Effects of Aerobic Exercise on Cardiorespiratory Function and Serum Immunoglobulin Level on Female College Students

摘要

AIM: Decreased cardiorespiratory fitness has been shown to associate with many diseases result from decreasing of cardiorespiratory fitness, and thus the assessment of cardiorespiratory function is a key index to evaluate human health. The aim of this study is to investigate the effects of aerobic exercise with different exercise-duration on cardiorespiratory functions in female college students. METHODS: 45 normal female college students were divided randomly into three groups: control group (n=15), 60 min exercise group (n=15) and 120 min exercise group (n=15). Female students in exercise groups were subjected to 8 week-aerobic exercise training (three times per week). Exercise intensity was controlled by heart rate at 130-160 beats/min. Rest heart rate, basic heart rate, cardiac index, lung capacity and immunoglobulins (IgG, IgA, IgM) concentrations were measured. RESULTS: All 45 female students successfully went through the exercise training. 60 and 120 min exercise significantly enhanced cardiac functions as evidenced by improved heart index (P<0.05), but did not affect the rest and basic heart rates (P＞0.05). Moreover, two protocols of exercise both improve heart index and lung capacity (P<0.05), and the degree of improvement in heart index in 120 min exercise group is better than that in 60 min exercise group (P <0.05). Compared with control and exercise group, 60 min group significantly increase serum IgG level (P <0.05). However, both 60 min and 120 min exercise had no effects on the contents of IgA and IgM. CONCLUTION: Two different duration of aerobic exercise may significantly improve cardiorespiratory functions, and 120 min exercise shows a better improvement than 60 min.