The effects of an aerobic circuit training program on cardiorespiratory endurance, metabolic control and muscular strength in adolescent males with Type I diabetes mellitus

Date of Award




Degree Name

Doctor of Education (Ed.D.)


Teaching and Learning

First Committee Member

Arlette C. Perry, Committee Chair


The purpose of this investigation was to assess the effects of a 12-week aerobic circuit training program on maximum oxygen consumption (VO$\sb2$), cardiac output (Q), total cholesterol, high density lipoprotein (HDL-C), low density lipoprotein (LDL-C), glycosylated hemoglobin A$\sb1$c(HbA$\sb1$c), insulin tolerance, percent body fat and muscular strength in 10 male adolescents with Type I diabetes and 11 non-diabetic male adolescents, aged 12-21 years.Initial measurements were determined from fasting blood samples for cholesterol and cholesterol fractions, HbA$\sb1$c, triglycerides and insulin tolerance. In addition, a graded maximal exercise stress test was performed to determine maximum oxygen uptake (VO$\sb2$) and cardiac output. All tests were repeated at the conclusion of the exercise training.The training consisted of a 45-minute aerobic circuit, 3 times per week, which included 30 different activities divided into 5 aerobic stations: jogging, rowing, cycling, a combination leg-arm ergometer and stair climbing, along with 25 stations emphasizing calisthenics, flexibility and weight training. Subjects were monitored for pulse rates and workloads during each session.A 2 x 2 ANOVA with repeated measures was utilized with group (diabetic, non-diabetic) as the between subject factor and time (pre, post) as the within subject factor. Statistical significance was accepted at the p =.05 level.The results of the study showed significant increases in VO$\sb{\rm2\ max}$ resting cardiac output, and muscular strength in both the diabetic and non-diabetic groups. In addition, significant decreases in LDL-C and HbA$\sb1$c were evident in the diabetic group.The results of this study indicated that a program of aerobic circuit training is effective in improving cardiorespiratory endurance, metabolic control and muscular strength in Type I adolescent diabetics. Furthermore, this study demonstrates that Type I diabetic adolescents may safely participate in aerobic circuit training, and that they exhibit training responses comparable to those observed in non-diabetic subjects.


Biology, Animal Physiology; Education, Physical

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