The Influence of Physical Fitness on Respiratory Muscle Strength in the Elderly

Abstract

Background: One of the consequences of aging process is the reduction in respiratory muscle strength. So, this study sought to determine the level of physical fitness that influences respiratory muscle strength among participants in a program for senior citizens. Methods: We evaluated 55 elderly between 60 and 80 years, of both sexes, with no history of respiratory disease. The participants were evaluated measuring the maximal in spiratory (MIP) and expiratory (MEP) pressures and applying the IPAQ questionnaire to assess their level of physical activity. The groups were compared using ANOVA test followed by Tukey’s test with a significance level of 5%. Results: 27.3% of the elderly were classified as active, 43.6% as irregularly active, and 29.1% as sedentary. The MIP values for the active (82.7 cmH2O) and irregularly active groups (80.4 cmH2O) were higher than those observed for the sedentary group (62.5 cmH2O) (p < 0.05), and there was no significant difference between the active and irregularly active groups. Conclusion: This study demonstrated that more active elderly, regardless of the level or duration of activity, have higher inspiratory muscle strength than the sedentary ones.