Ripamonti Mickaël, Colin Denis, Rahmani Abderrahmane
Laboratoire des Activités Physiques et Sportives, Département STAPS, Université du Maine, Faculté des Sciences, Avenue Olivier Messiaen, 72089 Le Mans Cedex 9, France.
Clin Biomech (Bristol). 2008 Jun;23(5):520-6. doi: 10.1016/j.clinbiomech.2007.12.007. Epub 2008 Jan 31.
No study has reported the possibility of establishing torque-velocity and power-velocity relationships for both flexor and extensor trunk muscles. The present study therefore sought to assess these relationships during isokinetic exercise.
Nine healthy male subjects performed series of isokinetic trunk flexions and extensions at six different velocities ranging from 45 degrees s(-1) to 120 degrees s(-1). Trunk flexor and extensor muscles were, respectively, assessed on two separate days. All experiments used a Biodex dynamometer.
Torque-velocity relationships were significantly well described by a linear relationship for both trunk flexor (P<0.01; r=0.92-0.99) and extensor muscles (P<0.05; r=0.82-0.97) in all subjects. Power-velocity relationships exhibited a parabolic shape for all subjects (P<0.05; r=0.96-0.99) for both muscle groups.
Results showed that trunk muscle torque- and power-velocity relationships can be assessed during isokinetic exercise. The findings were in agreement with previous studies of lower and upper limbs. This kind of measurement can therefore be applied in assessing low-back pain patients during rehabilitation.
尚无研究报道建立躯干屈肌和伸肌的扭矩 - 速度以及功率 - 速度关系的可能性。因此，本研究旨在评估等速运动期间的这些关系。
9名健康男性受试者以45度/秒至120度/秒的六个不同速度进行了一系列等速躯干屈伸运动。分别在两天对躯干屈肌和伸肌进行评估。所有实验均使用Biodex测力计。
在所有受试者中，躯干屈肌（P<0.01；r = 0.92 - 0.99）和伸肌（P<0.05；r = 0.82 - 0.97）的扭矩 - 速度关系均能通过线性关系得到显著良好的描述。对于两组肌肉，所有受试者的功率 - 速度关系均呈抛物线形（P<0.05；r = 0.96 - 0.99）。
结果表明，在等速运动期间可以评估躯干肌肉的扭矩和功率 - 速度关系。这些发现与先前关于下肢和上肢的研究一致。因此，这种测量可应用于评估腰痛患者的康复情况。
