The Study on Relaxed G-tolerance Beween Men and Women

ABSTRACT

The relaxed G-tolerances of 16 female cadets of ROKAF academy and 19 male privates were compared. The relaxed G-tolerance level was measured as visual endpoint (gray out or loss of peripheral light loss) during G-force raise steadily at 0.1 G/s. The G-stimulations were repeated twice with the interval of 30 s for 4 days (female cadets, 9 a.m.; male privates, 10 a.m.). The correlation between the relaxed G-tolerance level and their physical factor (height, sitting height, weight and lean body mass) and muscle strength (power of abdomen, back and thigh) was investigated. The average value of the relaxed G-tolerance levels of female cadets for 4 days was significantly higher than the one of male privates (4.23 +/-0.60, n=111; 4.04 +/-0.64, n=92; student 's t-test, P<0.05). However, the training effect of 4 days was not seen in either female cadet or male private group. The weight and lean body mass have significant positive correlation with the relaxed G-tolerance level. Also, the peak torque of thigh muscle have a strong positive correlation with it, but the endurance ratio does not.