Holbein-Jenny Mary Ann, Redfern Mark S, Gottesman Dan, Chaffin Don B
Graduate School of Physical Therapy, Slippery Rock University, Physical Therapy Building, Slippery Rock, PA 16057-1326, USA.
Ergonomics. 2007 Mar;50(3):352-63. doi: 10.1080/00140130601053479.
Slip resistance measurements of shoes and floors are used to evaluate the potential for slip and fall injuries. These measurements are believed to have increased validity when they more closely reflect actual heelstrike biomechanics during locomotion. The purpose of this study was to describe heelstrike kinematics during load carrying to provide data towards improved slip resistance testing. Foot kinematics during load carrying (unladen and carrying from 0 to 13.5 kg) at various cadences (70, 90, 100 steps/min) was recorded. Measures before, during and after heelstrike were analysed. Cadence was an important predictor for all variables measured, associated with changes from 13% to over 100%. The load carried was an important predictor for only the heel slip distance after heelstrike, but this effect needs to be investigated further. These results can be used to improve the fidelity of slip resistance measurements, which is critical to reduce slip and fall injuries in the workplace or during activities of daily living.
对鞋子和地面的防滑性测量用于评估滑倒和跌倒受伤的可能性。当这些测量更紧密地反映运动过程中实际的脚跟撞击生物力学时，人们认为它们具有更高的有效性。本研究的目的是描述负重时的脚跟撞击运动学，为改进防滑性测试提供数据。记录了在不同步频（70、90、100步/分钟）下负重（空载以及负重0至13.5千克）时的足部运动学。分析了脚跟撞击前、撞击期间和撞击后的测量数据。步频是所有测量变量的重要预测指标，相关变化从13%到超过100%。所负重物仅是脚跟撞击后脚跟滑动距离的重要预测指标，但这种影响还需要进一步研究。这些结果可用于提高防滑性测量的逼真度，这对于减少工作场所或日常生活活动中的滑倒和跌倒受伤至关重要。
