Med Sci Sports Exerc. 2021 Sep 1;53(9):1807-1817. doi: 10.1249/MSS.0000000000002649.
Although lower extremity muscle strength, joint motion, and functional foot alignment are commonly used, time-efficient clinical measures that have been proposed as risk factors for running-related injuries, it is unclear if these factors can distinguish injury resistance in runners.
This study compares clinical measures, with consideration of sex, between recently injured runners (3 months to 1 yr prior), those with a high level of injury resistance who have been uninjured for at least 2 yr, and never-injured runners.
Averaged bilateral values and between-limb symmetry angles of lower limb isometric muscle strength, joint motion, navicular drop, and foot posture index (FPI) were assessed in a cohort of recreational runners, and their injury history was recorded. Differences in clinical measures between injury groupings were examined, with consideration of sex.
Of the 223 runners tested, 116 had been recently injured, 61 had been injured >2 yr ago and were deemed to have acquired reinjury resistance, and 46 were never injured. Plantarflexion was greater in both recently injured (P = 0.001) and acquired reinjury resistance runners (P = 0.001) compared with never-injured runners. Recently injured runners displayed higher hip abduction strength compared with never-injured runners (P = 0.019, η2 = 0.038, small effect size). There were no statistically significant differences in the remaining measures between the injury groupings. With the exception of FPI, there was no interaction between sex and injury grouping for any of the measures.
Commonly used clinical measures of strength, joint motion, and functional foot alignment were not superior in injury-resistant runners compared with recently injured runners, questioning their relevance in identifying future injury resistance of runners.
虽然下肢肌肉力量、关节活动度和功能性足弓排列等常用于评估跑步相关损伤风险的临床指标已经被提出，但这些指标是否可以区分跑步者的受伤抵抗能力尚不清楚。
本研究比较了临床指标，并考虑了性别因素，比较了最近受伤（3 个月至 1 年前）的跑步者、至少 2 年未受伤且具有较高损伤抵抗能力的跑步者和从未受伤的跑步者之间的差异。
对一组休闲跑步者进行了下肢等长肌肉力量、关节活动度、舟骨下降和足弓指数（FPI）的双侧平均值和肢体间对称性角度评估，并记录了他们的受伤史。考虑到性别因素，检查了不同损伤分组之间的临床指标差异。
在 223 名接受测试的跑步者中，116 人最近受伤，61 人受伤超过 2 年且被认为具有再次受伤抵抗能力，46 人从未受伤。与从未受伤的跑步者相比，最近受伤（P = 0.001）和获得再次受伤抵抗能力的跑步者（P = 0.001）的足底屈肌力量更大。与从未受伤的跑步者相比，最近受伤的跑步者的髋关节外展力量更高（P = 0.019，η2 = 0.038，小效应量）。在其他测量指标中，损伤分组之间没有统计学上的显著差异。除 FPI 外，在任何测量指标中，性别与损伤分组之间均无交互作用。
与最近受伤的跑步者相比，具有较高损伤抵抗能力的跑步者的力量、关节活动度和功能性足弓排列等常用临床指标并没有更优越，这质疑了它们在识别跑步者未来损伤抵抗能力方面的相关性。
