The Effect of One-session Moderate and Heavy Resistance Exercise on the Appetite, Glycerol, Serum Glucose and Lactate in Healthy Men

Background and Appetite is one of the factors affecting the energy intake equation and has different control and regulatory levels. One of the probable factors affecting it is physical activity. The purpose of the present study was to examine the effects of moderate and heavy resistance exercise on appetite, glucose, glycerol and lactate of the serum in healthy men. Methods and Materials: In this experimental study, out of the university employees, 13 male volunteers were recruited for the study by their own written informed consent, and were assigned into three modes of control, moderate resistance exercise (with intensity of 70% of 1RM) and heavy resistance exercise (with intensity of 80% of 1RM) groups. The process consisted of 8 different movements arranged in 3 sets with 10 repetitions within 90 minutes. The participant's appetite parameter was recorded by appetite questionnaire before collecting blood samples. Data was analyzed using repeated measures ANOVA in SPSS 13 at a significance level of P<0/05. After correcting the results of plasma volume, no significant changes were observed in the appetite, glycerol and glucose of the serum As caused by moderate and heavy resistance exercise. Appetite decreased immediately after the exercise protocol by 33%, but increased 3 hours after the exercise by 12%, and finally decreased 9-hours after exercise by 26% compared to pre-exercise levels (P<0.05). The results of the study indicate that a one-session moderate and heavy resistance exercise has no significant effect on the appetite if food deprivation and significant negative energy balance do not exist.