Predictive simulation of gait at low gravity reveals skipping as the preferred locomotion strategy.
Predictive simulation of gait at low gravity reveals skipping as the preferred locomotion strategy.
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DOI：
10.1016/j.jbiomech.2012.01.029
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发表时间：
2012-04-30
影响因子：
2.4
通讯作者：
van den Bogert AJ
中科院分区：
文献类型：
--
作者：
Ackermann M;van den Bogert AJ
随着载人月球和火星任务的重新考虑，低重力环境下步态策略的研究最近取得了进展。尽管阿波罗任务宇航员的报告表明，替代的步态策略可能在月球上受到青睐，但计算模拟和实验研究几乎完全局限于步行或跑步的研究，这是地球引力下首选的运动模式。为了研究低重力下可能采用的步态策略，使用肌肉骨骼系统的生理模型对步态进行了一系列预测性计算模拟，而不假设任何特定类型的步态。采用计算高效的优化策略，允许进行多次模拟。结果表明，跳绳比步行或跑步更有效、更不易疲劳，并表明在低重力下存在步行-跳绳而不是步行-跑步的过渡。研究结果有望作为模拟低重力下步态实验研究设计的背景。
The investigation of gait strategies at low gravity environments gained momentum recently as manned missions to the Moon and to Mars are reconsidered. Although reports by astronauts of the Apollo missions indicate alternative gait strategies might be favored on the Moon, computational simulations and experimental investigations have been almost exclusively limited to the study of either walking or running, the locomotion modes preferred under Earth's gravity. In order to investigate the gait strategies likely to be favored at low gravity a series of predictive, computational simulations of gait are performed using a physiological model of the musculoskeletal system, without assuming any particular type of gait. A computationally efficient optimization strategy is utilized allowing for multiple simulations. The results reveal skipping as more efficient and less fatiguing than walking or running and suggest the existence of a walk-skip rather than a walk-run transition at low gravity. The results are expected to serve as a background to the design of experimental investigations of gait under simulated low gravity.