Abstract
This study examined the change of exertion force during maximal sustained toe grip and the relationships among toe muscle endurance parameters. Fourteen male students aged 19-24 years old participated in this study. After hearing a signal, the subjects were instructed to grip the bar with their toes as fast as possible in a seated position, and to sustain maximal force exertion for 3 minutes. The sustained times of 60, 70, and 80% forces of maximal toe grip strength (MAX), and final strength (% of MAX) were selected as parameters. The force decreased markedly until about 30 sec （about 50% of MAX）after the beginning of sustained toe grip exertion, then slowly decreased and was about 40% of MAX at 3 minutes. There were significant correlations among the sustained times of force parameters, but not between the sustained times of force parameters and final force. Therefore, these parameters were judged to evaluate the different characteristics of muscle endurance.
