Excess Post-exercise Oxygen Consumption Following Acute Aerobic and Resistance Exercise in Lean and Obese Women

Date of Award


Document Type


Degree Name

Doctor of Philosophy (Ph.D.)

Institution Granting Degree

University of Mississippi

Cedarville University School or Department

Kinesiology and Allied Health


Exercise, oxygen consumption, women


The purpose of this study was to investigate the effects of aerobic and resistance exercise on excess post-exercise oxygen consumption (EPOC) and substrate utilization in lean and obese women. Seventeen female subjects between the ages of 18 and 23 participated in this study and were divided into one of two groups based on body composition. The lean group had a body mass index of ≤25 (N = 10) end the obese group had a body mass index of 30-45 (N = 7). All subjects first completed a submax VO 2 test on a Monarch cycle ergometer and a 10-RM of five exercises on a Smith machine. Subjects then returned to the lab for two exercise sessions during menses. A written anxiety survey was answered by each subject prior to each testing session. Diet records of the two days prior to each of the exercise sessions were kept by each subject. The first testing session consisted of performing 3 sets of 10 repetitions at 70% of the pre-determined 10-RM for the following exercises: squat, calf raises, bench press, upright row, and shoulder press. At least two days later, subjects returned to the lab and cycled at 60-65% VO 2 max for a duration that would expend the same number of calories as the resistance session. Anxiety data revealed no differences prior to either exercise session. No differences in the percentage of macro-nutrients were found prior to exercise sessions or between groups. Post-exercise respiratory exchange ratio was similar for both groups. EPOC magnitude or duration did not differ between groups or between exercise sessions. These findings indicate that lean and obese females will respond similarly to exercise at similar relative intensities. It was also concluded that aerobic and resistance exercise of equal caloric expenditure will elicit similar EPOC responses.