Renan Santos Caldeira1, Valéria Leme Gonçalves Panissa2, Daniela Sayuri Inoue1, Eduardo Zapaterra Campos3, Paula Alves Monteiro1, Bruna de Melo Giglio4, Gustavo Duarte Pimentel4, Peter Hofmann5, Fábio Santos Lira6. 1. Exercise and Immunometabolism Research Group, Department of Physical Education, Universidade Estadual Paulista (Unesp), School of Technology and Science, Presidente Prudente, São Paulo, Brazil. 2. Department of Sport, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil. 3. Department of Physical Education, Federal University of Pernambuco, Recife, Brazil. 4. Clinical and Sports Nutrition Research Laboratory (Labince), Nutrition Faculty (FANUT) - Federal University of Goiás (UFG), Goiânia, GO, Brazil. 5. Exercise Physiology, Training and Training Therapy Research Group, Institute of Sports Science, University of Graz, Graz, Austria. 6. Exercise and Immunometabolism Research Group, Department of Physical Education, Universidade Estadual Paulista (Unesp), School of Technology and Science, Presidente Prudente, São Paulo, Brazil. Electronic address: fabio.lira@unesp.br.
Abstract
BACKGROUND & AIMS: Studies have postulated High Intensity Intermittent Training (HIIT) as a superior strategy to reduce body fat. The purpose of this study was to compare the effects HIIT and steady-state training (SST) on body composition, leptin, soluble leptin receptor (sOB-R) levels, and hunger perception in physically active non-obese men. METHODS:Twenty men performed five weeks ofHIIT (5 km - 1 min running at 100% speed correspondent to VȩO2peak - vVȩO2peak - interspersed with 1-min passive recovery; n = 10) or SST (5 km at 70% of vVȩO2peak continuously; n = 10) three times a week. Body composition, and hunger perception were assessed at pre- and post-training and were compared by a two-way analysis (group and training period) with repeated measures in the second factor. A fasting time-course (baseline, 24 h, and 48 h after an experimental session of exercise) of leptin and sOB-R levels were measured at pre- and post-five weeks of training and assessed by a three-way analysis (group, period and time of measurement) with repeated measures in the second and third factors. RESULTS: There was no effect on body composition and hunger perception. Leptin was reduced in both groups, while sOB-R was increased post-five weeks of training in HIIT but not in the SST. CONCLUSIONS: Although both training groups exerted alterations in leptin levels, only HIIT was able increased sOB-R levels, this suggest a superior impact on central responses in physically active non-obese men.
RCT Entities:
BACKGROUND & AIMS: Studies have postulated High Intensity Intermittent Training (HIIT) as a superior strategy to reduce body fat. The purpose of this study was to compare the effects HIIT and steady-state training (SST) on body composition, leptin, soluble leptin receptor (sOB-R) levels, and hunger perception in physically active non-obesemen. METHODS: Twenty men performed five weeks of HIIT (5 km - 1 min running at 100% speed correspondent to VȩO2peak - v VȩO2peak - interspersed with 1-min passive recovery; n = 10) or SST (5 km at 70% of vVȩO2peak continuously; n = 10) three times a week. Body composition, and hunger perception were assessed at pre- and post-training and were compared by a two-way analysis (group and training period) with repeated measures in the second factor. A fasting time-course (baseline, 24 h, and 48 h after an experimental session of exercise) of leptin and sOB-R levels were measured at pre- and post-five weeks of training and assessed by a three-way analysis (group, period and time of measurement) with repeated measures in the second and third factors. RESULTS: There was no effect on body composition and hunger perception. Leptin was reduced in both groups, while sOB-R was increased post-five weeks of training in HIIT but not in the SST. CONCLUSIONS: Although both training groups exerted alterations in leptin levels, only HIIT was able increased sOB-R levels, this suggest a superior impact on central responses in physically active non-obesemen.
Authors: Jana Pyšná; Ladislav Pyšný; David Cihlář; Dominika Petrů; Lenka Hajerová Müllerová; Luděk Čtvrtečka; Anna Čechová; Jiří Suchý Journal: Int J Environ Res Public Health Date: 2022-03-05 Impact factor: 3.390