An article of footwear includes an upper, an outsole attached to the upper, and a midsole. The outsole is attached to the upper and includes a ground-engaging surface and an inner surface disposed on an opposite side of the outsole than the ground-engaging surface. The midsole includes a footbed and a bottom surface disposed on an opposite side of the midsole than the footbed and opposing the inner surface of the outsole to define a cavity therebetween. The article of footwear also includes a casing received within the casing and defining an interior void. The interior void contains a first quantity of particulate matter movable relative to the casing and a second quantity of particulate matter attached to the casing.

A pair of shoes that includes a left foot shoe and a right foot shoe. Each of the shoes include an upper shoe portion and a sole coupled to the upper shoe portion. The sole provides an athletic positioning of a left big toe area of the left shoe at a lower position than a left heel area of the left shoe and at a lower position than an outer small toe area of the left shoe and wherein, from an inner edge to an outer edge of the left shoe, the left heel area has substantially no slope.

Systems and methods are described for a shoe sole for relieving pressure from a wearer's metatarsal heads. In one aspect, a shoe sole comprises a shoe outer sole comprising a shaft region, a ball region, and a toe region. The shaft region underlies metatarsal shafts of the wearer and comprises a first lower surface, the ball region underlies metatarsal heads of the wearer and comprises a second lower surface, and the toe region underlies phalanges of the wearer and comprises a third lower surface. The second lower surface is raised relative to the first lower surface and the third lower surface.

Aspects relate to a portable device that may be used to identify a critical intensity and an anaerobic work capacity of an individual. The device may utilize muscle oxygen sensor data, speed data, or power data. The device may utilize data from multiple exercise sessions, or may utilize data from a single exercise session. The device may additionally estimate a critical intensity from a previous race time input from a user.

An elongate strap support system for anatomical support, pain reduction, or therapeutic treatment includes a package containing a first elongate strap support and at least one additional elongate strap support. In one example, the first elongate strap support includes a woven fabric support layer including synthetic fibers. The woven fabric is shaped so as to form an elongated strap with rounded portions. The woven fabric is substantially resistant to stretching in one direction under such test conditions as those specified in ASTM D3759. The first elongate strap support additionally includes an adhesive layer on the support layer for adhesive attachment of the woven fabric support layer to an outer skin surface of a body and a removable cover layer on the adhesive layer.

A midsole or insole device for a shoe includes a first variable stimulation mechanism positioned to interface one of the metatarsal heads and the heel and a second variable stimulation mechanism positioned to interface a lateral aspect of the foot between the fifth metatarsal head and the heel. During gait-related activities, the first variable stimulation mechanism produces stimulus of an intensity greater than the second variable stimulation mechanism. At least one of the first variable stimulation mechanism and the second variable stimulation mechanism comprises two bonded layers including a resilient stimulating upper layer and a less resilient stimulus-enhancing lower layer. The upper layer includes a plurality of holes that pass through the entirety of the upper layer, and the lower layer includes a plurality of equally spaced upwardly facing projections aligned substantially perpendicular to an upper surface of the upper layer.

A method for manufacturing stretch resistant plantar fascia support system is provided. The stretch resistant plantar fascia support system is adhesively applied to the foot of a patient for providing relief from plantar fasciitis. A portion of the stretch resistant plantar fascia support system is adhesively attached to the bottom surface of the foot for reducing stress on the plantar fascia.

Aspects relate to a portable device that may be used to identify a critical intensity and an anaerobic work capacity of an individual. The device may utilize muscle oxygen sensor data, speed data, or power data. The device may utilize data from multiple exercise sessions, or may utilize data from a single exercise session. The device may additionally estimate a critical intensity from a previous race time input from a user.

An orthotic support assembly includes a first orthotic support that is attachable to a sole of a shoe to abut a support surface upon which a user is walking. The first orthotic support has a rounded profile thereby facilitating the sole of the shoe to roll on the first orthotic support when the user walks. A second orthotic support is attachable to the sole of the shoe and the second orthotic support has a rectilinear profile to inhibiting the sole of the shoe from rocking on the first orthotic support when the user walks. A third orthotic support is attachable to the sole of the shoe and the third orthotic support has a trapezoidal profile. In this way the sole of the shoe is oriented level on the ground to facilitate a user with an unstable foot to walk in a level orientation.

A Sandal with Heel Strap with several orthotic benefits is provided. The sandal has a unique combination of features what will be useful for the treatment and prevention of plantar fasciitis. The Sandal with Heel Strap has a medial split in the medial heel section of the sole. The medial split is designed so that it absorbs more energy than the other parts of the heel and promotes a lateral to medial rotation of the heel portion during the wearer's gait. In a preferred embodiment, the sandal will include a rocker bottom sole and raised bed for the big toe that begins its rise at the metatarsophalangeal joint. In an additional preferred embodiment, the sole of the sandal will also include a metatarsal bar that supports the traverse arch and an upward bend that begins to rise from the sole at a point just forward of the end of the medial split and intersects with the metatarsal bar.