EXERCISING SUPPORT
The present invention relates to an exercising support. More specifically, it relates to a yoga support.
This invention relates to a support apparatus for supporting and stretching a person's legs when kneeling, particularly but not exclusively for alleviating the symptoms of Restless Leg Syndrome (RLS) or for supporting and stimulating a user's legs when performing a stretching exercise.
Such apparatus and techniques are known. However, they are made and used on an improvised basis. Towels can be placed in the knee pits to afford spacing and below the ankles to provide elevation. Other objects can be used to support the buttocks upon sitting down. However, such apparatus and techniques are not specifically designed to provide comfort, adequate support or effective blood flow increase.
US2013/0324382 discloses an exercise mat comprising a plurality of detachable hand-held implements and permanently fixed or detachable cushions for tail-bone support; lumbar support; neck support and the like.
According to the first aspect of the present invention, an exercising support comprises: a mat having a lower surface arranged to engage a floor in use and an upper surface arranged to support a user, the upper surface including a plurality of upwardly extending projections;
a kneecap rest having a lower surface which is adapted to engage the upper surface; a foot or lower leg rest having a lower surface adapted to contact the upper surface; wherein lower surfaces of the foot or lower leg rest and kneecap rest each have a securing arrangement for detachable engagement to one or more of the upwardly extending projections; and
a thigh support configured to engage the back of a user's upper and lower legs; wherein the thigh support, foot or lower leg rest and kneecap rest, are maintained in a configuration, relative to one and other when in use on the mat, to cumulatively provide pressure to one or more of a user's upper and lower leg portions.
The exercising support may be particularly, but not exclusively, beneficial in relieving the symptoms of Restless Legs Syndrome by increasing blood flow through the user's legs, particularly when a user is in the Balasana yoga posture. This is a posture in which knees and hips are bent with the shins resting on the floor. Furthermore, the exercising support may be beneficial in relieving the symptoms of other disorders by increasing blood flow through a user's legs.
Without wishing to be bound by theory, it is believed that the exercising support may increase blood flow within a user's legs by providing cumulative pressure to tendons and/or muscular groups within the lower and upper leg regions through combined use of a support surface, thigh support, foot and lower leg rest and kneecap rest. The exercising support may increase blood flow in a user's legs by stimulating pressure points located within selected muscular groups.
Increased blood flow through stimulation of muscular groups found within a person's upper and lower legs is maintained over prolonged periods by restricting unwanted movement of the thigh support, foot or lower leg rest and/or kneecap rest. In particular, the securing arrangement of the foot or lower leg rest and/or kneecap rest when engaged with one or more of the upwardly extending projections prevents forward and backward motion of the foot or lower leg rest and/or kneecap rest.
The support may also be used to generally stretch a user's legs while kneeling, for example to permit a user to develop an ability to sit in a kneeling posture.
Preferably, the upper surface of the mat comprises an upper support surface having a longitudinal axis and defined by a front edge, a rear edge and two side edges.
The support surface may be rectangular, ovoid or elliptical.
The mat may be bounded by the front, rear and side edges. Alternatively, the mat may extend beyond these edges. For example, the mat may include two support surfaces arranged side by side or with the front edges facing so that two users may exercise simultaneously.
The upwardly extending projections may comprise a plurality of parallel ridges extending transversely of the support surface, preferably between the side edges. An array of parallel ridges may be provided. The mat may further comprise parallel slots or grooves between adjacent ridges, the slots or grooves having a sufficient depth to receive and engage corresponding downwardly extending projections of the kneecap rest or lower leg/foot rest as described below.
The array of projections may cover the entire support surface. More preferably, the projections may cover a forward portion of the support surface, with a rearward portion having no projections. Such an arrangement may be more comfortable for a user's feet.
The projections are preferably formed from a rigid or resilient material having sufficient stiffness to provide a movement resisting force to a downwardly extending projection received in a slot or groove in use.
In preferred embodiments, the mat may further comprise an upwardly extending member located transversely at or adjacent the rear edge of the mat, the member having a height greater than the height of the projections. The member may be configured to engage and exert pressure on an upper or lower surface of a user's toes in use. The member may have a typical height of about 1.5 cms to about 3 cms, although any convenient height may be employed. The member may be located at the rear edge of the support surface in spaced relation to the array of projections to define a smooth intermediate surface to serve as a foot rest. This may be beneficial when a user has sensitive feet.
The upwardly extending elongate member may be semi-cylindrical in shape to maximise the comfort of the user. The upwardly extending elongate member may be integral with the mat and may form a continuous surface. Such a configuration will simplify manufacturing of the mat and thereby reduce material costs.
The upwardly extending projections may comprise a plurality of parallel ridges extending transversely across the upper support surface. Preferably the parallel ridges are located in an array extending across the upper support surface. Alternatively, the parallel ridges may be situated at a front end of the support surface, and may be arranged so that
the parallel ridges are visible in front of a user's knees in use. The parallel ridges may be situated at or adjacent the rear of the support surface and located to afford stimulation to a user's calves. The parallel ridges may serve an additional function to provide upwardly extending projections to engage and stimulate pressure points in a user's legs and may accordingly, in cooperation with the thigh support, foot or lower leg rest and/or kneecap rest, increase blood circulation within a user's legs.
The ridges may have a typical height of about 1.0 cms to about 2 cms, preferably about 1.0 cms to about 5 cms.
The slots or grooves may have a width in a direction longitudinal of the mat, which is greater at the base than at the upper opening, so that a bulbous or correspondingly shaped projection of a rest may be positively engaged. This allows the apparatus to provide a movement restraining force to prevent lifting and separating of the rest from the mat in use.
In a preferred embodiment the parallel ridges form continuous ridges across the width of the upper support surface.
Alternatively, the parallel ridges may comprise broken or intermittent ridges extending across the width of the upper support surface between the sides of the mat Such a configuration may reduce material cost and may also provide alternate ways of securing the kneeling support.
The array of parallel ridges may define an array of parallel grooves. The bases of the grooves are preferably but not necessarily at the same height relative to the flat part of the upper support surface. Alternatively, the base of the grooves may be located in a plane beneath the flat part of the upper support surface.
The array of parallel grooves may extend transversely across the upper surface. Preferably the array of parallel grooves are situated across the entire upper surface. Alternatively, the array of parallel grooves may be situated at the front of the upper support surface, and may be arranged so when in use the parallel grooves are visible in
front of the user. The parallel grooves may also be situated rearwardly of the upper support surface.
The parallel grooves and parallel ridges cooperatively prevent forward and backward motion of the kneecap rest through engagement with the securing arrangement of the kneecap rest.
The parallel grooves and parallel ridges cooperatively prevent forward and backward motion of the foot or lower leg rest through engagement with the securing arrangement of the foot or lower leg rest.
The plurality of parallel ridges and the upper support surface may form a continuous layer. Such a configuration accords simplicity of manufacture of the mat and thereby may reduce cost.
The upper surface of the mat may have an upwardly extending elongate member extending transversely across the support and arranged to engage on upper or lower surface of a user's toes.
The lower surface of the mat may be formed from a high friction or non-slip material which will restrict lateral movement during use and thereby reduce the risk of injury to a user.
The high friction or non-slip material may be an elastomeric polymer. Such a material may have sufficient flexibility and elasticity to aid the comfort of the user, whilst having a sufficiently high friction to avoid lateral movement.
The lower leg/foot rest may comprise a resilient padded or elastomeric body extending upwardly from a downwardly facing base, the base being arranged to engage the support surface in use. The downwardly facing surface may be flat or concave and may include a transversely extending socket arranged to receive the kneecap rest.
The body of the foot rest may have an upwardly facing convex surface and a generally constant cross-section transversely of the mat. The height of the upwardly
facing surface may decrease from the front towards the rear to provide a forward apex which can support a user's ankles in use with the user's feet extending downwardly from the rear of the apex.
The base of the foot or lower leg rest may include one or more downwardly extending projections, which are configured to engage between one or more of the upwardly extending projections of the support surface.
The foot rest may have a vertical dimension which increases from the rear towards the front. The vertical dimension may be adjustable.
In a preferred embodiment the foot rest comprises a plurality of overlying and interlocking layers, where one or more of the layers can be removed to decrease the height of the foot or lower leg rest. The apex of the foot or lower leg rest may be arranged to engage a tendon at the front of the ankle in order to aid in stretching of related muscles and to provide increased blood flow. In addition, the apex of the foot or lower leg rest may be configured to extend towards one or more pressure points at the front of the ankle in order to further increase blood flow.
The lower interlocking layer may be the kneecap rest. Such a configuration will reduce the amount of material needed to manufacture the kneeling support and thereby reduce material cost.
One or more of the interlocking layers may include the one or more downwardly extending projections. Such an arrangement prevents forward and backward motion of the interlocking layers relative to one and other, and relative to the upper surface of the mat.
The foot or lower leg rest may be formed from a high friction or non-slip material which restricts lateral movement during use and thereby reduces the risk of injury to a user.
In a preferred embodiment the foot or lower leg rest is positioned on the support surface of the mat so that the apex of the foot or lower leg rest is facing the front of the
mat. The apex of the foot or lower leg rest supports a user's ankles in use whilst the user's feet are supported by the inclined surface of the foot or lower leg rest.
In an alternative embodiment the foot or lower leg rest is positioned on the support surface of the mat so that the apex of the foot or lower leg rest is facing the rear of the mat. The apex of the foot or lower leg rest supports a user's ankles in use whilst the user's shins are supported by the inclined surface of the foot or lower leg rest. The orientation of the rest may be selected to suit a user's preference and degree of flexibility.
The kneecap rest may comprise a generally cylindrical body extending upwardly from a downwardly facing base and located transversely of the support in use; one or more transversely extending downward projections being configured to be received in a slot or groove in the base. In a preferred embodiment, the kneecap rest comprises a partially cylindrical body and a single downwardly extending flange extending the full or partial width of the body. The downwardly extending flange being configured to engage between one or more of the upwardly extending projections of the mat.
The knee cap rest may be composed of relatively inflexible resilient material in comparison to the lower leg/foot rest so that it provides a stiffening member when engaged within the base of the lower let/foot rest.
In a preferred embodiment the kneecap rest extends transversely across the entire width of the upper support surface in order to maximise stability. Alternatively, the kneecap rest may extend transversely across a partial width of the upper support surface.
The securing arrangement of the kneecap rest may comprise one or more downwardly extending projections, which are configured to engage between one or more of the upwardly extending projections of the support surface.
The kneecap rest may comprise a plurality of interlocking overlying layers, where at least one of the layers can be removed to decrease the height of the kneecap rest. The height of the apex of the kneecap rest may be selected to engage a user's tendons at the front of the kneecap. In addition, the apex of the knee cap rest may be configured to engage one or more pressure points at the front of the kneecap.
One or more of the interlocking layers may include the one or more downwardly extending projections. Such an arrangement serves to prevent forward and backward motion of the interlocking layers relative to one and other and relative to the upper surface of the mat.
The kneecap rest may extend transversely beyond the sides of the lower leg/foot rest to provide handles to facilitate detachment and relocation of the latter in use.
The kneecap rest may be formed from a high friction or non-slip material which will restrict lateral movement during use and thereby reduce the risk of injury to a user.
The thigh support may comprise a generally wedge-shaped member having a generally constant transverse cross-sectional profile with a height extending from a forwardly tapered end towards a maximum at an apex located at the rear of the support.
The thigh support may be configured and dimensioned to be comfortably received behind the knees and between the thighs and calves of a kneeling user. A plurality of differently sized supports may be provided.
Wedge-shaped cushions are known to increase the comfort of a kneeling user. However, the function of a thigh support in an embodiment of the present invention may not be achieved by a simple wedge-shaped cushion.
The thigh support may be sufficiently rigid so that it does not deform as a user's weight is adjusted from the front to rear or from side to side during use. In this way a user may selectively adjust pressure applied to the upwardly facing projections by the knees, lower legs, ankles, feet or toes by adjusting the location of the thigh support and the pressure applied to regions of the upper surface by the weight of the user's thighs.
The thigh support may comprise areas of different flexibility and rigidity. In this way the thigh support may be configured to adjust pressure applied behind the knees and between the thighs and calves of a kneeling user. Such a configuration may selectively adjust pressure applied to the upwardly facing projections by the knees, lower legs, ankles,
feet or toes by adjusting the location of the thigh support and the pressure applied to regions of the upper surface by the weight of the user's thighs.
The upper and lower surface of the thigh support may be adapted to detachably engage with one or more interlocking layers. Addition or removal of interlocking layers may increase or decrease the incline of a user's upper legs, respectively and may also permit adjustment of the stiffness of the thigh support. Increasing the incline of a user's upper legs may provide increased pressure to a user's kneecaps and adjacent areas of the lower legs. Decreasing the incline of a user's upper legs may provide increased pressure to a user's ankles and adjacent areas of the lower legs.
The upper and lower surfaces of the thigh support may include rounded or elongate outwardly extending projections. These projections may serve to apply pressure selectively to pressure points in the user's thighs or calves. The projections, composed of relatively rigid material, may have a length from about 0.5 cms to about 1.5 cms, as may be convenient. Differently configured or dimensioned projections may be provided at the front and rear of the support respectively.
The upper surfaces of the lower leg/foot rest support or knee support may also be provided with upwardly extending projections to increase stimulation provided to a user.
In such an embodiment, the thigh support in combination with the array of upward projections provided upon the lower leg/foot support and knee support when separately used in conjunction with the upwardly extending member at the rear edge allow a user to apply pressure using a desired degree of force selectively to individual regions of his or her lower limbs. Further, the pressure may be alternated between selected regions by applying a rocking or periodic motion to the support.
In a preferred embodiment the thigh support is wedge-shaped in cross-section. This permits a relatively narrow part to be located in use behind the user's knees with a thicker part located inwardly towards the feet and buttocks. The user being able to alter the positioning of the thigh support to target acupressure points and to provide optimum comfort or relief.
The upper surface of the mat may be provided with a visual display, for example a marking, to give a user a visual indication of where to engage the downwardly extending elongate member of the thigh support and the securing arrangement of foot or lower leg rest and/or kneecap rest to one or more of the upwardly extending projections based upon the length of a user's legs. In particular, the markings allow a user to selectively place the thigh support, foot or lower leg rest and/or kneecap rest, to provide pressure at specific pressure points located within the user's upper and lower leg portions based upon the length of the user's legs.
The thigh support may further comprise one or more handles to facilitate positioning. The hand grips may comprise rebates in the support dimensioned to accommodate a user's fingers. Preferably handgrips on handles are formed from the same material as the thigh support. The handles may be composed of a molded polymeric material.
The thigh support may further comprise one or more detachable thermal gel packs attached to the outer surface of the thigh support. The one or more detachable gel packs may be attached to the outer surface of the thigh support through the use of hook and loop fasteners. Alternatively, the detachable gel packs may be retained in pockets attached to a cover layer which covers the thigh support. The thermal gel packs may be cooled or heated and then attached to the thigh support. Use of heated gel packs will increase blood flow around the thigh and calf region.
The thigh support may include a vibratory mechanism and a power supply to afford vibratory stimulation during use.
The kneeling support apparatus may further include a hand held device designed to stimulate circulation and/or pressure points on the bottom of the foot and the front of the thigh.
In an alternative embodiment the kneeling support apparatus may also include a forehead rest which is configured to target pressure points on the temples of the side of the head.
The invention is further described by means of example, but not in any limitative sense, with reference to the accompanying drawings, of which:
Figure 1 is a perspective view of a mat in accordance with this invention;
Figure 2 is a perspective view of a thigh support in accordance with this invention;
Figure 3 is a perspective view of a kneecap rest in accordance with this invention;
Figure 4 is a cross-sectional view of the kneecap rest of Figure 3 engaged with the mat of Figure 1 ;
Figure 5 is a perspective and cross sectional view of a foot rest/lower leg rest;
Figure 6 is a cross-sectional view of the foot or lower leg rest of Figure 5 engaged with the mat of Figure 1;
Figure 7 is a perspective view of the kneecap rest of Figure 3 and foot or lower leg rest of Figure 5 engaged with the mat of Figure 1 ;
Figure 8 is a cross-sectional view of the devices of Figures 1 to 7 being used by a user in conjunction with each other;
Figure 9 is a perspective view and cross-sectional of an alternative embodiment of the foot or lower leg rest incorporating the kneecap rest; and
Figure 10 is a cross-sectional view of the mat and thigh support of Figures 1 to 8, along with the foot or lower leg rest and kneecap rest of Figure 9 being used by a user in conjunction with each other.
Figure 11 is a cross-section view of the mat and thigh support of Figures 1 to 8, along with the kneecap rest of Figure 9 being used by a user in conjunction with each other.
Figure 1 shows a mat (1) having a rectangular configuration. The mat (1) comprises: a support surface consisting of front (2) and rear (3) edges situated across the width of the mat (1), and two side portions (4) situated along the length of the mat (1). The mat (1) further comprises an upper surface (5) and lower surface (6), which are adhered to each other. An upwardly extending elongate member (7), semi-cylindrical in shape, is located transversely at the rear edge (3) of the mat (1). The upwardly extending elongate member (7) is integral with the mat (1) and forms a continuous surface.
In an alternative embodiment (not shown) the mat extends beyond the support surface
The upper surface (5) further comprises an array of parallel ridges (8) extending transversely across the surface of the mat (1), in between the two side portions (4) The array of parallel ridges (8) define an array of parallel grooves (9) which extend transversely across the support surface of the mat (1), in between the two side portions (4). Each of the parallel ridges (8) is semi-cylindrical in shape. The height of the parallel ridges (8) is less than the height of the upwardly extending elongate member (7).
Figure 2 shows a thigh support (10) as a resiliently deformable wedge-shaped member having a width at least equal to the combined width of a user's thighs. The thigh support (10) has a tapered end (11), apex (12), incline (13), two side portions (14) and a lower surface (15). The thigh support (10) has a generally constant transverse cross- sectional profile with a height extending from a forwardly extending apex (12) towards a maximum at the rear of the support. The height of the thigh support (10) is dimensioned to allow for a sufficient gap between the user's thighs buttocks and calves/ankles (as seen in Figures 8 and 10).
In use, the thigh support (10) is configured and dimensioned to be comfortably received behind the knees and between the thighs and calves of a kneeling user. In particular, the tapered end (11) is adjacent to the user's knee pit; the apex (12) and the incline (13) are located adjacent to the user's thighs and buttocks; and the lower surface (15) is aligned adjacent to the user's calves.
Figure 3 shows a kneecap rest (16) comprising a generally semi-cylindrical body extending upwardly from a downwardly facing concaved lower surface (18) and a downwardly extending projection (20).
The kneecap rest (16) comprises an upper surface (17), concave lower surface (18) and two side portions (19). The upper surface (17) and concave lower surface (18) form a downwardly extending projection (20) which extend across the length of the kneecap rest (16). The downwardly extending projection (20) is concaved in configuration.
Figure 4 shows the kneecap rest (16) in use with the mat (1). The kneecap rest (16) is located transversely across the support surface of the mat (1) in use. The kneecap rest (16) is maintained in position with the aid of the parallel ridges (8). The concave lower surface (18) of the kneecap rest (16) abuts one of the parallel ridges (8). In turn, the downwardly extending projection (20) of the kneecap rest (1 ) is configured to be received within an adjacent parallel groove (9). The resulting friction fit eliminates forward momentum of the kneecap rest (16). The ridges (8) and grooves (9) have a concave configuration that complements the concaved configuration of the concaved lower surface (18) and the downwardly extending projection (20). The grooves (9) have a width in a direction longitudinal of the mat, which is greater at the base than at the upper opening, so that the downwardly extending projection (20) is positively engaged within the groove (9).
Figure 5 shows a foot or lower leg rest (21) having a wedge shaped cross-section and a width at least equal to the combined width of a user's feet. The foot or lower leg rest (21) comprises a resilient padded body extending upwardly from a downwardly facing lower surface (32). The lower surface includes a socket (33) arranged to receive the kneecap rest (16). The lower surface is adapted to engage the upper surface (5) of the mat (1). The body of the foot or lower leg rest (21) has an upwardly facing convex upper surface (35) and a generally constant cross-section transversely of the mat (1).
The foot or lower leg rest (21) comprises three interlocking structures.
The first structure (22) is predominately semi-cylindrical in shape and has a similar configuration as the kneecap rest (16) seen in Figures 3 and 4. Accordingly, the
first structure (22) comprises an upper surface (23), concaved lower surface (24) and two side portions (25). The upper surface (23) and concaved lower surface (24) form a downwardly extending projection (26) which extend across the length of the first structure (22). The downwardly extending projection (26) is concaved in configuration.
The second structure (27) is wedge shaped and comprises a tapered rear section (28), an apex (29), an inclined upper surface (30), two side portions (31) and a lower surface (32). The lower surface (32) is disposed to abut the upper surface (5) of the mat (1). Part of the lower surface (32) - located beneath the apex (29) - is concaved to form a semi-cylindrical socket (33). The semi-cylindrical cavity (33) has a shape that complements the semi-cylindrical shape of the first structure (22). Forward/backward and lateral motion of the second structure (27) is eliminated upon engagement with the first structure (22).
The third structure (34) has a flattened wedge configuration and comprises an upper surface (35), lower surface (36), tapered rear section (37), an apex (38), inclined upper surface (39), two side portions (40) and a lower surface (41). The lower surface (36) is disposed to engage with the inclined upper surface (30) and apex (29) of the second structure (27). Friction fit engagement between the second structure (27) and third structure (34) prevents movement of the third structure (34).
Figure 6 shows the foot or lower leg rest (21) in use with the mat (1). The base of the foot or lower leg rest (21) includes a downwardly extending projection (26) which is configured to engage between two parallel ridges (8).
The foot or lower leg rest (21) is maintained in position with the aid of the parallel ridges (8). The concaved lower surface (24) of the first structure (22) abuts one of the parallel ridges (8). In turn, the downwardly extending projection (26) of the first structure (22) is located in an adjacent parallel groove (9). The resulting friction fit eliminates forward/backward momentum of the foot or lower leg rest (21). The parallel ridges (8) and grooves (9) have a concave configuration that complements the concaved configuration of the concaved lower surface (24) and the downwardly extending projection (26).
Figure 7 shows the mat (1), kneecap rest (16) and foot or lower leg rest (21) used in place on the mat (1). The foot or lower leg rest (21) is positioned on the upper surface (5) of the mat (1), with the apex end of the foot or lower leg rest distal to the upwardly extending elongate member (7). The foot or lower leg rest (21) is engaged with the parallel ridges (8) and parallel grooves (9) as described in Figure 6. The kneecap rest (16) is positioned on the upper support surface (5) of the mat (1) distal to the foot or lower leg rest (21). The kneecap rest (16) is engaged with the parallel ridges (8) and parallel grooves (9) as described in Figure 4. The parallel grooves have sufficient depth to receive and engage the downwardly extending projections (20 and 26) of the kneecap rest (16) and the foot or lower leg rest (21). The downwardly extending projections (20 and 26) are formed of resilient material having sufficient depth to provide a movement resisting force to the downwardly extending projections (20 and 26) received in parallel groove (9) in use.
Figure 8 shows the mat (1), thigh support (10), kneecap rest (16) and foot or lower leg rest (21) in use with a user. The user's kneecaps are in contact with the upper surface (17) of the kneecap rest (16). In addition, the user's foot is in contact with the upper surface of the foot or lower leg rest (21). In particular, the user's foot is in contact with upper surface (35) of the third structure (34). The thigh support (10) is engaged with the user as described in Figure 2. In particular, the height of the convex upper surface (35) of the foot or lower leg rest (21) increases from the front towards the rear to provide a rearmost apex which supports a user's ankles in use with the user's feet extending downwardly from the rear of the apex. The apex of the foot or lower leg rest (21) is forwardly facing the rear (3) of the mat (1). The user's shins are supported by the inclined surface of the foot or lower leg rest (21).
In an alternative embodiment the foot or lower leg rest (21) is positioned on the support surface of the mat (1) as seen in Figure 7. The apex of the foot or lower leg rest (21) is forwardly facing the front (2) of the mat (1). The apex of the foot or lower leg rest (21) supports a user's ankles in use whilst the user's feet are supported by the inclined surface of the foot or lower leg rest (21).
Figure 9 shows an alternative embodiment of a foot or lower leg rest (42). The foot or lower leg rest (42) comprises two interlocking structures. The foot or lower leg rest (42) comprises a resilient padded body extending upwardly from a downwardly facing
lower surface (48). The lower surface includes a socket (49) arranged to receive the kneecap rest (16). The lower surface is adapted to engage the upper surface (5) of the mat (1). The body of the foot or lower leg rest (42) has an upwardly facing convex upper surface (46) and a generally constant cross-section transversely of the mat (1).
The first structure is the kneecap rest (16) as described in Figure 3.
The second structure (43) is wedge shaped and comprises a tapered rear section (44), an apex (45), inclined upper surface (46), two side portions (47) and a lower surface (48). The lower surface (48) is disposed to abut the upper surface (5) of the mat (1). Part of the lower surface (48) - located beneath the apex (45) - is concaved to form a semi- cylindrical socket (49). The semi-cylindrical cavity (49) has a shape that complements the semi-cylindrical shape of the kneecap rest (16). Forward/backward and lateral motion of the second structure (43) is eliminated upon engagement with the kneecap rest (16). The lateral cross-section of the kneecap rest is longer than the lateral cross-section of the second structure (43).
Figure 10 shows the mat (1), thigh support (10) and foot or lower leg rest (42) in use by a user. The user's kneecaps are in contact with the upper surface (5) of the mat (1). In addition, the user's foot is in contact with the upper surface of the foot or lower leg rest (42). In particular, the user's foot is in contact with the upper surface (46) of the second structure (43). The thigh support (15) is engaged with the user as described in Figure 2. In particular, the height of the convex upper surface (45) of the foot or lower leg rest (42) increases from the front towards the rear to provide a rearmost apex which supports a user's ankles in use with the user's feet extending downwardly from the rear of the apex. The apex of the foot or lower leg rest (42) is forwardly facing the rear (3) of the mat (1). The user's shins are supported by the inclined surface of the foot or lower leg rest (42).
In an alternative embodiment the foot or lower leg rest (42) is located on the support surface of the mat (1) in a similar position to the foot or lower leg rest (21) of Figure 7. Accordingly, the apex of the foot or lower leg rest (42) is forwardly facing the front (2) of the mat (1). The apex of the foot or lower leg rest (42) supports a user's ankles in use whilst the user's feet are supported by the inclined surface of the foot or lower leg rest (42).
Figure 11 shows the mat (1), thigh support (10) and kneecap rest (16) of the foot or lower leg rest (42) in use with a user. The user's kneecaps are in contact with the upper surface (17) of the kneecap rest (16). In addition, the user's foot is in contact with the upper surface (5) of the mat (1). The thigh support (10) is engaged with the user as described in Figure 2.
Various modifications will be apparent to those skilled in the art. For example, the thigh support (15) may be detachably engaged with the upper surface (5) of the mat (1). An elongate member may be used to attach the thigh support (1 ) to the mat (1). For example, one end of the elongate member may be attached to the thigh support (15) whilst the other end of the elongate member may be configured to detachably engage with the upper surface (5) of the mat (1). The detachable end of the elongate member may be in the form of a prong which is adapted to engage a parallel ridge (8). Engagement of the prong with a parallel ridge (8) allows the thigh support (15) to be supported and maintained above the upper surface (5) of the mat (1). This allows a user to position the thigh support (15) on the mat (1) before use. It will be appreciated that such an arrangement may be used in combination with any of the embodiments described in Figures 1 to 11.