运用表面肌电和肌氧分析技术，对23名1级以上皮艇运动员以3种不同桨频负荷(70桨/min、90桨/min和最大桨频)分别在测功仪上进行连续划桨训练过程中相关肌肉工作情况进行研究。结果发现：随桨频负荷的提高，竖脊肌肌电活动增强并伴随着股直肌肌电活动趋弱；与70桨/min相比，最大桨频下肱三头肌氧百分比下降无显著性差异，而左右背阔肌均呈现显著性降低(P<0.05)。结果说明提高划桨频率会造成运动员身体发力构成的变化，随着划桨频率的增大，下肢贡献有所减少，腰腹和背部用力增大，上臂用力增大但不明显。%By applying surface myoelectricity and muscle oxygen analysis technology, the authors study the working conditions related muscles of 23 class 1 or higher kayakers in the process of training for continuous paddling on an er-gometer at 3 different paddling frequency loads (70 strokes/min, 90 strokes/min and maximum paddling frequency) re-spectively, and revealed the following findings:with the increase of paddling frequency load, the myoelectricity activity of erector spinae was intensified, accompanied by the gradual weakening of myoelectricity of rectus femoris;as com-pared with 70 strokes/min, the increase of muscle oxygen percentage of triceps brachii had no significant difference, while the left and right latissimus dorsi showed a significant decrease (P<0.05). The said findings indicated the follow-ings:increasing paddling frequency would cause the changing of kayaker’s body power generation composition;with the increase of paddling frequency, the contribution of lower limbs decreased somewhat, power generated by waist and abdomen and back increased, power generated by upper arms increased but not significantly.
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