Sinclair Charlotte, Svantesson Ulla, Sjöström Rita, Alricsson Marie
Department of Sports Science, Linnaeus University, Kalmar, Sweden.
Sahlgrenska Academy, Institute of Neuroscience & Physiology, University of Gothenburg, Gothenburg, Sweden.
J Exerc Rehabil. 2017 Apr 30;13(2):232-239. doi: 10.12965/jer.1734902.451. eCollection 2017 Apr.
In sports, there is a constant discussion about the hyper-pronation and supination of the foot during loading and its relation to injuries or discomfort. The purpose of the present study was to investigate the possible differences in the subtalar joint in the midstance phase of running, between individuals with Pes Planus and Pes Cavus, after 5 min and 45 min of running. Thirty-four subjects, meeting the requirements for Pes Planus (30 feet) and Pes Cavus (35 feet), according to the criteria for Medial Longitudinal Arch-angle, were included in the study. The calcaneal vertical angle, representing the eversion/inversion of the subtalar joint, was measured using with two-dimensional digital analysis and Dartfish Software with the subjects running barefoot on a treadmill, before and after 45 min of outside running wearing shoes. Both individuals with Pes Cavus and Pes Planus showed a significant increase in the calcaneal eversion (<0.05) after 45 min of running. Between the groups, there was a significantly greater eversion of the Pes Planus, on the right foot, after 45 min of running (<0.05) compared to the Pes Cavus. The effect of fatigue evident in the present study suggests that further biomechanical research should be considered when exposing the foot to the repetitive nature of running, conditions most likely responsible for the overrepresented overuse injuries among runners.
在体育领域，关于足部在着地过程中的过度内旋和外旋及其与损伤或不适的关系一直存在讨论。本研究的目的是调查扁平足和高弓足个体在跑步5分钟和45分钟后，跑步中期支撑阶段距下关节可能存在的差异。根据内侧纵弓角度标准，34名符合扁平足（30只脚）和高弓足（35只脚）要求的受试者被纳入研究。在受试者穿着鞋子在户外跑步45分钟前后，让他们赤足在跑步机上跑步，使用二维数字分析和达特鱼软件测量代表距下关节外翻/内翻的跟骨垂直角度。高弓足和扁平足个体在跑步45分钟后，跟骨外翻均显著增加（<0.05）。在两组之间，跑步45分钟后，右脚扁平足的外翻明显大于高弓足（<0.05）。本研究中明显的疲劳效应表明，当足部处于跑步的重复性状态时，应考虑进一步的生物力学研究，这种状态很可能是跑步者中过度使用损伤高发的原因。
