Impact to short-term high intensity intermittent training on different storages of body fat, leptin and soluble leptin receptor levels in physically active non-obese men: A pilot investigation
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Data
2018-01-01
Autores
Caldeira, Renan Santos [UNESP]
Panissa, Valéria Leme Gonçalves
Inoue, Daniela Sayuri [UNESP]
Campos, Eduardo Zapaterra
Monteiro, Paula Alves [UNESP]
Giglio, Bruna de Melo
Pimentel, Gustavo Duarte
Hofmann, Peter
Lira, Fábio Santos [UNESP]
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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 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-obese men.
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Body composition, Energy expenditure, High-intensity exercise, Steady-state exercise
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Clinical Nutrition ESPEN.