Abstract
The purpose of this study was to determine the influence of curve radius of the indoor (200 m) and outdoor (400 m) treadmill on bioelectrical muscle activity. Four professional male athletes that have an international master class in men's 400 m took part in that research. EMG measurements were recorded during the run on tartan athletic track in the indoor (200 m) and outdoor (400 m) treadmill. The athlete had to run 400 m distances with maximal speed. The mean power frequency (MPF) was calculated. Muscle fatigue was evaluated by the slope of regression line. The rate of fatigue was different and was related to the side of the body (3–24%) and the type (5–43%) of the muscle. Results indicate that muscle fatigue was greater for the right leg and during running on indoor truck.
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