Sardroodian M, Madeleine P, Voigt M, Hansen E A
Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, Denmark.
Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, Denmark.
Hum Mov Sci. 2014 Aug;36:58-69. doi: 10.1016/j.humov.2014.05.003. Epub 2014 Jun 14.
Changes in voluntary rhythmic leg movement characteristics of freely chosen cadence (reflecting movement frequency) and tangential pedal force profile (reflecting movement pattern) were investigated during 4weeks of (i) heavy hip extension strength training (HET, n=9), (ii) heavy hip flexion strength training (HFT, n=9), and (iii) no intervention (CON, n=9). Training consisted of three 5RM-10RM sets per session, with two sessions/week. Submaximal ergometer cycling was performed before the training period (pretest) and after every week of training (test A1, A2, A3, and posttest). Strength increased by on average 25% in HET and 33% in HFT. Freely chosen cadence was only changed in HET, occurring already after 1week of training. Thus, percentage reductions of cadence in HET at test A1, A2, A3, and posttest, with respect to the pretest value, amounted for maximally on average 17%, or 14rpm, and were larger than the corresponding changes in CON (p=.037). Percentage increases in minimum tangential pedal force in HET at test A1, A2, A3, and posttest, with respect to the pretest value, were larger than the corresponding changes in CON (p=.024). Heavy hip flexion strength training did not cause such alterations.
在为期4周的时间里，对自由选择的节奏（反映运动频率）和切向踏板力曲线（反映运动模式）的自主节律性腿部运动特征变化进行了研究，研究对象包括：（i）高强度髋关节伸展力量训练（HET，n = 9）；（ii）高强度髋关节屈曲力量训练（HFT，n = 9）；以及（iii）无干预组（CON，n = 9）。训练包括每次训练3组，每组重复5 - 10次最大重复量，每周训练2次。在训练期之前（预测试）以及每周训练结束后（测试A1、A2、A3和后测试）进行次最大强度测力计骑行。HET组力量平均增加25%，HFT组力量平均增加33%。自由选择的节奏仅在HET组发生变化，在训练1周后就已出现。因此，与预测试值相比，HET组在测试A1、A2、A3和后测试时节奏的百分比降低最大平均为17%，即14转/分钟，且大于CON组的相应变化（p = 0.037）。与预测试值相比，HET组在测试A1、A2、A3和后测试时最小切向踏板力的百分比增加大于CON组的相应变化（p = 0.024）。高强度髋关节屈曲力量训练未引起此类改变。
