The effects of physical exercise on psychophysiological reactions under stress

Abstract

The effects of moderate physical exercise during a 20-minute anticipation period of a public speech were investigated. Mood before the anticipation period was manipulated as an additional stress factor. As a third experimental factor the subjects were given the opportunity for task preparation or not. Besides cardiovascular variables and self-reports of bodily symptoms, mood reports served as dependent variables and as indicators of general well-being. Eighty female students took part in the study. Moderate exercise was associated with strongly increased activation and reports of related bodily symptoms. The reported mood changes as a function of exercise included a decrease in anxiety and an increase in self-reliance. This mood repair effect of exercise was especially apparent when the subjects entered the anticipation period in a negative emotional state. The exercised subjects spoke with greater calmness. The task preparation during anticipation led to slightly increased activation and to reports of bodily symptoms as well as increased anxiety and less self-reliance. The prepared subjects made fewer pauses in their speeches.