A pivoting or collapsible pole vault cross bar pin is disclosed herein. Specifically, the pin includes a base that is mountable to the pole vault standard or upright stanchion, and a support arm. The support arm is spring-biased and disposable between an operative, extended position and a collapsed, pivoted position. When in the extended position, the support arm or pin assembly is structured to support a cross bar thereon, such as a cross bar used in a pole vaulting track and field event. Upon sufficient impact, the support arm will collapse or pivot in a downward direction, thereby releasing the cross bar and minimizing potential injury to an athlete, either by avoiding a violent impact with the cross bar or the pin assembly, itself.

A training system for a jumper on a jump path over a crossbar predicts the jumper's flight path and cues the jumper if the flight path is too close to the crossbar or to take action if the jumper is predicted to strike the crossbar. The system includes a sensor viewing the jumper from a direction paralleling the crossbar and producing data points representative of the lowest edge of the jumper in the vicinity of the crossbar. A computer receiving the data points is programmed to determine therefrom the jumper's flight path, the jumper's forward speed, the location of a jumper's lower legs relative to the crossbar, an expected impact time of the lower legs with the crossbar, and a cuing time. A cuing device, such as a horn, cues the jumper to raise the lower legs so as to not impact the crossbar.

A training system for a jumper on a jump path over a crossbar predicts the jumper's flight path and cues the jumper if the flight path is too close to the crossbar or to take action if the jumper is predicted to strike the crossbar. The system includes a sensor viewing the jumper from a direction paralleling the crossbar and producing data points representative of the lowest edge of the jumper in the vicinity of the crossbar. A computer receiving the data points is programmed to determine therefrom the jumper's flight path, the jumper's forward speed, the location of a jumper's lower legs relative to the crossbar, an expected impact time of the lower legs with the crossbar, and a cuing time. A cuing device, such as a horn, cues the jumper to raise the lower legs so as to not impact the crossbar.

A form for constructing a foundation for anchoring a pole vault standard to a support structure adjacent to a landing pad includes a first frame and a first plurality of connectors defining a first connecting pattern for coupling to a corresponding connecting pattern of a base of the first pole vault standard. The form is installable in the support structure and operable for use in fixedly connecting the first base of the pole vault standard to the form. A pair of forms may be employed for constructing a pair of foundations for anchoring a pair of pole vault standards to a support structure adjacent to a landing pad.

A form for constructing a foundation for anchoring a pole vault standard to a support structure adjacent to a landing pad includes a first frame and a first plurality of connectors defining a first connecting pattern for coupling to a corresponding connecting pattern of a base of the first pole vault standard. The form is installable in the support structure and operable for use in fixedly connecting the first base of the pole vault standard to the form. A pair of forms may be employed for constructing a pair of foundations for anchoring a pair of pole vault standards to a support structure adjacent to a landing pad.

Trampoline systems containing multiple trampoline jumping surfaces are disclosed. Methods of making and using trampoline systems containing multiple trampoline jumping surfaces are also disclosed.

Trampoline systems containing multiple trampoline jumping surfaces are disclosed. Methods of making and using trampoline systems containing multiple trampoline jumping surfaces are also disclosed.

Devices, systems, and methods are provided for performing volume and intensity-based activity evaluations. A method may include determining, by a device, a heart rate. The method may include determining, based on the heart rate, a motion threshold amount for a time period. The method may include determining motion data. The method may include comparing the motion data to the motion threshold for the time period. The method may include determining, based on the comparison of the motion data to the motion threshold for the time period, an activity intensity level associated with the heart rate and the motion data. The method may include determining, based on the activity intensity level, an activity score. The method may include sending data indicating the activity score for presentation at a second device.

A training system for a jumper on a jump path over a crossbar predicts the jumper's flight path and cues the jumper if the flight path is too close to the crossbar or to take action if the jumper is predicted to strike the crossbar. The system includes a sensor viewing the jumper from a direction paralleling the crossbar and producing data points representative of the lowest edge of the jumper in the vicinity of the crossbar. A computer receiving the data points is programmed to determine therefrom the jumper's flight path, the jumper's forward speed, the location of a jumper's lower legs relative to the crossbar, an expected impact time of the lower legs with the crossbar, and a cuing time. A cuing device, such as a horn, cues the jumper to raise the lower legs so as to not impact the crossbar.

A hurdle has a supporting frame and two crossing rods. The two crossing rod each respectively employing a connecting joint, a spring, an engaging member, and a locking screw engageable with two opposing standing bars. The supporting frame includes the two standing bars and a horizontal aperture. The crossing rod has a hollow rod body, a soft protector jacketed onto the rod body, and a secure aperture disposed through an end of crossing rod. The connecting joint includes a hollow tubal structure with an axial hole, a connecting section with a smaller diameter is disposed at an end, a combining aperture disposed on the connecting section. An end of the spring is a hook end and another end is a screw stem having a threaded section and an inner threaded aperture, and the hook end of the spring is placed into the connecting joint through the axial hole.