Prior researchers have observed the effect of simulated reduced-gravity exercise. However, the extent to which lower-body positive-pressure treadmill (LBPPT) walking alters kinematic gait characteristics is not well understood. The purpose of the study was to investigate the effect of LBPPT walking on selected gait parameters in simulated reduced-gravity conditions. Twenty-nine college-aged volunteers participated in this cross-sectional study. Participants wore pressure-measuring insoles (Medilogic GmBH, Schönefeld, Germany) and completed three 3.5-min walking trials on the LBPPT (AlterG, Inc., Fremont, CA, USA) at 100% (normal gravity) as well as reduced-gravity conditions of 40% and 20% body weight (BW). The resulting insole data were analyzed to calculate center of pressure (COP) variables: COP path length and width and stance time. The results showed that 100% BW condition was significantly different from both the 40% and 20% BW conditions, p < 0.05. There were no significant differences observed between the 40% and 20% BW conditions for COP path length and width. Conversely, stance time significantly differed between the 40% and 20% BW conditions. The findings of this study may prove beneficial for clinicians as they develop rehabilitation strategies to effectively unload the individual’s body weight to perform safe exercises.

中文翻译：

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一组压力测量鞋垫，用于表征模拟低重力条件下的步态参数

之前的研究人员已经观察到模拟减重力运动的效果。然而，下半身正压跑步机 (LBPPT) 步行改变运动步态特征的程度尚不清楚。该研究的目的是研究 LBPPT 步行对模拟减重条件下选定步态参数的影响。29 名大学生志愿者参与了这项横断面研究。参与者穿着压力测量鞋垫 (Medilogic GmBH, Schönefeld, Germany) 并在 LBPPT (AlterG, Inc., Fremont, CA, USA) 上以 100%（正常重力）和降低重力完成了三个 3.5 分钟的步行试验40% 和 20% 体重 (BW) 的条件。分析所得鞋垫数据以计算压力中心 (COP) 变量：COP 路径长度和宽度以及站立时间。p < 0.05。COP 路径长度和宽度在 40% 和 20% BW 条件之间没有观察到显着差异。相反，站立时间在 40% 和 20% BW 条件之间显着不同。这项研究的结果可能证明对临床医生有益，因为他们制定了康复策略以有效减轻个人体重以进行安全锻炼。