[Biomechanics study during march with different military equipment of equal carrying load]

The purpose of the study is to select the best military equipment of equal carrying load by the index of biomechanics. Six healthy young men whose age varied between 19 and 25 years were volunteered, in the experiment. They were required to march 1.5 h, carried with different military equipment of equal weight, 25 kg, at a speed of 5 km/h. The centre of gravity of the body and its kinesic parameters were measured before and after the march. The frequency and length of pace were measured during the march. The results of the study indicated that the displacement of the body's centre of gravity carrying equipment I was the most evident, whereas the least displacement of centre of gravity of the body was that carrying equipment II. The frequency of pace during the march was reduced in all three carrying different kinds of equipment, the most evident being that carrying equipment I; the length of pace became bigger with those carrying equipment II and III; the speed of pace was decelerated using equipment I, but it was quickened with equipment II. The change of kinesic parameters have no significant difference among the three. In summary; equipment II conforms best to biomechanical principles, whereas equipment I is the worst.