Effects of six weeks high-intensity interval training and resistance training in adults with obesity and sleep related breathing disorders

Introduction: The effects of high-intensity interval training (HIIT) combined with resistance training (RT) in adults with obesity and sleep-related breathing disorders (SRBDs) is limited.Objective: This study aimed to examine the effects of HIIT combined with RT on subjective sleep disorders in adults with obesity and SRBDs.Material and Methods: This study was a pre- and post-test design. Seventeen adults with obesity and SRBDs were recruited into the study. They received 24 minutes of HIIT and 30 minutes of RT, 3 times/week for 6 weeks. The Epworth sleepiness scale (daytime sleepiness), Berlin questionnaire (snoring and daytime sleepiness category), estimated maximum oxygen consumption (VO( 2 )max), muscle strength using 1-repetition maximum, anthropometric variables, and blood biomarkers were examined at baseline and after 6 weeks of training.Results: The Epworth sleepiness scale, Berlin questionnaire (daytime sleepiness category), and the number of risks associated with sleep apnea using the Berlin questionnaire were significantly decreased after 6 weeks of training (all p<0.01). The estimated VO (2 )max and muscle strength were significantly increased at Week 6 (all p <0.05). Body weight, body mass index, % body fat, and hip circumference were significantly decreased at Week 6 (all p <0.05). No significant changes were observed in blood biomarkers, except for fasting blood glucose (p<0.01).Conclusion: Six weeks of HIIT combined with RT has beneficial effects on subjective sleep disorders, estimated VO (2) max, muscle strength, and most anthropometric variables in adults with obesity and SRBDs.