Barcellona Massimo Giuseppe, Buckley Linda, Palmer Lisa J M, Ormond Roisin M, Owen Gwawr, Watson Daniel J, Woledge Roger, Newham Di
Division of Health & Social Care Research, Faculty of Life Sciences & Medicine, King's College London, London, UK.
Department of Physiotherapy, Faculty of Life Sciences & Medicine, King's College London, London, UK.
BMJ Open Sport Exerc Med. 2017 May 31;3(1):e000160. doi: 10.1136/bmjsem-2016-000160. eCollection 2017.
It is not known whether the effects on altered running style which are attributed to minimalist footwear can be achieved by verbal instructions in standard running shoes (SRS).
To explore the effect of Vibram FiveFingers (VFF) versus SRS plus running instruction on lower extremity spatiotemporal parameters and lower limb joint kinematics.
35 healthy subjects (mean=30 years, 18 females) were assessed on two occasions with 3D motion analysis. At each session subjects ran on a treadmill (3.58 m/s) for 2 min in either VFF or SRS (randomised order); with and without running instruction. Differences between spatiotemporal parameters and lower limb joint kinematics between conditions were assessed using a 2x2 repeated-measures ANOVA.
Wearing VFF significantly increased cadence (p<0.001) and reduced stride length (p<0.01). Prior to initial contact, both instruction and VFF significantly increased foot (p<0.001 and p=0.02, respectively) and ankle (p<0.001 and p=0.02, respectively) plantarflexion, while wearing VFF significantly increased knee extension (p=0.04). At initial contact, instruction significantly increased knee flexion (p=0.04), and foot (p=0.001) and ankle (p=0.03) plantarflexion. At mid-stance and toe-off, instruction significantly increased knee flexion (p=0.048 and p<0.001, respectively) and foot plantarflexion (p<0.001 and p=0.01, respectively). Instruction had a greater effect on increasing knee flexion (p=0.007) and plantarflexion angle (p<0.001) when subjects wore SRS and VFF, respectively.
Alterations in spatiotemporal parameters observed when running in VFF are likely to be attributable to the minimalist footwear. However, the kinematic adaptations observed following instruction suggests that changes in joint angles previously attributed to minimalist footwear alone may be similarly achieved with instruction.
尚不清楚标准跑鞋（SRS）中的口头指导是否能达到与极简主义跑鞋相关的改变跑步方式的效果。
探讨五指鞋（VFF）与SRS加跑步指导对下肢时空参数和下肢关节运动学的影响。
35名健康受试者（平均年龄30岁，18名女性）接受了两次三维运动分析评估。在每次测试中，受试者在跑步机上以3.58米/秒的速度跑步2分钟，分别穿着VFF或SRS（随机顺序）；有或没有跑步指导。使用2×2重复测量方差分析评估不同条件下时空参数和下肢关节运动学之间的差异。
穿着VFF显著增加了步频（p<0.001）并缩短了步长（p<0.01）。在初始接触前，指导和VFF均显著增加了足部（分别为p<0.001和p=0.02）和踝关节（分别为p<0.001和p=0.02）的跖屈，而穿着VFF显著增加了膝关节伸展（p=0.04）。在初始接触时，指导显著增加了膝关节屈曲（p=0.04）以及足部（p=0.001）和踝关节（p=0.03）的跖屈。在支撑中期和离地时，指导显著增加了膝关节屈曲（分别为p=0.048和p<0.001）和足部跖屈（分别为p<0.001和p=0.01）。当受试者分别穿着SRS和VFF时，指导对增加膝关节屈曲（p=0.007）和跖屈角度（p<0.001）的影响更大。
穿着VFF跑步时观察到的时空参数变化可能归因于极简主义跑鞋。然而，指导后观察到的运动学适应表明，先前仅归因于极简主义跑鞋的关节角度变化也可能通过指导类似地实现。
