Timing of high-intensity intermittent exercise affects ad libitum energy intake in overweight inactive men.
Valéria Leme Gonçalves Panissa, Ursula Ferreira Julio, David H St-Pierre, Alícia Tavares da Silva Gomes, Renan Santos Caldeira, Fabio Santos Lira, Monica Yuri Takito, Emerson Franchini
Author Information
Valéria Leme Gonçalves Panissa: School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil. Electronic address: valeriapanissa@usp.br.
Ursula Ferreira Julio: School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
David H St-Pierre: Department of Exercise Sciences, Université du Québec à Montréal, Québec, Canada; Centre de Recherche du CHU Sainte-Justine, Montréal, Québec, Canada.
Alícia Tavares da Silva Gomes: School of Public Health, University of São Paulo, São Paulo, Brazil.
Renan Santos Caldeira: Exercise and Immunometabolism Research Group, Postgraduation Program in Movement Sciences, Department of Physical Education, Universidade Estadual Paulista (UNESP), Presidente Prudente, São Paulo, Brazil.
Fabio Santos Lira: Exercise and Immunometabolism Research Group, Postgraduation Program in Movement Sciences, Department of Physical Education, Universidade Estadual Paulista (UNESP), Presidente Prudente, São Paulo, Brazil.
Monica Yuri Takito: School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
Emerson Franchini: School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
The present study sought to clarify the impact of exercise intensity and timing on energy intake and appetite-related blood variables. Fourteen inactive overweight men were included in the study. Firstly, maximal aerobic power (MAP) was measured. Then, participants randomly performed 5 experimental sessions consisting of 30 min of steady-state exercise (SSE) at 50% of MAP, high-intensity intermittent exercise (HIIE) with 30s repetitions at MAP and 30s of passive recovery or no exercise (CTRL). Sessions were performed 1h (SSE and HIIE) or 2.5h (SSE and HIIE) after the consumption of a standardized breakfast. An ad libitum buffet was offered 3.5h after the completion of the breakfast. Absolute energy intake (EI) and relative energy intake (REI) (relative energy intake = energy intake - energy expenditure from exercise) were measured. Appetite (hunger, fullness and desire for specific foods) scores and circulating concentration of insulin and IL-6 were determined at 1h, 1.75h, 2.5h and 3.25h after breakfast while lactate was measured post-exercise. EI was greater after the CTRL session compared to HIIE (5045.9 ± 1873.5 kJ vs. 3716.1 ± 1688.7 kJ). REI was greater for the CTRL session (5045.9 ± 1873.5 kJ) than HIIE (3386.5 ± 1660.1 kJ), HIIE (2508.5 ± 1709.3 kJ) and SSE (3426.6 ± 1788.0 kJ). Higher hunger scores were observed following the CRTL session with respect to those of HIIE. Insulin and IL-6 concentrations were greater after HIIE and SSE with respect to those obtained after HIIE, SSE and CTRL. Lactate concentrations were higher in HIIE and HIIE compared to those of SSE and SSE. These results show that HIIE performed 2.5h after a breakfast reduced appetite (hunger scores) and EI through mechanism that need to be characterized. This approach can be applied to individuals aiming to create an energetic deficit.
