MORPHOLOGICAL CHARACTERISTICS OF ADULT SKELETAL MUSCULAR TISSUE ESTIMATED BY ANALYZING ITS FUNCTIONAL PERFORMANCE

Abstract

This short review aims to analyze the capacity of functional analysis, through isokinetic dynamometry, to gather information on muscle fiber contractile characteristics in normal sedentary individuals, athletes, elderly people and in muscular alterations (atrophy and myopathy). The studies, here reported, demonstrated that by kinetic functional analysis, in contrast to the in vitro one, muscular performance in individuals may be quantified in conditions close to their daily or sportive activities. Thus, it is possible to precisely determine the influence of muscular adaptations in conducting these activities and, in addition, verify how muscular contraction functions in adverse clinical conditions like, lack of use, muscular atrophy, aging and myopathy. Different functional variables (fatigue index, torque, potency and work) are strongly related with different types of fibers, particularly with type 2 fast contraction fiber. Consolidation of the dynamometer as an instrument for measuring and/or diagnostic of various muscular conditions is highly relevant to therapeutic practice and merits emphasizing to health professionals.