目的:探讨肌氧含量与不同生理指标之间的关系及其评定有氧代谢能力的可行性。方法:22名男子青少年赛艇运动员,按运动水平分为A、B两组,在功率自行车上以逐级递增负荷进行蹬车运动至力竭。A组完成6级负荷,B组完成5级负荷。将探测器固定于运动员右侧股外侧肌,测定运动过程中的肌氧含量,并同步测定摄氧量(VO2)、心率(HR)及血乳酸(BLa)。结果:A组运动员在进入第5级负荷时骨骼肌肌氧水平迅速下降,直到运动结束未达平衡;B组运动员运动开始阶段肌氧水平迅速下降,进入第5级负荷时肌氧水平出现新的平衡。所有受试在负荷较低时肌氧含量呈阶梯状下降,负荷较高时肌氧持续下降,运动停止后肌氧含量迅速超过安静水平。运动过程中,各级负荷末肌氧含量与摄氧量、HR及BLa呈高度负相关(r=-0.943～-0.993)。结果提示:运动时骨骼肌局部肌氧供需失衡可能与无氧阈有关。赛艇运动员递增负荷训练时肌氧含量下降拐点与乳酸拐点有一定的一致性,可考虑用肌氧含量评定赛艇运动员有氧能力。 Objective: To explore the relationship between muscle oxygen content and different physiological indexes and to evaluate the feasibility of aerobic metabolism. Methods: Twenty-two male young rowers were divided into A and B groups according to the level of exercise. The pedal bikes were exhausted on a power bike with increasing load step by step. Group A completed six load, Group B completed five load. The detector was fixed on the right femoral lateral muscle of the athlete. The oxygen content (VO2), heart rate (HR) and blood lactate (BLa) were determined synchronously. Results: The muscle oxygen levels of skeletal muscle decreased rapidly in Group A athletes until the end of exercise. The muscle oxygen levels of Group B athletes decreased rapidly at the beginning of exercise, Balance. All subjects showed a steep decline in the content of muscle oxygen at low load, while the muscle oxygen decreased continuously at higher load, and the content of muscle oxygen rapidly exceeded the resting level after the exercise was stopped. During exercise, the end-stage muscle oxygen content at all levels was highly negatively correlated with oxygen uptake, HR and BLa (r = -0.943-0.993). The results suggest that the imbalance of muscle oxygen supply and demand in skeletal muscles during exercise may be related to anaerobic threshold. Rowing Athletes Increased Load Training Muscle Oxygen Decrease The inflection point and lactic acid inflection point have a certain consistency, consider the use of muscle oxygen content of rowing athletes aerobic capacity.