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Impact of 5-week high-intensity interval training on indices of cardio metabolic health in men.

Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), School of Technology and Sciences, Presidente Prudente, São Paulo, Brazil; Post Graduation Program in Motricity Sciences, São Paulo State University (UNESP), Brazil. Electronic address: fabioslira@gmail.com. Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), School of Technology and Sciences, Presidente Prudente, São Paulo, Brazil; Post Graduation Program in Motricity Sciences, São Paulo State University (UNESP), Brazil. Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), School of Technology and Sciences, Presidente Prudente, São Paulo, Brazil; Post Graduation Program in Physical Therapy, São Paulo State University (UNESP), Brazil. Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), School of Technology and Sciences, Presidente Prudente, São Paulo, Brazil; Department of Physical Education, Federal University of Pernambuco, Recife, Brazil. School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil. Department of Exercise Sciences, Université du Québec à Montréal, Québec, Canada; Centre de Recherche du CHU Sainte-Justine, Montréal, Québec, Canada. Department of Kinesiology, University of Montreal, Montreal, Québec, Canada. Department of Exercise Sciences, Université du Québec à Montréal, Québec, Canada; Department of Kinesiology, University of Montreal, Montreal, Québec, Canada.

Diabetes & metabolic syndrome. 2019;(2):1359-1364
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Abstract

PURPOSE To compare the acute and chronic effects of high-intensity intermittent training (HIIT) and moderate-intensity continuous training (MICT) on indices of cardio-metabolic health: (HDL-c, total cholesterol, triglycerides, heart ratio, and phase angle/PhA) in physically active men. METHODS Twenty active men were randomly allocated to HIIT (n = 10), or MICT (n = 10) for 5 weeks, three times per week. HIIT consisted of running 5 km with 1-min at 100% of maximal aerobic speed interspersed by 1-min passive recovery while subjects in MICT group ran continuously the same 5 km at 70% of maximal aerobic speed. Blood samples were collected at different moments during the first and last exercise session. Before and after 5 weeks of both exercise training protocols, heart ratio (during exercise session) and PhA were measured pre and post-exercise training. RESULTS Fasting HDL-c levels did not change after 5 weeks of HIIT or MICT. Perceptual variation of HDL pre and post training (fed state) tended to differ between HIIT and MICT (p = 0.09). All lipoproteins parameters (HDL-c, total cholesterol, triglycerides and non-HDL) were increased in post-acute exercise session compared to pre-exercise during the first and last training session, these being observed after both training protocols. PhA and heart rate measured at different times during the first and last training session were not affected in both training protocols. CONCLUSION These results indicate that HIIT and MICT modify the post-exercise lipoprotein profile acutely. On the other hand, only HIIT tended to increase HDL-c levels chronically.

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Publication Type : Randomized Controlled Trial

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