Repeated sprint in hypoxia as a time-metabolic efficient strategy to improve physical fitness of obese women

Purpose To investigate the training and detraining effects of two different hypoxic high-intensity protocols on cardiorespiratory fitness, maximal fat oxidation and energy contribution in obese women. Methods 82 obese women completed a 12-week training of: (1) interval training in hypoxia (IHT; n =...

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Bibliographic Details
Published in:	European journal of applied physiology 2020-05, Vol.120 (5), p.1051-1061
Main Authors:	Camacho-Cardenosa, Alba, Camacho-Cardenosa, Marta, Brazo-Sayavera, Javier, Timón, Rafael, González-Custodio, Adrián, Olcina, Guillermo
Format:	Article
Language:	eng
Subjects:	Adult Athletic Performance - physiology Biomedical and Life Sciences Biomedicine Double-Blind Method Exercise Female Fitness Heart rate High-Intensity Interval Training Human Physiology Humans Hypoxia Hypoxia - physiopathology Interval training Metabolism Obesity - metabolism Obesity - pathology Obesity - therapy Occupational Medicine/Industrial Medicine Original Article Oxidation Oxygen Consumption Sports Medicine
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Summary:	Purpose To investigate the training and detraining effects of two different hypoxic high-intensity protocols on cardiorespiratory fitness, maximal fat oxidation and energy contribution in obese women. Methods 82 obese women completed a 12-week training of: (1) interval training in hypoxia (IHT; n = 19; 3 min at 90% W max : 3 min at 55–65% W max ; FiO 2 = 17.2%), (2) interval training in normoxia (INT; n = 20; 3 min at 90% W max : 3 min at 55–65% W max ), (3) repeated sprint training in hypoxia (RSH; n = 22; 30 s at 130% W max : 3 min at 55–65% W max ; FiO 2 = 17.2%), and (4) repeated sprint training in normoxia (RSN; n = 21; 30 s at 130% W max : 3 min at 55–65% W max ). V O 2max , workload, time to exhaustion and heart rate were assessed at baseline, after completion of 36 training sessions over 12 weeks and after 4 weeks of detraining. Results Hypoxic training (IHT and RSH) showed a significant positive effect on absolute ( p
ISSN:	1439-6319 1439-6327