Many physiological factors, such as spinal elongation, bone atrophy, and muscle loss, occur when humans are exposed to a microgravity environment. These physiological changes can result in slight to drastic changes in body dimensions. Any drastic change in body dimensions is critical information for current and future space hardware designers. These changes can affect accommodation, safety, and performance of a crewmember while in space. This study measured the overall change in seated height and stature for crewmembers exposed to a microgravity environment. Seated height data were obtained from 29 crewmembers that included 8 International Space Station increment crew (2 females and 6 males) and 21 Shuttle crew (1 female and 20 males). The results indicate that all participating crewmembers experienced statistically significant change in seated height. The corresponding change, 6% from preflight, should be considered for vehicle designs as the necessary seated microgravity adjustment.

中文翻译：

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微重力中坐姿高度的变化。

当人类暴露于微重力环境中时，会发生许多生理因素，例如脊椎伸长，骨萎缩和肌肉丢失。这些生理变化可能会导致身体尺寸发生轻微到剧烈的变化。车身尺寸的任何急剧变化对于当前和未来的太空硬件设计人员都是至关重要的信息。这些变化会影响太空中乘员的住宿，安全和性能。这项研究测量了暴露于微重力环境下的机组人员坐姿高度和身高的总体变化。从29名机组人员获得了就座高度数据，其中包括8名国际空间站增量机组（2名女性和6名男性）和21名航天飞机机组（1名女性和20名男性）。结果表明，所有参与的机组人员的坐姿高度都有统计学上的显着变化。对于飞行器设计，应考虑飞行前相应的变化（6％），作为必要的就座微重力调节。