摘要:In order to examine the relationship between muscle volume and anaerobic threshold (AT), we measured ventilatory threshold(VT), an estimated value of AT, of four adult subjects during four modes of exercises (flexion-to-extension exercises of right elbow, both elbows, right knee, and both knees). Mobilized muscle volume was estimated by the change in circumference of the muscle mainly used during each exercise.It was found that the more the muscle volume is mobilized the higher VT becomes, suggesting that different VT value obtained during exercises of upper extremity ergometer, lower extremity ergometer, or treadmill may result from a difference in muscle volume mobilized.