Muscle Cross Sectional Area

In muscle physiology physiological cross sectional area pcsa is the area of the cross section of a muscle perpendicular to its fibers generally at its largest point.
Muscle cross sectional area. For each training session ts trained at 6 10 rm 6 10 repetitions to failure with 1 2 s concentric 1 2 s eccentric. Jump force and power are negatively associated with age in uk men. A brief review is provided on the relationship of strength to muscle crosssectional area csa.
An mri study in cadavers. There is a correlation between muscle cross sectional area and strength. Atrophy with aging is of particular importance because of the correlation between muscular strength and a.
All answers are correct 3. Studies examining varying levels of training status display discordant data suggesting complex relationships between training status csa and peak force. Suppose that two muscles had identical fiber lengths and pennation angles but one muscle had twice the mass equivalent to saying that one muscle had twice the number of fibers and thus twice the pcsa.
Clin orthop relat res. The mean ratio of strength to cross sectional area was 9 20 1 29 for the untrained group whereas for the trained group this ratio was 9 53 1 01. Different physiologic cross sectional areas.
Pre and post training vastus lateralis muscle biopsies were also analyzed for fiber cross sectional area csa. It is commonly believed that maximal force and csa are strongly related. Both grip strength and csma of the arm were positively associated to a similar extent with radius diaphyseal bone outcomes.
The muscle cross sectional area on mri of the shoulder can predict muscle volume. The muscle cross sectional area on mri of the shoulder can predict muscle volume an mri study in cadavers. It is commonly believed that maximal force and csa are strongly related.