An exercise path approaching person signaling device includes a housing that has a top wall, a bottom wall, and a perimeter wall attached to extending between the top and bottom walls. A wristband is attached to the housing and is releasably mounts the housing on a person's wrist. A sound emitter is mounted in the housing and emits a warning sound having a volume of at least 70 decibels when turned on. The sound emitter includes a switch mounted on the housing. The sound emitter is turned on to emit an alert sound when the switch is actuated.

In a first aspect, a system for monitoring a swing is provided that includes (1) a swing measurement device adapted to couple to a swinging object and to output a signal indicative of a characteristic of the swinging object; (2) a wireless transmitter coupled to the swing measurement device and adapted to wirelessly transmit the signal output by the swing measurement device; and (3) a wireless device adapted to receive the wirelessly transmitted signal and to provide information regarding the swinging object based on the received signal. The wireless device is a cellular telephone or personal digital assistant (PDA). Numerous other aspects are provided.

A plurality of control sequences is stored. A user state is detected. A next control sequence associated with the user is selected from the plurality of control sequences based at least in part on the user state.

Disclosed is system and method for measuring the tension of a tennis net, and, alternatively or in addition, for determining if a service let occurs via the measuring of the net tension. The disclosed embodiments measure a force exerted on the center-strap or the singles stick by the net. In these embodiments, the measured force provides an accurate reflection of the tension of the net.

Traditional climbing is being sought out by more indoor climbers, however the issue that has arisen is that the only way to learn the method is through trial and error in the outdoors on real rock. An indoor-traditional climbing device (I-TCD) makes it possible to learn how to climb Traditionally in a safe environment with hands on instruction. Provided herein is a cover/shield for an I-TCD that allows not only for the placement of multiple kinds of gear within the I-TCD body, but it allows the climber to fall on that gear placement safely to determine the quality of their gear placement, without the risk of falling upon the I-TCD body. Therefore, the cover/shield provides an angled feature to reduce direct impact injuries while increasing the opportunity for climbers who wish to learn how to climb traditionally.

The present disclosure relates to systems and methods for measuring the location, the amplitude, and/or the direction of forces applied to a walking or running surface. An example system includes a pressure-sensitive sheet that extends along a first axis. The pressure-sensitive sheet includes a top surface and a bottom surface. A vertical force applied at a location along at least one of the top surface or the bottom surface forms an electrical path between the top surface and the bottom surface having a resistance, r.sub.f, that is inversely proportional to an amplitude of the vertical force. The system further includes read out circuitry configured to provide information indicative of the amplitude of the vertical force and the location of the vertical force along the first axis of the pressure-sensitive sheet.

An indication is received from a user to rack or unrack a digital weight. A motor is signaled to apply or remove tension to a cable couple to the motor based at least in part on the indication. The actuator is connected to the cable and is physically arranged to deliver a force to the user. The motor selectively tensions a cable in accordance with an exercise program.

A program is presented to a user including a stream of content including a first auditory content and a first visual content related to the workout. A context state of the user participating in the workout is determined based on information from a sensor. A responsive content is selectively added based on the context state of the user to the stream of content in a manner that avoids conflict with the stream of content.

The present invention provides a competitive weightlifting system capable of interacting with and comparing weightlifting performances of multiple users, and creating competition between such users by displaying a ranked list of performances by those users. The system may include a frame for supporting and guiding a lift bar, sensors mounted to the frame for measuring and refereeing the performance of a user, a controller housed in the frame for tracking and ranking user performances with an interface for creating and logging into user profiles, and a communication device for sharing user performance data with other remote competitive weightlifting systems (e.g., competitive weightlifting systems in other gyms or homes) in order to create a wide-ranging competition between, and ranked leaderboard of, the many users.

An indication is received from a user to rack or unrack a digital weight. A motor is signaled to apply or remove tension to a cable couple to the motor based at least in part on the indication. The actuator is connected to the cable and is physically arranged to deliver a force to the user. The motor selectively tensions a cable in accordance with an exercise program.