Pressure Measurements in Human Striated Muscles during Contraction

Publisher Website
Google Scholar
Abstract
Summary Measurements of the pressure and the corresponding torque during contraction in the human m. tibialis anterior, m. biceps brachii and vastus medialis m. quadriceps were carried out on 60 normal persons aged 19—45 years. During maximum isometric contraction in m. quadriceps there was an average intramuscular pressure of 479 mm. Hg., ranging from 206 mm. Hg. to 1025 mm. Hg., corresponding to a torque of 11.5 kgm., ranging from 6.1 kgm. to 29.2 kgm. In m. tibialis anterior under the same conditions there was an average maximum pressure of 160 mm. Hg., ranging from 74 mm. Hg. to 472 mm. Hg. In m. quadriceps there was a mean variation of 30 mm. Hg. in the pressure in the muscle at the same prick. The relation between the torque (M) and the pressure (P) is found to be P = M · 22 + k mm. Hg., where k = the level for the torque/pressure curve; this means that k depends on the point in the muscle where the measurements were carried out.

This publication has 5 references indexed in Scilit: