Work and rest as variables in cyclical motor learning.

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Abstract
Four conditions of cyclical alternation of distr. of practice were administered to separate groups of human subjects in an investigation of performance as a function of the length of the practice period and as a function of the length of interpolated rest. The 4 conditions employed were the following: 10 sec. work, 10 sec. rest; 10 sec. work, 30 sec. rest; 30 sec. work, 30 sec. rest; 30 sec. work, 10 sec. rest. Results suggest that, within the limits of this expt. the work variable is the more important in producing score differences throughout learning. Performance differences as a function of the work variable appear to be constant from the beginning of practice. Performance differences produced by differences in the length of interpolated rest, on the other hand, increase with practice. The joint effect produced by a concomitant lengthening of the work period and shortening of the rest period is a simple summation of the 2 separate effects.

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