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Abstract The purpose of this study was to determine whether a flexibility training program, a weight training program, and the combination of both would affect running speed when used as supplementary training programs to the conventional method of training sprinters. One hundred and forty-five subjects, randomly assigned to one of five training groups, were tested for flexibility, leg strength, and running speed before and after an 8-week training period. Results showed that both weight training and flexibility training, as supplements to sprint training, increased running speed significantly more than an unsupplemented sprint training program.
George B. Dintiman (Tue,) studied this question.