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The influence of work intensity on performance in a psychomotor task was examined using 10 male subjects. The experiment involved a 60s pursuit rotor task during both the 4th and 6th min of cycling at zero resistance and at 25,40,55,70 and 85% V˙O2 max. A curve of the inverted-U form was found to fit the performance data significantly (p<0·05). The mean optimal loading was calculated to occur at a moderate work intensity of 38% V˙O2 max. The results have implications for activities where psychomotor tasks are superimposed on a requirement for high muscular power output levels.
Reilly et al. (Tue,) studied this question.