Centre for Sport Research, Deakin University, Burwood, Victoria, Australia.
Movement Science, Australian Institute of Sport, Canberra, Australian Capital Territory, Australia.
Scand J Med Sci Sports. 2022 Mar;32(3):543-558. doi: 10.1111/sms.14092. Epub 2021 Nov 24.
This parallel-group randomized controlled trial investigated the effect of concurrent strength and endurance (CSE) training on running performance, biomechanics, and muscle activity during overground running. Thirty moderately trained distance runners were randomly assigned to 10-week CSE training (n = 15; 33.1 ± 7.5 years) or a control group (n = 15; 34.2 ± 8.2 years). Participants ran ≥30 km per week and had no experience with strength training. The primary outcome measure was 2-km run time. Secondary outcome measures included lower limb sagittal plane biomechanics and muscle activity during running (3.89 m s and maximal sprinting); maximal aerobic capacity (V̇O max); running economy; and body composition. CSE training improved 2-km run time (mean difference (MD): -11.3 s [95% CI -3.7, -19.0]; p = 0.006) and time to exhaustion during the V̇O max running test (MD 59.1 s [95% CI 8.58, 109.62]; p = 0.024). The CSE training group also reduced total body fat (MD: -1.05 kg [95% CI -0.21, -1.88]; p = 0.016) while total body mass and lean body mass were unchanged. Hip joint angular velocity during the early swing phase of running at 3.89 m s was the only biomechanical or muscle activity variable that significantly changed following CSE training. CSE training is beneficial for running performance, but changes in running biomechanics and muscle activity may not be contributing factors to the performance improvement. Future research should consider other possible mechanisms and the effect of CSE training on biomechanics and muscle activity during prolonged running under fatigued conditions.
这项平行组随机对照试验研究了在地面跑步过程中，同时进行力量和耐力（CSE）训练对跑步表现、生物力学和肌肉活动的影响。30 名中等训练水平的长跑运动员被随机分配到 10 周的 CSE 训练组（n=15；33.1±7.5 岁）或对照组（n=15；34.2±8.2 岁）。参与者每周跑步距离不少于 30 公里，且没有力量训练经验。主要结局测量指标为 2 公里跑时间。次要结局测量指标包括下肢矢状面生物力学和跑步时的肌肉活动（3.89m/s 和最大冲刺速度）；最大有氧能力（V̇O max）；跑步经济性；以及身体成分。CSE 训练改善了 2 公里跑时间（平均差值（MD）：-11.3 秒[95%置信区间（CI）：-3.7，-19.0]；p=0.006）和 V̇O max 跑步测试中的力竭时间（MD 59.1 秒[95%CI：8.58，109.62]；p=0.024）。CSE 训练组还减少了总体脂肪（MD：-1.05 公斤[95%CI：-0.21，-1.88]；p=0.016），而总体体重和瘦体重没有变化。在 3.89m/s 的跑步早期摆动阶段，髋关节角速度是唯一在 CSE 训练后显著改变的生物力学或肌肉活动变量。CSE 训练对跑步表现有益，但跑步生物力学和肌肉活动的变化可能不是提高表现的因素。未来的研究应该考虑其他可能的机制以及 CSE 训练对疲劳条件下长时间跑步的生物力学和肌肉活动的影响。
