The novel system of the present invention includes a plurality of moveable markers, such as cones, having two visually contrasting indicators useful for physically and visually demarcating activity zones. The markers can be dispersed spatially, such as being placed on the ground or on posts, to demarcate areas, zones, regions or boundaries, for conducting an activity, such as soccer practice. The system is useful to guide, instruct, monitor or constrain the activity of an individual, or object. Alignment of the markers can visually separate one zone from another zone so as to indicate different activities for each zone.

Provided are underwater spectacles, including a spectacle holder, spectacle belts and an intelligent control system. The intelligent control system includes a warning device, a microprocessor and a plurality of radars. The plurality of radars are respectively disposed on the spectacle holder and the spectacle belts. Input ends of the microprocessor are respectively connected with the plurality of radars, and an output end of the microprocessor is connected with the warning device. The microprocessor acquires signals of the radars, determine obstacle information and/or danger avoiding information around the head of a user, and send the information to the warning device. The warning device receives and provides the user with the obstacle information and/or the danger avoiding information. A control method of the underwater spectacles is also provided.

An exercise assistance device includes a biological information acquisition unit, a storage unit, an exercise menu setting unit, and an exercise menu presentation unit. The biological information acquisition unit acquires, from a biosensor that measures a measurement target substance contained in a secretion from a living body, biological information indicating a result of such measurement by the biosensor. The storage unit stores the biological information. The exercise menu setting unit sets an exercise menu based on the biological information stored in the storage unit. The exercise menu presentation unit presents the exercise menu set by the exercise menu setting unit.

Systems and techniques for the collection and display of athletic information. Athletic data relating to a single person or group of people is collected at a central location, and subsequently displayed at a desired remote location so that the person or people can review and critique their performance. In addition, athletic data for multiple persons can be collected at a central location, and subsequently displayed to a user at a desired remote location, so that the user can compare his or her athletic activities to others.

Safe and effective exercise poses a specific set of challenges for subjects diagnosed with diabetes. These challenges include the coordination of exercise with blood glucose monitoring and insulin administration. Failure to coordinate these factors effectively can lead to various pathologies related to aberrant blood glucose levels. Presented herein are methods, systems, algorithms, computer program products, web portals, real-time live instruction, and computer-executable code for exercise guidance and instruction specific to diabetes relief and management. The systems as disclosed herein can help ameliorate, slow, or reduce a likelihood of developing a diabetic condition.

Safe and effective exercise poses a specific set of challenges for subjects diagnosed with diabetes. These challenges include the coordination of exercise with blood glucose monitoring and insulin administration. Failure to coordinate these factors effectively can lead to various pathologies related to aberrant blood glucose levels. Presented herein are methods, systems, algorithms, computer program products, web portals, real-time live instruction, and computer-executable code for exercise guidance and instruction specific to diabetes relief and management. The systems as disclosed herein can help ameliorate, slow, or reduce a likelihood of developing a diabetic condition.

A strength training apparatus includes a rack configured to hold a bar between exercises performed using the bar, at least one light source coupled to the rack, and a controller communicable with the light sources. The controller is programmed to determine a desired range of motion for a current exercise and control the at least one light source to display an illumination pattern based on the desired range of motion.

A content evaluation device is a pulse wave detection device that detects the pulse wave of a player during game play, comprising an image acquisition unit, a detection area setting unit, and a pulse wave detection unit. The image acquisition unit acquires an image including a player. The detection area setting unit sets a detection area that includes the skin of the player included in the image acquired by the image acquisition unit. The pulse wave detection unit detects the pulse wave of the player from the detection area set in the detection area setting unit.

A head guard is provided. The head guard includes one or more sensors as part of an sensory input and communications system. The head guard wirelessly communicates data to remote computing devices for intelligent data collection.

The Chair Exerciser is an apparatus and method to exercise one's core, back, and legs while working on tasks that are normally performed seated. These tasks include computer work, watching television, or computer gaming. The Chair Exerciser fits on a regular chair and one sits upon it. The Chair Exerciser's resistance can be adjusted to the suit the needs of the user. The multitasking of work and exercise is an attractive benefit to the Chair Exerciser. The Chair Exerciser can also be formed as an integral part of the chair as opposed to a portable unit.