The effect of acute resistance exercise on feelings of energy and fatigue
Herring, Matthew P.
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Purpose: The effect of acute moderate-to-high intensity resistance exercise on energy and fatigue feelings was examined as was resting physiologic tremor as a potential biological correlate of fatigue feelings. Methods: Fourteen physically inactive females reporting persistent -1fatigue feelings completed 3 conditions in random order 1 day·week for 3 consecutive weeks. Resting tremor amplitude was assessed before the conditions. Mood was assessed before conditions, every 11 min and 40 s during, and 20 and 30 min following conditions. Results: Vigor was significantly higher for 70% 1-RM compared to control (t =3.12, p =.01). Fatigue was significantly lower for 15% 1-RM/placebo compared to control (t =-2.59, p =.04). Hand tremor amplitude was positively correlated with baseline fatigue feelings (r =.36). Conclusions: Acute moderate-to-high intensity resistance exercise increased energy feelings during and following exercise compared to control. Tremor may be a biological correlate of fatigue feelings.