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作者用高速摄影和NAC—100型运动分析仪,对3名伞兵模拟半蹲式和侧滚式姿势着陆时,足部承受的冲击力进行了研究。结果表明:①平台高1.5m和1.Om,采用半蹲式姿势着陆时,使足部承受的垂直冲击力比侧滚式姿势的冲击力大。②平台高1.0m,采用半蹲式姿势着陆时,使足部承受的水平冲击力比采用侧滚式姿势的冲击力大;平台高1.5m时,两种姿势使足部承受的水平冲击力均有消长,有待进一步研究。③从减小足部承受的着陆冲击力的观点看,侧滚式优于半蹲式。
The authors used high-speed photography and the NAC-100-based motion analyzer to study the impact forces on the foot when three paratroopers simulated a semi-squat and roll-over attitude landing. The results show that: ① The platform is 1.5m high and 1. Om high, so that the vertical impact strength of the foot is greater than that of the side roll attitude when landing in a squat attitude. ② platform height 1.0m, the use of semi-squat posture landing, the horizontal impact force to withstand the foot than the use of roll-type posture of the impact; platform height 1.5m, the two postures to withstand the horizontal impact of the foot All have growth and decline, pending further study. ③ from the point of view to reduce the impact of landing the impact of the foot point of view, roll-type is better than semi-squat.