Shih Hui-Ting, Teng Hsiang-Ling, Gray Casey, Poggemiller Matthew, Tracy Ian, Lee Szu-Ping
Department of Physical Therapy, University of Nevada, Las Vegas. 4505 S. Maryland Parkway, Box 453029, Las Vegas, NV, 89154, USA.
Department of Physical Therapy, California State University, Long Beach. 1250 Bellflower Boulevard, Long Beach, CA, 90840, USA.
Phys Ther Sport. 2019 Jan;35:89-96. doi: 10.1016/j.ptsp.2018.11.005. Epub 2018 Nov 10.
Previous studies showed that adopting forward trunk lean and forefoot strike patterns may reduce risk of running-related knee injuries. However, the process of learning such forms is unclear. The purpose of the study was to investigate the effects of a 4-week training using simple postural instructions to elicit these changes.
Longitudinal intervention study.
A training included postural instructions: 1) lean your trunk forward, and 2) land on the front part of your feet.
Eighteen recreational runners.
Participants were assessed prior to training (PRE), immediately after the instructions (iPST), during training at 2 weeks (2WK) and 4 weeks (4WK), and 7-10 days after the conclusion of training (RET). Assessment consisted of running trials performed at self-selected and controlled speeds, during which the trunk and foot strike angles were assessed.
Comparing to PRE, forward trunk angle significantly increased by approximately 3.5° and foot strike angle by approximately 7° at 2WK, 4WK and RET.
A 4-week training with simple postural instructions induced significant changes in trunk and foot strike patterns in recreational runners. Future study is needed to develop clinical therapeutic protocols for runners with and at risk of running-related knee injuries.
以往研究表明，采用躯干前倾和前脚掌着地模式可能会降低跑步相关膝关节损伤的风险。然而，学习这些姿势的过程尚不清楚。本研究的目的是调查为期4周的使用简单姿势指导来引发这些变化的训练效果。
纵向干预研究。
一项训练包括姿势指导：1）躯干向前倾，2）前脚掌着地。
18名业余跑步者。
在训练前（PRE）、指导后即刻（iPST）、训练2周（2WK）和4周（4WK）时以及训练结束后7至10天（RET）对参与者进行评估。评估包括以自我选择和控制的速度进行跑步试验，在此期间评估躯干和着地角度。
与PRE相比，在2WK、4WK和RET时，躯干前倾角度显著增加约3.5°，着地角度显著增加约7°。
为期4周的简单姿势指导训练使业余跑步者的躯干和着地模式发生了显著变化。未来需要开展研究，为患有跑步相关膝关节损伤和有此类损伤风险的跑步者制定临床治疗方案。
