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The purpose of this study was to investigate the relationship between strength measures and sprinting performance, and to determine if these relationships varied for different phases of sprint running. Twenty (11 males and 9 females) elite junior track and field athletes served as subjects. Athletes performed maximum sprints to 50 m from a block start and(More)
We present a comprehensive theory of nuclear spin polarization of 3 He and 129 Xe gases by spin-exchange collisions with optically pumped alkali-metal vapors. The most important physical processes considered are ͑1͒ spin-conserving spin-exchange collisions between like or unlike alkali-metal atoms; ͑2͒ spin-destroying collisions of the alkali-metal atoms(More)
The aim of our work is to apply the concepts of communication and control theory to an analysis of neurological servomechanisms. The group is composed of neurologists, mathematicians, and electrical engineers. Our research endeavors span a wide field that includes experiments on human control mechanisms, mathematical methods for analysis of nonlinear(More)
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