The purpose of this study is to investigate the effect of aerobic and combined exercise on GH in
elementary school students. Aerobic exercise was performed with a treadmill and a step box. The exercise
intensity was within the range of HRR 55 ~ 70%. The combined exercise was performed in the same way
as aerobic exercise and anaerobic exercise. The anaerobic exercise was performed three times a week for
60 minutes using an elastic band.
GH (growth hormone) was measured before and after exercise. Data analysis of this study was analyzed
by ANCOVA using SPSS 18.0 and significance level was conducted at .05. The results obtained through
the above research procedure are as follows
First, in the change of GH, the aerobic exercise group was decreased but not significant, and the
combined exercise group was increased but not significant. There was no significant difference between the
two groups.
Second, in the changes of IGF-1, both the group of aerobic exercise and the group of complex exercise
increased meaningfully and in the contrast between the two groups showed that the group of complex
exercise increased more meaningfully than group of aerobic exercise did.
Third, in the changes of the blood lipids, TG and TC decreased meaningfully in both groups, but the
contrast between the two groups did not show meaningful change. In the change of LDL-C, both groups of
aerobic exercise and complex exercise increased but not meaningfully, and a meaningful change between
two groups was not found. In the change of HDL-C, the group of aerobic exercise increased but was not
meaningful, and the group of complex exercise decreased but was not meaningful. And a meaningful
change between the two groups was not found.
In conclusion, the aerobic exercise and complex exercise gave a positive influence to students by
increasing the students' IGF-1 and by decreasing the level of TG and TC. The difference between aerobic
exercise and complex exercise is that complex exercise positively changes the level of IGF-1.