抄録
With the use of an arm ergometer, the maximal muscle force and endurance in males and females were studied. The maximal force in females was about 55 to 60 % of that in males. The endurance in females was, on the contrary, 20% superior to that in males. From this fact, it is theoretically presumed that normal working capacity in a female is approximately 2/3 of that in a male.