A Muscle-Computer Interface (muCI) is a human-machine system that uses electromyographic (EMG) signals to communicate with a computer. Surface EMG (sEMG) signals are currently used to command robotic devices, such as robotic arms and hands, and mobile robots, such as wheelchairs. These signals reflect the motor intention of a user before the…

Postural deviations resulting from strength and flexibility imbalances include swayback, scoliosis, and rounded shoulders. Screening tests are one method for identifying strength problems. Tests for the evaluation of postural problems are described, and exercises are presented for the strengthening of muscles. (JN)

Current knowledge in the area of muscle physiology is a basis for a discussion on strength training programs. It is now recognized that the expression of strength is related to, but not dependent upon, the size of the muscle and is probably more related to the ability to recruit more muscle fibers in the contraction, or to better synchronize their…

Some individuals have muscles that contract extremely rapidly, while others have ones that contract more slowly. Recent research in muscle physiology which explains this phenomenon is discussed. (Author/JN)

The off-season football strength training and conditioning program at the University of Miami was developed to emphasize commitment and continued intensity of effort on the part of the individual player. The program emphasizes the intrinsic rewards of physical conditioning, positive reinforcement for effort, and individual responsibility for…

Physical fitness is not simply a performance oriented discipline but also, and more importantly, a health oriented discipline. The new American Alliance for Health, Physical Education, Recreation and Dance (AAHPERD) Health Related Physical Fitness Test battery reflects this idea in its four components: cardiovascular function, body composition,…

Several simple performance tests are described for assessing an athlete's major energy-producing capabilities. The tests are suitable for mass screening because they are easy to administer, require no sophisticated equipment, and can be done quickly. Information for evaluating test results is included. (PP)