Patent Description:
The invention falls within the sector of sporting equipment suitable to stimulate the reaction of the human body to so-called motor interferences, i.e. external stimuli that, during the performance of a movement, can generate a variation of a person's balance.

Usually, training of the muscles of the body involves the performance of free body exercises or exercises with equipment (movable equipment or stationary machines).

During the performance of these exercises, the person or the machine rests on a stable support, such as a floor, a fixed platform or the like.

According to this training method, the person contracts his/her muscles voluntarily to perform a given movement characteristic of the exercise that he/she is performing.

In practice, during the performance of an exercise, any variation of position, acceleration or speed of a part of the body, just as the force exerted by given muscles, is known or in any case predictable by the person performing the exercise.

However, both in the practice of some sporting activities and in normal daily actions, our body is often subjected to external stimuli, predictable or unpredictable, that can interfere with a movement that is being performed or with a condition of stable balance.

For example, during a sporting activity, contact with an opponent or an unexpected change in direction can cause an imbalance that the athlete must compensate as rapidly as possible.

In other cases, these interferences can be generated, especially when running, by incorrect positioning of the foot on the ground, due to a coordination error of the athlete or to an unexpected variation of the ground underfoot.

An event of this kind can also occur during daily activities, such as walking, climbing stairs or in other more precarious conditions of balance.

Examples of motor interferences are also represented, for example, by losing one's grip on and dropping an object and trying to catch it.

In general, the greater the rapidity and unexpectedness of the interference that occurs, the more difficulty the body has in reacting correctly to re-establish the condition of movement, or of unperturbed balance.

In this regard, there are studies that show that this ability of our body to react can be developed and increased with a training method in which motor interferences are suitably imparted to the person during the performance of physical exercises.

<CIT> discloses an exercise device for mastering yoga asanas which practice requires good body flexibility and strength. The device comprises a flexible board, elongate expandable supporting members on which the flexible board is suspended.

<CIT> describes a suspended board connected to a support structure by flexible and inextensible suspension means and by second flexible and extensible suspension means and by elastic cords. The suspension means are connected to the board at central axis so as to allow it to rotate about said axis. This device thus allows the board to take positions of imbalance, determined solely by the position of the body of the person on the board. The movements of the board are therefore at least in part predictable by the person performing an exercise on it.

<CIT> describes as platform for performing gymnastic exercises provided with a supporting surface connected to actuator means adapted to tilt the supporting surface or to vary the height of one or more points, to create unpredictable conditions of imbalance. The degrees of freedom of movement of the platform in question are linked to the type of actuators used and to the mechanism with which it is generally connected to the base. To obtain complex movements it is therefore necessary to adopt complicated and costly movement mechanisms. For this reason, this equipment generally only provides vertical movements of the supporting surface, i.e., translations or rotations.

An objective of the present invention is therefore to provide a device that allows a person to perform a physical exercise perturbed by unexpected and unknown motor interferences.

In particular, an object of the present invention is to produce a device that allows artificial reproduction of unexpected and complex movements to which a person, in particular an athlete, could be subjected during the performance of some sporting disciplines.

The object of the present invention is therefore to provide a device that allows a person to perform a plurality of gymnastic exercises, both free body and with the aid of equipment or machines.

Another object of the present invention is to provide a device controllable in real time by a third person, for example a trainer or an instructor.

A further object of the present invention is to provide a device that is less complicated and less costly than those of the prior art.

The aforesaid objects are achieved with a device for exercising muscles and balance as claimed in claim <NUM>. The additional features are defined by the dependent claims.

According to the invention, said suspension means comprise elongated flexible members with a first end connected to the at least one first actuator and a second opposite connected to the board. The connection or coupling points of the second ends of the suspension means to the board are preferably at the lateral edges or the outer perimeter of this latter. Generally, connection means such as hooks, eyelets, slots, etc. are interposed between the flexible member and the board.

The actuator is controlled by a control unit adapted to generate a sequence of activation and deactivation signals to move the suspension means and, therefore, to vary the height or the tilt of the board, or both.

In the context of the present invention the term suspended, referred to the board, means that it is held by said suspension means mainly or exclusively from above.

For this purpose, the static support structure is configured so as to provide coupling points of the suspension means to the at least one first actuator positioned at a greater height with respect to the board or is provided with guides such as pulleys or the like, arranged in this raised position elevated with respect to the board. In this way, the board is maintained suspended or "hung" by said suspension means.

According to the invention, said suspension means are therefore designed to allow a movement of the board of translational, prevalently along a direction substantially vertical or perpendicular to the ground, or rotational (tilting) type of the board or combinations of these movements. Moreover, the use of flexible members means that the board, besides the aforesaid vertical translation or tilting movements, is subject to lateral oscillations, these latter which can be determined only or also be the movements of the person's body.

The movements of the board are therefore caused by external stresses with a known, or in any case at least partially predictable, component caused by the person's movements, and an unexpected component, caused by the action of the at least one first actuator.

Suitable flexible members are, for example, ropes or cords, belts, chains or the like.

Preferably, the suspension means are substantially inextensible. This ensures that vertical translations or rotations (tilting) of the board are caused only by the movement of the at least one first actuator and not, instead, also by the movements of the person standing on the board. In this way these movements can be controlled and managed precisely by the control unit.

According to another variant of the invention, the suspension means, or a part of these means, can also be extensible or elastic.

The effect of the sequence of activations and deactivations of the at least one first actuator is to cause a sequence of movements of the board that, in turn, generate motor interferences for the person performing the physical exercise or, in any case, a given movement on it.

These motor interferences, not being known to the person performing the exercise, can simulate unexpected events that occur normally during sporting activity or daily activities. By subjecting the person to these unexpected disturbances, during the performance of a physical exercise or of a specific movement, it is possible to stimulate and train both the muscles of the body, and in particular their reaction ability, and the person's balance.

According to an aspect of the invention, the at least one first actuator is preferably selected from linear actuators, electric motors, magnetic actuators or pneumatic actuators.

According to another aspect of the invention, said first end of the suspension means can be connected directly to the at least one first actuator. This configuration is preferable when the at least one fisrt actuator is an actuators with linear motion, such as electric or magnetic linear actuators, or pneumatic cylinders.

According to another possible variant, a movement member, such as a pulley or a reel, can be interposed between said first end of the suspension means and said at least one first actuator. These movement members, which can carry the coupling point of the first end, are rotated by the at least one first actuator, for example an electric motor, to wind or unwind the suspension element. This winding or unwinding thus determines a variation of the length, or of the extension, of the portion of the suspension means between the coupling point on the static support structure and the connection point to the board.

Other movement members that can be used are connecting rods, articulated rods or cams.

According to an aspect of the invention, said suspension means comprise at least three flexible members (ropes, cables, or the like): the first end of each element is connected to at least one first actuator, and the second end is connected to a fixed point at the perimeter of the board.

According to a preferred variant, the board has a polygonal and more preferably quadrilateral shape. According to this variant, the suspension means can comprise four flexible members whose second ends are connected at the vertices of the board.

Said first ends of the suspension means can be connected each to a respective actuator or two or more suspension means can be connected to a shared actuator. In this way, it is possible to reduce the number of the actuators used in the device, however limiting the possible movements of the board.

According to a variant of the invention the static support structure comprises columns arranged along a perimeter around the board. Guides means, such as pulleys, rollers or the like, on which the suspension means run, are mounted on said columns. According to this variant, the at least one first actuator is mounted on said columns or, optionally, in a base of the structure, if provided.

In a particular embodiment, the device can be integrated with a treadmill. In this variant the board is provided with a pair of rollers, rotatingly connected to the board and arranged so that the respective rotation axes are parallel to one another and substantially parallel to the upper surface of the board. A belt is wound around said rollers and arranged so as to have at least an upper branch positioned above said upper surface of the board.

The treadmill can be of passive type, in which the belt is rotated directly by the person walking or running on it, or of active type. In this second case, the device further comprises at least one motor, connected to at least one of said rollers, to rotate the belt. Also said motor is connected to the control unit which manages its activation and deactivation.

According to a variant of the invention, the device can comprise a limit stop adapted to limit or prevent the oscillation movement of the board. In fact, as already mentioned, the flexibility of the suspension means allows the board a further oscillating motion, besides the rotation and vertical translation movements caused by the at least one first actuator. Said oscillating movement is also, or prevalently, caused by the movements of the person on the board. Said limit stop is therefore configured to limit the lateral movements of the board during the oscillating motion or to exclude them.

According to a possible embodiment, said limit stop can comprise limiters positioned on the static support structure. The limiters are adapted to interfere directly with the board or with an abutment element fixed to this latter, preferably solidly.

Said limiters can, for example, be side walls positioned at the lateral edge of the board at a given distance from it. The distance of said side walls is preferably adjustable so as to vary the amplitude of the lateral movements allowed optionally also in a different manner for oscillations in directions transverse to one another.

According to an alternative embodiment, the board is provided with an abutment element, preferably projecting from the upper face, adapted to cooperate with the aforesaid side walls. In this variant, a single side wall with a closed perimeter could also be provided.

Preferably, the side walls are mounted on elastic supports or are themselves made of a deformable material so as to dampen the impact of the board or of the abutment element against them.

According to another possible embodiment, said limit stop can comprise magnetic means, such as permanent magnets or electromagnets, attached to the static support structure, to the board or to both.

According to another possible embodiment, said limit stop can comprise limiters mounted on the static support structure adapted to interact with the flexible members to reduce the length of the portion that can oscillate and, therefore, the oscillation amplitude of the platform.

For example, said limiters can comprise jaws, annular elements or the like, that surround the flexible member. Preferably, said limiters are movable along a substantially vertical direction to vary the point in which the flexible member is constrained. In this way it is possible to vary the length of the portion of flexible member that can oscillate.

According to another variant, the device can also comprise at least one second actuator, connected to the control unit, adapted to cause oscillating movements of the board. Said movements are therefore generated in a manner controlled by the control unit and, just as the translation and rotation movements, are adapted to generate motor interferences that tend to destabilize the person on the board.

According to this variant, said at least one second actuator can also act as limit stop to limit or prevent the oscillating movement.

Examples of said at least one second actuator is, for example, electromagnets mounted as described above, conventional actuators, motors or linear actuators, connected directly to the board or, preferably, by means of flexible members such as cords, ropes or the like.

According to another aspect of the invention, the control unit is configured to calculate both the activation and deactivation times of the at least one first actuator, and therefore the duration of an activation cycle, and the rest or deactivation time between one activation cycle and the next.

Preferably, the rest or deactivation time between one activation cycle and the next is different at least to the previous one, so that the movement of the board is not predictable or expected by the person standing on it.

According to a possible embodiment, the activation and deactivation time intervals are random and are generated in real time by the control unit during use of the device, or are stored in a memory of said control unit.

Alternatively, the activation and deactivation times of said at least one first actuator are imparted by a specific user, such as a trainer, by means of a control interface connected to the control unit.

According to an aspect of the invention, said control unit is configured to vary, adjust or control one or more of the following parameters concerning the movements of the board:.

According to another aspect of the invention, the device is equipped with a sensor, operatively connected to the control unit, configured to measure at least one parameter concerning the person performing the exercise. Said parameter is selected from the person's energy expenditure or heart rate or is linked to the position, speed or acceleration of one or more parts of the body of the person performing the exercise on the board.

Further features and details of the invention will be better understood from the description below, provided by way of non-limiting example, and from the accompanying drawings, wherein:.

With reference to the accompanying figures, <FIG> indicates as a whole with the reference numeral <NUM> the device for developing muscles and balance. The device <NUM> comprises a static support structure <NUM> and a board <NUM>, which offers a support surface <NUM> adapted to accommodate at least one person. As a function of the dimensions and of the shape of the board <NUM>, the person can perform physical exercises on it in different positions, for example while standing, lying down or in other positions. Preferably, the board can also accommodate fixed or movable sporting equipment, that can be used by the person to perform physical exercises.

The static support structure <NUM> comprises a base <NUM>, adapted to rest on the ground, and columns <NUM> that extend upward and surround the board <NUM>. In the example of the figures, the base <NUM> has a quadrilateral shape and the columns <NUM>, four in this case, are positioned at the vertices of the base <NUM>. However, the number of columns <NUM> be larger or smaller as a function of requirements.

According to another variant, not illustrated, said static support structure <NUM> can be fixed to the ceiling or to the wall of a room. In this case, the structure can have different shapes from the one described above.

According to a preferred variant, the board <NUM> comprises a substantially rigid table, i.e., not deformable if loaded with the weight of the person or of any equipment. The material with which the table is produced can be a plastic, wooden or metal material. The structure of the table can be solid, i.e., monolithic, or can comprise a covered rigid frame. Said covering can be made of a soft or yielding material, such as an expanded material.

According to another possible variant the board <NUM> can comprise a bag of flattened shape, inflatable with air or with a gas so as to make it sufficiently rigid to support a person.

The board <NUM> has a preferably polygonal, and more preferably quadrilateral, planform, as in the example illustrated. Alternatively, the board can be oval or round.

The support surface <NUM> of the board <NUM> is typically flat or substantially flat.

The board <NUM> is connected to the static support structure <NUM> by means of suspension means <NUM> adapted to maintain the board <NUM> raised off the ground and allow it to perform given movements in space.

In the examples of the accompanying figures, said suspension means <NUM> comprise flexible members <NUM>, such as ropes or cords. Said flexible members are connected at a first end 31a to a respective coupling point <NUM> of the static support structure <NUM> (<FIG> and <FIG>) and at a second end 31b to the board <NUM>.

According to the invention, said coupling point is on or is connected to first actuator <NUM>, also mounted on the support structure <NUM>.

A control unit <NUM> is connected to said first actuator <NUM> and controls its deactivation to move the coupling point <NUM> and consequently the position of the flexible member <NUM> or at least of its second end 31b.

According to a first embodiment of the invention, illustrated in <FIG> and <FIG>, the first actuator <NUM> is mounted on the columns <NUM> of the static support structure <NUM>. More precisely, each column <NUM> is provided with an first actuator <NUM> connected to a respective flexible member <NUM>.

According to this embodiment, each flexible member <NUM> is wound or in any case runs on guide pulleys <NUM> mounted rotatable on the columns <NUM>. At least one of said pulleys <NUM> is positioned in proximity to a distal end of the column <NUM> or in any case at a greater height with respect to that of the board <NUM> in the rest position, i.e., substantially parallel to the ground.

The task of the pulleys <NUM> is to divert and guide the flexible member <NUM> from the distal end of the column <NUM> toward the point in which the first actuator <NUM> is positioned.

According to the invention, alternatively to the pulleys other guides can be used to divert the direction of extension of the flexible member between the coupling point on the board <NUM> and the one on the first actuator <NUM>.

The columns <NUM> have a height that can vary as a function both of the type of exercise to be performed on the board and of the amplitude of movement required. The height is typically comprised between <NUM> and <NUM>.

For example, as in the variant of <FIG>, the columns <NUM> can have a height comprised between <NUM> and <NUM> meters.

Nonetheless, the columns <NUM> can be lower, for example <NUM> - <NUM> meter, as in the variant of <FIG>. In this variant, the space around the board <NUM> is substantially free so as to allow a person to perform exercises in which the parts of the body or any equipment held could project beyond the perimeter along which the columns <NUM> are arranged.

According to the invention, the first actuator <NUM> can be of various type. According to a possible embodiment, not illustrated in the figures, the first actuator <NUM> can comprise an electric motor connected to a reel on which the first end 31a of the flexible member <NUM> is fixed. Rotation of the reel causes winding or unwinding of the flexible member <NUM> and, varying its length, causes movement of the second end 31b of this latter and of the coupling point on the board <NUM>.

Actuation of the first actuator <NUM> by the control unit <NUM> thus allows substantially vertical translation movements to be imparted to the board, when all the flexible member <NUM> are wound or unwound in a coordinated manner, or of the rotations (or tilting) in different directions winding or unwinding only some of the flexible member <NUM> or winding some and unwinding others.

According to another embodiment, the first end 31a of the flexible member <NUM> can be connected to an electric or pneumatic linear actuator, whose movement determines the movement of the board in the manner described above.

Said first actuator can comprise an intermediate transmission member, such as an articulated lever, a cam or the like, on which the first end 31a of the flexible member <NUM> is fixed.

The examples described above are provided purely by way of non-limiting example within the scope of the present invention.

According to another variant of the invention, illustrated in <FIG>, the first actuator <NUM> are positioned in the base <NUM> of the static structure <NUM>.

According to a particular embodiment, the first ends 31a of two flexible members <NUM> are connected to a common single first actuator <NUM>.

In this way the movement caused by said first actuator <NUM> determines the simultaneous movement of the second ends 31b of the two respective flexible members <NUM>.

The flexible members <NUM> connected to the same coupling point <NUM> can be those connected to the opposite vertices of the board, as in the example represented in <FIG>, or, alternatively, they can be those connected to consecutive vertices.

In this variant the device is simplified as the number of actuators is reduced <NUM>.

According to another variant of the invention, the device comprises a limit stop <NUM> adapted to limit the oscillating movement of the board <NUM> or, optionally, to prevent it entirely. Oscillating movement is meant as lateral movements of the board <NUM> due to the fact that this latter is held suspended by the flexible members <NUM>, which allow an oscillating motion in the manner of a pendulum.

<FIG> illustrate some examples of embodiment of said limit stop <NUM>.

In the example of <FIG>, the device comprises side walls <NUM>, arranged at the perimeter of the static support structure <NUM> at a given distance from the lateral edge <NUM> of the board <NUM> in a rest condition.

Preferably, said side walls are mounted on adjustable supports so as to vary the range of the lateral movements of the board <NUM>. Even more preferably, said side walls are mounted on elastic supports <NUM> so as to dampen any impacts of the board <NUM>. Moreover, alternatively, for the same purpose, said side walls <NUM> can be made of soft or deformable materials, such as rubber, expanded materials or the like.

In the variant of <FIG>, the side walls <NUM> are positioned below the board <NUM> and are adapted to co-act with an abutment element <NUM> projecting from its lower face <NUM>. In this variant said abutment element can be made of rigid material or also of a soft or pliable material, as a function of the how the side walls <NUM> are made.

In the example of <FIG>, the side walls <NUM> consist of a closed edge element, for example annular in shape, inside the perimeter of which the abutment element <NUM> projecting from the lower surface <NUM> of the board <NUM> can move freely. Said edge element <NUM> is preferably made of an elastic material.

According to another variant, the abutment element <NUM> is fixed on the base <NUM> of the static support structure <NUM> and the side walls <NUM>, in the shape of the edge element or of separate side walls, are attached to the lower surface <NUM> of the board.

According to yet another variant, illustrated in <FIG>, the abutment element <NUM> is mounted movably on the base <NUM> of the static support structure <NUM> so as to be able to be raised or lowered by means of an actuator <NUM>. In this way the limit stop element <NUM> can be completely excluded when the abutment element <NUM> is in the lowered position or, vice versa, activated when this latter is raised.

According to a further variant of the invention, illustrated in <FIG>, the limit stop <NUM> comprise a flexible element <NUM>, for example a cable or a cord, fixed to the lower surface <NUM> of the board <NUM>, connected to an actuator <NUM>, preferably a pulley or reel, connected to an electric motor (not illustrated in the figure).

The flexible element is wound on a pulley 55a adapted to maintain the final portion of the flexible element, the one fixed to the board <NUM>, in a substantially vertical position, placing the suspension means in tension in a balanced manner.

Said flexible element <NUM> can be placed under tension to a greater or lesser extent so as to prevent or only limit the lateral movements of the board <NUM>.

In yet another variant, illustrated in <FIG>, the limit stop <NUM> comprise magnetic means. More in detail, said magnetic means comprise at least a pair of magnets <NUM>, one element of which is mounted on the board <NUM> and the other is mounted on the static support structure <NUM>. By suitably arranging said two or more pairs of magnets <NUM>, it is possible to generate a force field that tends to hold the board <NUM> in a neutral or central position with respect to the static support structure <NUM>.

Preferably, at least one of said elements is an electromagnet controlled by the control unit <NUM>. Bu means of the control unit <NUM> it is possible to adjust the intensity of the electromagnet and consequently the force with which it opposes a lateral movement of the board <NUM>.

According to the invention, the device can also comprise at least one second actuator adapted to impart oscillation movements of the board <NUM> in a controlled manner. Said at least one second actuator is in fact connected to the control unit <NUM>, which controls its activation in order to generate further motor interferences that tend to destabilize the person on the board.

According to a possible embodiment, said at least one second actuator, not illustrated in the figures, can comprise conventional actuators such as electric motors, pneumatic motors or the like, which can be connected to the board directly or, preferably, by means of flexible elements such as cords, ropes or the like.

According to this variant, said at least one second actuator can also be used as limit stop to limit or prevent the oscillating movement.

<FIG> illustrates a further variant of the device in which a treadmill is integrated.

In this variant, the board <NUM> is connected to the static support structure <NUM> in the same way described for the variant of <FIG> or <FIG>.

Hinged on the board <NUM> are two rollers <NUM>, <NUM> arranged so that the respective rotation axes are parallel to each other and substantially parallel to the upper surface <NUM> of the board. In practice, the axes of the rollers <NUM>, <NUM> lie in a plane substantially parallel to the upper surface <NUM>.

Wound about said rollers is a belt <NUM> that has at least an upper branch positioned above said upper surface <NUM> of the board so that a person on the board can stand on it. A motor, not illustrated, is connected to at least one of said rollers <NUM>, <NUM> to rotate said belt <NUM> and allow the person to walk or run on the board <NUM>. The motor is connected to the control unit <NUM> and managed by it. For example, by means of the interface <NUM> of the control unit <NUM>, it is possible to program both the speed of rotation of the belt <NUM> and the sequence of motor interferences generated by the rotations (tilting) of the board <NUM> or by its vertical translation.

As already mentioned, the object of the invention is to create motor interferences, generated through the rotations or the movements of the board <NUM>, to stimulate the person during the performance of an exercise, or more in general of a predetermined movement, or in a condition of balance.

Rotations or movements of the board that are too brief or too slow might not be sufficient to generate motor interferences, i.e. suitable to stimulate the reaction of the body.

On the contrary, rotations or movements that are too fast or too broad could be dangerous for some subjects or during the performance of given exercises.

For this reason, the control unit <NUM> is preferably of programmable type. In particular, the control unit is configured to allow setting of given parameters concerning the sequence of motor interferences to be generated.

Typically, these parameters comprise one or more of the following quantities referred to a rotation and/or to a movement of the board <NUM>:.

According to tests carried out by the applicant, values suitable to generate motor interferences, for a rotation, are preferably included in the ranges below:.

In general, the amplitude of these rotations is preferably from <NUM>° to <NUM>°.

For a movement, values suitable to generate motor interferences are preferably included in the following ranges:.

The amplitude of the movement is instead preferably from <NUM> to <NUM>.

These rotations and these movements must be understood with respect to a reference position of the board, for example the undisturbed position. The rotation and movement values indicated above are therefore to be considered absolute values.

These values are however indicative. For some exercises, both for professional training and for rehabilitation, they could undergo variations as a function of the subject performing the exercise or of the result to be obtained.

These parameters can be set individually or in groups of one or more parameters. Preferably, the control unit <NUM> is configured to store some programs with which given values of the aforesaid parameters are associated.

For example, these programs can be indicated for different types of physical exercises or for different levels of difficulty or of intensity of the motor interferences generated.

For this purpose, the control unit is advantageously provided with an interface <NUM> that allows viewing of the aforesaid parameters and/or their modification by a user. Said interface <NUM> comprises, for example, a screen, a keypad or a touchscreen.

Besides the aforesaid parameters, the control unit <NUM> according to the present invention can also allow programming of other parameters, such as the duration of the sequence of activations and deactivations of the at least one first actuator <NUM>, the time interval between them (frequency) and/or the total number of movement cycles of the board (variations of position).

In a preferred variant, the control unit <NUM> is configured to program the sequence of motor interferences in conformity with a signal detected by a sensor <NUM>, represented schematically in <FIG>.

Said sensor <NUM> can comprise, for example, one or more sensors capable of detecting one or more parameters that refer to the person performing the exercise and/or to the equipment used.

This allows the control unit <NUM> to receive said values measured and to modulate, also in real time, the intensity, the duration or the frequency of the motor interferences, as a function of the performance of the person performing the exercise.

Preferably said sensor <NUM> can measure quantities, such as the position, the speed or the acceleration of at least a part of the body of the person performing the exercise and/or of a part of the equipment used.

For example, said sensor <NUM> can detect the position of a dumbbell or a barbell held by the person, or the speed or the acceleration with which it is moved. Said sensor can also detect the position, the speed or the acceleration of a movable part of a weight lifting machine or the speed of the belt of a treadmill positioned on the board <NUM>. Said sensor can also detect the position of the body of the person with respect to the supporting surface of the board <NUM>.

According to another variant, said sensors <NUM> can instead be configured to detect the energy expenditure of the persona performing the exercise.

According to another aspect of the invention, the movable platform can comprise control means (not illustrated in the figure) connected to the control unit <NUM> and usable by a third person. Said third person can, for example, be a trainer in charge of monitoring the activity carried out by the person or by the people on the board <NUM>.

According to the present invention, said control means are configured to control one or more parameters of the sequence of motor interferences. In this case, some parameters of the sequence (for example the amplitude, the speed and the acceleration) can be preset in the control unit <NUM>, while other parameters (the sense or the direction of the movements, their frequency and duration) can be imparted in real time by said third person with the control means.

Said control means can, for example, comprise one or more accelerometers applicable to the body of the third person. The movement of a part of the body, for example of a limb, can be interpreted by the control unit <NUM> as a command to impart to the board <NUM>, a rotation about a given axis or a movement.

Alternatively, or additionally, the control means can comprise a video camera adapted to film said third person. A recognition system, integrated in the control unit <NUM>, is capable of detecting a given movement of the body of the third person and of generating a corresponding command for movement and/or rotation of the board <NUM>.

Claim 1:
A device (<NUM>) for exercising muscles and balance comprising:
- a board (<NUM>) with a support surface (<NUM>) to accommodate at least one person performing a physical exercise;
- a static support structure (<NUM>);
- suspension means (<NUM>) between the static structure (<NUM>) and the board (<NUM>), the suspension means being configured to maintain the board suspended and raised off the ground;
- at least one first actuator (<NUM>) of said suspension means (<NUM>) mounted on the static structure (<NUM>);
wherein said suspension means (<NUM>) comprises flexible and elongated members (<NUM>) each having a first end (31a) connected to said at least one first actuator (<NUM>) and a second opposite end (31b) connected to the board (<NUM>), said at least one actuator (<NUM>) being controllable by a control unit (<NUM>) adapted to generate a sequence of activation and deactivation signals to move the suspension means (<NUM>) and, therefore, to vary a height or an inclination of the board (<NUM>), or both; said at least one actuator (<NUM>) causing a sequence of movements of said board (<NUM>) during the performance of the exercise, said suspension means (<NUM>) being substantially inextensible and the board (<NUM>) comprising a substantially rigid table.