Former HALO researcher Dr. David Thivel and HALO researchers Dr. Jean-Philippe Chaput, Dr. Kristi Adamo and Dr. Gary Goldfield are authors on a paper, “Is Energy Intake Altered By a 10-Week Aerobic Exercise Intervention in Obese Adolescents?,” that was recently published in Physiology & Behavior. Citations details and a summary of the paper are below.
Thivel D, Chaput JP, Adamo KB, Goldfield GS. Is energy intake altered by a 10-week aerobic exercise intervention in obese adolescents? Physiol Behav. 2014 Jun 19;135C:130-134.
ABSTRACT: Aim. To examine energy intake adaptations to a 10-week aerobic exercise program in obese adolescents. Methods. Twenty-six 12-17year old obese adolescents were asked to cycle twice a week for an hour in a research laboratory. Body composition, aerobic fitness (submaximal fitness test) and energy intake (3-day food record) were assessed before and immediately after the 10-week intervention. Results. The average time spent pedaling per session was 55.3±12.1min for a mean energy expenditure of 2196±561kJpersession. The intervention produced significant improvements in percentage of body fat (44.5±10.6% vs. 43.4±9.8%; p<0.05) but no significant weight and fat-free mass change. Peak workload (79.5±20.8W vs. 87.3±17.6W; p<0.05) and peak heart rate (174.6±18.7bpm vs. 166.2±21.0bpm; p<0.01) were improved. The mean total daily energy intake (in kJ/day) showed a tendency to decrease through the intervention (7440±1744 to 6740±2124kJ; p=0.07) but a high inter-individual variability observed in the energy intake response to the intervention may explain the non-significant association between the energy intake response and weight loss. Conclusion. A 10-week aerobic exercise program may result in a small decrease in energy intake and an associated decrease in percentage of body fat but no weight loss in obese adolescents. This lack of weight loss could be explained by a decrease in spontaneous energy expenditure outside the intervention sessions.