The purpose of this study was to analyze the effect of combined exercise training to exercise time difference
on blood lipid and growth factors in children. Elementary school children in grades 4-6 were participated in
the 16 week weight-bearing exercise training. Subjects were divided into 3 groups, continuous exercise group
exercised for a day, 3 days per week and intermittent exercise group exercised three times a day, 3 days per
week, control group continued daily life for 16 weeks. Combined exercise training was composed of elastic
band and skipping. Blood lipid profiles and serum IGF-1 and OC level as a growth factor were evaluated. In
the results of the study, for blood lipid test, total cholesterol, triglycerides and LDL-C were decreased but
HDL-C was only increased in the two exercise groups. Finally, osteocalcin which is related with bone growth
and IGF-1 which is related with skeletal muscle growth, two factors were only increased in the two exercise
groups. In conclusion, In combined exercise training for 16 weeks, Both continuous and intermittent exercise
training improved blood lipids and increased serum IGF-1 and OC in children.