Departments of Anatomy and Physiology, Trinity College Dublin, Ireland.
Department of Kinesiology, Recreation and Sport, Indiana State University, Terre Haute, United States.
Int J Sports Med. 2014 May;35(5):443-50. doi: 10.1055/s-0033-1353215. Epub 2013 Sep 18.
To investigate the effect of a transition program of simulated barefoot running (SBR) on running kinematics and foot-strike patterns, female recreational athletes (n=9, age 29 ± 3 yrs) without SBR experience gradually increased running distance in Vibram FiveFingers SBR footwear over 12 weeks. Matched controls (n=10, age 30 ± 4 yrs) continued running in standard footwear. A 3-D motion analysis of treadmill running at 12 km/h(-1) was performed by both groups, barefoot and shod, pre- and post-intervention. Post-intervention data indicated a more-forefoot strike pattern in the SBR group compared to controls; both running barefoot (P>0.05), and shod (P<0.001). When assessed barefoot, there were significant kinematic differences across time in the SBR group for ankle flexion angle at toe-off (P<0.01). When assessed shod, significant kinematic changes occurred across time, for ankle flexion angles at foot-strike (P<0.001) and toe-off (P<0.01), and for range of motion (ROM) in the absorptive phase of stance (P<0.01). A knee effect was recorded in the SBR group for flexion ROM in the absorptive phase of stance (P<0.05). No significant changes occurred in controls. Therefore, a 12-week transition program in SBR could assist athletes seeking a more-forefoot strike pattern and "barefoot" kinematics, regardless of preferred footwear.
为了研究模拟赤脚跑步（SBR）过渡方案对跑步运动学和足触地模式的影响，9 名无 SBR 经验的女性娱乐运动员（年龄 29±3 岁）在 12 周内逐渐增加在 Vibram FiveFingers SBR 鞋中的跑步距离。10 名匹配的对照组（年龄 30±4 岁）继续穿着标准鞋类跑步。两组均在 12km/h(-1)的跑步机上进行了 3D 运动分析，在干预前后均进行了赤脚和穿鞋的分析。干预后数据表明，SBR 组的前足触地模式比对照组更为明显；两组赤脚（P>0.05）和穿鞋（P<0.001）时均如此。当评估赤脚跑步时，SBR 组在足趾离地时的踝关节跖屈角度在时间上存在显著的运动学差异（P<0.01）。当评估穿鞋跑步时，在足趾离地时（P<0.001）和足趾离地时（P<0.01），以及在吸收阶段的踝关节跖屈角度（P<0.01）和运动范围（ROM）（P<0.01），均出现了明显的运动学变化。在 SBR 组中，记录到吸收阶段的膝关节屈曲 ROM 有膝效应（P<0.05）。对照组没有发生显著变化。因此，SBR 的 12 周过渡方案可以帮助运动员寻求更为前足触地的模式和“赤脚”运动学，而无需考虑他们所喜爱的鞋类。
