201, 221, 231) in a use position of the person and the load measuring device (201, 221, 231) has a load sensor (207) or a plurality of load sensors (207) for determining a load exerted by the person onto the load measuring device (201, 221, 231) at a respective measurement point (206) correlated with a region of the muscle at a respective measurement point position, wherein the control unit (113) has a signal unit (114, 215) and the control unit (113) is set up in such a way that a contraction signal can be emitted to the person by the signal unit (114, 215) so that the person performs a signalled muscle contraction on the basis of the contraction signal and successful execution of the signalled muscle contraction can be verified by comparing a load profile (311, 315) determined by the load measuring device (201, 221, 231) with a comparison load profile, in that a positive success signal is emitted in the event that the load profile (311, 315) and the comparison load profile correspond and a negative success signal is emitted in the event that the load profile (311, 315) and the comparison load profile do not correspond, characterised in that the training device has a chair or an armchair, and in that the signal unit (114, 215) has a mechanical actuator (215), wherein a mechanical contraction signal and / or a mechanical success signal can be emitted to the person by the mechanical actuator (215).

2. Training device according to claim 1, characterised in that the signal unit (114, 215) has an optical display unit (114), in particular a screen (114), so that an optical contraction signal can be output to the person by the optical display unit (114).

3. Training device according to claim 1 or 2, characterised in that the signal unit (114, 215) has an electromechanical actuator (215), wherein a mechanical contraction signal and / or a mechanical success signal can be emitted to the person by the electromechanical actuator (215).

4. Training device according to any one of the preceding claims, characterised in that the signal unit (114, 215) has an electro-stimulator, wherein an electromyostimulation of the muscle is made possible by the electro-stimulator.

5. Training device according to any one of the preceding claims, characterised in that the load sensor (207) or the load sensors (207) is or are a pressure sensor (207) or pressure sensors (207), wherein the pressure sensor (207) or the pressure sensors (207) is or are formed as switching pressure sensor or switching pressure sensors, as capacitive pressure sensor or capacitive pressure sensors and / or as resistive pressure sensor or resistive pressure sensors and / or a plurality of load sensors (207) are arranged on the load measurement device (201, 221, 231) in particular in a first main direction (281) and / or in a second main direction (283) in a matrix-like arrangement (208).

6. Training device according to any one of the preceding claims, characterised in that the control unit (113) is set up to determine a load area (313, 317) from the measurement point position (206) of a plurality of measurement points, a load intensity (312, 316) at a respective measurement point and / or a load volume by a superimposition, in particular by means of a multiplication and / or a weighted multiplication, of the load area (313, 317) with the respective load intensity (312, 316) at the respective measurement point.

7. Training device according to any one of the preceding claims, characterised in that the control unit (113) has a smartphone, a tablet computer and / or a personal computer (113).

8. Training device according to any one of the preceding claims, characterised in that the load measurement device (201, 221, 231) is arranged in a seat surface (105), in a backrest (107), in a footrest, in an armrest (109), in a headrest and / or in a neck support of the chair (103) or the armchair.