THE EFFECT OF pH ON NEUROMUSCULAR FUNCTION DURING DYNAMIC EXERCISE

Authors
  1. Cafarelli, E.
Corporate Authors
York Univ, Downsview ONT (CAN) Dept of Physical Education and Athletics;Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The purpose of this study was to determine the effects of fatigue on the electrical and force producing properties of the quadriceps femoris muscle group during dynamic exercise. These effects were determined by independently manipulating body fluid buffering capacity and exercise intensity. Extracellular pH reflected by whole blood pH had no effect on: the EMG/force relationship during dynamic exercise; the frequency distribution of the surface EMG of the thigh muscle during dynamic exercise; or the characteristics of force application by the leg extensors during dynamic exercise; high intensity exercise caused an increase in the EMG/force relationship; high intensity exercise increased the ratio between 23Hz/260 Hz content during 30 min of dynamic exercise; high intensity exercise caused peak force to be applied later in the power phase than low intensity exercise.
Date of publication
15 Mar 1986
Number of Pages
34
DSTKIM No
86-02376
CANDIS No
97089
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: