BACKGROUND:Studies have shown that compared with the people with smal muscle strength, the probability of early death due to cardiovascular diseases is reduced by 20%-35% in the people with large muscle strength; the suicide rate of people with strong constitution in the adolescence is 20%-30% lower than that of people with poor constitution, and the possibility of psychosis and mood disorders is also reduced by 65% in the people with strong constitution. Therefore, to enhance the body’s muscle strength can effectively protect human physical and mental health. OBJECTIVE: To regulate the elbow and knee joint in the aspects of thought,qi, and motion through the joint exercise based on TCM principle in order to improve the immune function of human body. METHODS:Sixty male colege students at sophomore year were randomly selected and subject to the joint exercise twice a week, 1 hour once, totaly for 8 weeks. Isokinetic motion, consisting of flexion 60°/s and extension 60°/s, five times, was done and detected with an IsoMed 2000 isokinetic dynamometer for measurement of muscle strength of the elbow and knee joint. RESULTS AND CONCLUSION: After 8 weeks of joint exercise, the flexion and extension peak torque of the elbow, peak torque ratio, and average range of motion were significantly increased (P < 0.01); the flexor work was improved, but the extensor work was reduced slightly; there was a significant difference in the extension peak torque of the knee joint (P < 0.05). These findings indicate that the joint exercise can greatly increase the muscle strength of elbow flexor muscles, but has no effects on the muscle explosive power of the knee joint. In addition, the joint exercise can obviously improve the flexibility and balance and coordination ability.%背景：有研究显示，肌肉力量大的人体患心血管疾病早逝的概率比肌肉力量小的人体要低20%-35%；青少年时期身体较强壮的人体较体质虚的人体的自杀概率要低20%-30%，患精神病和情绪失调的可能性也要低65%。因此，增强人体的肌肉力量能够有效地维护人们的身心健康。 目的：试图通过具有中医原理的健身关节操的锻炼，对人体的肘、膝关节进行意、气、动3方面调节，以期提高人体的免疫功能。 方法：随机抽取高校大二年级60名男大学生作为试验对象，受试者每周进行2次健身关节操锻炼，1 h/次，时间为8周，运用IsoMed等动测试仪连续5次等速运动，屈60(°)/s，伸60(°)/s，测试肘关节和膝关节肌肉力量，采用IsoMed 2000等动测试仪测试受试人员的跨关节肌肉力量指标。 结果与结论：受试者在8周健身关节操锻炼后，肘关节屈、伸峰力矩、峰力矩的比值、平均关节活动范围均显著提高(P <0.01)；在做功方面，屈肌做功有提高，伸肌做功略有下降；膝关节伸峰力矩有显著性差异(P<0.05)。结果提示，健身关节操能较大幅度提高肘关节屈肌群肌肉力量，对膝关节肌肉爆发力没有改善作用，对柔韧素质及平衡协调能力有明显改善。
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