Shoulder injuries are common in swimmers due to high training volume, postural issues resulting from improper position of joints in relation to one another due to imbalance in strength and flexibility, and technical flaws, such as improper movements in the stroke patterns. Addressing these issues is crucial in reducing the likelihood of injury as well as improving performance. Research shows that the majority of injuries take place during training, frequently from overuse, due to the repetitive nature of the strokes, technical issues, magnified by fatigue, and anatomical variants such as shoulder instability. Training in a fatigued state is necessary to increase endurance and attain beneficial training volume, however the degradation of stroke technique from fatigue can cause poor posture and improper muscle engagement, leading to increased risk for injury or agitating healing injuries.
Swimwear companies seek credibility and public exposure by focusing their research and development on innovation of technical suits worn in competition rather than during training. However, these competition suits are reserved for racing because they are uncomfortable to wear for long durations, expensive, and the fabric integrity does not withstand chlorine well. The design focus for training suits is for comfort and longevity, but fails to provide technical advantages and training benefits for the swimmer.
Embodiments of the present invention are directed to swimwear garments designed for training (non-competition) applications. The swimwear garment helps to improve form and positioning in the water to reduce injuries, as well as assists injured swimmers recover from injuries already sustained, such that the swimmers can continue training while recovering from injury. More specifically, swimwear garments according to the embodiments of the invention are focused on addressing injury risk factors by promoting core muscle activation and raising body position in the water and improving shoulder posture to help reduce the possibility of injury and to provide a garment for recovering swimmers to assist posture and correct swimming form.
Swimmers often have a forward-slumped posture due to an imbalance in anterior and interior shoulder strength, which increases the load on the shoulder during swimming. Anatomical variations, such as excessive laxity and lack of anterior flexibility are correlated to further increase in shoulder pain. Butterfly, backstroke, and freestyle swimming stokes involve similar shoulder movements, so many swimmers suffer from similar injuries despite specializing in different events. Overuse is difficult to control because it is inherent to the training regimen and the fitness demands of the sport. However, posture and body position can be manipulated through a garment, alleviating or minimizing the negative effects of high-volume training demands.
In one aspect, the swimwear garment can go over a traditional swimming suit or training suit. It can also be worn directly against the skin. The swimwear garment can be designed to be very tight on the wearer when it is dry, such that it can be put on when dry, but once the garment and the wearer enter the water, the garment fits properly, rather than expanding to be too large in the water.
In another aspect, the swimwear garment includes a base layer covering at least part of the upper body of the wearer. The base layer may be of one material or may include at least two different fabric types. One of the fabric types may be a compressive fabric, and can be similar to a traditional racing suit or swimsuit fabric. Other fabrics which satisfy similar compressive and stretch features as described herein, are also contemplated. The compressive fabric can cover areas of the chest and arms. These are the primary areas where a swimsuit generally provides the most compression on the swimmer's muscles, as described herein. The compressive fabric should be capable of stretching, but not at the expense of providing compression on the swimmer's body.
The base layer of the garment may also include a second fabric type which is less compressive than the compressive fabric. In some embodiments this fabric is a breathable mesh fabric, such as an athletic mesh or performance nylon spandex power mesh. The mesh fabric can be used for areas of the swimming garment where compression is less desirable, such as areas of the back. Using mesh where compression is not necessary allows for breathability of the garment and reduces weight.
In another aspect of the swimwear garment, one or more elastic straps (or strips) are connected to the swimwear garment over the shoulders and upper back to add additional support and posture control to the shoulders. The straps support the shoulders in a neutral position and reinforce habits of proper posture, especially when fatigue increases the forward-slumping of the shoulders. In a swimmer with rolled forward, rounded shoulders, lifting the arm can cause impingement. This is significant because the swimming strokes all have an overhead catch phase, in which the arm is generating propulsion to move the swimmer forward in the water. These elastic straps target specific areas to control and support movements, and can be based on Kinesio taping methods. The elastic shoulder strap placement can also or alternatively be based on Morrisey's clinical taping methods. The shoulder strips can be specifically placed to run from the anterior shoulder to the center of the back, to apply force to pull the protracted shoulders back from a rounded position into a neutral position. These elastic straps can be made from waistband elastic, for example, or similar material.
In another aspect of the swimwear garment, panels on the front and back of the garment are used to provide buoyancy and core compression. The panels can be made from a buoyant material, such as neoprene or other buoyant material. The panels can be positioned around the swimmer's core muscles to add buoyancy to the swimmer and address fatigue-related body position changes due to slowing of the kicking motion and by the swimmer dropping their hips.
The panels can also provide additional tightness and compression to support certain areas of the swimmer, as the paneled areas stretch less than the areas with only the base shell fabrics. The panels act to counter the effect of fatigue-related issues, such as lack of core engagement. A lack of core engagement and inadequate rotation while swimming are also linked to improper use of muscles. Core compression with the panels can promote increased awareness of the muscles and to counteract the injury risk factor. Such core awareness improves rotation, which lessens the load on the shoulders and increases engagement between the swimmers core and the kick aspect of their swimming stroke. While compression is desirable in certain areas of the body, it is desirable to avoid in other areas. For example, the panels can be positioned to avoid excessive compression of the rib cage and lung area, which could otherwise reduce the swimmers lung capacity and can impinge on natural breathing patterns.
In some aspects, the panels can also have one or more auxetic cuts or perforations. The auxetic cuts provide ease of movement and flexibility while maintaining compression. The auxetic cuts allow the neoprene or similar material of the panels to stretch and bend when the swimmer bends their core, such as during a flip turn or other swimming motion. These auxetic cuts provide the benefit of flexibility without compromising the compression provided by the panels. The auxetic cuts or perforations also allow flexibility for ease of donning and doffing the suit. Such ease of removal can be particularly advantageous for fatigued or injured swimmers who have limited flexibility or movement related pain. The auxetic cuts can be of various designs to emphasize stretching in particular directions, and can be of varying depth through the panels, as can be understood of one skilled in the art.
The terms “invention,” “the invention,” “this invention” and “the present invention” used herein are intended to refer broadly to all of the subject matter of this specification and the claims below. Statements containing these terms should not be understood to limit the subject matter described herein or to limit the meaning or scope of the patent claims below.
The term “compressive fabric” as used herein means a fabric type intended to apply pressure or tightness to the area of the body which it covers. Conversely, the term “non-compressive fabric” means a fabric which does not have the intended quality of applying pressure or tightness to the area of the body which it covers, but should be understood to mean that some pressure may be applied as is inherent with fabric generally. Further “compressive fabric” and “non-compressive fabric” can be defined as degrees of pressure or force applied to the wearer of the garment in relation to each other, such that the non-compressive fabric applies less force on the wearer than the compressive fabric.
Embodiments of the invention covered by this patent are defined by the claims below, not this summary. This summary is a high-level overview of various aspects of the invention and introduces some of the concepts that are further described in the Detailed Description section below. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used in isolation to determine the scope of the claimed subject matter. The subject matter should be understood by reference to the entire specification of this patent, all drawings and each claim.
The features and components of the following figures are illustrated to emphasize the general principles of the present disclosure. Corresponding features and components throughout the figures can be designated by matching reference characters for the sake of consistency and clarity.
The following detailed description of example implementations refers to the accompanying drawings. The same reference numbers in different drawings may identify the same or similar elements. In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide an understanding of various embodiments of the subject matter. It will be evident, however, to those skilled in the art, that embodiments of the inventive subject matter may be practiced without these specific details. In general, well-known structures and techniques are not necessary shown in detail.
The need for improved swimwear has existed for some time. For example, throughout the 20th century, rapid development and advancement in synthetic fibers, such as nylon and polyester, have encouraged a change in swimwear from traditional natural fibers to more water resistant and practical synthetic fabric. Development and advancement in the field was driven by not only a desire for comfort and fashion, but performance in limiting drag in the water and functionality in durability and water shedding ability.
In general terms, the inventor found that swimsuits to be worn on a regular basis, outside of competition events, lack sophistication and technical innovation which can assist the swimmer in training gains and increased performance. As the vast majority of a swimmer's routine swimming is spent in training swimwear, rather than in a racing suit, the inventor sought to develop advanced training garments to address training injury risk factors. The swimwear is designed to assist the swimmer develop and improve their form in their (often daily) training routines, while also providing a garment which minimizes drag in the water, avoids complexity or discomfort in donning and doffing, and is durable to chlorine and sun exposure.
While the various embodiments of swimwear garments shown herein are generally shown as being unisex and of particular sizing ratios, it should be understood that the swimwear garments can also be specifically shaped and designed for a particular gender, such as with adjusted hip and chest dimensions. Further, as each swimmer can have different body figures, varying sizes of the swimwear shown can be developed to specifically and more precisely fit a particular body shape.
The various embodiments of swimwear garments herein show figures which end on or near the waist of the swimmer. It may be advantageous to have a garment which ends at the waist to limit weight, drag, and complexity in putting on or taking off the garment. However, it should be understood that while the features of this garment are demonstrated as being only on the upper body, the garment could also extend around the torso or to the leg region.
The front section 110 of the base layer 102 is constructed from compressive fabric 104, covering the chest and shoulders of the wearer. The compressive fabric can have about a 70% stretch factor in the lengthwise direction (meaning a 10 inch long section could be stretched to 17 inches), and a 100% stretch factor in the crosswise direction. The compressive fabric can be made primarily of polyester, and optionally can also be made partially of spandex, preferably being about 90% polyester and about 10% spandex.
The back section 112 of the base layer 102 can be made at least primarily from non-compressive fabric 106. The non-compressive fabric can be made from at least nylon and spandex, preferably being made from a nylon-spandex blend of about 80% nylon and 20% spandex. Other fabrics which satisfy similar stretch features, as described, are also contemplated. The non-compressive fabric can additionally also allow for more leeway on sizing of the garment, as the flexibility of the non-compressive fabric can be more adaptable to varying body sizes and types. A suitable non-compressive or mesh fabric can have a stretch factor of about 70% in the grainline direction and 130% in the crosswise direction.
For ease of donning and doffing, the garment 100 can also be fitted with a zipper 130. As shown in
In one aspect, the swimwear garment 100 includes a plurality of elastic straps 120, for example interior elastic straps 120A and exterior elastic straps 120B. The elastic straps 120 span the shoulder region of the wearer. In general, the garment 100 will have equal number of elastic straps 120 on each side of the wearers body (each side of the wearers head) to apply equal compression and positioning on each shoulder muscle region. Preferably the straps can be wide waistband fabric, about 2 inches wide. The material of the elastic straps should stretch around 60% in the lengthwise direction. Once attached to the base layer of the suit, the combined base layer and elastic straps can stretch (in combination) about 40%-50%. It is shown herein that the garment 100 has two elastic straps on each side of the wearers body, discussed and shown as the interior elastic straps 120A and exterior elastic straps 120B. The interior elastic straps 120A attach to the front section 110 at the base of the shoulder or pectoral region. The interior elastic straps 120A then span over the tops of the wearer's shoulder region and towards the center of the spine.
To help secure the elastic straps 120 to the base layer 102 it can be beneficial to sew the ends of the elastic straps 120 to the panels 140 of the garment 100 or into the seams of the base layer 102. If the elastic straps 120 are not sewn into a seam or another feature of the garment 100 it can cause the area where it is secured to stretch away from the remainder of the garment 100. Because the elastic straps 120 are stretched when worn, if they are not secured to a panel 140 or a seam of the base layer 102, it may result in the base layer 102 to pull and ride in an uncomfortable position on the wearer, or otherwise shift in place. In the embodiment shown in
As shown in
When the wearer puts on the garment 100, the elasticity of the base layer 102 allows the base layer to stretch and fit tightly against the wearer. As the base layer 102 is stretched, the elastic straps 120 also stretch, and in so doing force is applied on the wearer. Based on the specific placement of the elastic straps 120, force is applied in predetermined and selected directions to improve the wearers posture and positioning while swimming. For example, as seen in
The desired amount of force applied to the shoulder can be determined based on the material selected for the elastic straps 120. A more resistive elastic material will push more strongly on the shoulder when worn by the wearer in comparison with a less resistive elastic material. The amount of force applied can also be varied by the length of the elastic straps when the garment 100 is manufactured. In some embodiments, for example, when the elastic straps 120 are attached to the garment 100, the elastic straps 120 are made shorter than the distance of the two points they are intended to attach. Thus, the elastic straps 120 are stretched when attached onto the garment 100, and thus the elastic straps are pre-stretched prior to being worn by the wearer. Therefore, once the wearer puts on the garment, the force applied to the shoulder will be both the pre-stretched force as well as the force added when the garment 100 is put on and the base layer 102 and elastic straps 120 are stretched further. Notably, manufacturing determinations can be made specifically for each of the elastic straps 120, such that more force is applied from the interior elastic straps 120A than the exterior elastic straps 120B, or vice versa. Such determinations may be appropriately made by a physical therapist or other sports trainer for best results for a particular wearer, or generally for a specific swimming event.
In some embodiments, to add additional comfort and support to the wearer, the elastic straps 120 may further include a protective coating covering at least the inside portion of the elastic straps 120, or preferably both sides of the elastic straps 120. Such a protective coating can, for example, be made from polyester and add additional comfort such that the elastic straps 120 do not rub or chafe the wearer. The protective coating may also have the added benefit of protecting the elastic straps 120 from wear and tear from use, and protect the elastic straps 120 from sun exposure.
In another aspect of the garment 100 shown in
To attach the panels 140 to the base layer 102 several stitching patterns can be used to sew the panels 140 to the base layer 102. The panels 140 can be sewn to the base layer at or near the panel edge 146. With larger panels, such as the back panel 140B, stitching can be added down the middle of the panel 140B to provide additional support and secure attachment to the base layer 102. When sewing the panels 140 to the base layer 102 the panels 140 are generally too thick to use a complex stitching type (such as a cover stitch). In some embodiments, a cover layer of compressive fabric 104 can be used for some or all of the panels 140 of the garment 100. In such embodiments, a section of compressive fabric 104 can be cut slightly larger than the panel 140 it is intended to cover. For example, the cover layer may be about an inch larger in all directions than the panel 140 it will cover. As shown in
In some embodiments, the panels 140 may further include auxetic cuts 150, which can be cut fully or partially into the material of the panels 140. The auxetic cuts 150 allow for increased motion and flexibility while maintaining the desired compression on the wearer. The auxetic cuts 150 may be a variety of shapes to accommodate different directions where increased flexibility and motion is required. The specifics of auxetic cuts are further provided regarding
The garment 100 may have abdomen panels 140A attached to the base layer 102 in the abdomen region of the front section 110. As shown in
Additionally, the garment 100 may have at least one back panel 140B attached to the back section 112 of the garment 100. The embodiment of
The back panel 140B shown in
The garment 100 may also include oblique panels 140C at the back hips of the wearer. The oblique panels 140C are approximately triangular in shape, for example spanning about 4.5 inches along the waist, 4 inches in height, and 5.75 inches on the hypotenuse side. The oblique panels 140C may further include a cover layer with a cover layer edge 148 extending slightly over the edges of the oblique panels 140C (as discussed for all panels 140 above). The oblique panels 140C provide additional buoyancy near the waist of the wearer and further help elevate the legs and pelvic region of the wearer in the water.
The oblique panels 140C could alternatively be removed and a back panel 140B could instead be used that covers the region of both the back panel 140B and the oblique panels 140C of
While it is discussed herein that the panels 140 and elastic straps 120 are secured on top of the base layer 102, it should be appreciated that the panels 140 and elastic straps 120 could be directly integrated into the base layer 102. To clarify for example, the base layer 102 could have holes cut to match the shape of each of the panels 140 such that the panels 140 are directly in contact with the skin of the wearer, rather than over the top of the base layer 102.
Referring now to
Having panels 140 overlapping the rib cage and lung area can have both advantages and disadvantages. Applying additional compression to the rib cage with the use of chest panels 140D can result in added weight and pressure against the lungs, which can impede natural breathing difficulty and breathing patterns. However, adding chest panels 140D to the garment 100 provides substantially increased buoyancy and can assist in raising the body of the wearer in the water. For example, such panels can provide increased buoyancy in the shoulder and chest region, raising a swimmers head and arms.
As chest size and shaping can vary substantially between swimmers, particularly with regard to men and women, a garment 100 having chest panels 140D may be particularly suitable for gender-specific garments. In the case of a garment 100 that is intended to be unisex, the chest panels 140D can result in a less flexible (or even rigid) structure in the chest region, which is less capable of tightly forming to the body shape of the wearer. With variance in chest size and shape, such as with a unisex garment, the suit may not fit as tightly against the body.
It is also contemplated that the chest panels 140D can be of varying shape and size and be positioned in higher or lower on the body. Further additional (and smaller) chest panels could be provided in place of the chest panels 140D shown. Having multiple chest panels 140D on each side of the wearer may allow sustained flexibility of motion and a maintained elasticity of the suit to fit the wearer's form.
In
In
Referring to
In
Raglan sleeves are a sleeve type, where the sleeve attaches to the front and rear sections of a shirt or other garment at a diagonal angle which spans all the way to the neck. Raglan sleeves, because the shoulder region has no seam running through it, allows freedom of motion in the shoulder region. Such a sleeve type is of particular benefit in the case of swimming due to the emphasis on shoulder motion and shoulder muscle development. The sleeves 108 are formed by cutting the compressive fabric 104 in a diamond-like shape. The sleeves are formed by sewing the fabric into a tube shape by attaching the underarm edges 302 together, by creating an underarm seam.
The structure of the base layer 102 is formed by sewing the side seams by sewing the front left edge 304 to the back left edge 306 and the front right edge 308 and the back right edge 310. In so doing, the left side of the front section 110A is connected with the left side of the back section 112 and the right side of the front section 110B is connected with the right side of the back section 112. Finally, the sleeves 108 are attached to the front section 110 and the back section 112 by sewing the raglan seams 312.
As shown in
With regards to the seams discussed in
It is also contemplated that similar cover stitching, such as a 4 thread or 6 thread cover stitch (stitch numbers 602 and 607 respectively). In addition, other durable stitch patterns could be used, such as a 4 or 5 thread safetystitch, or similar stitching pattern. While it is contemplated that a double sided stitch be used, a single sided stitch may also be used.
A 5 thread cover stitch provides several benefits over standard stitch patterns. In one aspect, the 5 thread cover seams are flat seams, compared to other seams which use extra fabric between the edge of the seam line and the edge of the fabric. The flat seams facing inside the suit help reduce chaffing on the wearer, and when facing outside (as they are double sided) the seam design minimizes drag in the water. In another aspect, 5 thread cover stitch provides maximum durability, as it is both strong but also flexible, allowing the fabric to stretch in use. of strength, durability, and comfort against the wearer's body. Additionally, due to the slim profile of the 5 thread cover stitch, the bulkiness, and therefore drag created in the water, will be limited.
Referring now to
Referring now to
The second row of images in
As can be seen, particularly in the second row of images of
Referring to
The descriptions above have concentrated on describing particular aspects and features. It should be understood, however, that various aspects and features may be combined whenever practical without departing from the spirit and scope of the invention. That is, particular aspects and features described above with reference to one embodiment may be incorporated into one or more other embodiments, even though such alternate embodiments are not specifically shown.
It is understood that the examples and embodiments described herein are for illustrative purposes and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application and the scope of the appended claims.