| （School of Physical Education，Soochow University，Suzhow 215021，China) Abstract: 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.
Key words: sports physiology； myoelectricity；muscle oxygen；stroke rate；kayak ergometer |
