the purpose of this thesis was to study the effects of various cognitive strategies on the treadmill running performance of intercollegiate wrestlers (n=12), the independent variables were the four cognitive strategies presented to each s. the dependent variables were the length of time each s would perform at constant effort and intermittent heart rates during performance. three independent replications of a 4 x 4 latin square were utilized. an analysis of variance revealed no significant difference in performance or heart rate between the four treatments {p> .05)* the ss for both performance and heart rate scores revealed a significant f ratio (p<*05). eleven ss ran their best under a directed situation (either voluntary distraction, imagery manipulation, or task specific). one s ran his best under the unaided condition. on a postexperiment questionnaire, ss displayed a lack of awareness of the condition which maximized their performance.