Physiological and psychological dynamogenic factors in exercise
When a group of muscles is working and another group is set in action there is an immediate increase in the height of contractions of the first group.
At the finish of a race a vigorous arm action facilitates the leg action.
Squeezing corks or clenching the fists at the end of a race is a helpful device, but is not particularly efficient. A vigorous arm swinging has a greater effect upon the legs.
Cheering has a more powerful effect upon the leg contraction than swinging the arms. Yet, in actual competition contestants become relatively deaf and may not be cognizant of such cheering.
Excitable athletes under the stress of competition may involuntarily accelerate their pace to excess, thus losing their chance to win a long race.
KeywordsHuman Physiology Sport Medicine Fist Powerful Effect Actual Competition
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