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A comparison of pulmonary function, peripheral and respiratory muscle strength and functional capacity in the heart failure patients with different functional classes [Anatol J Cardiol]
Anatol J Cardiol. 2011; 11(2): 101-106 | DOI: 10.5152/akd.2011.027  

A comparison of pulmonary function, peripheral and respiratory muscle strength and functional capacity in the heart failure patients with different functional classes

Meral Boşnak Güçlü1, Deniz İnal İnce2, Hülya Arıkan3, Sema Savcı3, Erol Tülümen5, Lale Tokgözoğlu6
1Gazi Üniversitesi, Sağlık Bilimleri Fakültesi, Fizyoterapi ve Rehabilitasyon Bölümü, 06500 Beşevler, Ankara, Türkiye
2Hacettepe Üniversitesi, Sağlık Bilimleri Fakültesi, Ankara, Türkiye
3Hacettepe Üniversitesi, Sağlık Bilimleri Fakültesi, Fizik Tedavi ve Rehabilitasyon Bölümü, Ankara
4Hacettepe Üniversitesi, Sağlık Bilimleri Fakültesi, Fizik Tedavi ve Rehabilitasyon Bölümü, Ankara
5Department of Cardiology, Faculty of Medicine, University of Hacettepe, Ankara Turkey
6Department of Cardiology, Faculty of Medicine, Hacettepe University, Ankara

Objective: This cross-sectional, observational study was planned to compare pulmonary function, respiratory and peripheral muscle strength, and functional capacity in different functional classes of heart failure patients. Methods: Thirty-four heart failure patients, in New York Heart Association (NYHA) Class II and III (68.59±9.84 years, left ventricular ejection fraction (LVEF) =34.24±7.59%) were included. Class II and III patients’ pulmonary function was assessed using spirometry, respiratory muscle strength using a mouth pressure device, functional capacity using six minute walk test (6MWT), quadriceps femoris and biceps brachii muscle strength were evaluated using a hand-held dynamometer, and variables were compared. Student t, Chi-square, Mann-Whitney U tests, and Spearman correlation coefficients were used for statistical analysis. Results: There were no statistically significant differences in pulmonary function and respiratory muscle strength between the two groups (p>0.05). The 6MWT distance (328.35±101.56 m; vs. 480.05±104.19 m) quadriceps femoris (218.83±63.62 N; vs. 290.69±115.53 N) and biceps brachii (164.22±44.78 N; vs. 219.19±49.37 N) muscle strength of Class III patients were significantly lower than of Class II patients (p<0.05 for all). The NYHA classification system was significantly correlated with measured and predicted 6MWT distance (r=-0.59, r=-0.65, respectively), biceps brachii muscle strength (r=-0.46, r=-0.40, respectively), and % quadriceps femoris muscle strength (r=-0.43) (p<0.05). Conclusion: Functional capacity and peripheral muscle strength decrease as the illness progresses in heart failure. Pulmonary function and respiratory muscle strength are preserved. The NYHA classification system is a reliable method in the detection of changes in functional capacity and peripheral muscle strength. Changes in functional capacity and peripheral muscle strength are consistent with the NYHA classification system.

Keywords: Heart failure, functional capacity, muscle strength, respiratory muscles, pulmonary function


Meral Boşnak Güçlü, Deniz İnal İnce, Hülya Arıkan, Sema Savcı, Erol Tülümen, Lale Tokgözoğlu. A comparison of pulmonary function, peripheral and respiratory muscle strength and functional capacity in the heart failure patients with different functional classes. Anatol J Cardiol. 2011; 11(2): 101-106


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