Fernando Gripp1,2, Roberto Carlos Nava3, Ricardo Cardoso Cassilhas1,2, Elizabethe Adriana Esteves1,4, Caíque Olegário Diniz Magalhães1,2, Marco Fabrício Dias-Peixoto1,2, Flávio de Castro Magalhães1,3,2, Fabiano Trigueiro Amorim5,6,7. 1. Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil. 2. Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil. 3. Department of Health, Exercise, and Sports Sciences, Johnson Center B145 MSC04 2610, University of New Mexico, Albuquerque, NM, 87131-0001, USA. 4. Departamento of Nutrition, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil. 5. Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil. amorim@unm.edu. 6. Department of Health, Exercise, and Sports Sciences, Johnson Center B145 MSC04 2610, University of New Mexico, Albuquerque, NM, 87131-0001, USA. amorim@unm.edu. 7. Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil. amorim@unm.edu.
Abstract
PURPOSE: This study investigated the cardiometabolic health of overweight/obese untrained individuals in response to 8 weeks of HIIT and MICT using a field approach, and to 4 weeks of training cessation (TC). METHODS: Twenty-two subjects performed 8 weeks of moderate intensity continuous training (MICT-n = 11) or high-intensity interval training (HIIT-n = 11) (outdoor running), followed by 4 weeks of TC. Cardiorespiratory fitness, body composition, arterial blood pressure, glucose metabolism and blood lipids were measured pre-training (PRE), post-training (POST) and TC. RESULTS: HIIT improved eight indicators of cardiometabolic health ([Formula: see text], BMI, body fat, visceral fat, systolic blood pressure, total cholesterol, fasting glucose and triglycerides-p < 0.05) while MICT only three ([Formula: see text], BMI, and visceral fat-p < 0.05). After 4 weeks of TC, four positive adaptations from HIIT were negatively affected ( [Formula: see text], visceral fat, systolic blood pressure and total cholesterol-p < 0.05) and three in the MICT group ([Formula: see text], BMI and visceral fat, p < 0.05). CONCLUSION: Eight weeks of HIIT performed in a real-world setting promoted a greater number of positive adaptations in cardiometabolic health of individuals with overweight/obese compared to MICT. Most of the positive effects of the HIIT protocol were also found to be longer lasting and maintained after the suspension of high-intensity interval running for 4 weeks. Conversely, all positive effects of MICT protocols were reversed after TC.
PURPOSE: This study investigated the cardiometabolic health of overweight/obese untrained individuals in response to 8 weeks of HIIT and MICT using a field approach, and to 4 weeks of training cessation (TC). METHODS: Twenty-two subjects performed 8 weeks of moderate intensity continuous training (MICT-n = 11) or high-intensity interval training (HIIT-n = 11) (outdoor running), followed by 4 weeks of TC. Cardiorespiratory fitness, body composition, arterial blood pressure, glucose metabolism and blood lipids were measured pre-training (PRE), post-training (POST) and TC. RESULTS: HIIT improved eight indicators of cardiometabolic health ([Formula: see text], BMI, body fat, visceral fat, systolic blood pressure, total cholesterol, fasting glucose and triglycerides-p < 0.05) while MICT only three ([Formula: see text], BMI, and visceral fat-p < 0.05). After 4 weeks of TC, four positive adaptations from HIIT were negatively affected ( [Formula: see text], visceral fat, systolic blood pressure and total cholesterol-p < 0.05) and three in the MICT group ([Formula: see text], BMI and visceral fat, p < 0.05). CONCLUSION: Eight weeks of HIIT performed in a real-world setting promoted a greater number of positive adaptations in cardiometabolic health of individuals with overweight/obese compared to MICT. Most of the positive effects of the HIIT protocol were also found to be longer lasting and maintained after the suspension of high-intensity interval running for 4 weeks. Conversely, all positive effects of MICT protocols were reversed after TC.
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