JP5068384B1 - Swimsuit - Google Patents

Abstract

Provided is a swimsuit that can swim quickly and can be easily attached and detached without greatly hindering the movement of the body.
The swimsuit of the present invention is a swimsuit 1 in which a front member 2 extending from the abdomen to the front side of the thigh and a rear member 3 extending from the buttocks to the rear side of the thigh are joined. And the rear side member 3 has larger elongation stress at the time of 50% elongation and / or 30% elongation than the front side member 2. In addition, the rear member 3 preferably has an elongation stress in the height direction of the wearer larger than that in the lateral direction of the wearer at the time of 50% elongation and / or 30% elongation.
[Selection] Figure 1

Description

  The present invention relates to a swimsuit.

  Conventionally, as a swimsuit for swimming, a swimsuit is known in which members having different expansion and contraction rates are used depending on the body part of the wearer. For example, Patent Document 1 discloses a swimsuit in which a member having a high degree of elasticity extends from the wearer's back to the back of both legs, and surrounds both thighs and both ankle upper portions in the circumferential direction. Patent Document 2 discloses a swimsuit in which a member having a high elongation rate is disposed below the front side of the wearer, and a member having a low elongation rate is disposed above and on the back side of the wearer's front side. These swimsuits aim to maintain a suitable posture during swimming by placing a member with a high degree of elasticity or a high elongation rate in the desired part, and as a result, lowering the resistance to water, It is possible to swim fast.

JP 2007-314931 A Special table 2008-280656 gazette

  In conventional swimsuits for swimming, the projected area from the top of the body (over the head) is reduced and the posture is stabilized by tightening the wearer's body mainly in the lateral direction (circumferential direction of the torso and legs). It aims to make it possible to swim fast. However, when trying to enhance the conventional function as such a swimsuit for swimming, the swimsuit becomes too much pressure on the wearer, and there arises a problem that the movement of the body is hindered and the attachment and detachment becomes difficult.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a swimsuit that can swim quickly and can be easily attached and detached without greatly hindering the movement of the body.

  In the swimsuit of the present invention that has solved the above problems, a front member that extends from the abdomen to the front side of the thigh and a rear member that extends from the buttocks to the rear side of the thigh are joined. The rear member is characterized in that the elongation stress at the time of 50% elongation of the rear member is larger than that of the front member. The swimsuit of the present invention is a swimsuit in which a front member extending from the abdomen to the front side of the thigh and a rear member extending from the buttocks to the rear side of the thigh are joined. It is characterized in that the side member has a larger elongation stress at the time of 30% elongation than the front side member. Furthermore, the swimsuit of the present invention is a swimsuit in which a front member extending from the abdomen to the front side of the thigh and a rear member extending from the buttocks to the rear side of the thigh are joined, The rear member is characterized in that it has a larger elongation stress at 50% elongation and a greater elongation stress at 30% elongation than the front member. In the swimsuit of the present invention, by increasing the elongation stress of the rear member, the output at the time of hip joint extension is improved, or the hip joint extension is supported, and it becomes possible to swim quickly. Moreover, it becomes easy for a wearer to move a hip joint and to attach / detach a swimsuit by making the elongation stress of a front side member smaller than the elongation stress of a rear side member.

  The rear member preferably has an elongation stress at the time of 50% elongation in the height direction of the wearer greater than an elongation stress at the time of 50% elongation in the lateral direction of the wearer. Moreover, it is also preferable that the extension stress at the time of 30% expansion | extension of a wearer's height direction is larger than the elongation stress at the time of 30% expansion | extension of a wearer's lateral direction. Furthermore, the rear side member has an elongation stress at the time of 50% elongation in the wearer's height direction that is greater than an elongation stress at the time of the wearer's lateral direction elongation by 50%, It is also preferred that the elongation stress is greater than the elongation stress at 30% elongation in the lateral direction of the wearer. For the rear member, especially by increasing the elongation stress in the height direction, a strong tension is applied in the height direction from the wearer's buttocks to the rear side of the thigh, and as a result, the output by hip joint extension during swimming is improved. In addition, the extension of the hip joint is effectively supported. In addition, by making the lateral direction extension stress smaller than the height direction extension stress for the rear member, it becomes easier to pass the legs and the trunk through the swimsuit, and the swimsuit can be easily attached and detached.

  The rear side member may have an elongation stress at 50% elongation in the height direction of the wearer of 7.0 N or higher and / or an elongation stress at 30% elongation in the height direction of the wearer of 4.0 N or higher. preferable. Further, the front side member has an elongation stress of 50 N or less when stretched by 50% in the height direction and lateral direction of the wearer and / or an elongation stress of 30% when stretched by 30% in the height direction and lateral direction of the wearer. .8N or less is preferable. Furthermore, it is preferable that the rear member covers a range of 25% to 75% of the circumference around the waist, and covers a range of 25% to 75% of the circumference around the thigh.

  Examples of the swimsuit of the present invention include a spats type up to the knee or a short John type.

  In the swimsuit of the present invention, since the rear member has a greater elongation stress than the front member, the output during hip extension is improved, or the extension of the hip joint is supported. It becomes easy to move and remove the swimsuit.

The schematic of a spats type swimsuit is shown as one embodiment of the swimsuit of the present invention. As an embodiment of the swimsuit of the present invention, a schematic diagram of a short John type swimsuit is shown.

  The swimsuit of the present invention aims to make it possible to swim quickly by improving the output at the time of kicking when swimming or at the time of hip extension that is required at the start or turn. A characteristic is that the extension stress of the rear member extending from the rear side of the thigh is larger than the extension stress of the front member extending from the abdomen to the front side of the thigh. The swimsuit of the present invention improves the output at the time of hip joint extension by increasing the extension stress of the rear member, or supports the extension of the hip joint. By making it smaller, it becomes easier for the wearer to move the body (especially the hip joint) and to attach / detach the swimsuit.

  For example, in conventional swimwear, the wearer's body is tightened by increasing the stretching stress in the wearer's lateral direction (circumferential torso and legs), thereby reducing the projected area from above the body (overhead). The goal is to make it possible to swim fast, by suppressing muscle vibrations or stabilizing posture. However, if the wearer's lateral direction (trunk or leg circumferential direction) is increased to increase its function as a swimsuit for swimming, the swimsuit becomes too much pressure on the wearer and obstructs body movement. There is a risk of problems such as being difficult to attach or detach. However, the swimsuit of the present invention increases the output during hip extension or supports the extension of the hip joint while maintaining the function of the conventional swimsuit by making the extension stress of the rear member greater than the extension stress of the front member. Allows you to swim faster. Further, by providing both a rear member having a large extension stress and a front member having a low extension stress around the wearer's waist and thighs, it becomes easy to move the body (particularly the hip joint) and to attach / detach the swimsuit. .

  The shape of the swimsuit of the present invention is not particularly limited as long as it is covered from the wearer's abdomen and buttocks to the thigh when worn, for example, spats that cover the wearer's abdomen and buttocks to above the knee Type, Long Spats type covering from the wearer's abdomen and buttocks to ankle, Short John type covering from the upper body of the wearer to the knee, Long John type covering from the upper body of the wearer to the ankle, Below the neck of the wearer The full body type that covers almost the whole body up to the wrist and ankle.

  In the swimsuit of the present invention, the front member covers a portion extending from the wearer's abdomen to the front side of the thigh, and the rear member has a portion extending from the wearer's buttocks to the rear side of the thigh. cover. The front member and the rear member are joined to each other to form a lower body portion extending from the wearer's abdomen or buttocks to the thigh. Therefore, in the wearer's abdomen or buttocks to thigh, the waist and thighs are not covered with either the front member or the rear member, and the front member and the rear member cooperate. To cover the waist and thighs. In the swimsuit of the present invention, by joining the front member and the rear member in this way, the waistline and thighs are not covered with only a member having a large elongation stress, and the hip joint can be easily moved. At the same time, it is easy to attach and detach the swimsuit. In addition, by providing a member with a large elongation stress so as to extend from the buttocks to the back of the thigh, tension is applied from the wearer's buttocks to the back of the thigh, and as a result, the hip joint during swimming The output by extension is improved and the extension of the hip joint is effectively supported.

  In the swimsuit of the present invention, a front member that extends from the abdomen to the front side of the thigh and a rear member that extends from the buttocks to the back side of the thigh are joined together. It is composed of a single material so as to develop a uniform elongation stress from the abdomen or the buttocks to the thigh, and another reinforcing member (for example, polyurethane tape or the like) is formed from the buttocks to the rear part of the thigh. It is different from the swimsuit to which the elastic member is attached. When the reinforcing member is attached, the reinforcing member may be peeled off and the durability of the swimsuit may be reduced, or the fitting property may be reduced or the air permeability may be impaired at the portion where the reinforcing member is attached, so that the wearing feeling may be reduced. .

  The front member and / or the rear member may extend below the thigh (for example, below the knees or ankles), and extend above the abdomen or the buttocks (for example, to the shoulders or neck). May be. Further, each of the front member and / or the rear member may be formed by connecting a plurality of members.

  1 and 2 show examples of the swimsuit of the present invention. FIG. 1 shows a spats type swimsuit, and FIG. 2 shows a short john type swimsuit.

  The swimsuit 1 shown in FIG. 1 is formed by joining a front member 2 extending from the abdomen to the front side of the thigh and a rear member 3 extending from the buttocks to the rear side of the thigh. .

  The swimsuit 11 shown in FIG. 2 is formed by joining a front member 12 extending from the abdomen to the front side of the thigh and a rear member 13 extending from the buttocks to the rear side of the thigh. Is formed. The upper body portion of the swimsuit 11 extends so that the front member 12 covers the front side of the upper body from the abdomen to the shoulder, and the rear member 13 extends so as to partially cover the rear side of the upper body from the buttocks to the back, The front member 12 and the rear member 13 are joined and formed along the wearer's body side. Moreover, the upper body part of the swimsuit 11 is connected to the upper part of the front member 12 and the upper part of the rear member 13 by a stretchable shoulder strap.

  As shown in FIGS. 1 and 2, the swimsuit of the present invention is preferably a spats type or short john type swimsuit in which the hem of the swimsuit is located on the knee. Such a swimsuit satisfies the regulations of the International Swimming Federation (FINA) as of April 2011 and can be suitably used as a swimsuit for competitive swimming.

  1 and 2 show a swimsuit in which the front member covers the wearer's front half and the rear member covers the wearer's rear half. The range covering the periphery of is not limited to the embodiment shown in FIGS. In the swimsuit of the present invention, from the abdomen or buttocks to the thigh of the wearer, the front member covers a part of the waistline and the rear member covers the other part, and the front member covers a part around the thigh. The ratio of the range in which the rear member covers the other part and the front member and the rear member cover the waist and thighs is not particularly limited. However, in order to appropriately arrange the rear member having a large elongation stress and the front member having a small elongation stress so as to ensure the effect of the swimsuit of the present invention, the rear member has a circumferential length of 25. % To 75% or less (more preferably 33% or more to 67% or less), and 25% to 75% or less of the circumference around the thigh (more preferably 33% to 67% or less). It is preferable to cover the range. Similarly, the front member covers a range of 25% or more and 75% or less of the circumference around the waist (more preferably a range of 33% or more and 67% or less), and 25% or more and 75% or less of the circumference around the thigh. It is preferable to cover the range of (more preferably 33% or more and 67% or less). In addition, the said ratio is a ratio in the non-elongation state of a swimsuit.

  In the swimsuit of the present invention, the rear member has a larger elongation stress than the front member. Specifically, the front member and the rear member are stretched in the height direction of the wearer under the same stretching conditions. When measuring the stress and the lateral extension stress, respectively, either the height extension stress or the lateral extension stress of the rear member is both the height extension stress and the lateral extension stress of the front member. It only needs to be larger. In addition, a wearer's height direction means the direction from a wearer's head to a leg | foot, and a wearer's horizontal direction means a wearer's left-right direction. Accordingly, the lateral direction is orthogonal to the height direction. The wearer's height direction and lateral direction of the front member and the rear member mean directions determined in a state in which the swimsuit is worn by the wearer.

  The elongation stress measures the elongation stress at 50% elongation and / or 30% elongation. Accordingly, in the swimsuit of the present invention, the elongation stress at the time of 50% elongation is greater in the rear member than the front member, or the elongation stress in the elongation at 30% is greater in the rear member than in the front member. Or both the extension stress at the time of 50% extension and the extension stress at the time of 30% extension are larger in the rear member than in the front member. Preferably, in the swimsuit of the present invention, in the entire extension range of 30% to 50%, the rear member has a higher extension stress at the same extension than the front member.

  The tensile stress is obtained by pulling a test piece to be measured with a tensile tester and measuring the stress at that time. Specifically, a test piece cut out with a width of 1 inch (2.54 cm) is fixed between the fasteners so that the holding interval is 100 mm. Then, while pulling the test piece at a pulling speed of 200 mm / min, the stress when the distance between the fasteners is 130 mm and the stress when the distance is 150 mm are measured. The stress when the distance between the fasteners is 130 mm is defined as a stress at 30% elongation, and the stress when the distance between the fasteners is 150 mm is defined as a stress at 50% elongation.

  In the swimsuit of the present invention, the elongation stress is measured under the condition of being stretched by 30% because the swimsuit for swimming is generally worn in a state where it is stretched by about 25% to 35% at the buttocks. That is, by defining the elongation stress at the time of 30% elongation, it is possible to support hip extension at the time of kicking when swimming and effectively increase the swimming speed.

  In the swimsuit of the present invention, the elongation stress is measured under the condition of being stretched by 50% because the hip of the swimsuit is stretched by about 50% when the hip joint is bent at the start or at the time of swimming. As described above, the swimsuit for swimming is worn in a state where the hip is stretched by about 25% to 35%, and when the hip joint is bent at the start or turn, the skin of the hip is stretched by about 15% to 25%. In other words, when the wearer bends the hip joint while wearing the swimsuit, the buttocks of the swimsuit are stretched by about 50%. Therefore, by defining the elongation stress at the time of 50% elongation, it is possible to effectively increase the output by extending the hip joint at the start or at the time of swimming.

  In the swimsuit of the present invention, it is preferable that the rear member has an elongation stress at the time of 50% elongation in the wearer's height direction larger than the elongation stress at the time of 50% elongation in the wearer's lateral direction. Moreover, it is also preferable that the extension stress at the time of 30% expansion | extension of a wearer's height direction is larger than the elongation stress at the time of 30% expansion | extension of a wearer's lateral direction. Furthermore, the rear side member has an elongation stress at the time of 50% elongation in the wearer's height direction that is larger than an elongation stress at the time of 50% elongation in the wearer's lateral direction and 30% in the wearer's height direction. It is also preferable that the elongation stress at the time is larger than the elongation stress at the time of 30% elongation in the lateral direction of the wearer. More preferably, in the entire extension range of 30% to 50%, the rear side member has an extension stress in the height direction at the same level that is greater than the extension stress in the lateral direction. For the rear member, especially by increasing the elongation stress in the height direction, a strong tension is applied in the height direction from the wearer's buttocks to the rear side of the thigh, and as a result, the output by hip joint extension during swimming is improved. In addition, the extension of the hip joint is effectively supported. In addition, by making the lateral direction extension stress smaller than the height direction extension stress for the rear member, it becomes easier to pass the legs and the trunk through the swimsuit, and the swimsuit can be easily attached and detached.

  The rear member preferably has an elongation stress at the time of 50% elongation in the wearer's height direction of 7.0 N or more, and more preferably 8.0 N or more. Moreover, it is preferable that the elongation stress at the time of 30% expansion | extension of a wearer's height direction is 4.0N or more, and, as for a rear side member, it is more preferable that it is 4.5N or more. If the elongation stress at the time of 50% elongation in the height direction of the rear member is 7.0 N or more, the swimmer wears the swimsuit of the present invention to effectively output the hip joint at the start and at the turn It becomes easy to improve. Further, if the elongation stress at the time of 30% elongation in the height direction of the rear member is 4.0 N or more, the swimmer wears the swimsuit of the present invention, so that the hip joint extension is supported at the time of swimming kick, Speed is likely to improve effectively. For example, in a conventional swimsuit, the elongation stress at 50% elongation of the members constituting the swimsuit is at most about 6.0 N, and the elongation stress at 30% elongation is at most about 3.8 N. However, in the swimsuit of the present invention, by providing a rear member separately from the front member, a high tension is applied to the portion from the buttocks to the rear side of the thigh that particularly affects the extension of the hip joint. It is possible to apply a high elongation stress. In addition, since there is a possibility that the movement of the hip joint may be hindered even if the elongation stress in the height direction of the rear member is excessively increased, the elongation stress at the time of 50% elongation in the height direction of the rear member is preferably 30 N or less. 20N or less is more preferable, and the elongation stress at 30% elongation in the height direction of the rear member is preferably 18N or less, and more preferably 12N or less.

  As described above, the wearer's lateral extension stress of the rear member is preferably smaller than the wearer's height direction stress, and more preferably, the rear member is worn by the wearer under the same extension conditions. The extensional stress in the horizontal direction is 70% to 95% of the extensional stress in the height direction. If the rear member is configured in this manner, the swimsuit can be easily attached and detached, and the body can be moved smoothly while wearing the swimsuit.

  The front member preferably has an elongation stress at the time of 50% elongation in the height direction and the lateral direction of the wearer of 6.0 N or less, and has an elongation stress at the time of 30% elongation in the height direction and the lateral direction of the wearer. It is preferable that it is 3.8 N or less. If the elongation stress in the height direction and the lateral direction of the front member is determined in this way, the wearer can easily move the hip joint and attach / detach the swimsuit even if the elongation stress of the rear member increases. . On the other hand, since it is preferable that the front member acts to tighten the front side of the wearer's abdomen and thigh to some extent, the elongation stress at the time of 50% elongation in the height direction and the lateral direction of the front member is 3.0 N or more. Preferably, 4.0 N or more is more preferable, and the elongation stress at the time of 30% elongation in the height direction and the lateral direction of the front member is preferably 2.0 N or more, and more preferably 2.5 N or more.

  In the swimsuit of the present invention, as long as the front member and the rear member are configured as described above, the materials constituting the front member and the rear member are not particularly limited. For example, the front member and the rear member may be made of a woven fabric or a knitted fabric formed from elastic yarn. The woven structure of the woven fabric is not particularly limited, and a known woven structure may be adopted. Examples of the woven fabric include plain weave, twill weave and satin weave. The knitting structure of the knitted fabric is not particularly limited, and a known knitting structure may be adopted. Examples of the knitting structure of the knitted fabric include flat knitting, rubber knitting, double-sided knitting, and half knitting. Examples of the elastic yarn include polyurethane yarn and the like. For example, the elongation stress of the woven fabric or the knitted fabric can be changed by appropriately selecting the thickness and chemical structure of the polyurethane yarn. The elongation stress of the woven fabric or the knitted fabric can be changed by appropriately selecting the woven fabric of the woven fabric or the knitted fabric of the knitted fabric.

  The woven fabric or knitted fabric constituting the front member and the rear member may be formed of an elastic yarn and an inelastic yarn. In this case, for example, the elongation stress of the woven fabric or the knitted fabric can be changed by forming the woven fabric or the knitted fabric from the composite yarn including the elastic yarn and the inelastic yarn and adjusting the mixing ratio of the elastic yarn and the inelastic yarn. As the inelastic yarn, polyester yarn, nylon yarn or the like can be used. As the composite yarn, it is preferable to use a core spun yarn in which an elastic yarn is coated with an inelastic yarn. When such a composite yarn is used, the touch of the fabric or knitted fabric is improved.

  In the swimsuit of the present invention, the front member and the rear member are preferably made of a woven fabric. This is because, in the woven fabric, it is easy to make a difference in the extension stress depending on the extension direction by changing the yarn used for the warp and the weft or changing the weave density of the warp and the weft. That is, if the front member and the rear member are made of a woven fabric, it becomes easy to arbitrarily set the wearer's height direction stress and the wearer's lateral direction stress respectively.

  The front member and the rear member are configured as follows, for example. That is, each of the front side member and the rear side member is composed of a plain fabric formed from a core spun yarn using a polyurethane yarn as a core yarn and a nylon yarn as a sheath yarn. At this time, the front member is a core spun yarn in which a 44 dtex polyurethane yarn is coated with a 17 dtex yarn composed of five nylon yarns, and a 44 dtex polyurethane yarn is a nylon yarn. A core spun yarn covered with 24 dtex yarn composed of 7 pieces is used. As a result, the mixing ratio of the yarns is 62% nylon yarn / 38% polyurethane yarn for the front member and 66% nylon yarn / 34% polyurethane yarn for the rear member. By configuring the front member and the rear member in this manner, the elongation stress of the rear member can be made larger than that of the front member. Furthermore, with respect to the rear member, by making the weave density of the yarn in the height direction larger than the weave density of the yarn in the transverse direction, the elongation stress in the height direction can be made larger than the elongation stress in the lateral direction. The front member and the rear member are not limited to the configuration example.

  The front member and the rear member may be joined by heat fusion, ultrasonic bonding, adhesive, stitching, or the like. When joining the front member and the rear member by stitching, for example, the front member and the rear member are made of one continuous fabric or knitted fabric, and the front member and the rear member are mutually woven or knitted. Variations are also included in the suturing. The adhesive includes an adhesive tape. In addition, it is preferable to employ | adopt ultrasonic bonding for the joining of the elastic members like a front side member and a rear side member from the point which can be firmly joined simply. Furthermore, a stretch tape having a relatively high elasticity in the direction along the joint and a low elasticity in the direction orthogonal to the direction is joined to the joint where the front member and the rear member are joined. It is preferable to adhere to. By adhering the stretch tape to the joint portion in this way, it becomes possible to prevent the opening of the joint portion from occurring.

  The swimsuit of the present invention is preferably provided with an anti-slip material along the hem on the skin side of the swimsuit. The “hem” means the edge of the leg opening through which the wearer's leg passes. Since the swimsuit of the present invention is composed of a rear member having a large elongation stress from the buttocks to the rear side of the thigh, only the rear part of the swimsuit is easily pulled upward, There is a possibility that the adhesion of the swimsuit to the wearer's skin may be reduced. Therefore, by providing an anti-slip material along the hem on the skin surface side of the swimsuit, the adhesion of the swimsuit to the wearer's skin at the hem portion is improved and the appearance is improved.

  As the anti-slip material, a conventionally known elastic body such as natural rubber, silicone or polyurethane may be used. However, in order to have a higher anti-slip effect, it is preferable to use a woven fabric, a knitted fabric, or a non-woven fabric made of yarn containing nanofibers with a fiber diameter of 1 μm or less as the anti-slip material. It is more preferable to use a woven fabric composed of yarns containing nanofibers of 1 μm or less.

Hereinafter, the present invention will be described in more detail with reference to examples, but the scope of the present invention is not limited thereto.
(1) Measurement of hip joint extension maximum torque Swimsuit A was prepared as a swimsuit of the present invention, and swimsuit B was prepared as a comparison object. Swimsuit A and swimsuit B are both spats-type swimsuits. As shown in FIG. 1, the swimsuit A is formed by joining a front member extending from the abdomen to the front side of the thigh and a rear member extending from the buttocks to the rear side of the thigh. The elongation stress at 50% elongation in the height direction is 5.6N, the elongation stress at 30% elongation is 3.6N, the elongation stress at 50% elongation in the lateral direction of the front side member is 4.9N, at 30% elongation The elongation stress of 3.4N, the elongation stress at 50% elongation in the height direction of the rear member is 8.3N, the elongation stress at 30% elongation is 5.0N, the elongation of the rear member at 50% in the lateral direction The elongation stress was 7.0 N, and the elongation stress at 30% elongation was 4.5 N. The swimsuit B is composed of a single material, and the elongation stress at 50% elongation in the height direction is 5.6N, the elongation stress at 30% elongation is 3.6N, and the elongation stress at 50% elongation in the transverse direction is 4N. .9N, the elongation stress at 30% elongation was 3.4N.

  Five subjects were asked to wear swimsuit A or swimsuit B, and the constant-velocity hip extension maximum torque was measured with swimsuit A or swimsuit B worn. The constant velocity hip joint extension maximum torque was measured using a constant velocity muscle strength measuring device manufactured by BIODX MEDICAL SYSTEMS, USA. The measurement conditions were three conditions of 60 ° / second, 120 ° / second, and 180 ° / second. With five subjects wearing swimsuit A or swimsuit B, the maximum isokinetic hip extension torque was measured 5 times, and the average value of all measurements was calculated for swimsuit A and swimsuit B, respectively. As shown in Table 1, in the swimsuit A which is the swimsuit of the present invention, the value of the maximum hip extension torque was larger than that of the swimsuit B which is the conventional swimsuit. Accordingly, it was found that the output during hip joint extension can be improved by wearing the swimsuit of the present invention.

(2) Measurement of start jump speed Five test subjects were asked to wear swimsuit A or swimsuit B, and the start jump speed from the start stand of the pool was measured. A force plate was installed on the start stand, and the impulse was measured to determine the horizontal jump speed at the start. In swimsuit B, the average horizontal jump speed of 5 people was 464.3 cm / second, while in swimsuit A, the average horizontal jump speed of 5 persons was 470.6 cm / second. By wearing the swimsuit A, the speed at the start could be increased.

(3) Measurement of underwater moving speed at the time of kicking Five subjects were asked to wear swimsuit A or swimsuit B, and the moving speed when swimming with a dolphin kick was measured. The moving speed was determined by photographing the subject's swimming with an underwater camera. In swimsuit B, the average underwater movement speed for five people was 180.7 cm / second, whereas in swimsuit A, the average underwater movement speed for five persons was 183.0 cm / second. By wearing the swimsuit A, the swimming speed (speed at the time of kick) became faster.

(4) Measurement of swimming time 14 subjects who belonged to the university swimming club were asked to wear the swimsuit A or the swimsuit B, and the time of 15 m passing from the start when swimming in the crawl was measured. In swimsuit B, the average time for 14 people was 6.50 seconds, whereas in swimsuit A, the average time for 14 people was 6.43 seconds, which was 0.07 seconds faster. Moreover, when 12 out of 14 people wear the swimsuit A, it was a faster time.

1,11: Swimsuit 2,12: Front side member 3,13: Rear side member

Claims (11)

A swimsuit in which a front member extending from the abdomen to the front side of the thigh and a rear member extending from the buttocks to the rear side of the thigh are joined,
The swimsuit according to claim 1, wherein the rear member has a larger elongation stress at 50% elongation than the front member.   The swimsuit according to claim 1, wherein the rear member has an elongation stress at 50% elongation in the height direction of the wearer greater than an elongation stress at 50% elongation in the lateral direction of the wearer. A swimsuit in which a front member extending from the abdomen to the front side of the thigh and a rear member extending from the buttocks to the rear side of the thigh are joined,
The swimsuit according to claim 1, wherein the rear member has a larger elongation stress at 30% elongation than the front member.   The swimsuit according to claim 3, wherein the rear member has an elongation stress at 30% elongation in the height direction of the wearer greater than an elongation stress at 30% elongation in the lateral direction of the wearer. A swimsuit in which a front member extending from the abdomen to the front side of the thigh and a rear member extending from the buttocks to the rear side of the thigh are joined,
The swimsuit according to claim 1, wherein the rear member has a larger elongation stress at 50% elongation and a greater elongation stress at 30% elongation than the front member.   The rear side member has an elongation stress at the time of 50% elongation in the wearer's height direction that is greater than an elongation stress at the time of the wearer's 50% elongation, and an elongation stress at the time of 30% elongation in the wearer's height direction. The swimsuit according to claim 5, wherein is larger than an elongation stress at the time of 30% elongation in the lateral direction of the wearer.   The rear member has an elongation stress at 50% elongation in the height direction of the wearer of 7.0 N or more and / or an elongation stress at 30% elongation in the height direction of the wearer of 4.0 N or more. Item 7. The swimsuit according to any one of Items 1 to 6. The swimsuit according to any one of claims 1 to 7, wherein the rear member has a wearer's lateral elongation stress of 70% to 95% of the wearer's height direction stress. The front member has an elongation stress of 50 N or less when stretched by 50% in the height direction and lateral direction of the wearer and / or an elongation stress of 30% when stretched by 30% in the height direction and lateral direction of the wearer. It is 8N or less, The swimsuit as described in any one of Claims 1-8 . The rear member covers 25% to 75% or less of the circumference of the waist, any one of claim 1 to 9 covering 25% to 75% or less of the circumferential length of the thigh around Swimwear as described in. The swimsuit according to any one of claims 1 to 10 , wherein the swimsuit is a spats type up to a knee or a short John type.

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