Abstract
[Purpose] The purpose of this study was to investigate the duration effect of PNF pattern, from the reaction time (RT). We divided the subjects into a PNF group, with flexion-adduction-external rotation of the upper extremity, and a non-PNF group without PNF. We measured the RT of elbow flexion before and after the exercise and over a period of time, to investigate the duration effect. [Subjects] The Subjects were 20 healthy males. [Methods] We divided the subjects into a PNF group, who underwent a flexion-adduction-external rotation pattern of the upper extremity, and a non-PNF group who were told just to flex and extend their elbow. We measured the RT during elbow flexion movement before exercise, right after exercise, and at 5, 10, 15, 20, and 30 minutes after exercise. [Results] There were no significant differences among the results of the non-PNF group. For the PNF group, there were significant differences in RT between pre-and post-exercise, and 5-20 minutes after exercise. [Conclusion] The results suggest that arousal of the central nervous system was maintained for up to 20 minutes by PNF.
