Facilitation of physical performance by means of a cognitive strategy.

The purpose of this investigation was to evaluate the efficacy of a dissociative cognitive strategy in facilitation of endurance performance. A pilot study of endurance performance was conducted in which 15 subjects ran to exhaustion on a motor-driven treadmill at 80% of maximal aerobic power (MAP). These subjects were randomly assigned to a cognitive strategy (dissociation), placebo, or control group and retested. The group employing the cognitive strategy was superior (+19%) to the control and placebo groups. In the second experiment control (N = 13) and dissociation (N = 14) groups were tested at 80% of MAP under baseline conditions, and again at the same metabolic demand with the exception that subjects in the experimental group employed the dissociative cognitive strategy used in the pilot study. The two groups were found to be remarkably similar on all physiological measures, but the dissociation group experienced a significant performance gain. The exercise metabolite, blood lactate, was similar in the two groups, and plasma catecholamine levels were higher in the dissociation group. This implies that distraction of sensory discomfort enabled subjects in the dissociation group to tolerate a greater amount of discomfort for a longer period of time. These findings suggest that a cognitive strategy based upon dissociation of sensory input can facilitate endurance performance on tasks of the type employed in the current investigation.