A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea Patients

Introduction: Obstructive sleep apnea (OSA) is characterized by recurrent airway obstructions, resulting in decreased oxygen levels and disrupted sleep. These episodes can manifest as hypopnea or apnea, affecting respiratory muscle function, lung capacity, and chest compliance. OSA significantly imp...

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Main Authors: Preethi Mohan, Sankaranarayanan Sridevi, Thillai Govindarajan Senthil kumar
Format: Article
Language:English
Published: Jaypee Brothers Medical Publisher 2025-02-01
Series:Indian Journal of Respiratory Care
Subjects:
Online Access:https://www.ijrc.in/doi/IJRC/pdf/10.5005/jp-journals-11010-1145
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author Preethi Mohan
Sankaranarayanan Sridevi
Thillai Govindarajan Senthil kumar
author_facet Preethi Mohan
Sankaranarayanan Sridevi
Thillai Govindarajan Senthil kumar
author_sort Preethi Mohan
collection DOAJ
description Introduction: Obstructive sleep apnea (OSA) is characterized by recurrent airway obstructions, resulting in decreased oxygen levels and disrupted sleep. These episodes can manifest as hypopnea or apnea, affecting respiratory muscle function, lung capacity, and chest compliance. OSA significantly impacts exercise tolerance and aerobic capacity, with severity influencing these limitations. Aim: This study aims to evaluate lung function, respiratory muscle strength (RMS), and functional exercise capacity (FEC) and to investigate how various factors affect respiratory parameters and FEC in individuals with OSA. Methods: The study included 30 patients aged 18–80 years, of both genders, diagnosed with OSA and chronic obstructive pulmonary disease. Those with significant cardiopulmonary, neuromuscular, or orthopedic disorders affecting functional capacity were excluded. Lung function was measured using a Medical International Research (MIR) Spirometer for forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and the FEV1/FVC ratio, while RMS was assessed with a manovacuometer for maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP). FEC was determined using the six-minute walk test. Results: The mean values for FVC, FEV1, and the FEV1/FVC ratio were 1.44 (0.51), 1.29 (0.42), and 92.87 (7.08), respectively. The mean distance covered in the six-minute walk test was 92.35 (52.53). There was a positive correlation in RMS and a positive relationship between lung function and FEC in patients with OSA. Conclusion: The findings indicate a decline in lung function, RMS, and functional capacity in OSA patients.
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spelling doaj-art-84da9972c1424d01916195e2e8f2d77e2025-08-20T02:16:45ZengJaypee Brothers Medical PublisherIndian Journal of Respiratory Care2277-90192321-48992025-02-0113424825210.5005/jp-journals-11010-11457A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea PatientsPreethi Mohan0Sankaranarayanan Sridevi1Thillai Govindarajan Senthil kumar2Department of Cardiopulmonary Physiotherapy, Sri Ramachandra Faculty of Physiotherapy, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Chennai, Tamil Nadu, IndiaSankaranarayanan Sridevi, Department of Cardiopulmonary Physiotherapy, Sri Ramachandra Faculty of Physiotherapy, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Chennai, Tamil Nadu, India, Phone: +91 9841401565Department of Cardiopulmonary Physiotherapy, Sri Ramachandra Faculty of Physiotherapy, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Chennai, Tamil Nadu, IndiaIntroduction: Obstructive sleep apnea (OSA) is characterized by recurrent airway obstructions, resulting in decreased oxygen levels and disrupted sleep. These episodes can manifest as hypopnea or apnea, affecting respiratory muscle function, lung capacity, and chest compliance. OSA significantly impacts exercise tolerance and aerobic capacity, with severity influencing these limitations. Aim: This study aims to evaluate lung function, respiratory muscle strength (RMS), and functional exercise capacity (FEC) and to investigate how various factors affect respiratory parameters and FEC in individuals with OSA. Methods: The study included 30 patients aged 18–80 years, of both genders, diagnosed with OSA and chronic obstructive pulmonary disease. Those with significant cardiopulmonary, neuromuscular, or orthopedic disorders affecting functional capacity were excluded. Lung function was measured using a Medical International Research (MIR) Spirometer for forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and the FEV1/FVC ratio, while RMS was assessed with a manovacuometer for maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP). FEC was determined using the six-minute walk test. Results: The mean values for FVC, FEV1, and the FEV1/FVC ratio were 1.44 (0.51), 1.29 (0.42), and 92.87 (7.08), respectively. The mean distance covered in the six-minute walk test was 92.35 (52.53). There was a positive correlation in RMS and a positive relationship between lung function and FEC in patients with OSA. Conclusion: The findings indicate a decline in lung function, RMS, and functional capacity in OSA patients.https://www.ijrc.in/doi/IJRC/pdf/10.5005/jp-journals-11010-1145apnea–hypopnea indexexercise tolerancefunctional exercise capacitylung functionobstructive sleep apnearespiratory muscles
spellingShingle Preethi Mohan
Sankaranarayanan Sridevi
Thillai Govindarajan Senthil kumar
A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea Patients
Indian Journal of Respiratory Care
apnea–hypopnea index
exercise tolerance
functional exercise capacity
lung function
obstructive sleep apnea
respiratory muscles
title A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea Patients
title_full A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea Patients
title_fullStr A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea Patients
title_full_unstemmed A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea Patients
title_short A Study to Analyze Lung Function, Respiratory Muscle Strength, and Functional Exercise Capacity in Obstructive Sleep Apnea Patients
title_sort study to analyze lung function respiratory muscle strength and functional exercise capacity in obstructive sleep apnea patients
topic apnea–hypopnea index
exercise tolerance
functional exercise capacity
lung function
obstructive sleep apnea
respiratory muscles
url https://www.ijrc.in/doi/IJRC/pdf/10.5005/jp-journals-11010-1145
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