Key result
Repeated isometric wrist flexion revealed that different levels of strength possess dissimilar local circulatory efficiency and tolerance to fatigue products.
Different levels of isometric strength are associated with dissimilar local circulatory efficiency and tolerance to fatigue products.
No fixed critical intensity in isometric fatigue; leaves open whether strength modulates curves in clinical populations.
Thirty male subjects were given 20 trials of isometric wrist flexion on each arm. Each trial consisted of 5 sec. of maximum exertion followed by a 30 sec. rest period. Subjects were ranked on the basis of the first two trials for each of the limbs and divided into three groups of 10 subjects each representing high, middle, and low levels of strength. Analysis of variance of the fatigue curve trends suggested that: (a) there is no biologically fixed and constant absolute critical intensity level of isometric muscular tension which occludes intramuscular circulation, and (b) different levels of strength possess dissimilar local circulatory efficiency and/or tolerance to fatigue products.
No takes yet. Share an insight, caveat, or question.
Walter Kroll (1966) studied this question. Repeated isometric wrist flexion vs. Comparison between high, middle, and low strength groups was evaluated on Fatigue curve trends. Repeated isometric wrist flexion revealed that different levels of strength possess dissimilar local circulatory efficiency and tolerance to fatigue products.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: