Niinimaa V, McAvoy T
Can J Appl Sport Sci. 1983 Mar;8(1):30-3.
Standing stability was measured in 16 male subjects during standing at rest, and aiming an air rifle at both rest and after an exercise bout simulating cross-country ski racing. Subjects consisted of a control group with no previous shooting experience, groups of rookie and established biathletes, and experienced position rifle shooters. Anteriposterior and lateral positions of the subject's centre of pressure were determined by a force platform, sampled at 30 Hz over a 60 second period. Horizontal movement was calculated digitally from the anteriposterior and lateral position data. Body sway was greater (p less than 0.05) during aiming at rest than while standing at rest, and also greater during aiming after exercise than at rest. Body sway was significantly smaller (p less than 0.05) in the position shooters compared to subjects with 4 months or less of shooting training. The contribution of anteriposterior movement to body sway while standing at rest was approximately twice that of lateral movement. Greater increases in lateral movement with aiming and after exercise lead to similar contributions by both components of body sway.
在16名男性受试者静立、模拟越野滑雪比赛的运动回合前后用气步枪瞄准目标时，对其站立稳定性进行了测量。受试者包括无射击经验的对照组、新手和成熟的冬季两项运动员组，以及有经验的姿势射击运动员。通过测力平台确定受试者压力中心的前后和横向位置，在60秒内以30赫兹的频率进行采样。根据前后和横向位置数据数字计算水平移动。静立瞄准期间的身体晃动比静立时更大（p<0.05），运动后瞄准期间的身体晃动也比静立时更大。与射击训练4个月或更短时间的受试者相比，姿势射击运动员的身体晃动明显更小（p<0.05）。静立时，前后移动对身体晃动的贡献约为横向移动的两倍。瞄准和运动后横向移动的更大增加导致身体晃动的两个组成部分的贡献相似。
