J Orthop Sports Phys Ther. 2019 Mar;49(3):136-144. doi: 10.2519/jospt.2019.8587. Epub 2018 Dec 7.
The high rate of running-related injury may be associated with increased peak braking forces (PBFs) and vertical loading rates. Gait retraining has been suggested by some experts to be an effective method to reduce loading parameters.
To investigate whether PBF could be decreased following an 8-session gait retraining program among a group of female recreational runners and which self-selected kinematic strategies could achieve this decrease.
In this exploratory study, 12 female recreational runners with high PBFs (greater than 0.27 body weight) completed an 8-session gait retraining program with real-time biofeedback of braking forces over the course of a half-marathon training program. Baseline and follow-up kinetics and kinematics were analyzed with a repeated-measures analysis of variance.
There was an average reduction of 15% in PBF (-0.04 body weight; 95% confidence interval [CI]: -0.07, -0.02 body weight; P = .001; effect size, 0.62), accompanied by a 7% increase in step frequency (11.3 steps per minute; 95% CI: 1.8, 20.9 steps per minute; P = .024; effect size, 0.38) and a 6% decrease in step length (-5.5 cm; 95% CI: -9.9, -1.0 cm; P = .020; effect size, 0.40), from baseline to follow-up.
The gait retraining program significantly reduced the PBF among a group of female recreational runners. This was achieved through a combination of increased step frequency and decreased step length. Furthermore, the modified gait pattern was incorporated into the runners' natural gait pattern by the completion of the program. Based on these results, the outlined gait retraining program should be further investigated to assess whether it may be an effective injury prevention strategy for recreational runners. This study was registered with ClinicalTrials.gov (NCT03302975).
Prevention, level 4. J Orthop Sports Phys Ther 2019;49(3):136-144. Epub 7 Dec 2018. doi:10.2519/jospt.2019.8587.
较高的跑步相关损伤发生率可能与较高的峰值制动力（PBF）和垂直加载率有关。一些专家建议进行步态再训练以作为一种降低负荷参数的有效方法。
探讨女性休闲跑者在接受 8 节步态再训练课程后，其 PBF 是否会降低，以及哪些自我选择的运动学策略可以实现这一降低。
在这项探索性研究中，12 名 PBF 较高（大于 0.27 倍体重）的女性休闲跑者在半程马拉松训练计划期间，通过实时反馈制动力量完成了 8 节步态再训练课程。采用重复测量方差分析对基线和随访时的动力学和运动学进行分析。
PBF 平均降低了 15%（-0.04 倍体重；95%置信区间：-0.07，-0.02 倍体重；P =.001；效应量，0.62），同时步频增加了 7%（11.3 步/分钟；95%置信区间：1.8，20.9 步/分钟；P =.024；效应量，0.38），步长减少了 6%（-5.5 厘米；95%置信区间：-9.9，-1.0 厘米；P =.020；效应量，0.40），从基线到随访。
步态再训练方案显著降低了女性休闲跑者的 PBF。这是通过增加步频和减少步长来实现的。此外，通过完成该方案，跑者的自然步态模式中融入了修改后的步态模式。基于这些结果，应进一步研究所概述的步态再训练方案，以评估其是否可能成为休闲跑者的一种有效的损伤预防策略。本研究已在 ClinicalTrials.gov 注册（NCT03302975）。
预防，4 级。《美国骨科运动物理治疗杂志》2019 年；49（3）：136-144。2018 年 12 月 7 日电子出版。doi：10.2519/jospt.2019.8587.
