Thorborg Kristian, Bandholm Thomas, Zebis Mette, Andersen Lars Louis, Jensen Jesper, Hölmich Per
Sports Orthopedic Research Center Copenhagen (SORC-C), Arthroscopic Centre Amager, Copenhagen University Hospital, Hvidovre, Italiensvej 1, 2300, Copenhagen S, Denmark.
Physical Medicine and Rehabilitation Research - Copenhagen (PMR-C), and Departments of Orthopaedic Surgery and Physical Therapy, Copenhagen University Hospital, Copenhagen, Denmark.
Knee Surg Sports Traumatol Arthrosc. 2016 Jul;24(7):2346-52. doi: 10.1007/s00167-015-3583-y. Epub 2015 Mar 22.
To investigate the effect on hip-flexion strength of a 6-week hip-flexor training programme using elastic bands as resistance. We hypothesized that the training group, compared to a control group, would increase their hip-flexion strength more.
Thirty-three healthy subjects (45 % females), 24(5) years of age, were included in a randomized controlled trial and allocated to heavy strength training of the hip-flexor muscles or to control (no strength training). Strength training of the hip-flexors (dominant leg) was performed three times 10 min per week for 6 weeks. The strength training group progressed from 15 repetition maximum (RM) (week 1) to 8 RM (week 6). Isometric hip-flexion strength (primary outcome) was measured by a blinded assessor using a reliable test procedure.
In the strength training group, the isometric hip-flexion strength of the trained leg increased by 17 %, (p < 0.001). The between-group difference in hip-flexion strength change in the trained leg (dominant leg, training group) versus the non-trained leg (dominant leg, control group) was significantly different from baseline to follow-up, corresponding to a mean change of 0.34 (95 % CI 0.17-0.52) Nm/kg, in favour of the strength training group (p < 0.001).
Simple hip-flexor strength training using elastic bands as external loading, for only 6 weeks, substantially improves hip-flexor muscle strength. This simple exercise programme seems promising for future prevention and treatment of acute and longstanding hip-flexor injuries, such as acute rectus femoris injuries and longstanding iliopsoas-related pain and impingement.
I.
研究使用弹力带作为阻力进行为期6周的髋屈肌训练计划对髋屈肌力量的影响。我们假设与对照组相比，训练组的髋屈肌力量会有更大幅度的增加。
33名健康受试者（45%为女性），年龄24（5）岁，被纳入一项随机对照试验，并被分配到髋屈肌高强度训练组或对照组（不进行力量训练）。髋屈肌（优势腿）的力量训练每周进行3次，每次10分钟，共6周。力量训练组从第1周的15次最大重复量（RM）逐渐增加到第6周的8 RM。由一位不知情的评估者使用可靠的测试程序测量等长髋屈肌力量（主要结果）。
在力量训练组中，训练腿的等长髋屈肌力量增加了17%（p < 0.001）。训练腿（优势腿，训练组）与未训练腿（优势腿，对照组）之间髋屈肌力量变化的组间差异在基线至随访期间有显著差异，相当于平均变化0.34（95%可信区间0.17 - 0.52）Nm/kg，有利于力量训练组（p < 0.001）。
仅使用弹力带作为外部负荷进行简单的髋屈肌力量训练，为期6周，就能显著提高髋屈肌力量。这个简单的锻炼计划对于未来预防和治疗急性和长期的髋屈肌损伤，如急性股直肌损伤以及长期的髂腰肌相关疼痛和撞击，似乎很有前景。
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