Movement Analysis Laboratory, Institute of Experimental Musculoskeletal Medicine IEMM, University Hospital Münster, Domagkstrasse 3, 48149 Münster, Germany.
Neurosci Lett. 2011 Sep 26;503(1):58-62. doi: 10.1016/j.neulet.2011.08.010. Epub 2011 Aug 17.
The plantar surface of the foot senses local pressures during stance and locomotion. These foot loading characteristics may be affected by long distance running. Little is known about the physiological effects of sports-related loading on plantar sensitivity and their relationship with plantar foot loading. The purpose of this study was to investigate the acute effects of long distance running on plantar sensitivity to touch and their relationship with foot loading characteristics. It was hypothesized that plantar sensation would decrease after long distance running and may be related to foot loading characteristics. In 15 middle-aged runners, sensory detection thresholds to light touch and plantar pressures were measured before and after a 10 km run. After the run, no significant changes in sensory perception thresholds were observed so that correlations between foot sensitivity and foot loading could not be calculated. A significant decrease of force-time integrals and maximum forces was demonstrated in the whole foot (-6.2%, p=0.003; -3.9%, p=0.001) and the heel (-10.5%, p=0.003; -8.5%, p=0.002). Furthermore, maximum force was significantly reduced in the lateral midfoot (-6.4%, p=0.002). In conclusion, a sub-maximal 10 km running exercise appears to have no significant acute effects on plantar sensitivity, plantar pressure distribution and peak forces.
足部的足底表面在站立和运动时感知局部压力。这些足部负荷特征可能会受到长距离跑步的影响。对于与运动相关的负荷对足底敏感性的生理影响及其与足底足部负荷的关系知之甚少。本研究旨在调查长距离跑步对足底触觉敏感性的急性影响及其与足部负荷特征的关系。假设长距离跑步后足底感觉会降低，并且可能与足部负荷特征有关。在 15 名中年跑步者中，在进行 10 公里跑步前后测量了轻触和足底压力的感觉检测阈值。跑步后，感觉感知阈值没有明显变化，因此无法计算足部敏感性与足部负荷之间的相关性。整个足部（-6.2%，p=0.003；-3.9%，p=0.001）和脚跟（-10.5%，p=0.003；-8.5%，p=0.002）的力-时间积分和最大力均显著降低。此外，外侧中足的最大力显著降低（-6.4%，p=0.002）。总之，亚最大的 10 公里跑步运动似乎对足底敏感性、足底压力分布和峰值力没有明显的急性影响。
