Method of wearing swimsuit and swimsuit

Abstract

To provide a method of wearing a swimsuit and a swimsuit capable of producing a desired torsional force.SOLUTION: The swimsuit 1, which is made of an elastic fabric covering at least from the lumbar region to a part of the lower body, with a prescribed compression, is worn by twisting a skirt part 22 of the swimsuit so that a mark P provided in the swimsuit is positioned in a prescribed position.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a method for wearing a swimsuit and to a swimsuit. [Background technology]

[0002] Generally, competitive swimming suits are required to support the wearer's posture and / or muscle movement in order to improve swimming efficiency.

[0003] Patent Document 1 discloses a swimsuit that stabilizes posture in the water and supports movement of the hamstrings by providing band-shaped tightening parts along the length of the body from the buttocks to the thighs on each side. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2017 / 144940 Summary of the Invention [Problem to be solved by the invention]

[0005] As a result of extensive research, the inventors discovered that competitive swimmers can efficiently exert propulsive force by kicking with their hip joints internally rotated.

[0006] Based on the above findings, the present invention provides a swimsuit and a method for wearing the swimsuit that are capable of generating a torsional force for supporting internal rotation of the wearer's hip joint. [Means for solving the problem]

[0007] One aspect of the present invention provides a method for wearing a swimsuit made of stretchable fabric that covers at least a part of the lower body from near the waist and has a predetermined compression, by twisting the hem of the swimsuit so that a mark on the swimsuit is located at a predetermined position.

[0008] According to the present invention, the amount of twisting of the bottom of the swimsuit can be controlled by the mark indicating the amount of twisting, so that the swimsuit with a predetermined pressure can be twisted appropriately to generate a desired twisting force. As a result, for example, a desired support force can be easily applied to the wearer's hips to knees where the swimsuit comes into contact, so as to support the hip joints. Effect of the Invention

[0009] According to the present invention, it is possible to provide a swimsuit and a method for wearing the swimsuit that can generate a desired torsional force. [Brief description of the drawings]

[0010] [Figure 1] 1 is a front view of a swimsuit according to the present invention. [Diagram 2] FIG. 2 is a side view of the left side of the swimsuit according to the present invention. [Diagram 3] FIG. [Figure 4] FIG. 2 is a front view of the swimsuit according to the present invention in an inside-out state. [Diagram 5] FIG. 2 is a rear view of the swimsuit according to the present invention in an inside-out state. [Figure 6] A partial schematic diagram of a wearer from the waist to the feet. [Figure 7] FIG. 7 is an end view taken along line VII-VII in FIG. [Figure 8] FIG. 8 is an enlarged schematic view of the crotch area and its surroundings indicated by the arrow VIII in FIG. 1, as viewed from below. [Figure 9] FIG. 9 is a schematic diagram showing an end face taken along line IX-IX in FIG. 8 . [Figure 10] FIG. 9 is a schematic diagram showing an end face taken along line XX in FIG. 8. [Figure 11] 6 is an enlarged rear view showing a region indicated by an arrow XI in FIG. 5 in a schematic cross-sectional view. [Figure 12] FIG. 2 is a front view of the swimsuit according to the present invention when twisted and worn. [Figure 13] FIG. 2 is a schematic diagram showing the hem of the swimsuit according to the present invention when worn without twisting. [Figure 14] 13A to 13C are a front view, a side view, a back view, and a schematic view of a hem portion of a swimsuit according to a second embodiment. [Figure 15] 13A to 13C are a front view, a side view, a back view, and a schematic view of a hem portion of a swimsuit according to a third embodiment. [Figure 16] 13A to 13C are a front view, a side view, a back view, and a schematic view of a hem portion of a swimsuit according to a fourth embodiment. [Figure 17] FIG. 11 is a development view showing a schematic view of the swimsuit according to the fourth embodiment in an unfolded state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The present invention relates to a swimsuit. Prior to describing the configuration of this swimsuit 1, an outline of the relationship between the swimsuit 1 and a wearer 9 when worn will be described with reference to FIG.

[0012] As a result of extensive research, the inventors have found that competitive swimmers can efficiently exert propulsive force by kicking with their hip joints internally rotated. FIG. 1 is a front view of swimsuit 1 according to an embodiment of the present invention in a worn state before twisting. The swimsuit 1 shown in FIG. 1 is worn by a wearer 9 with the hem 22 twisted toward the inside of the wearer's 9 thighs 91 (arrow A). This generates a twisting force in the inward direction from the wearer's 9 waist 92 to the thighs 91, and applies a support force to the wearer's 9 hip joints 93 (see FIG. 6) in an inwardly rotated state, thereby controlling the posture of the wearer 9.

[0013] A spats-type competitive swimsuit (hereinafter also referred to as "swimsuit") 1, which is one embodiment of the swimsuit according to the present invention, will be described below with reference to the drawings. Below, the top and bottom, left and right, and front and back of the swimsuit 1 are defined based on a state in which a wearer 9 wearing the swimsuit 1 is standing upright. Furthermore, with respect to the wearer 9, the direction from the outer surface of the cross section (thickness direction) of the fabric is defined as the inside, and the opposite direction is defined as the outside, the direction toward the outside in the body width direction is defined as the outside, and the direction toward the center in the body width direction is defined as the inside.

[0014] 1 to 3, swimsuit 1 has a main body portion 2 that covers at least a portion of the lower body from the vicinity of waist portion 92, an anti-slip member 4 attached to the inner surface of main body portion 2 to improve the adhesion and fit of swimsuit 1 to the skin of wearer 9, a tape member 5 attached to main body portion 2, and a marker P that guides the amount of twisting of hem portion 22.

[0015] Referring to FIG. 1, the main body 2 is made of a stretchable fabric and has a predetermined wearing pressure. The stretchable fabric is assumed to be stretched by 5.9% to 30.5% and worn in a state where it is in close contact with the wearer 9. The stretch rate of the stretchable fabric may be calculated, for example, from the circumference of the hem 22 in the pattern and the circumference of the hem when the garment is worn on a mannequin. The first stretchable fabric, which is located on the front side of the wearer and corresponds to the fabric covering the thighs 91, more specifically, a test piece cut from the area indicated by a in FIG. 1, preferably has a stretch side stress of 5.12 N to 19.7 N at 30% stretch in the body length (warp) direction, and in this embodiment, for example, 7.5 N. The first stretchable fabric preferably has a stretch side stress of 4.65 N to 11.0 N at 30% stretch in the body width (weft) direction, and in this embodiment, for example, 6.5 N. In this embodiment, the recovery side stress of the first stretchable fabric when stretched 30% in the body length direction is 0.297N, and the recovery side stress when stretched 30% in the body width direction is 1.036N.

[0016] If the stress on the stretch side of the first stretchable fabric when stretched 30% in the body length direction is less than 5.12 N and / or if the stress on the stretch side of the first stretchable fabric when stretched 30% in the body width direction is less than 4.65 N, the tightening (pressure) is weak and it is difficult to obtain internal rotation support. If the stress on the stretch side of the first stretchable fabric when stretched 30% in the body length direction exceeds 19.7 N and / or if the stress on the stretch side of the first stretchable fabric when stretched 30% in the body width direction exceeds 11.0 N, the tightening (pressure) is strong and it is difficult to twist the hem part 22. In addition, the pressure becomes excessive and is likely to hinder the wearer's movements.

[0017] The stress when the elastic fabric was stretched in both the longitudinal and transverse directions was measured by preparing one piece of fabric in each direction, 50 mm wide and 200 mm long, and fixing it to a tensile testing machine (Shimadzu Corporation: Autograph AGS-X) with a gripping width of 65 mm at the top and bottom and a gripping distance of 100 mm. The fabric was stretched at a tensile speed of 200 mm / min, and the stress when the elongation rate was 30% was read and recorded as the "elongation side stress". When the elongation rate reached 100%, it was allowed to recover at a recovery speed of 200 mm / min, and the stress when the elongation rate during recovery was 30% was read and recorded as the "recovery side stress".

[0018] The second stretchable fabric, which corresponds to the fabric located on the back side of the wearer and covering the thighs 91, more specifically, a test piece cut from the region indicated by b in Fig. 3, preferably has an extension side stress of 13.7 N to 28.0 N at 30% elongation in the body length direction, and in this embodiment, for example, 15.6 N. The second stretchable fabric preferably has an extension side stress of 11.6 N to 33.1 N at 30% elongation in the body width direction, and in this embodiment, for example, 19.0 N. In this embodiment, the recovery side stress of the second stretchable fabric at 30% elongation in the body length direction is 1.54 N, and the recovery side stress at 30% elongation in the body width direction is 1.84 N.

[0019] If the stress on the stretch side of the second stretch fabric when stretched 30% in the body length direction is less than 13.7N and / or if the stress on the stretch side of the second stretch fabric when stretched 30% in the body width direction is less than 11.6N, the tightening (pressure) is weak and it is difficult to obtain internal rotation support. If the stress on the stretch side of the second stretch fabric when stretched 30% in the body length direction exceeds 28.0N and / or if the stress on the stretch side of the second stretch fabric when stretched 30% in the body width direction exceeds 33.1N, the tightening (pressure) is strong and it is difficult to twist the hem part 22. In addition, the pressure becomes excessive and is likely to hinder the wearer's movements.

[0020] As shown in FIG. 1, the main body 2 has a waist portion 21 that is positioned at the waist 92 of a wearer 9, and a pair of left and right hem portions 22, 22 into which the left and right legs of the wearer are inserted.

[0021] A belt-shaped anti-slip member 4 is attached to each of the waist portion 21 and the hem portion 22. More specifically, the anti-slip member 4 has a waist tape 41 located at the waist portion 21 and a hem tape 42 located at the hem portion 22. The waist tape 41 is adhered to the inner surface of the main body portion 2 along the entire circumference along the upper edge of the waist portion 21. Note that the waist tape 41 may have a portion where the waist tape 41 is not arranged, for example, when a string for waist adjustment is provided. The hem tape 42 is adhered to the inner surface of the main body portion 2 along the entire circumference along the lower edge of the pair of left and right hem portions 22.

[0022] The waist tape 41 and the hem tape 42 bring the waist portion 21 and each hem portion 22 into close contact with the skin of the wearer 9, thereby preventing the waist portion 21 and the hem portion 22 from slipping relative to the wearer 9. More specifically, if slippage occurs between the waist portion 21 and the hem portion 22 and the wearer 9, when the hem portion 22 is twisted and worn, it becomes difficult to maintain the twisted state of the hem portion 22 relative to the waist portion 21, making it difficult for the support force in the inward rotation direction to act. In contrast, by preventing the waist portion 21 from slipping relative to the lower back portion 92, the hem portion 22 can be twisted with the waist portion 21 fixed, and by preventing the hem portion 22 from slipping relative to the thigh portion 91, it becomes easier to fix the hem portion 22 in a twisted state relative to the waist portion 21.

[0023] The anti-slip member 4 may be made of any material having a friction coefficient that does not cause slippage between the wearer 9 and the anti-slip member 4, and may be, for example, a tape with silicone. In this embodiment, the waist tape 41 is made of a tape with silicone having a width of 20 mm, and the hem tape 42 is made of a tape with silicone having a width of 10 mm to 20 mm.

[0024] As shown in Figs. 1 to 3, the main body portion 2 has a front body fabric 31 that covers the abdominal side of a wearer 9, and a back body fabric 32 that covers the buttocks side of the wearer.

[0025] In this embodiment, the main body 2 has a pair of left and right side lines 24 connecting the front body fabric 31 and the back body fabric 32 on both sides in the width direction, a pair of left and right inner crotch lines 25 connecting the front body fabric 31 and the back body fabric 32 on the inside in the width direction, and a crotch portion 23 connected between the pair of left and right inner crotch lines 25. The crotch portion 23 is located in the crotch of the wearer 9, the side lines 24 extend vertically from the waist portion 21 to the hem portion 22 on the outside in the width direction, and each inner crotch line 25 extends vertically from the left and right ends of the crotch portion 23 to the hem portion 22.

[0026] Figures 4 and 5 are a front view and a back view of the swimsuit 1 turned inside out. As shown in Figures 1 to 5, each of the front body fabric 31 and the back body fabric 32 has a front fabric 33 located on the outer side in the thickness direction of the fabric cross section, and a back fabric 34 located on the inner side in the thickness direction of the front fabric 33. In this embodiment, each of the front fabric 33 and the back fabric 34 is made up of a plurality of fabrics.

[0027] 1 to 3, the front fabric 33 has a front front fabric 33a constituting the front body fabric 31, and a back front fabric 33b constituting the back body fabric 32. The front front fabric 33a has a front center fabric 33c arranged in a position corresponding to the wearer's abdomen, and a front left front fabric 33d and a front right front fabric 33e arranged on the left and right sides of the wearer, respectively, sandwiching the front center fabric 33c. The back front fabric 33b has a front left back fabric 33f and a front right back fabric 33g arranged on the left side in the width direction.

[0028] As shown in Figures 4 and 5, the lining fabric 34 has an inner front fabric 34a constituting the front body fabric 31 and an inner back fabric 34b constituting the back body fabric 32. The inner front fabric 34a has a shape corresponding to the front center fabric 33c and is attached to the inside of the front center fabric 33c. The inner back fabric 34b has a shape corresponding to the front left back fabric 33f and the front right back fabric 33g and has an inner left back fabric 34c and an inner right back fabric 34d attached to the inside of the front left back fabric 33f and the front right back fabric 33g. In other words, the lining fabric 34 is not attached to the inside of the front left front fabric 33d and the front right front fabric 33e.

[0029] The back left fabric 34c and the back right fabric 34d have first back fabrics 34e, 34f located on the outer side in the width direction, second back fabrics 34g, 34h located on the inner side and upper side in the width direction, and third back fabrics 34i, 34j located on the inner side and lower side in the width direction.

[0030] In this manner, the main body 2 is formed by sewing or joining a plurality of outer fabrics 33 and lining fabrics 34. Tape members 5 are attached to the portions where the ends of the plurality of outer fabrics 33 and lining fabrics 34 are sewn or joined to each other.

[0031] The tape member 5 has a pair of left and right side tapes 51 extending along the pair of left and right side lines 24, a crotch tape 52 extending along the inner crotch line 25, and a pair of left and right back tapes 53 provided on the back body fabric 32. The tape member 5 has a greater longitudinal tensile stress than the first and second stretchable fabrics constituting the main body 2, and the stretch side stress of the tape member 5 at 30% elongation is set to be 3.0 to 6.7 times that of the first stretchable fabric, and 1.5 to 3.2 times that of the second stretchable fabric.

[0032] As shown in FIG. 1 and the left side view of FIG. 2, the side tape 51 extends in the vertical direction along the side line 24 on the outer surface side of the main body part 2. More specifically, the side tape 51 has a first inclined part 51a that inclines downward and backward from the upper edge of the waist part 21 above the wearer's greater trochanter 94, a second inclined part 51b that inclines forward and downward from below the greater trochanter 94 to the lower edge of the hem part 22, and a curved part 51c that is curved and arranged to wrap around the rear side of the greater trochanter 94 between the first inclined part 51a and the second inclined part 51b. In other words, the curved part 51c is provided in a part corresponding to the greater trochanter 94. In this embodiment, the right side side tape 51 has a configuration similar to that of the left side side tape 51, so a description thereof will be omitted.

[0033] As shown by arrow A in Fig. 2, when the swimsuit 1 is worn with the hem 22 twisted, the side tapes 51 are twisted inward in the width direction starting from the upper end of the first inclined portion 51a. At this time, a support force in the medial rotation direction acts on the greater trochanter 94 from the rear to the front by the curved portion 51c.

[0034] As shown in FIG. 7, in this embodiment, the side tape 51 is formed by laminating the power tape (the first tape T2 having a width of 10 mm and the second tape T3 having a width of 10 mm) T1 and the woven or knitted base fabric tape T4 having a width of 20 mm in this order. Hot melt H is disposed between these tapes T2, T3, and T4, and between the main body 2 and the tapes. The side tape 51 is heat-pressed to the joint portion after the outer edge of the width direction of the front body fabric 31 (front left front fabric 33d) and the outer edge of the width direction of the back body fabric 32 (front left back fabric 33f and first back back fabric 34e) are joined by an ultrasonic sewing machine. The front left back fabric 33f and the first back back fabric 34e may be bonded by hot melt H before being joined to the front left front fabric 33d. The recovery stress of the side tape 51 at 30% elongation is preferably set to 0.5 N or more and 10.73 N or less, and is 3.88 N, for example, in this embodiment.

[0035] 1 and 4, the crotch tape 52 extends along the crotch line 25 and the crotch portion 23 on the inner side of the main body portion 2. More specifically, the crotch tape 52 has a right inner thigh tape portion 52a extending along the right inner thigh line 25a, a left inner thigh tape portion 52b extending along the left inner thigh line 25b, and a crotch tape portion 52c extending in the width direction along the crotch portion 23.

[0036] The right inner thigh tape portion 52a is inclined outward in the width direction from the right end of the crotch portion 23 downward. The left inner thigh tape portion 52b is inclined outward in the width direction from the left end of the crotch portion 23 downward. In other words, when the swimsuit 1 is worn without twisting, the right inner thigh tape portion 52a and the left inner thigh tape portion 52b have their lower ends located closer to the front side in the circumferential direction of the left and right thigh portions 91 than their upper ends, and are in an inverted V shape in a front view. At this time, the lower ends of the right inner thigh tape portion 52a and the left inner thigh tape portion 52b are located on the center side in the width direction of the thigh portions 91. The recovery side stress at 30% elongation of the crotch tape 52 is preferably set to 0.159 N or more and 7.30 N or less, and is, for example, 1.86 N in this embodiment.

[0037] Fig. 8 is an enlarged schematic diagram of the crotch portion 23 and its periphery indicated by the arrow VIII in Fig. 1, as viewed from below. Fig. 9 shows an end view taken along line IX-IX in Fig. 8, and Fig. 10 shows an end view taken along line XX in Fig. 8. As shown in Figs. 8 to 10, the crotch tape 52 is formed by laminating a 10 mm wide third tape T5 and a 20 mm wide woven or knitted base fabric tape T6 in this order. Hot melt H is disposed between the third tape T5 and the fabric tape T6, and between the main body 2 and the third tape T5.

[0038] 8 and 9, in the right inner thigh tape portion 52a, the rear edge portion on the inner side in the width direction of the front body fabric 31 (front right front fabric 33e) and the front edge portion on the inner side in the width direction of the back body fabric 32 (front back fabric 33b and back back fabric 34b) are joined by an ultrasonic sewing machine, and then the third tape T5 and the woven tape T6 are adhered to the joined portion. The left inner thigh tape portion 52b has a similar structure to the right inner thigh tape portion 52a, and therefore a description thereof will be omitted.

[0039] As shown in Figures 8 and 10, in the crotch tape portion 52c, the lower edge of the front body fabric 31 in which the back front fabric 34a is adhered to the front center fabric 33c via hot melt H and the lower edge of the back body fabric 32 in which the second back back fabric 34h is adhered to the front right back fabric 33g via hot melt H are joined by an ultrasonic sewing machine, and then the joint is sewn and pinched (S1) and a third tape T5 is adhered over the seam allowance Y formed by the stitching.

[0040] 8, in the crotch tape portion 52c, after the third tape T5 is adhered, a dividing portion G where the third tape T5 is not continuous is formed in at least one location in the width direction in the crotch portion 23. In this embodiment, the dividing portion G is provided in two locations.

[0041] More specifically, each joint portion where the front body fabric 31 and the back body fabric 32 are joined is likely to be stiffer than other portions because hot melt or tape members are laminated therein. In response to this, by providing the dividing portion G in the crotch tape portion 52c, the stiffness of the portion that should be softened when it comes into contact with the wearer, such as the crotch portion 23, is reduced, thereby preventing the wearer's movement from being hindered. In other words, the dividing portion G functions as a stiffness reducing portion in the crotch portion 23.

[0042] 8 and 10, in the crotch tape portion 52c, bartacking (S2) is formed in three places with the third tape T5, the seam allowance portion Y, and the front body fabric 31 overlapping each other. The bartacking S2 is arranged at the center in the width direction of the main body portion 2 and on both sides of the center portion. By providing the bartacking S2, the tear strength of the crotch portion 23 can be improved, and the rigidity of the crotch portion 23 can be reduced compared to the case where the bartacking S2 is not divided and is formed continuously along the crotch portion 23.

[0043] In this embodiment, the bartacking S2 on both sides is provided so as to coincide with the widthwise position of the dividing portion G. By providing the bartacking S2 at a position corresponding to the dividing portion G where the tear strength is reduced compared to a portion where the dividing portion G is not provided, the reduction in the tear strength of the dividing portion G can be suppressed.

[0044] As shown in FIG. 10, in the crotch tape portion 52c, a woven or knitted base fabric tape T6 that is wider than the third tape T5 is joined to the back side (body surface side) of the third tape T5.

[0045] As shown in Fig. 1, when the swimsuit 1 is worn with the hem portion 22 twisted, the crotch tape 52 is twisted inward in the width direction from the upper end portions of the right inner thigh tape portion 52a and the left inner thigh tape portion 52b. At this time, the right and left inner thigh lines 25a, 25b extend along a straight line L1 that extends along the inner thighs of the wearer 9. In this specification, the straight line L1 is defined as a straight line extending from the line connecting the inner ankle 95 and the medial epicondyle 96 of the femur to the crotch portion 23 as shown in Fig. 6.

[0046] As shown in Figures 3 and 5, each back tape 53 is provided on the inner side of the main body portion 2 and includes a first back tape 53a extending in the vertical direction from the waist portion 21 to the hem portion 22, and a second back tape 53b branching off from the middle position of the first back tape 53a and connected to the inner thigh tape portions 52a, 52b.

[0047] Each first back tape 53a extends from the buttocks 97 to the vicinity of the back side of the knees 98. The first back tape 53a is disposed in the widthwise center of the thighs 91 at a position corresponding to the hamstrings of the wearer 9. Each second back tape 53b intersects with the first back tape 53a near the lower end of the buttocks 97 and is disposed to extend downward, wrapping around the thighs 91 from the inside in the widthwise direction, around the front side.

[0048] 4 and 5, the second back tape 53b has an upper portion 53c that slopes downward and inward in the width direction on the back side, and a lower portion 53d that slopes further downward and outward in the width direction on the front side. The upper portion 53c is disposed at a position that corresponds to the middle portion of the thighs 91 in the vertical direction from the vicinity of the lower part of the buttocks 97, and the lower portion 53d is disposed at a position that corresponds to the middle portion of the thighs 91 in the vertical direction from the vicinity of the upper part of the knees 98. The second back tapes 53b make it easier for the right inner thigh tape portion 52a and the left inner thigh tape portion 52b to be twisted inward in the width direction from the lower end side when the swimsuit 1 is put on with the hem portion 22 twisted.

[0049] FIG. 11 is an enlarged rear view of the area indicated by the arrow XI in FIG. 5, and a schematic cross-sectional view of a portion of the area. As shown in FIG. 11, in this embodiment, the first rear tape 53a is formed by laminating a fourth tape T7 having a width of 10 mm, a fifth tape T8 having a width of 15 mm, and a grip tape T9 having a width of 20 mm in this order. Hot melt H is disposed between these tapes T7, T8, and T9, and between the main body 2 and the tapes. The first rear tape 53a is bonded to the front left rear fabric 33f by bonding the inner edge of the first rear back fabric 34f on the inside in the width direction and the outer edge of the second rear back fabric 34h and the third rear back fabric 34j on the outside in the width direction via hot melt H, and then is heat-pressed to the bonded portion. The inner edge of the first rear back fabric 34f on the inside in the width direction and the outer edge of the second rear back fabric 34h and the third rear back fabric 34j on the outside in the width direction are attached with a gap in the width direction of the first rear tape 53a. The recovery stress of the first backing tape 53a at 30% elongation is preferably set to 0.6 N or more and 14.74 N or less, and is 5.43 N, for example, in this embodiment.

[0050] The second back tape 53b is formed by laminating the sixth tape T10 having a width of 10 mm and the woven or knitted fabric base tape T11 having a width of 20 mm in this order. Hot melt H is disposed between these tapes T10 and T11, and between the main body 2 and the sixth tape T10. The second back tape 53b is bonded to the lower edge of the second back back fabric 34h and the upper edge of the third back back fabric 34j by the hot melt H, and then heat-pressed to the bonded portion. The lower edge of the second back back fabric 34h and the upper edge of the third back back fabric 34j are attached with a gap in the width direction of the second back tape 53b. The recovery side stress of the second back tape 53b at 30% elongation is preferably set to 0.77N or more and 10.64N or less, and is, for example, 3.87N in this embodiment. In other words, the tensile stress of the second backing tape 53b is smaller than that of the first backing tape 53a.

[0051] As shown in Figures 4 and 5, the main body 2 is further reinforced at each joint by attaching a central abdominal tape 54 to the joint between the central front fabric 33c and the left front front fabric 33d and the right front front fabric 33e, and a central back tape 55 to the joint between 33f and 33g in the center of the back.

[0052] As shown in FIG. 1, the swimsuit 1 has a mark P for guiding the amount of twist. In other words, when wearing the swimsuit 1, the hem 22 is twisted to match the mark P, so that the swimsuit 1 is twisted from the waist 21 to the hem 22, and the hip joint 93 of the wearer 9 is inwardly rotated. In this embodiment, the mark P is made of a bar tack sewn with a thread of a different color from the sewing thread. In this embodiment, the mark P is disposed at a circumferential position that generally coincides with the point where the inner thigh line 25 and the hem 22 intersect. FIG. 12 shows the swimsuit 1 in a state where the hem 22 is twisted and worn. When wearing the swimsuit 1, the mark P and the inner thigh line 25a shown by the two-dot chain line are aligned with the inner thigh point P2 of the wearer while twisting the hem 22, so that the hip joint of the wearer 9 is inwardly rotated from the waist 21 to the hem 22, as shown by the arrow B in FIG. 12.

[0053] FIG. 13 is a schematic diagram showing the hem 22 of the swimsuit 1 when worn without twisting. As shown in FIG. 13, the mark P is located on the front side of the inner thigh point P2 of the wearer 9 in the circumferential direction of the hem 22. More specifically, the ratio of the distance D1 from the mark P to the inner thigh point P2 of the wearer 9 to the circumference D of the hem 22 is set to be 10.8% or more and 21.6% or less. The ratio of the distance D1 from the mark P to the inner thigh point P2 of the wearer to the circumference D of the hem 22 can also be rephrased as the amount of twist of the swimsuit 1. The method of setting the predetermined amount of twist and the upper and lower limits of the amount of twist will be described in detail in the examples.

[0054] As shown in Figure 6, in this embodiment, the inner thigh point P2 is defined as the point where a straight line L1 connecting the inner ankle 95 and the medial epicondyle 96 of the femur intersects with the hem 22 of the swimsuit 1 when the swimsuit 1 is put on a specific mannequin (a mannequin manufactured by Nanasai Co., Ltd.: MD-20A (men's)).

[0055] In this way, when the swimsuit 1 is twisted and worn, the inner thigh line 25 is also twisted toward the inside of the thigh 91. In response to this, the length of the inner thigh line 25 is set so that the lower end position of the inner thigh line 25 after the swimsuit 1 is twisted and worn is located at an appropriate position. Specifically, as shown in FIG. 6, the ratio of the distance D3 between the hem 22 of the swimsuit 1 and the knee center 99 to the length L21 of the thigh 91 may be set to 13% or more and 21% or less, for example, 13%. If the ratio of the distance D3 is less than 13.5%, the hem 22 is likely to overlap the knee height position when twisted (when the mark P is placed at the inner thigh), and there are cases where the regulation cannot be satisfied. If the ratio of the distance D3 exceeds 20.9%, the length of the fabric from the waist 21 to the hem 22 is insufficient, and the internal rotation effect is likely to decrease.

[0056] In this specification, as shown in Fig. 6, the center of the patella of a specific mannequin 90 is defined as the knee center 99, and the length of a straight line L2 connecting the patella center 99 and the anterior superior iliac spine 100 is defined as the length L21 of the thigh 91. The distance D3 between the hem 22 and the knee center 99 is defined as the distance between the intersection of the straight line L2 and the hem 22 and the knee center 99 when the swimsuit 1 is put on the specific mannequin 90. In this embodiment, the distance D3 between the hem 22 and the knee center 99 may be set to 63.7 mm or more and 102.9 mm or less, for example, 66 mm.

[0057] FIG. 14 shows (a) a front view, (b) a side view, (c) a back view of the first ladies' swimsuit 101, and (d) a schematic diagram of the hem 122 of the first ladies' swimsuit 101 when worn without twisting. FIG. 15 shows (a) a front view, (b) a side view, (c) a back view of the second men's swimsuit 201, and (d) a schematic diagram of the hem 222 of the second men's swimsuit 201 when worn without twisting. FIG. 16 shows (a) a front view, (b) a side view, (c) a back view of the second ladies' swimsuit 301, and (d) a schematic diagram of the hem 322 of the second ladies' swimsuit 301 when worn without twisting. The configurations of the first ladies' swimsuit 101, the second men's swimsuit 201, and the second ladies' swimsuit 301 will be described with reference to FIG. 14 to FIG. 16.

[0058] As shown in FIG. 14, the first ladies' swimsuit 101 has a main body portion 102 having an upper garment portion 111 covering the upper body and a lower garment portion 112 covering the lower body, an anti-slip member 104 attached to the inner surface of the main body portion 102 to improve the adhesion and fit of the swimsuit 101 to the wearer's skin, a tape member 105 attached to the main body portion 2, and a mark P10 that guides the specified amount of twisting of the hem portion 22.

[0059] The main body 102 is made of a stretchable fabric similar to the first men's swimsuit 1. A chest lining 111a is arranged on the chest of the main body 102, a waist lining 112a is arranged around the waist, and an inner thigh lining 112b is arranged on the inner thigh side of the thigh 91. The first stretchable fabric (fabric in the a1 area of ​​FIG. 14) located on the thigh 91 of the main body 102 has a stress at 30% elongation similar to that of the first stretchable fabric of the first men's swimsuit 1, and the second stretchable fabric (fabric in the b1 area of ​​FIG. 14) has a stress at 30% elongation similar to that of the second stretchable fabric of the first men's swimsuit 1. The main body 102 has a non-slip member 104 bonded to the hem 122, an inner thigh tape 152 bonded to the inner thigh line 125, and a back tape 153 bonded to the back side. The back tape 153 is provided on the inner surface of the main body portion 102 and has a first back tape 153a extending vertically from the waist portion 121 to the hem portion 122, and a second back tape 153b branching off from the middle position of the first back tape 153a and connected to the inner thigh tape 152.

[0060] The first back tape 153a is disposed at a position corresponding to the hamstrings of the wearer 9 in the widthwise center of the thighs 91. Each second back tape 153b is disposed so as to cross the first back tape 153a near the lower end of the buttocks 97 and wrap around the thighs 91 inward in the widthwise direction while facing downward. The lower end of the second back tape 153b is connected to the inner thigh tape 152 at the crotch. In other words, the first women's swimsuit 101 is not provided with side tapes 51.

[0061] The ratio (amount of twist) of the distance D11 from the mark P10 to the inner thigh point P12 of the wearer 9 to the circumference D10 of the hem part 122 is set to 11.7% or more and 23.4% or less. The inner thigh point P12 is set by putting the first ladies' swimsuit 101 on a specific mannequin (a mannequin manufactured by Nanasai Co., Ltd.: WD-20A (ladies')). The amount of twist of the first ladies' swimsuit 101 is greater than that of the first men's swimsuit 1. The first ladies' swimsuit 101 does not have side tapes 51, so the amount of twist tends to be greater than that of the first men's swimsuit 1. On the other hand, the first ladies' swimsuit 101 has an upper garment part 111, so the length of the thigh part 91 in the body length direction is longer than that of the first men's swimsuit 1, and the area of ​​the fabric that is twisted is larger. As a result, when the swimsuit 101 is worn, if the hem 122 is twisted, the hem 122 is twisted from the waist portion above the anterior superior iliac spine, so that the internal rotation support function of the fabric can be effectively exhibited. The method of setting the amount of twisting will be described in detail in the examples.

[0062] The ratio of the distance D103 between the hem 122 of the swimsuit 1 and the knee center 99 to the length L121 of the thigh 91 is set to, for example, 18.1%. In this embodiment, the distance D103 between the hem 22 and the knee center 99 is set to, for example, 85 mm.

[0063] As shown in FIG. 15, the second men's swimsuit 201 has a main body portion 202, an anti-slip member 204 attached to the inner surface of the main body portion 202 to improve the adhesion and fit of the swimsuit 201 to the wearer's skin, a tape member 205 attached to the main body portion 202, and a mark P20 that guides the specified amount of twisting of the hem portion 222.

[0064] The main body 202 is made of a stretchable fabric similar to the first men's swimsuit 1. A waist lining 212a is arranged around the waist of the main body 202. In other words, no lining is arranged in any area other than the waist. The first stretchable fabric located on the front side of the thigh 91 and the second stretchable fabric located on the back side, which constitute the outer fabric of the main body 202, are made of a single continuous piece of fabric. The first stretchable fabric (the fabric in the area a2 in FIG. 15) and the second stretchable fabric (the fabric in the area b2 in FIG. 15) have a stress at 30% elongation similar to that of the first stretchable fabric of the first men's swimsuit 1. In the main body 202, the anti-slip member 204 is adhered to the waist 221 and the hem 222, and the crotch tape 252 is adhered to the inner thigh line 225. In other words, the first men's swimsuit 201 does not have the side tape 51 and the back tape 53.

[0065] The ratio (amount of twist) of the distance D21 from the mark P20 to the inner thigh point P22 of the wearer 9 to the circumference D20 of the hem 222 is set to 14.3% or more and 28.6% or less. The inner thigh point P22 is set by putting the second men's swimsuit 201 on a specific mannequin (mannequin manufactured by Nanasai Co., Ltd.: MD-20A (men's)) in the same manner as the first men's swimsuit 1. The amount of twist of the second men's swimsuit 201 is larger than that of the first men's swimsuit 1 and the first women's swimsuit 101. The second men's swimsuit 201 does not have the side tape 51, so the amount of twist tends to be larger than that of the first men's swimsuit 1. Furthermore, the second men's swimsuit 201 cannot expand the area of ​​the fabric to be twisted like the first women's swimsuit 101, so the amount of twist is set larger than that of the second women's swimsuit 101. The method of setting the amount of twist will be described in detail in the embodiment.

[0066] The ratio of the distance D203 between the hem 222 of the swimsuit 1 and the knee center 99 to the length L221 of the thigh 91 is set to, for example, 15.9%. In this embodiment, the distance D203 between the hem 222 and the knee center 99 is set to, for example, 78 mm.

[0067] As shown in FIG. 16, the second women's swimsuit 301 has a main body portion 302 having an upper garment portion 311 covering the upper body and a lower garment portion 312 covering the lower body, an anti-slip member 304 attached to the inner surface of the main body portion 302 to improve the adhesion and fit of the swimsuit 301 to the wearer's skin, a tape member 305 attached to the main body portion 302, and a mark P30 that guides the specified amount of twisting of the hem portion 322.

[0068] FIG. 17 is a development diagram showing the second ladies' swimsuit 301 in a developed state. As shown in FIG. 17, the main body 302 is made of a stretchable fabric, similar to the first men's swimsuit 1. A chest lining 311a is arranged in the chest of the main body 302, and a waist lining 312a is arranged around the waist. The first stretchable fabric located on the front side of the thigh 91 and the second stretchable fabric located on the back side, which constitute the outer fabric of the main body 302, are made of a single continuous piece of fabric. The first stretchable fabric (the fabric in the a3 region of FIG. 16) and the second stretchable fabric (the fabric in the b3 region of FIG. 16) have a stress at 30% elongation similar to that of the first stretchable fabric of the first men's swimsuit 1. The main body 302 is made of a stretchable fabric, similar to the first men's swimsuit 1. The anti-slip member 304 is adhered to the waist portion 321 and the hem portion 322, and a crotch tape 352 is adhered to the inner crotch line 325. The second ladies' swimsuit 301 is not provided with the side tapes 51 and the back tape 53.

[0069] The ratio (amount of twist) of the distance D31 from the mark P30 to the inner thigh point P32 of the wearer 9 to the circumference D30 of the hem 322 is set to 11.55% or more and 23.1% or less. The inner thigh point P32 is set by putting the second women's swimsuit 301 on a specific mannequin (mannequin manufactured by Nanasai Co., Ltd.: WD-20A (women's)) in the same manner as the first women's swimsuit 101. The amount of twist of the second women's swimsuit 301 is roughly the same as that of the first women's swimsuit 101. The second women's swimsuit 301, like the first women's swimsuit 101, does not have side tapes 51, so the amount of twist tends to be greater than that of the first men's swimsuit 1. On the other hand, since the second women's swimsuit 301 has the upper garment portion 311, the length in the body length direction at the thigh portion 91 is longer than that of the first men's swimsuit 1, and the area of ​​the fabric that is twisted is larger. As a result, when the swimsuit 301 is worn and the hem 322 is twisted, the hem 322 is twisted from the waist portion above the anterior superior iliac spine, so that the internal rotation support function of the fabric can be effectively exhibited. The method of setting the amount of twisting will be described in detail in the examples.

[0070] The ratio of the distance D303 between the hem 322 of the swimsuit 301 and the knee center 99 to the length L321 of the thigh 91 is set to, for example, 20.9%. In this embodiment, the distance D303 between the hem 322 and the knee center 99 is set to, for example, 98 mm.

[0071] Here, the relationship between the configuration and the amount of twist of the first men's swimsuit 1, the first women's swimsuit 101, the second men's swimsuit 201, and the second women's swimsuit 301 will be summarized below.

[0072] In the first men's swimsuit 1 having side tapes 51, where the stress at 30% elongation is greater on the inner thigh on the back side (area b in FIG. 1) than on the outer thigh on the front side (area a in FIG. 1), the predetermined twist amount at which no wrinkles occur when the hem part 22 is twisted when worn is 21.6%. The ratio of the distance D1 from the mark P to the inner thigh point P2 of the wearer 9 to the circumference D of the hem part 22 of the first men's swimsuit 1 (hereinafter also referred to as the "twist amount") is set to be 10.8% or more and 21.6% or less.

[0073] In a first women's swimsuit 201 in which the stress at 30% elongation is greater on the inner thighs on the back side (area b1 in FIG. 14) than on the outer thighs on the front side (area a1 in FIG. 14), and which has an upper garment part 111 covering the upper body and a lower garment part 112 covering the lower body, the predetermined twist amount at which no wrinkles occur when the hem part 122 is twisted and worn is 23.4%. The twist amount of the first women's swimsuit 101 is set to be 11.7% or more and 23.4% or less.

[0074] In the second men's swimsuit 201, which has a predetermined tensile stress at the outer thighs on the front side (area a2 in FIG. 15) and the inner thighs on the back side (area b2 in FIG. 15) and does not have side tapes, the predetermined twist amount at which no wrinkles occur when the hem 222 is twisted and worn is 28.6%. The twist amount of the second men's swimsuit 201 is set to 14.3% or more and 28.6% or less.

[0075] In second ladies' swimsuit 301, in which the stress at 30% elongation is set to a predetermined tensile stress in the outer thighs on the front side (area a3 in FIG. 16) and the inner thighs on the back side (area b3 in FIG. 16), and which has upper garment part 311 covering the upper body and lower garment part 312 covering the lower body, the predetermined twist amount at which no wrinkles occur when bottom hem 322 is twisted and worn is 23.1%. The twist amount of second ladies' swimsuit 301 is set to be 11.55% or more and 23.1% or less.

[0076] When twisting the hem portions 22, 122, 222, 322 of the first men's swimsuit 1, the first women's swimsuit 101, the second men's swimsuit 201, and the second women's swimsuit 301 to align the markings P, P10, P20, P30 with the inner thigh points P2, P12, P22, P32, a wearing error of about 1 cm may occur in the forward and backward directions of the twisting direction around the inner thigh points P2, P12, P22, P32; however, even when such a wearing error occurs, the effect of internal rotation can be achieved. EXAMPLES

[0077] The swimsuits of the comparative example and the example were subjected to evaluation tests for sensory evaluation, swimming efficiency evaluation, and swimming speed evaluation. The measurement results and evaluation test results are shown in Table 1.

[0078] Comparative Example 1 is a state in which a conventional swimsuit is worn without being twisted. Comparative Example 2 is a state in which a swimsuit according to the present invention is worn with a twist that exceeds a predetermined amount. Example 1 is a state in which a swimsuit according to the present invention is worn with a twist that is 50% of the predetermined amount. Example 2 is a state in which a swimsuit 1 according to the present invention is worn with a twist that is a predetermined amount.

[0079] In Comparative Example 2, Example 1 and Example 2, four types of swimsuits according to the present invention were used: a first men's swimsuit 1 shown in Figure 1, a first women's swimsuit 101 shown in Figure 14, a second men's swimsuit 201 shown in Figure 15, and a second women's swimsuit 301 shown in Figure 16.

[0080] The predetermined amount of twisting is different for each swimsuit (first men's swimsuit 1, first women's swimsuit 101, second men's swimsuit 201, second women's swimsuit 301). In other words, a suitable amount of twisting is set for each swimsuit. The method for setting each predetermined amount of twisting was determined by having multiple subjects (20 male and female university students) wear the swimsuit according to the present invention while twisting it, and evaluating the comfort (wearability) of the swimsuit.

[0081] Specifically, the predetermined twist amount for each of the first men's swimsuit 1, the first women's swimsuit 101, the second men's swimsuit 201, and the second women's swimsuit 301 is a twist amount that generates an internal rotation support force while not causing a deterioration in comfort, such as the generation of large wrinkles, by twisting and wearing each swimsuit. In this embodiment, large wrinkles that occur when the swimsuit is twisted and worn are, for example, wrinkles that cause resistance to running water while swimming, and are generally preferably 3 mm or less, and in this embodiment, wrinkles that protrude 2 mm or more from the surface of the swimsuit when worn.

[0082] The predetermined twist amount in each swimsuit is set to 21.6% for the first men's swimsuit 1, 23.4% for the first women's swimsuit 101, 28.6% for the second men's swimsuit 201, and 23.1% for the second women's swimsuit 301. In other words, each twist amount is the ratio of the distance D1, D11, D21, D31 from the mark P, P10, P20, P30 to the inner thigh points P2, P12, P22, P32 of the wearer to the circumference D, D10, D20, D30 of the hem part 22, 122, 222, 322 in the respective wearing states, so each mark P, P10, P20, P30 is located at a distance D1, D11, D21, D31 (each circumference D, D10, D20, D30 x each twist amount) from each inner thigh point P2, P12, P22, P32.

[0083] The sensory evaluation of wearability was carried out by subjects (20 male and female university students) who wore the swimsuits of Comparative Example 1, Comparative Example 2, Example 1, and Example 2 in each wearing method and evaluated the comfort of wearing them. More specifically, they were asked to evaluate the swimsuits as unsuitable (x) if they caused large wrinkles when worn.

[0084] Swimming efficiency was evaluated based on the average value of Strouhal number St during full-power dolphin kicks by subjects wearing the swimsuits of Comparative Example 1, Example 1, and Example 2 in the respective wearing manners. The Strouhal number was calculated using the following formula. The Strouhal number St is a dimensionless number obtained by standardizing the kick width A by the ratio of the average swimming speed U to the kick frequency f. It is said that the lower the value of the Strouhal number St, the higher the efficiency.

[0085]

number

[0086] In the swimming efficiency evaluation, one cycle of the underwater dolphin kick was defined as the time from when the toe reached the highest point in the vertical direction until it reached the next highest point. Data from 10 consecutive kick cycles was used for the analysis. Kick width A and kick frequency f were calculated from the toe coordinate data. Kick width A was defined as the vertical distance from the highest point to the lowest point of the toe in one kick cycle, and kick frequency f was defined as the reciprocal of the time required for one kick cycle.

[0087] The swimming speed evaluation was calculated by averaging the swimming speeds measured by subjects wearing the swimsuits of Comparative Example 1, Example 1, and Example 2 in each wearing manner while swimming 15 m using full-power dolphin kicks.

[0088] [Table 1]

[0089] As is clear from Table 1, if the predetermined twist amount is exceeded as in Comparative Example 2, the wearability is likely to deteriorate. More specifically, in Comparative Example 2, the excessive twisting causes uneven pressure and discomfort when worn. In addition, excessive internal rotation support inhibits the wearer's movement toward the external rotation side. Furthermore, large wrinkles are formed in the swimsuit, which creates resistance. For Comparative Example 1, Example 1, and Example 2, good wearability is obtained. From the results in Table 1, it is preferable to set the predetermined twist amount of the swimsuit according to the present invention to the upper limit value of the twist amount. Note that, for Comparative Example 2, which was rated as × for wearability, swimming efficiency and swimming speed were not evaluated.

[0090] The results of the evaluation tests for swimming speed and efficiency generally showed the same tendency, and in Examples 1 and 2, in which the swimsuits were worn with a predetermined twist amount, the swimming speed and efficiency were improved compared to Comparative Example 1. In particular, in Example 2, the swimming efficiency improved by 3% and the swimming speed improved by 2%. Based on this result, it is preferable to set the twist amount that is 50% of the predetermined twist amount as the lower limit of the twist amount.

[0091] The swimsuit 1 according to this embodiment has the following advantages.

[0092] (1) The method of wearing swimsuit 1 is a method of wearing swimsuit 1 which is made of stretchable fabric that covers at least a part of the lower body from the vicinity of waist 92 and has a predetermined wearing pressure, and which is worn by twisting hem portion 22 of swimsuit 1 so that mark P indicating the amount of twist provided on swimsuit 1 is located at a predetermined position.

[0093] According to this configuration, the swimsuit 1 having a predetermined pressure can be appropriately twisted by the mark P indicating the amount of twisting, so that a desired twisting force can be generated. As a result, for example, a desired support force can be easily applied to the area from the waist 92 to the knees 98 of the wearer 9 where the swimsuit 1 comes into contact, so as to support the hip joints 93.

[0094] (2) The swimsuit 1 has a hem 22 through which the legs are inserted, and the hem 22 is provided with a hem tape 42 that prevents the hem 22 from slipping relative to the thighs 91. For example, if the hem 22 is twisted when worn, and slippage occurs between the hem 22 and the wearer 9, it becomes difficult to maintain the twisted state of the hem 22 relative to the waist 21 when the hem 22 is twisted and worn, and the support force in the inward rotation direction becomes difficult to apply. In contrast, by preventing the hem 22 from slipping relative to the wearer 9, the hem 22 can be easily fixed in a twisted state relative to the waist 21. In addition, in this embodiment, the hem tape 42 is made of a silicone-attached tape to prevent slippage relative to the wearer's skin surface, so that the hem 22 does not return to its original position even when twisted, making it easy to exert the inward rotation function.

[0095] (3) The swimsuit 1 has a waist portion 21 provided at the upper edge and positioned at the waist portion 92 of the wearer 9, and the waist tape 41 is arranged on the waist portion 21 to suppress the slippage of the waist portion 21 relative to the waist portion 92. According to this configuration, the waist portion 21 is in close contact with the skin of the wearer 9, and the slippage of the waist portion 21 relative to the wearer 9 is suppressed. More specifically, if slippage occurs between the waist portion 21 and the hem portion 22 and the wearer 9, when the hem portion 22 is twisted and worn, it becomes difficult to maintain the twisted state of the hem portion 22 relative to the waist portion 21, and it becomes difficult to apply a support force in the inward rotation direction. In contrast, the slippage of the waist portion 21 relative to the waist portion 92 is suppressed, so that the hem portion 22 can be twisted with the waist portion 21 fixed. In addition, in this embodiment, the waist tape 41 is made of a silicone-attached tape to prevent slippage with the wearer's skin surface, like the hem tape 42, so that the slippage of the waist portion 21 is suppressed when the hem portion 22 is twisted, and the inward rotation function is easily exhibited.

[0096] (4) The twist amount is set to 50% or more of a predetermined twist amount at which no wrinkles are generated when the hem portion 22 is twisted and worn, and to be equal to or less than the predetermined twist amount. The predetermined twist amount is the limit of the twist amount at which no wrinkles are generated when the swimsuit is twisted and worn, in other words, the twist amount at which wearability is not hindered. According to this configuration, the twist amount can be set appropriately, so that the inward rotation effect can be obtained more effectively. Specifically, when the twist amount is less than 50% of the predetermined twist amount, the inward rotation effect is difficult to obtain. On the other hand, when the twist amount exceeds the predetermined twist amount, the swimsuit is likely to wrinkle, which causes resistance to running water. In addition, excessive twisting can easily cause uneven pressure, which can cause discomfort to the wearer, or the effect of inward rotation can become too large, which can excessively inhibit movement.

[0097] (5) The mark P may be constituted by an inner thigh line 25, for example, the inner thigh line 25 being inclined so as to be positioned on the front side of the wearer 9 toward the hem portion 22, and the desired amount of twisting can be obtained simply by twisting the hem portion 22 to position it on the inner thigh of the wearer 9.

[0098] (6) When the swimsuit 1 is put on a mannequin without twisting, the ratio of the distance D3 from the center 99 of the patella to the hem 22 to the length L21 of the thigh 91 of the mannequin is 13% or more and 21% or less. According to this configuration, even when the mark P is the crotch line 25, the length of the crotch line 25 is set so that the lower end of the crotch line 25 after twisting is positioned at a desired vertical position, so that the crotch line 25 after twisting is prevented from becoming excessively long.

[0099] (7) The swimsuit 1 is provided with side tapes 51 located on the outer side in the width direction, extending from the waist portion 21 to the hem portion 22, and having curved portions 51c at portions corresponding to the wearer's greater trochanter 94. According to this configuration, when the swimsuit 1 is twisted and put on, the side tapes 51 are also twisted together. Therefore, the side tapes 51 act to turn the greater trochanter 94 inward, making it easier to internally position the hip joints 93 more effectively.

[0100] (8) The swimsuit 1 has a first back tape 53a which is strip-shaped and extends in the body length direction from each buttock 97 to the thigh 91, and which has a higher tensile stress than other parts, and a second back tape 53b which intersects with the first back tape 53a near the lower end of the buttocks 97 and extends widthwise inward toward the hem 22, and which has a higher tensile stress than other parts.

[0101] With this configuration, the first back tape 53a and the second back tape 53b tend to pull the backs of the thighs 91 upward when in a prone position, making it easier to maintain an efficient posture when kicking by moving the foot up and down while in a prone position.

[0102] (9) Since the lower portion 53d of the second back tape 53b wraps around to the front and the lower end is located near the lower end of the crotch line 25, the second back tape 53b intersecting the first back tape 53a tends to twist the crotch line 25 inward, making it easier to maintain the twisted state of the hem portion 22.

[0103] (10) The crotch portion 23, which corresponds to the crotch of the wearer 9 and is continuous with the inner thigh line 25, is provided with a rigidity reducing portion G that reduces the rigidity. With this configuration, even if the rigidity of the crotch portion 23 is increased by arranging a tape member for ensuring tear strength in the crotch portion 23, the rigidity of the crotch portion 23 can be reduced, and the hem portion 22 is easily twisted when worn in a twisted manner.

[0104] In this embodiment, an example has been described in which the mark P is formed by a bar tack, but this is not limited to this, and the mark P may be formed by the inner crotch line 25, or may be formed by painting, embroidery, revealing the backing material using a half laser, seam tape, etc.

[0105] The method of wearing the swimsuit of the present invention is not limited to the configuration of the above-mentioned embodiment, and various modifications are possible.

[0106] [Additional Note] The present disclosure includes the following aspects.

[0107] [Aspect 1] A method for wearing a swimsuit that is made of a stretchable fabric that covers at least a part of the lower body from the vicinity of the waist and has a predetermined pressure, A method of wearing the swimsuit by twisting the bottom of the swimsuit so that the mark on the swimsuit is positioned at a predetermined position.

[0108] [Aspect 2] A swimsuit used in the method for wearing the swimsuit according to embodiment 1, The swimsuit has a hem through which legs are inserted, A hem tape is disposed on the hem to prevent the hem from slipping relative to the leg. Swimsuit.

[0109] [Aspect 3] The swimsuit has a waist portion provided at an upper edge portion and positioned around the waist of a wearer, A waist tape is disposed on the waist portion to prevent the waist portion from slipping relative to the hips. 3. The swimsuit of embodiment 2.

[0110] [Aspect 4] The amount of twist is set to 50% or more of a predetermined amount of twist that does not cause wrinkles when the hem is twisted and worn, and to be equal to or less than the predetermined amount of twist. The swimsuit of embodiment 2 or embodiment 3.

[0111] [Aspect 5] The mark is composed of an inner thigh line. The swimsuit according to any one of aspects 2 to 4.

[0112] [Aspect 6] When the swimsuit is worn on a mannequin without twisting, the ratio of the distance from the center of the kneecap to the bottom hem to the length of the mannequin's thigh is 13% or more and 21% or less. The swimsuit of any one of claims 2 to 5.

[0113] [Aspect 7] The swimsuit is provided with side tapes located on the outer side in the width direction, extending from the waist portion to the hem portion and having curved portions at portions corresponding to the greater trochanter of the wearer. The swimsuit of any one of claims 2 to 6.

[0114] [Aspect 8] The swimsuit has a first back tape that extends along the body length direction from the left and right buttocks to the thighs and has a higher tensile stress than other parts, and a second back tape that intersects with the first back tape near the lower ends of the buttocks and extends toward the bottom hem so as to be positioned inward in the width direction and has a higher tensile stress than other parts. The swimsuit of any one of claims 2 to 7.

[0115] [Aspect 9] The second back tape has a lower portion that wraps around to the front and a lower end portion that is located near the lower end of the inner crotch line. 9. The swimsuit of embodiment 8.

[0116] [Aspect 10] The swimsuit has a crotch portion corresponding to the crotch portion of a wearer and continuing along an inner thigh line, The crotch portion is provided with a rigidity reducing portion that reduces rigidity. The swimsuit of any one of claims 2 to 9. [Explanation of symbols]

[0117] 1. Swimsuit 9. Wearer 21 Waist 22 Hem 23 Crotch area 25 Inner thigh line 42 Hem tape 41 Waist tape 51 Side Tape 51c Curved section 53a 1st back tape 53b 2nd back tape 53d lower part 91 Thigh 92 Lower back 94 Greater trochanter 97 Buttocks 99 Center of the Patella D3 Clearance G Rigidity reduction section L21 Length P Mark

Claims

1. A method for wearing a swimsuit that is made of a stretchable fabric that covers at least a part of the lower body from the vicinity of the waist and has a predetermined pressure, A method of wearing the swimsuit by twisting the bottom of the swimsuit so that the mark on the swimsuit is positioned at a predetermined position.

2. A swimsuit used in the swimsuit wearing method according to claim 1, The swimsuit has a hem through which legs are inserted, A hem tape is disposed on the hem to prevent the hem from slipping relative to the leg. Swimsuit.

3. The swimsuit has a waist portion provided at an upper edge portion and positioned around the waist of a wearer, A waist tape is disposed on the waist portion to prevent the waist portion from slipping relative to the hips.

3. The swimsuit according to claim 2.

4. The amount of twist is set to 50% or more of a predetermined amount of twist at which no wrinkles are formed when the hem is twisted and worn, and to be equal to or less than the predetermined amount of twist. The swimsuit according to claim 2 or 3.

5. The mark is composed of an inner thigh line. The swimsuit according to claim 2 or 3.

6. When the swimsuit is worn on a mannequin without being twisted, the ratio of the distance from the center of the patella to the bottom hem to the length of the thigh of the mannequin is 13% or more and 21% or less. The swimsuit according to claim 2 or 3.

7. The swimsuit is provided with side tapes located on the outer side in the width direction, extending from the waist portion to the hem portion and having curved portions at portions corresponding to the greater trochanter of the wearer.

4. The swimsuit according to claim 3.

8. The swimsuit has a first back tape that extends along the body length direction from the left and right buttocks to the thighs and has a higher tensile stress than other parts, and a second back tape that intersects with the first back tape near the lower end of the buttocks and extends toward the bottom hem so as to be positioned inward in the width direction and has a higher tensile stress than other parts. The swimsuit according to claim 2 or 3.

9. The second back tape has a lower portion that wraps around to the front and a lower end that is located near the lower end of the inner crotch line.

9. The swimsuit of claim 8.

10. The swimsuit has a crotch portion corresponding to the crotch portion of a wearer and continuing along an inner thigh line, The crotch portion is provided with a rigidity reducing portion that reduces rigidity. The swimsuit according to claim 2 or 3.

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