Athletes may suffer from low back pain (LBP). Some studies have considered restricted range of motion (ROM) as a risk factor for LBP in athletes; however, ROM has not been evaluated in equestrian athletes (EAs) with LBP. The aims of this research in EAs were (I) to analyze the relationship between lower limb ROM (tightness and asymmetry) and LBP and (II) to determine the reference values for lower limb ROM indicating high risk of LBP. Forty-three young (9–18 years old) EAs were voluntarily recruited in technical training camps. The EAs were assessed for 11 passive lower limb ROMs using the ROM-SPORT I Battery. LBP data were taken at the end of a 1-year period through a questionnaire. Binary logistic regression and receiver operating characteristic curves were calculated. Sixty-seven percent of EA had suffered LBP. Hip adduction (OR = 1.347, medium; p = 0.015) and knee flexion (OR = 1.109, small; p = 0.023) were predictors of LBP in EAs. A hip adduction of 26° and knee flexion of 128° were found to be the optimal cutoff values for predictive screening of EAs at high risk of LBP.

中文翻译：

---

马术运动员下肢肌肉的不对称性和紧绷性：它们是背痛的预测因素吗？

运动员可能会遭受腰痛 (LBP)。一些研究认为运动受限（ROM）是运动员 LBP 的危险因素；然而，尚未在患有 LBP 的马术运动员 (EA) 中评估 ROM。这项 EA 研究的目的是 (I) 分析下肢 ROM（紧绷和不对称）与 LBP 之间的关系，以及 (II) 确定下肢 ROM 的参考值，表明 LBP 的高风险。43 名年轻（​​9-18 岁）的 EA 被自愿招募到技术训练营中。使用 ROM-SPORT I 电池评估了 11 个被动下肢 ROM 的 EA。LBP 数据是在 1 年期结束时通过问卷获取的。计算二元逻辑回归和接收者操作特征曲线。67% 的 EA 患有 LBP。髋内收（OR = 1.347，中等；p = 0.015）和膝关节屈曲（OR = 1.109，小；p = 0.023）是 EA 中 LBP 的预测因子。发现髋关节内收 26° 和膝关节屈曲 128° 是预测筛查 LBP 高风险 EA 的最佳临界值。