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Abstract
Ages, heights, weights, and 24 static (cable tensiometer) strength test scores were obtained from 81 college men enrolled in service course classes at the University of Oregon during the 1963–64 academic year. Of the 276 intercorrelations between strength scores, 215 were significant (p > .01; r ≥ .285). In general, when age, height, and weight were held constant, the intercorrelations between the strength scores from the different segments of the body were not greatly changed from those of the zero-order correlations between the same strength scores. Five functional clusters or groupings of strength were isolated and identified by means of the application of cluster analysis to the intercorrelations between the strength tests and by an analysis of muscle actions involved in the performance of each of the strength tests. The findings in this study disclosed five clusters or groupings of strength which were specific to shoulder, trunk, neck, wrist, and hip joints. They could also be described as arm and forearm strength, trunk strength, neck strength, hand strength, and thigh and leg strength.