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Okamura M, Konishi M, Saigusa Y, Ando S, Nakayama M, Komura N, Sugano T, Tamaura K, Nakamura T. Impact of grip strength and balance function on the exercise capacity in pulmonary hypertension. Eur J Prev Cardiol 2021. [DOI: 10.1093/eurjpc/zwab061.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
【Background】
Patients with pulmonary hypertension (PH) suffer from poor exercise capacity due to impaired oxygenation or reduced cardiac output. However, the relationship between exercise capacity and physical functions remains unclear.
【Purpose】
The purpose of this study is to investigate the relationship between exercise capacity and physical functions in pulmonary hypertension.
【Methods】
From February 2018 to June 2020, 94 patients (61.3 ± 14.7 years old, 69.1% females) with group 1/3/4/5 PH underwent cardiac catheterization, 6-minute walking distance (6MWD), and physical function measurements simultaneously. The physical functions was measured using muscle strength (grip strength, knee extension muscle strength), balance function (one leg standing time), and short physical performance battery (SPPB). Exercise capacity was measured by 6MWD.
【Results】
The study cohort consists of 22/8/60/4 (23.4%/8.5%/63.8%/4.3%) patients with group 1/3/4/5 PH, respectively. The average age of each group was 50.7/64.7/63.1/66.0 years old, respectively. A total of 194 measurements of physical functions were evaluated from 94 patients and employed in multivariate logistic regression analysis using adaptive-LASSO methods with the 6MWD (476.2 ± 107.5m) as a dependent variable. WHO functional class (class II: standardized β=-0.35, 95% confidence interval (CI) [-0.54 - -0.16], p < 0.001), class III: β=-0.60, 95%CI [-0.90 - -0.30], p < 0.001), mixed venous oxygen saturation (SvO2: β=0.11, 95%CI [0.03 - 0.19], p = 0.008), pulmonary vascular resistance (PVR: β=-0.16, 95%CI [-0.25 - -0.07], p < 0.001), grip strength (β=0.20, 95%CI [0.09 - 0.31], p < 0.001), one leg standing time (β=0.10, 95%CI [0.00 - 0.20], p = 0.049) , and 4m gait speed test (β=-0.28, 95%CI [-0.36 - -0.19], p < 0.001) were associated with 6MWD.
【Conclusions】
Grip strength and balance function, as well as SvO2 and PVR, were associated with the exercise capacity in pulmonary hypertension.
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Affiliation(s)
- M Okamura
- Yokohama City University Hospital, Department of Rehabilitation, Yokohama, Japan
| | - M Konishi
- Yokohama City University School of Medicine, Department of Medical Science and Cardiorenal Medicine, Yokohama, Japan
| | - Y Saigusa
- Yokohama City University School of Medicine, Department of Biostatistics, Yokohama, Japan
| | - S Ando
- Tokyo University of Science Faculty of Engineering, Department of Information and Computer Technology, Tokyo, Japan
| | - M Nakayama
- Yokohama City University School of Medicine, Department of Medical Science and Cardiorenal Medicine, Yokohama, Japan
| | - N Komura
- Yokohama City University School of Medicine, Department of Medical Science and Cardiorenal Medicine, Yokohama, Japan
| | - T Sugano
- Yokohama City University School of Medicine, Department of Medical Science and Cardiorenal Medicine, Yokohama, Japan
| | - K Tamaura
- Yokohama City University School of Medicine, Department of Medical Science and Cardiorenal Medicine, Yokohama, Japan
| | - T Nakamura
- Yokohama City University School of Medicine, Department of Rehabilitation Medicine, Yokohama, Japan
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