Abstract This study was designed to measure the biomechanical changes, if any, which accompany the improvement in running performance normally occurring as a result of an extended training period. An attempt was made to develop a quantitative biomechanical “profile” for analyzing running technique and to apply this method in a longitudinal study of distance runners. A total of 11 experienced collegiate distance runners were chosen for final evaluation. They were filmed while running at selected speeds each fall and spring under nearly identical conditions. The biomechanical components isolated for analysis were : (1) stride length, (2) stride rate, (3) stride time, (4) time of support, and (5) time of nonsupport. Results indicated that while modifications in biomechanical parameters did occur which tended to be specific for each runner, group patterns existed as well. Dependent t-tests revealed statistically significant differences for all variables. The methodology employed offers a simple method of quan...
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