PDF(Pubmed)
Abstract：
This study compared the joint kinematics between the front squat (FS) conducted in the upright (natural gravity) position and in the supine position on a short arm human centrifuge (SAHC). Male participants (N = 12) with no prior experience exercising on a centrifuge completed a FS in the upright position before (PRE) and after (POST) a FS exercise conducted on the SAHC while exposed to artificial gravity (AG). Participants completed, in randomized order, three sets of six repetitions with a load equal to body weight or 1.25 × body weight for upright squats, and 1 g and 1.25 g at the center of gravity (COG) for AG. During the terrestrial squats, the load was applied with a barbell. Knee (left/right) and hip (left/right) flexion angles were recorded with a set of inertial measurement units. AG decreased the maximum flexion angle (MAX) of knees and hips as well as the range of motion (ROM), both at 1 and 1.25 g. Minor adaptation was observed between the first and the last repetition performed in AG. AG affects the ability to FS in naïve participants by reducing MAX, MIN and ROM of the knees and hip.
摘要：
这项研究比较了在短臂人体离心机（SAHC）上在直立（自然重力）位置和仰卧位置进行的前蹲（FS）之间的联合运动学。先前没有在离心机上锻炼经验的男性参与者（N=12）在暴露于人工重力（AG）的同时在SAHC上进行的FS锻炼之前（PRE）和之后（POST）完成了直立位置的FS。参与者完成，按照随机顺序，三组六次重复，负荷等于体重或直立下蹲的1.25倍体重，AG的重心（COG）为1g和1.25g。在陆地深蹲期间，负载是用杠铃施加的。用一组惯性测量单元记录膝(左/右)和髋(左/右)屈曲角度。AG降低了膝盖和臀部的最大屈曲角度（MAX）以及运动范围（ROM），1和1.25g。在AG中进行的第一次和最后一次重复之间观察到轻微的适应。AG通过降低MAX影响幼稚参与者的FS能力，MIN和ROM的膝盖和臀部。
