Cheung Roy T H, Ng Gabriel Y F
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
Phys Ther. 2008 May;88(5):620-8. doi: 10.2522/ptj.20060323. Epub 2008 Feb 14.
Previous studies have demonstrated an increase in foot pronation with mileage in runners. Motion control footwear was designed to check excessive foot motions, but its clinical efficacy, especially in terms of pedographic analysis, has not been well reported. The purposes of this study were to investigate the changes in plantar force in people when running with motion control shoes and to compare pedographic measurements obtained in 2 footwear testing conditions (wearing motion control shoes and wearing neutral shoes) at the beginning and end of a 1.5-km running session.
Twenty-five recreational runners who had > or = 6 degrees of foot pronation participated in the study.
An insole sensor was used to register the plantar force of the subjects before and after running 1.5 km in different shoe conditions.
There was no change in the magnitude and distribution pattern of plantar force with the motion control shoes after the 1.5-km run. With the neutral shoes, however, there was an increase in mean peak force under the medial midfoot (364-418 N, 15% increase) and first metatarsal head (524-565 N, 8% increase) toward the end of the running bout.
The plantar force on the medial foot structures increased with mileage of running with neutral shoes but not with motion control shoes. This finding has implications for injury prevention with footwear selection for recreational runners who have more than 6 degrees of foot pronation.
先前的研究表明，跑步者的足部内旋会随着跑步里程的增加而增多。运动控制型鞋类旨在抑制足部的过度运动，但其临床疗效，尤其是在足印分析方面，尚未得到充分报道。本研究的目的是调查穿着运动控制型鞋子跑步时人们足底压力的变化，并比较在1.5公里跑步时段开始和结束时，在两种鞋类测试条件（穿着运动控制型鞋子和穿着中性鞋子）下获得的足印测量结果。
25名足部内旋≥6度的业余跑步者参与了本研究。
使用鞋垫式传感器记录受试者在不同鞋类条件下跑完1.5公里前后的足底压力。
跑完1.5公里后，穿着运动控制型鞋子时，足底压力的大小和分布模式没有变化。然而，穿着中性鞋子时，在跑步时段接近尾声时，足内侧中足下方的平均峰值力（从364牛增加到418牛，增加了15%）和第一跖骨头下方的平均峰值力（从524牛增加到565牛，增加了8%）有所增加。
穿着中性鞋子跑步时，足部内侧结构上的足底压力会随着跑步里程的增加而增加，但穿着运动控制型鞋子时则不会。这一发现对于为足部内旋超过6度的业余跑步者选择鞋类以预防损伤具有启示意义。
