Department of Special Didactics, Faculty of Education and Sport Sciences, University of Vigo, 36005 Pontevedra, Spain.
Education, Physical Activity and Health Research Group (Gies-10-DE3), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36208 Vigo, Spain.
Int J Environ Res Public Health. 2022 May 27;19(11):6563. doi: 10.3390/ijerph19116563.
Groin injuries are one of the most prevalent in sports, especially due to the hip adductor muscles’ weakness, which is considered as a risk factor. The Copenhagen adduction exercise (CAE) has been demonstrated to increase the strength of adductor muscles, but its effects on the architectural characteristics and flexibility of the adductors has been little studied. The aim of the present study was to analyse the impact on the muscular architecture and flexibility of the adductor musculature after 8 weeks of CAE-based training and after 4 weeks of subsequent detraining. A sample of 45 active subjects (26.1 ± 2.8 years old) were randomly divided into a control group with no intervention and an experimental group with an intervention based on 8 weeks of CAE training and 4 weeks of subsequent detraining. The muscle thickness of adductors was measured before and after training and detraining using ultrasound imaging and hip abduction range with goniometry. A significant increase in muscle thickness (left leg: +17.83%, d = 1.77, p < 0.001//right leg: +18.38%, d = 1.82, p < 0.001) and adductor flexibility was found in the experimental group (left leg: +7.3%, d = 0.96, p < 0.05//right leg: +7.15%, d = 0.94, p < 0.05), and after detraining, both variables returned to their initial values. These results could indicate that CAE would be a suitable strategy to modify the architecture of the adductors and thus form part of training protocols designed for the prevention and rehabilitation of muscle injuries.
腹股沟损伤是运动中最常见的损伤之一，尤其是由于髋内收肌力量较弱，这被认为是一个风险因素。哥本哈根内收肌锻炼（CAE）已被证明可以增强内收肌的力量，但它对内收肌结构特征和柔韧性的影响研究甚少。本研究旨在分析 8 周 CAE 训练和随后 4 周停训后对内收肌结构和柔韧性的影响。一个由 45 名活跃受试者（26.1±2.8 岁）组成的样本被随机分为对照组（无干预）和实验组（基于 8 周 CAE 训练和随后 4 周停训的干预）。使用超声成像和测角法测量训练和停训前后内收肌的肌肉厚度和髋关节外展范围。实验组发现肌肉厚度（左腿：+17.83%，d=1.77，p<0.001//右腿：+18.38%，d=1.82，p<0.001）和内收肌柔韧性显著增加，停训后，这两个变量均恢复到初始值。这些结果表明，CAE 可能是一种改变内收肌结构的合适策略，从而成为预防和康复肌肉损伤的训练方案的一部分。
