Efeito de uma sessão de exercício intervalado de alta intensidade e exercício contínuo de moderada intensidade sobre marcadores de apetite em homens com obesidade

Abstract

Introduction: Physical exercise is considered a fundamental strategy in the treatment of obesity by promoting increase in the caloric deficit. Recent evidence suggests that high-intensity exercise can induce physiological changes that suppress appetite, decreasing caloric intake, a phenomenon known as exercise-induced anorexia (EIA). Objective: compare the acute effect of high intensity interval exercise (HIIE) and continuous moderate intensity exercise (ECM) on energy intake and appetite perception in obese men. Methods: The study was characterized as a randomized clinical trial in cross-over design. Fifteen volunteers (31.0 ± 6.1 years, 31.0 ± 6.0 kg/ m², 40.1 ± 2.2% body fat) underwent three experimental sessions, seven days apart: I) HIIE ( 10x 1 min at 90% of maximal heart rate [HRmax] + 1 min active recovery), II) ECM (20min to 70% of HRmax) and III) Control (without exercise). A standardized meal was offered 60 min before each session. Appetite perception (hunger, satiety, fullness and perspective food consumption) were evaluated through a visual analogue scale (VAS) in three moments: 1) Pre-session, 2) Post-session and 3) one hour after session. Energy intake was assessed one hour after session with an ad libitum meal and the consumption throughout the day (24hrs) was analyzed with a estimated food record. ANOVA Two-way with repeated measures was used to analyze the differences between conditions and moments on appetite perception and ANOVA with repeated measures to assess the differences between conditions on energy intake in ad libitum and 24hrs. Results: There were no significant differences on hunger [F (1.3, 17.5) = 0.00, p = 0.972], satiety [F (1.3, 17.5) = 0.00, p = 0.972], fullness [F (2, 28) = 0.13, p = 0.876] and prospective food consumption [F (2, 28) = 0.76, p = 0.476] between conditions. As well as no significant differences on energy intake were observed during ad libitum meal: CON (674,5 ± 252,1), ECM (666,7± 213,8) e HIIE (689,6± 263,8kcal) [F (2, 28) = 0.13, p = 0.877] and throughout the day CON (2857,6 ± 867,2), ECM (2608,5± 595) e HIIE (2556,1± 489,5kcal) [F (2, 28) = 1.54, p = 0.233].Conclusion: A single session of HIIE and ECM did not modified appetite and energy intake 60 min after and during the day following exercise in obese man.