Affiliation:
1. Department of Pulmonology, General Hospital “G. Papanikolaou”, 57010 Thessaloniki, Greece
2. MSc Programme in Sleep Medicine, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece
Abstract
Background: Energy balance in Obstructive Sleep Apnea (OSA), a disease closely related to obesity, is disturbed, and physical activity levels are impaired. The role of Continuous Positive Airway Pressure treatment (CPAP) in alleviating the disruptions mentioned above is questioned. The objective of this study is to explore changes in energy expenditure (EE) and physical activity (PA) in obese patients with OSA after CPAP treatment. Methods: An assessment of Basal Metabolic Rate (BMR) via indirect calorimetry (IC) was performed on 24 obese patients (male in the majority (87.5%), mean age of 52.4 ± 9.8 years), newly diagnosed with moderate–severe OSA by polysomnography, at 4-time points: at baseline, at CPAP titration, at the 1-month and the 3-month follow up. Physical activity levels were subjectively estimated using the International Questionnaire of Physical Activity (IPAQ) before and after 3 months of adherent CPAP application. Results: BMR significantly decreased after CPAP treatment (1926 ± 537.8 kcal/d at baseline, 1790 ± 493.7 kcal/d at CPAP initiation, 1680.3 ± 600.8 kcal/d at 1 month, and 1581.3 ± 478.9 kcal/d at 3 months follow up (p < 0.001)). No significant changes in IPAQ were observed over time: baseline median IPAQ: 3894 (1487.5–11,755.5) total MET·min·wk−1, 3-month median IPAQ: 3900 (1512–11,824.5) total MET·min·wk−1. Conclusions: CPAP has an appreciable time effect on the BMR of obese patients with moderate–severe OSA. However, this change is not accompanied by a significant increase in physical activity levels.
Subject
Food Science,Nutrition and Dietetics
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