The relationship of strength to body size and typology

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Thirteen measures of static strength, 13 body-size measurements, and the somatotypes of 77 male subjects were obtained and the interrelationships among these measures were investigated. Summary descriptive statistics are given for the 29 variables studied. Simple and selected partial correlations were calculated and the results interpreted at the 0.05 level of significance.The zero-order correlations revealed that body weight, lean body mass and mesomorphy yielded the highest correlations with mean total strength. Stature, skinfold measurements and the length of the lever arms of the body were not related to mean total strength; however, the relationship between the strength and length of specific torso and arm linkages while weak is definitely indicated. The first-order partial correlations (weight held constant) between body size measures, lean-body mass and strength measures were about the same as the identical zero-order correlations; however, with weight held constant the skinfold measurements yielded many significant correlations with muscle strength. By holding the effects of stature constant the somatotype. components produced several significant correlations with the static-strength measures. The second-order partial correlations (weight and stature held constant) revealed that the subscapular and suprailiac skinfolds are more of a factor in the exertion of static strength than the triceps skinfold.It would appear that the measures of body size, typology and composition used in this analysis were not effective predictors of muscle strength as measured by the static-contraction method.

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