Objective This study aims to investigate the efficacy of two exercise interventions in reducing lower extremity (LE) injuries in novice recreational runners. Methods Novice runners (245 female, 80 male) were randomised into hip and core (n=108), ankle and foot (n=111) or control (n=106) groups. Interventions were completed before running and included exercise programmes focusing on either (1) hip and core or (2) ankle and foot muscles. The control group performed static stretching exercises. All groups were supervised by a physiotherapist and performed the same running programme. Injuries and running exposure were registered using weekly questionnaires during the 24-week study. Primary outcome was running-related LE injury. Results The incidence of LE injuries was lower in the hip and core group compared with the control group (HR 0.66; 95% CI 0.45 to 0.97). The average weekly prevalence of overuse injuries was 39% lower (prevalence rate ratio, PRR 0.61, 95% CI 0.39 to 0.96), and the prevalence of substantial overuse injuries was 52% lower (PRR 0.48, 95% CI 0.27 to 0.90) in the hip and core group compared with the control group. No significant difference was observed between the ankle and foot group and control group in the prevalence of overuse injuries. A higher incidence of acute injuries was observed in the ankle and foot group compared with the control group (HR 3.60, 95% CI 1.20 to 10.86). Conclusion A physiotherapist-guided hip and core-focused exercise programme was effective in preventing LE injuries in novice recreational runners. The ankle and foot programme did not reduce LE injuries and did not protect against acute LE injuries when compared with static stretching. Data are available on reasonable request.

中文翻译：

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髋部和核心锻炼计划可预防成年休闲跑步新手与跑步相关的过度使用损伤：三臂随机对照试验 (Run RCT)

目的 本研究旨在探讨两种运动干预措施在减少休闲跑步新手下肢 (LE) 损伤方面的效果。方法 将新手跑步者（245 名女性，80 名男性）随机分为髋部和核心组（n=108）、踝部和足部组（n=111）或对照组（n=106）。干预措施在跑步前完成，包括侧重于（1）臀部和核心或（2）踝关节和足部肌肉的锻炼计划。对照组进行静态伸展运动。所有小组均由物理治疗师监督并执行相同的跑步计划。在为期 24 周的研究中，每周进行一次问卷调查，记录受伤情况和跑步暴露情况。主要结局是跑步相关的 LE 损伤。结果 与对照组相比，髋部和核心组 LE 损伤的发生率较低（HR 0.66；95% CI 0.45 至 0.97）。每周过度使用伤害的平均患病率降低了 39%（患病率比，PRR 0.61，95% CI 0.39 至 0.96），严重过度使用伤害的患病率降低了 52%（PRR 0.48，95% CI 0.27 至 0.90）。髋部和核心组与对照组相比。踝足组和对照组之间过度使用损伤的发生率没有显着差异。与对照组相比，踝关节和足部组的急性损伤发生率较高（HR 3.60，95% CI 1.20至10.86）。结论 物理治疗师指导的髋部和核心锻炼计划可有效预防休闲跑步新手的 LE 损伤。与静态拉伸相比，踝关节和足部计划并不能减少 LE 损伤，也不能预防急性 LE 损伤。可根据合理要求提供数据。