Coratella Giuseppe, Cè Emiliano, D'Orlando Antonio, Steri Edoardo, Padovan Riccardo, Spina Oscar La, Esposito Fabio, Longo Stefano
Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy.
Int J Sports Med. 2025 Sep;46(10):759-767. doi: 10.1055/a-2595-3622. Epub 2025 Apr 25.
The present study investigated muscle damage and the repeated-bout effect after a typical Nordic hamstring exercise session. Thirteen trained male adults were recruited. Muscle damage was monitored through eccentric strength, passive range of motion, muscle soreness, and muscle swelling. Assessments were performed at baseline and 1 (day 1), 2 (day 2), 3 (day 3), and 4 (day 4) days after 24 Nordic hamstring exercise repetitions. The procedures were replicated after 4 weeks to examine the repeated-bout effect. After the first bout, the hamstring eccentric strength decreased up to day 3 (effect size range:-2.28/-1.95). The passive range of motion decreased up to day 4 (effect size range:-1.62/-0.64), while the muscle soreness increased on day 2 (effect size=1.63) and day 3 (effect size=1.53). No change in muscle swelling was observed. After the second bout, the hamstring eccentric strength (effect size=- 1.20) decreased only on day 1. The passive range of motion decreased up to day 3 (effect size=- 0.85/-0.34). These changes were by a smaller magnitude compared to the first bout. The first Nordic hamstring exercise bout impaired hamstring strength and passive range of motion, with muscle soreness also perceived, while the second bout reduced muscle damage symptoms and shortened the time to recovery. While recovery is needed when a Nordic hamstring exercise session is performed for the first time, following Nordic hamstring exercise sessions may scarcely interfere with the training routine.
本研究调查了一次典型的北欧式腿弯举训练后的肌肉损伤及重复训练效应。招募了13名受过训练的成年男性。通过离心力量、被动活动范围、肌肉酸痛和肌肉肿胀来监测肌肉损伤。在进行24次北欧式腿弯举训练后的基线以及第1天、第2天、第3天和第4天进行评估。4周后重复这些步骤以检验重复训练效应。第一次训练后，腿弯举离心力量在第3天前一直下降（效应量范围：-2.28/-1.95）。被动活动范围在第4天前一直下降（效应量范围：-1.62/-0.64），而肌肉酸痛在第2天（效应量=1.63）和第3天（效应量=1.53）增加。未观察到肌肉肿胀有变化。第二次训练后，腿弯举离心力量（效应量=-1.20）仅在第1天下降。被动活动范围在第3天前一直下降（效应量=-0.85/-0.34）。与第一次训练相比，这些变化的幅度较小。第一次北欧式腿弯举训练会损害腿弯举力量和被动活动范围，同时也会感觉到肌肉酸痛，而第二次训练则减轻了肌肉损伤症状并缩短了恢复时间。首次进行北欧式腿弯举训练时需要恢复，但后续的北欧式腿弯举训练对训练计划的干扰可能很小。
