Abstract
Abstract Boys (N = 59) in the 6 to 12 yr age range served as subjects in a study to ascertain the influence of body size and composition on peak force and maximal rate of static strength exertion as measured from force-time (F-T) curves. Weight, fat free weight, standing height, sitting height, and sitting/standing height ratio were assessed as representative physical growth variables. Maximal exertion of static muscular force for elbow flexors and grip squeezing muscle groups were recorded using a Linear Voltage Differential Transformer (LVDT) with 1 millisec samples analyzed through a series of computer programs. The design included repeat testing of the growth measures and static force tasks for each subject on two different days 1 wk apart. High reliability coefficients were found for all variables. Dividing the subjects into 5 age groups yielded significant age-wise developmental trends for all variables. ANCOVA, using the physical growth variables as the covariates, yielded no significant age-wise trend for either peak force or maximal rate for the elbow flexion and grip squeezing tasks. The results indicated that rate of force production is somewhat independent of peak force, yet influenced by body size and composition as is peak force.
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Schedule a callMore From: Research Quarterly. American Alliance for Health, Physical Education and Recreation
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