81 young male adults participated in a 6-wk. × 7 days a week myotatic and isometric strength training program. Associated with strength increments myotatic practice proved to be superior to the isometric program relative to improvement of movement time (MT) in the experimental leg and contralateral transfer to the control limb. As a result of isometric exercises reaction time (RT) was decreased and was transferred more effectively than in the myotatic group although there was a loss of speed of movement in both limbs following isometric training. Correlations between RT and MT with pretraining strength and strength increment scores showed a high degree of specificity of relationship of individual differences.
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