Abstract: Shoes and/or shoe elements facilitate natural foot motion and/or reduce forces tending to fight natural foot motion. In at least some such structures, a wearer's heel is secured to the hindfoot region of a shoe (e.g., by a strap system) in a manner that permits heel/forefoot rotation and that allows the lower leg to remain straight. In other structures, a shoe can include a heel supporting component that is separate from a midsole component, and this heel supporting component can move toward the lateral side and/or medial side of the shoe along an interface between the heel supporting component and the midsole component. Other suitable shoe and shoe component structures also are described.

Abstract: A heel cup formed from a flexible material is located under the heel region of an upper portion of an article of footwear. Lateral and medial counters extend upward from the heel cup on the lateral and medial sides, with the medial counter having a height less than that of the lateral counter, and with a rear edge of the heel cup being lower than the lateral and medial counters. A rear strap extends upward around the lateral counter and around the Achilles tendon of the wearer, and is secured to a location on the upper that is forward of the wearer's ankle. During cutting movements in which the article is worn on the outside foot, tilting of the wearer foot and ankle toward the medial side pulls the strap and causes the lateral counter to conform to and support the wearer heel.

Abstract: A heel cup formed from a flexible material is located under the heel region of an upper portion of an article of footwear. Lateral and medial counters extend upward from the heel cup on the lateral and medial sides, with the medial counter having a height less than that of the lateral counter, and with a rear edge of the heel cup being lower than the lateral and medial counters. A rear strap extends upward around the lateral counter and around the Achilles tendon of the wearer, and is secured to a location on the upper that is forward of the wearer's ankle. During cutting movements in which the article is worn on the outside foot, tilting of the wearer foot and ankle toward the medial side pulls the strap and causes the lateral counter to conform to and support the wearer heel.

Abstract: An article of footwear includes a sole assembly with a rib that is resiliently flexible, and the rib has a longitudinal axis and a transverse axis. The transverse axis extends at an acute angle relative to the ground surface, and the rib includes a first longitudinal end, a second longitudinal end, and a middle portion disposed between the first and second longitudinal ends. A height of the first and/or second longitudinal end is greater than that of the middle portion. The rib is operable to axially support a first force applied substantially along the acute angle relative to the ground surface, and the rib transverse axis remains substantially straight in response to the first force. The rib resiliently bends about the rib longitudinal axis in response to a second force applied substantially normal to the ground surface to make the rib transverse axis non-linear.

Abstract: Non-video game computer user interfaces utilize human foot action to generate input for controlling the interface (e.g., a graphical user interface). Computer systems that use such input may include: (a) at least one input system including one or more sensing devices for sensing action by one or more feet; (b) a data transmission system for transmitting the sensed foot action to (c) a processing system that utilizes the foot action input to provide control data input for a user interface; and (d) an output device for producing a non-video game computer output based, at least in part, on data provided by the processing system. The control data relating to the foot action is used, at least in part, for controlling a user interface associated with the computer output.

Abstract: A heel cup formed from a flexible material is located under the heel region of an upper portion of an article of footwear. Lateral and medial counters extend upward from the heel cup on the lateral and medial sides, with the medial counter having a height less than that of the lateral counter, and with a rear edge of the heel cup being lower than the lateral and medial counters. A rear strap extends upward around the lateral counter and around the Achilles tendon of the wearer, and is secured to a location on the upper that is forward of the wearer's ankle. During cutting movements in which the article is worn on the outside foot, tilting of the wearer foot and ankle toward the medial side pulls the strap and causes the lateral counter to conform to and support the wearer heel.

Abstract: An article of footwear with a performance characteristic tuning system is provided. The article of footwear may include a stiffening plate configured to add stiffness to the article of footwear. In addition, the article of footwear includes one or more tuning members connected to the stiffening plate and configured to adjust the stiffness of the article of footwear. The stiffening plate and tuning members may be connected to a midsole of the article of footwear or an outsole. In some arrangements, the article of footwear also includes an outsole member. The outsole member may be a plurality of outsole units arranged along various portions of the article of footwear and configured to provide traction and/or impact attenuation to the wearer.

Abstract: A stability and comfort system for an article of footwear is disclosed. The stability and comfort system includes a bootie and a sock liner. The sock liner may include a heel counter that is contoured to fit a heel. The sole of the article may include an outrigger portion. The outrigger portion can be separated from a central portion of the sole to allow the outrigger portion to move substantially independently of the central portion of the sole.

Abstract: An article of footwear includes an upper, a sole attached to the upper, and an impact absorber attached to the upper at least along a midfoot region of the upper and capable of absorbing a portion of a lateral impact when the impact absorber is moved into contact with a top surface of the sole. The impact absorber is be integrally formed with the sole and has a width that varies along a length of the impact absorber. The width of the impact absorber decreases in a forefoot region and a heel region. The upper rolls to contact the top surface of the sole upon lateral impact. The sole and the upper may be attached asymmetrically.

Abstract: A shoe has a sensor system operably connected to a communication port. Performance data is collected by the system and can be transferred for further use via the communication port. The shoe may contain an electronic module configured to gather data from the sensors. The module may also transmit the data to an external device for further processing. Users can use the collected data for a variety of different uses or applications.

Abstract: A shoe has a sensor system operably connected to a communication port. Performance data is collected by the system and can be transferred for further use via the communication port. The shoe may contain an electronic module configured to gather data from the sensors. The module may also transmit the data to an external device for further processing. Users can use the collected data for a variety of different uses or applications.

Abstract: Pieces of apparel, such as foot-receiving devices (e.g., shoes, socks, or the like), form systems and perform methods for applying stimulus to at least a portion of a subject's body to dynamically and/or reflexively affect the subject's performance, motion, orientation, balance, timing, or the like. Such systems and methods may include or utilize: a piece of apparel, e.g., for applying the stimulus to a portion of the subject's body; an input that receives information relating to a first parameter associated with the subject's performance, motion, orientation, balance, timing, or the like; and a stimulator device that applies the stimulus to the subject's body located in or adjacent to the piece of apparel based on the first parameter. The systems and methods further may include a sensor that senses the first parameter and provides information to the system.