Isometric exercise device

Abstract

The invention relates to a device comprising a frame (1) supported on the ground, there being mounted on the frame a seat (2) and an adjustable backrest (3) on which adjustment racks (7) for selectively attaching hand-held poles (8) are installed. The frame comprises a chest stabiliser (4) supported on the user's chest, a leg press (5) and horizontal adjustment racks (6) for selectively attaching a second type of pole (9), thereby providing a device that can be adapted to any user in an easy and simple way from the seat on which the user sits.

Description

TECHNICAL FIELD

[0001] The present invention relates to isometric workout equipment, in other words, equipment that allows different muscle groups of the body to be exercised by applying pressure on support points with hardly any muscle movement, and more specifically without movement of the user's joints, thus avoiding muscle and joint injuries.

[0002] The device has been designed to offer great versatility and functionality when performing this type of exercise without shifting, maintaining the comfort and quality of execution of the exercises for all types of users, combining adjustable rigid elements in the two axes of the Cartesian plane for the application of static forces and strength straps to increase the equipment's versatility.

[0003] Therefore, the object of the invention is to provide a highly versatile and functional equipment, in which the vast majority of muscle groups can be exercised isometrically, for which it is essential to offer a structure that can be easily adapted to different user sizes, an adaptation that can be made from the same seat, i.e., with optimum accessibility to the multiple means of adjustment offered by the equipment.BACKGROUND OF THE INVENTION

[0004] The state of the art discloses equipment designed for the practice of isometric exercises, in which the use of strength straps gives them great versatility due to the ease with which they can be anchored to different points of the equipment. To further minimise the risk of injury when practising these exercises, rigid elements are preferable for the application of forces, elements that are difficult to adjust in the two axes of the Cartesian plane due to their rigidity.

[0005] Within the scope of practical application of the invention, machines for practising isometric exercises are known, such as the one described in invention patent US2020353310 A1, which describes isometric workout equipment comprising a frame supported on the ground, on which there is a seat / backrest assembly that is adjustable in a longitudinal tilt-position, and which has transversal straps for securing and stabilising the user, including a leg press, taking the form of a platform for supporting the user's feet that is arranged on a tubular structure attached to the frame, as well as a main post, coupled to the base at a first end of the same, on which there are gripping elements to perform certain types of exercises.

[0006] The problem with this device is that the adjustment of the rigid elements is limited to a single axis of the Cartesian plane for the application of forces, which directly limits the adaptability of the equipment to the user's needs.

[0007] Another problem with this type of machine affects the fluidity of the exercise routine, as it causes interruptions in the work with the equipment when it is time to change its configuration to perform other routines, making it necessary for the user to change position on the equipment in order to change the exercise or have to get up from the equipment to make the necessary adjustments to the equipment to change the exercise.

[0008] This problem increases for users with reduced mobility who require the help of another person to change position on the equipment or to make different adjustments to said equipment during the exercise routine on the equipment.

[0009] At the same time, mixed machines for performing isometric, concentric and eccentric exercises are known, such as the one described in invention patent US 2021187339 A1, which describes a device for performing exercises that has a back plate in its structure with holes along its entire length, in which holes individual horizontal bars can be arranged, in turn having carabiners arranged therein, thus offering multiple guiding points for movable straps that allow the user the option of performing different exercises and adapting them to their own morphology.

[0010] These accessories are not envisaged for performing isometric exercises, as they are movable straps, which can be shifted in multiple directions during the exercises and are therefore not static elements, as they allow the user's joints to move, especially when linked to a foot support unit, which can also be shifted synchronously with the movement of the straps.

[0011] In any case, given the ease of attaching the strength straps, it would be possible to attach said strength straps to the aforementioned individual horizontal bars transversal to the backrest, although not without certain drawbacks, such as the limitation of height adjustment imposed by the maximum number of bars that can cross the backrest horizontally, due to the thickness that said individual bars must have to withstand the leverage force that would be produced when practising an isometric exercise, as well as the possible risks and inefficiencies arising from the lack of means to prevent the longitudinal movement of the individual horizontal bars. However, in no case would they allow the attachment and adjustment of rigid elements in the two axes of the Cartesian plane for the application of static forces, since their configuration does not prevent either the longitudinal or rotational shifting of the elements that could be attached to the adjustment bars disclosed in this invention.

[0012] Lastly, document DE29515793U1 describes a device for performing isometric exercises, on which support arms can be suspended with devices for performing isometric exercises at their free outer ends.

[0013] These support arms are provided with retaining claws at their free inner ends, with which they can be hooked onto bars involved in a lattice structure. At the free outer ends opposite the retaining claws, the support arms are provided with sleeves to which rod-shaped exercise devices are fastened.

[0014] More specifically, the device includes a substantially vertical double lattice wall, based on horizontal and vertical bars, which is provided with a base plate for its stability, a plate provided with template feet by means of which it is supported on the ground.

[0015] In this way, a kind of double lattice is formed with a rectangular prismatic configuration based on horizontal and vertical bars that form a very voluminous and heavy metallic prism.

[0016] It is important to point out that the horizontal bars involved in said prismatic structure considerably limit the adjustment of the accessories envisaged in the present invention in the two axes of the Cartesian plane, since, as will be seen later in the description of the invention, the horizontal bars of the lattice described in utility model DE29515793U1 occupy a space necessary for correct optimisation of the anchoring points envisaged in the present invention.

[0017] Lastly, the large volume and weight of the structure proposed by utility model DE29515793U1 poses a problem that is practically impossible to solve efficiently for its application in isometric workout equipment such as that envisaged in the present invention. This makes it necessary to reinforce the rest of the equipment for its integration, all of which has a very negative impact on manufacturing, storage and transport / distribution costs, as well as on the implementation of the device in the final space where it is to be installed.

[0018] The present invention solves the foregoing problems in a fully effective way, offering the user a much simpler, lighter and more adaptable device, which allows the adjustment of rigid elements in the two axes of the Cartesian plane for the application of static forces. In this way, after the prior adjustment of the equipment elements to the size and needs of the user, the user can perform all the exercises of their routine from the same working position on the equipment, from which the user can make all the necessary adjustments to complete their exercise routine without having to get up from the seat, minimising the duration of interruptions in their exercise routine, as well as the possible need for help from other people when the user has reduced mobility, which has a very positive effect on the fluidity of the routine.DESCRIPTION OF THE INVENTION

[0019] The isometric workout equipment proposed by the invention is mainly made up of a fixed seat and an adjustable backrest, the structures of which are accompanied by the necessary elements for performing multiple exercises.

[0020] The adjustable backrest provides seating options for people of different heights and physical builds. The machine allows users to have their gluteal, hamstring, popliteal and calf areas (the entire posterior area of the lower body) properly supported. In this way, among other aspects, it ensures that the desired parts are correctly attached in all cases of height, so that it is not necessary for the feet to be supported on any specific area of the machine. This makes adaptation much quicker and simpler because, since it is not necessary to adjust the seat once the backrest has been adjusted, the user's own size determines the relative distances of the user with respect to the front elements of the equipment, making it unnecessary to adjust the leg press.

[0021] In accordance with the essence of the invention, the equipment comprises several mechanisms defining rigid grip areas on which static push or pull forces are applied in a controlled manner, adjustable mechanisms in the two axes of the Cartesian plane to provide maximum adaptability.

[0022] The equipment additionally includes anchoring areas for strength straps for the application of push and pull forces to increase the versatility and functionality of the equipment.

[0023] More specifically, the seat is arranged on a frame that is supported on the ground, to which said seat is attached, which is slightly tilted with respect to the horizontal; in other words, it has a wedge-shaped configuration, including transversal securing straps for fixing the user's legs, as well as the support area for the popliteal and hamstring regions that emerges downwards from the front end of said seat and is linked to the aforementioned frame. The leg securing straps prevent areas of the body such as the pelvis or legs from moving when force is applied to another area, helping to generate targeted and optimal force stimuli. If movement occurs, the efficiency of the stimulus in the target area will be lost and likewise, if the force circuit is not closed or secured in the distal area, the application of force in the target area (force intensity) will be limited.

[0024] The seat may include both internal and external side leg support elements for the application of leg opening and closing forces (hip abduction and adduction), which are equipped with positional adjustment means to adapt to different leg girths. These supports may include sensing means for sensing the forces exerted by the user's legs on these elements.

[0025] In particular, the equipment is completed with a pair of poles for performing exercises such as rowing or chest presses, which are linked to racks arranged on both sides of the seat, based on parallel bars, having aligned holes, which allow the poles to be selectively linked along one or another of said bars, through the holes in the same in the horizontal plane, which will be immobilised by means of the corresponding pins. It also has another pair of poles for performing shoulder press and pull down exercises, which are linked to racks equivalent to the previous ones arranged on the sides of the framework of the backrest.

[0026] This rack-based structure makes it possible to adjust the position of the poles in the two axes of the Cartesian plane, since these poles are rigid elements that can be gripped at different points along their length, thus providing a system for adjusting the static force application point in all three dimensions, offering maximum versatility in adjusting the force application point.

[0027] Another mechanism involved in the equipment is the chest stabiliser, which consists of a tilted telescopic strut, which emerges from the base of the frame towards the user's chest, which upper end includes a tubular element with a set screw or equivalent element, which allows the axial adjustment of a tubular profile that ends at the front in a padded element intended to be supported on the user's chest, for the performance of rowing exercises, among others.

[0028] At the same time, the equipment has a leg press, which defines a static contact surface for the user's feet, a surface that is arranged on a tubular structure that ends in a double platform that is tilted and raised above the seat.

[0029] As for the backrest, it is made up of a structure that can be adjusted by means of two adjustment systems with pins, which allow for translation and rotation of the contact area.

[0030] An upholstered support base is involved in the same, said base being attached to a metal framework, a framework that is linked at the bottom and articulated to an articulated quadrilateral structure on which upper base there is a guide bar on which a slider can be moved. Said slider is linked to the framework of the backrest in its middle area by means of a bi-articulated bar, the slider having means of selective securing along the guide bar, which allows the tilt of said backrest to be adjusted.

[0031] The backrest includes adjustable straps for securing and stabilising the user's torso in certain types of exercises, in order to avoid loss of exercise efficiency in the target area.

[0032] Furthermore, the articulated quadrilateral by means of which the backrest is linked to the frame allows the backrest to be adjusted in forward or rearward translation to adapt to different user sizes. For this purpose, one of the oblique bars of said articulated quadrilateral extends at the bottom in a section which end is provided with a hole for the passage of a securing element which, in the different relative positions of this part, can be selectively fitted into a series of holes provided in a plate attached to the frame, thus being able to secure said mechanism in different positions which determine different stable positions that are further forwards or backwards for the backrest itself.

[0033] Lastly, the strength straps for performing exercises can be selectively anchored, depending on the exercise, to the holes in the adjustable racks of both the seat and the backrest, as well as to the various anchoring points distributed throughout the equipment for this purpose.

[0034] It only remains to be noted that the strength straps and each of the rigid elements for applying force may be individually equipped with sensors, so that the efforts made by the user on each of them can be monitored by the corresponding software, either through a screen, display, or even external devices such as mobile phones, tablets and the like.

[0035] Based on this structure, the equipment of the invention offers the following features and advantages: The equipment allows the adjustment of rigid elements in the two axes of the Cartesian plane for the application of static forces, elements which, due to their rigidity, can be gripped at different points along their length, thus providing a system for adjusting the static force application point in all three dimensions, offering maximum versatility in adjusting the force application point. The machine is designed to be able to adjust the elements to the size and needs of the user at the beginning of the workout, without requiring the user to get up from the seat during the exercise routine, as the various means of adjustment are accessible from the working position. Therefore, it minimises the duration of interruptions in the exercise routine, as well as the possible need for help that users with reduced mobility may have, which has a very positive effect on the fluidity of the routine. The adjustments allow all people with different body proportions to exercise in the same way and under the same conditions of quality of execution. In this way, people of very different sizes will be able to apply force in the different exercises from similar joint positions, as well as achieve the same muscular mechanics (stimulus) in each of the exercises. The translation adjustment of the backrest allows all users to have their gluteal, hamstring, popliteal and calf areas (the entire posterior area of the lower body) supported with their back supported on the backrest. Furthermore, the rotation adjustment allows exercises to be performed that require a certain tilt of the back, such as leg presses, among others. The seat is designed in such a way that the user has their sacral and lumbar area in a neutral position, the hip below 90 degrees of flexion to reduce lumbo-sacral tensions when practising the different exercises. Attachment systems ensure that areas of the body such as the pelvis or legs do not shift when a force is applied to another area, helping to generate targeted and optimal force stimuli. In the event of movement, the efficiency of the stimulus in the target area will be lost and likewise, if the force circuit is not closed or secured in the distal area, the application of force in the target area (force intensity) will be limited. The individualisation of the rigid elements for applying force makes it possible to individually equip each of the force application elements, both strength straps and rigid elements, with a sensor. This placement of individual sensors makes it is possible to compare efforts in exercises in which the force is applied bilaterally, as in the case of the shoulder press, which makes it possible to detect possible force asymmetries, improving the quality of monitoring of the exercises. The gripping or force application points are located and oriented in such a way as to make the machine intuitive and easy to use. Much of this muscle-joint settling is achieved almost unconsciously since, at these points, the location and shape means that when force is applied, the rest of the body settles into an ideal position. A correct adaptation of the machine's structure to a person's muscle-joint biomechanics is achieved, as well as other aspects related to safety, quality, ease of use and fluidity. The force application points are located and oriented in such a way that the application of force generates the ideal force vectors to stimulate each of the specific muscle groups of each exercise. The pulls or pushes with the arms respect the neutrality of the wrists as well as the radioulnar joint so that the joints that are not targeted in the exercise maintain their integrity, i.e., far from being injured. The force application points facilitate the neutrality of the shoulder girdle as well as the spinal column, finding the greatest safety in the application of force. The force application points are adjustable in order to apply forces from neutral to intermediate joint positions, providing alternatives for the general public, but also solutions for injury or pregnancy profiles. DESCRIPTION OF THE DRAWINGS

[0036] As a complement to the description that will be provided herein, and for the purpose of helping to make the features of the invention more readily understandable, according to a preferred practical exemplary embodiment thereof, said description is accompanied by a set of drawings constituting an integral part thereof in which, by way of illustration and not limitation, the following is represented: Figure 1 shows a perspective view of isometric workout equipment made according to the object of the present invention. Figure 2 shows an opposite perspective view of the equipment of figure 1. Figure 3 shows a perspective view of the frame supported on the ground from which the equipment of the invention emerges. Figure 4 shows a perspective view of the mechanism associated with the backrest involved in the equipment of the invention. Figure 5 shows a view of the assembly of figure 4 installed on the assembly of figure 3. Figure 6 shows a perspective view of the detail of the control associated with the tilt adjusting mechanism of the backrest. Figure 7 shows a detail of the control associated with the translation adjusting mechanism of the backrest. Figures 8 and 9 show respective profile views of the backrest in different operating positions. Figure 10a shows a perspective view of the leg press involved in the equipment of the invention. Figure 10b shows a perspective view of the anchors arranged on the leg press and on the fixed part of the telescopic strut of the chest stabiliser. Figures 11 to 13 show different views of the chest stabiliser involved in the equipment of the invention. Figure 14 shows a perspective detail of one of the adjustable racks and its corresponding pole, elements that are linked to the backrest of the equipment. Figure 15 shows an enlarged detail of the means for attaching the pole to the adjustable rack. Figure 16 shows a detail of the assembly of the previous figure duly adjusted. Figure 17 shows a perspective detail of one of the side racks in position to be mounted on the frame. Figure 18 shows a perspective view of a pole mounted on a rack as shown in figure 17. Figure 19 shows a detail of the means for attaching the pole to the rack. Figure 20 shows a perspective detail of one of the attachment straps involved in the equipment. Figure 21 shows a front elevation detail of the equipment at the level of the attachment straps for the user's legs. Figures 22 and 23 show respective profile and perspective views of the device in use, and more specifically performing shoulder press and pull down exercises. Figure 24 shows a perspective view of the equipment in use, performing chest press exercises. Figure 25 shows a profile view of the equipment in use, performing rowing exercises. Figures 26a and 26b show a profile view and a perspective view, respectively, of the equipment in use, performing leg press exercises. Figures 27a and 27b show a perspective view and a front elevation view, respectively, of the device in use, performing front spinal flexion exercises. Figure 28 shows a front view of the device in use, performing side spinal flexion exercises. Figure 29 shows a perspective view of the device in use, performing spinal extension exercises. Figure 30 shows a profile view of the device in use, performing knee flexion exercises. Figure 31 shows a perspective view of the device in use, performing elbow flexion exercises. Figure 32 shows a perspective view of the device in use, performing spinal rotation exercises. Figure 33 shows a side view of the device in use, performing shoulder abduction exercises. PREFERRED EMBODIMENT OF THE INVENTION

[0037] In view of the figures shown, and in particular figures 1 and 2, it can be seen that it comprises a frame (1) supported on the ground, on which there is a seat (2) and a backrest (3) with installed adjustable racks (7) for selectively attaching a pair of hand-held poles (8) and strength straps (37), a chest stabiliser (4), a leg press (5) and horizontal adjustable racks (6) for selectively attaching a second pair of hand-held poles (9), handholds (48) and strength straps (37), as well as different additional selective anchoring points for the strength straps (37) arranged at different points of the equipment.

[0038] More specifically, the seat (2) is designed in such a way that the user has their sacral and lumbar area in a neutral position, the hip below 90 degrees of flexion to reduce lumbo-sacral tensions when practising the different exercises, having a wedge-shaped configuration, with a slight tilt with respect to the horizontal, including transverse straps (10) for securing and stabilising the user's legs, including a support area for the calf muscles and the back of the knees (11) that emerges downwards from the front end of said seat and is linked to the aforementioned frame, also including straps (10) for securing and stabilising the user's legs. Said transverse straps (10) for securing and stabilising the legs are used selectively based on the exercise to be performed.

[0039] According to figures 4 to 9, the backrest (3) comprises an upholstered base (12), attached to a metal framework (13), which has securing straps (44) that can be used selectively depending on the exercises to be performed, to secure and stabilise the user's torso. In this embodiment, said securing straps (44) are linked to the sides of the backrest (3) and to an anchor (45) on the fixed part of the telescopic strut (26) of the chest stabiliser (4).

[0040] Furthermore, the metal framework (13) of the backrest is linked at the bottom via a joint (14) to the upper base (15) of an articulated quadrilateral structure, said upper base (15) on which there is a guide (16) along which a slider (17) can be moved and which is linked to the middle area of the metal framework (13) by means of a bi-articulated bar (18).

[0041] The slider (17) is selectively secured along the guide (16) by means of a first lever (19) accessible to the user from the seat itself, thus controlling the tilt of the backrest (3).

[0042] This lever actuates a pin against the tension of a spring, which can be selectively engaged in an alignment of holes made in the guide (16) itself.

[0043] At the same time, the articulated quadrilateral by means of which the backrest is linked to the frame allows the backrest to be adjusted in forward or rearward translation to adapt to different user sizes. For this purpose, one of the oblique bars (20) of said articulated quadrilateral extends at the bottom in a section which end is provided with a hole in which there is a pin (22) that can be actuated by means of a second lever (21) against the tension of a spring, as shown in figure 7, which can be selectively fitted into a series of holes (23) provided in a plate or platen (24) attached to the frame (1).

[0044] In this way, and as shown in figures 8 and 9, the variation in the configuration of the articulated quadrilateral causes the backrest to shift forwards or backwards, all of which is controlled by the second lever (21), which is also accessible to the user from the seat.

[0045] As for the leg press (5), and according to figure 10, it is made up of bars (5') welded or bolted to the frame (1), having a square section, arranged in such a way as to provide the desired surface and resistance, an anti-slip sheet (25) being fixed to this structure, which provides a double platform for supporting the user's feet, with a tilt of between 45° and 65°, preferably 65°. Additionally, the bars (5') and the lower edges of the platforms for supporting the feet may include anchors (46) for selectively coupling strength straps (37).

[0046] A chest stabiliser (4), shown in figures 11 to 13 and taking the form of a telescopic strut (26), is in turn linked to this structure with selective securing means (27), such as a stud, pin or the like, which ascends at an angle of about 70° through the centre of the structure of the press (5) and welded at two points at different heights, thus increasing the resistance of said leg press, the upper end of the strut being mounted with a tubular element (28) with a set screw (29) or equivalent element, which allows the axial adjustment of a tubular profile (30) that ends at the front in a padded element (31) intended to support the user's chest. This allows this padded element to be horizontally adjusted to define a stabilisation point for the user's chest when performing different types of exercises. Additionally, the tubular element (28) may include an anchor (47) for the selective coupling of strength straps (37).

[0047] According to figures 1, 2, 14, 15 and 16, adjustable racks (7) are screwed on the sides of the backrest (3), and more specifically to the metal framework of the backrest, on each side, although these racks could also be welded. These racks comprise two end crosspieces between which there are a series of bars parallel to each other and parallel to the backrest (3), provided with holes (32) in which the pair of poles (8) and strength straps (37) can be selectively installed (both bar and hole), thus allowing both transversal and vertical adjustment of the engaging point of these poles (8). The pair of poles (8) define grip areas for the user's hands when performing shoulder press and pull down exercises. Said grip areas of the poles (8), in order to improve ergonomics and achieve joint neutrality of the wrists, have a 10° downward tilt with respect to the horizontal and open outwards by 10° with respect to the longitudinal axis of the seat.

[0048] For this purpose, and in accordance with figures 15 and 16, these poles take the form of a hollow bar having a circular section, wherein the connection with the bars of the adjustable racks is carried out by means of an anchoring part (33) welded to the lower end of the bar. The anchoring part contains a fixed pin (34), so that once it is in position, a second non-return pin (35) is inserted. The geometry of the pin is such that it prevents the through part of the pin from returning.

[0049] The free end of each of these poles (8), beyond the grip area for shoulder press and pull down exercises, is curved internally and ends in an eyebolt (38) for selectively anchoring strength straps (37) for the performance of certain exercises, such as front and lateral spinal flexion exercises.

[0050] As mentioned above, the equipment provides for the use of a second pair of poles (9), as shown in figure 18, for chest press and rowing exercises, which can be adjusted to different positions by means of horizontal adjustable racks (6), as shown in figure 17, which are screwed by means of clamps (36) or welded to the frame (1). These racks comprise two end crosspieces between which there are a series of bars parallel to each other and transversal to the seat (2), having aligned holes (32), in which the second type of pole (9) and the strength straps (37) can be selectively coupled (both hole and bar), thus allowing both transversal and longitudinal adjustment of the engaging point of these poles (9). The poles (9) define two distinct grip areas, one grip area (41) for chest press exercises and another grip area (42) for rowing exercises. Taking as a reference the upper vertex of the grip area (41) for chest presses, in order to improve ergonomics and achieve joint neutrality of the wrist, this area opens outwards by 20° with respect to the longitudinal axis of the seat and opens 10° with respect to the vertical. While taking as a reference the lower vertex of the grip area (42) for rowing exercises with the same objective, this area closes 10° with respect to the longitudinal axis of the seat and opens 10° with respect to the vertical.

[0051] To couple the second pair of poles (9) to the horizontal adjustable racks (6), said poles end at their lower end in an anchoring part (33) welded to the lower end of the bar. The anchoring part contains a fixed pin (34), so that once it is in position, a second non-return pin (35) is inserted.

[0052] Furthermore, the handholds (48), which allow the user to keep their arms immobile by securing the user's torso during exercises such as leg presses, are selectively coupled to the horizontal adjustable racks (6) by means of a set of elements identical to the one described for the coupling of the second pair of poles (9).

[0053] Figures 20 and 21 show in detail the straps (10) for securing and stabilising the user's legs, the function of which is to prevent areas of the body such as the pelvis or legs from moving when a force is applied to another area, helping to generate targeted and optimal force stimuli. If movement occurs, the efficiency of the stimulus in the target area will be lost and likewise, if the force circuit is not closed or secured in the distal area, the application of force in the target area (force intensity) will be limited.

[0054] For this purpose, the frame (1) has eyebolts on each side for attaching the straps (10) for securing and stabilising the legs, which are equipped with means of hooking (39) and adjusting (40), offering different adjustments. Furthermore, to prevent chafing and constriction due to squeezing, they will include padding.

[0055] It only remains to be noted that, although not shown in the figures, the seat (2) may include both internal and external side leg support elements for the application of leg opening and closing forces (hip abduction and adduction), which are equipped with positional adjustment means to adapt to different leg girths. These supports may also include sensing means for sensing the forces exerted by the user's legs on these elements. These elements therefore stabilise the pelvis, as well as allow external and internal pushing exercises to be performed.

[0056] Based on this structure, the machine and its components will adapt to different heights and anthropometric measurements. In this case, there is a desire to cover a population of between 150 cm and 195 cm in height, ensuring the same quality of execution for all. To meet this requirement, the moving parts of the machine have the necessary adjustments for the correct performance of the exercise in all height and physical build hypotheses. In conclusion, the machine and its elements adapt to the user without requiring the user to get up from the seat, and all adjustments can be made from said seat without leaving the working position.

[0057] With regard to the modes of use of the equipment, figures 22 to 32 show, by way of example, some of the main exercises to be performed with the equipment with the aim of showing the force application areas of the rigid elements and the different areas of the equipment where the selective anchoring points of the strength straps (37) are arranged. In particular, figures 22 to 26 show exercises in which the forces are exerted on rigid elements of the equipment, while figures 27 to 32 show exercises in which the forces are exerted on strength straps (37).

[0058] Figures 22 and 23 show the performance of shoulder press and pull down exercises in which a push or pull force, respectively, is applied to the grip area of the pair of poles (8). Figure 24 shows a chest press exercise in which a push force is exerted on the grip area (41) for chest presses of the pair of poles (9), while figure 25 shows a rowing exercise in which a pull force is exerted on the grip area (42) for rowing exercises of the poles (9) while keeping the chest stabilised by supporting the chest against the padding (31) of the chest stabiliser (4). Figures 26a and 26b show different views of a leg press exercise where a push force is exerted on the leg press (5).

[0059] Furthermore, figures 27a and 27b show different views of a front spinal flexion exercise, for which the backrest has been previously folded until the free ends of the poles (8) are aligned with the vertical of the user's shoulders, in which the anchoring points (38) of the free ends of the poles (8) are used to attach the strength straps (37). Figure 28 shows a side spinal flexion exercise. Figure 29 shows a spinal extension exercise, in which a pull force is exerted on a strength strap fastened to the anchoring point (47) of the chest stabiliser (4). Figures 30 and 31 show knee flexion and elbow flexion exercises, respectively, in which a force is exerted on strength straps (37) fastened to anchoring points (46) distributed along the different elements that make up the leg press (5). Figure 32 shows a column rotation exercise in which the strength strap is fastened to one of the points of the holes in one of the adjustable racks (7) by means of an eyebolt. Lastly, figure 33 shows a shoulder abduction exercise in which the strength strap is anchored by means of an eyebolt to one of the holes in one of the horizontal adjustable racks (6).

Claims

1. Isometric exercise device, comprising of a frame (1) supported on the ground, equipped with a seat (2) attached to the frame that ends in a support area (11) for the calf muscles, which has transverse straps (10) for securing and stabilising the user's legs and a backrest (3), on which there is a support base equipped with straps (44) for securing and stabilising the user's torso, a backrest that includes means for adjusting both its tilt and longitudinal adjustment, a chest stabiliser (4), taking the form of a telescopic strut (26) tilted backwards, which emerges from the base of the frame (1), on which an arm (30) slides, ending in a padded element (31) for supporting the user's chest for its securing and stabilisation, a leg press (5) and anchoring points for the strength straps (37) distributed in the different structures of the equipment, characterised in that racks (7) are installed laterally to the structure of the backrest (3) with an adjustable tilt, said racks comprising two end crosspieces between which there are a series of bars parallel to each other and parallel to the backrest (3), provided with holes (32) in which poles (8) can be selectively installed, and there are horizontal racks (6) linked to the sides of the seat (2), said racks comprising two end crosspieces between which there are a series of bars parallel to each other and transversal to the seat (2), provided with holes (32) in which a second type of pole (9) and handholds (48) can be selectively coupled, said racks (7) and horizontal racks (6) defining, together with the respective poles (8) and (9), a means of three-dimensional adjustment of the static force application point of the upper limbs.

2. The isometric exercise device according to claim 1, wherein the poles (8) and (9), as well as the handholds (48), take the form of a hollow bar having a circular section, wherein the coupling to the bars of the adjustable racks (7) and (6) is carried out by means of an anchoring part (33) welded to the lower end of each pole (8) and (9) and handhold (48), the anchoring part (33) includes a fixed pin (34) and a pair of holes (43), so that once it is in position, a second non-return pin (35) is inserted through the pair of holes (43), coinciding with the holes (32) of the corresponding adjustable rack, said second non-return pin having a geometry that prevents the through part of said pin from returning.

3. The isometric exercise device according to claim 1, wherein the free end of each of the poles (8), beyond the grip area, is curved internally and ends in an eyebolt (38) for anchoring strength straps (37).

4. The isometric exercise device according to claim 1, wherein the grip area of the poles (8) has a 10° downward tilt with respect to the horizontal and opens outwards by 10° with respect to the longitudinal axis of the seat.

5. The isometric exercise device according to claim 1, wherein the poles (9) define two distinct grip areas, one grip area (41) for chest press exercises and another grip area (42) for rowing exercises, the grip area (41) for chest presses opens outwards by 20° with respect to the longitudinal axis of the seat and opens 10° with respect to the vertical, while the grip area (42) for rowing exercises closes 10° with respect to the longitudinal axis of the seat and opens 10° with respect to the vertical.

6. The isometric exercise device according to claim 1, wherein the support base of the backrest is attached to a metal framework (13) which is linked at the bottom and articulated to an articulated quadrilateral structure on which upper base there is a guide bar (16) along which a slider (17) can be moved, said slider being linked to the framework of the backrest in its middle area by means of a bi-articulated bar (18), the slider having means of selective securing along the guide bar (16), while one of the oblique bars of the articulated quadrilateral extends in a bottom section (20) equipped with selective securing means on a series of holes (23) made in a platen (24) attached to the frame (1).

7. The isometric exercise device according to claim 1, wherein the seat includes internal and external side leg support and force application elements, with positional adjustment means.

8. The isometric exercise device according to claims 1 and 7, wherein the strength straps (37), as well as the grip and force application areas defined in the equipment include means for individualised sensing and monitoring of the forces exerted on them.

9. The isometric exercise device according to claims 1 and 6, wherein the slider (17) is selectively secured along the guide (16) by means of a first lever (19) accessible from the seat itself.

10. The isometric exercise device according to claims 1 and 6, wherein the means for securing the bottom section (20) of one of the oblique bars of the articulated quadrilateral take the form of a second lever (21) that can be actuated against the tension of a spring, accessible from the seat itself, a second lever that includes a pin that can be selectively fitted into one of the holes (23) provided in a plate or platen (24) attached to the frame (1).

11. The isometric exercise device according to claim 1, wherein the leg press (5) takes the form of a platform for supporting the user's feet that is arranged on a tubular structure attached to the frame, a platform raised above the seat (2).

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