Outdoor gait-training has been successful in improving pain and reducing contact time during outdoor running for runners with exercise-related lower leg pain (ERLLP). However, it is unclear if these adaptations translate to gold standard treadmill running and clinical strength assessments. The study purpose was to assess the influence of a 4-week outdoor gait-training intervention with home exercises (FBHE) on treadmill running biomechanics and lower extremity strength compared to home exercises alone (HE) among runners with ERLLP. Seventeen runners with ERLLP were randomly allocated to FBHE and HE groups (FBHE: 3 M, 6F, 23 ± 4 years, 22.0 ± 4.6 kg/m; HE: 3 M, 5F, 25 ± 5 years, 24.0 ± 4.0 kg/m). Both groups completed eight sessions of home exercises over 4 weeks. The FBHE group received gait-training through wearable sensors to reduce contact time. Treadmill running gait and clinical strength assessments were conducted at baseline and 4-weeks. Multivariate repeated measures analyses of variance were used to assess the influence of group and timepoint for all outcomes. The FBHE group demonstrated significantly decreased contact time at 4-weeks compared to baseline and the HE group (Mean Difference [MD] range: −42 ms – −39 ms; p-range: <0.001–0.02). The FBHE group had significantly increased cadence (MD: +21 steps/min; p = 0.003) and decreased loading impulse (MD: −51, p < 0.001) during treadmill running at 4-weeks compared to the HE group. Strength did not significantly differ adjusting for multiple comparisons (p > 0.007). The outdoor FBHE intervention transferred to favorable changes in treadmill running biomechanics. Clinicians treating runners with ERLLP patients should implement data-driven outdoor gait-training to maximize patient benefits across running locations.

中文翻译：

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将户外步态训练转移到跑步机上跑步生物力学和力量测量：一项随机对照试验

户外步态训练已成功改善患有运动相关小腿疼痛 (ERLLP) 的跑步者在户外跑步时的疼痛并减少接触时间。然而，尚不清楚这些适应是否转化为黄金标准跑步机跑步和临床力量评估。该研究的目的是评估 ERLLP 跑步者与单独的家庭锻炼 (HE) 相比，为期 4 周的户外步态训练干预与家庭锻炼 (FBHE) 对跑步机跑步生物力学和下肢力量的影响。 17 名 ERLLP 跑步者被随机分配到 FBHE 和 HE 组（FBHE：3 M、6F、23 ± 4 岁、22.0 ± 4.6 kg/m；HE：3 M、5F、25 ± 5 岁、24.0 ± 4.0 kg/m） ）。两组在 4 周内完成了 8 次家庭练习。 FBHE 小组通过可穿戴传感器接受步态训练，以减少接触时间。在基线和 4 周时进行跑步机跑步步态和临床力量评估。使用多变量重复测量方差分析来评估组和时间点对所有结果的影响。与基线和 HE 组相比，FBHE 组在 4 周时的接触时间显着减少（平均差 [MD] 范围：−42 ms – −39 ms；p 范围：<0.001–0.02）。与 HE 组相比，FBHE 组在 4 周的跑步机跑步过程中步频显着增加（MD：+21 步/分钟；p = 0.003），负荷脉冲降低（MD：-51，p < 0.001）。多重比较调整后强度没有显着差异 (p > 0.007)。户外 FBHE 干预带来了跑步机跑步生物力学的有利变化。治疗 ERLLP 患者跑步者的临床医生应实施数据驱动的户外步态训练，以最大限度地提高患者在跑步地点的利益。