【論文摘要】Impact of Physical Activity Volume on Functional Exercise Capacity in Hospital-Based Pulmonary Rehabilitation Participants

【論文摘要】居家身體活動量對接受肺部復原患者其功能性運動能力的影響

李建慈(Chien-Tzu Lee) ； 楊佩瑜(Pei-Yu Yang) ； 謝秉倫(Ping-Lun Hsieh) ； 林筱真(Hsiao-Chen Lin) ； 林佳新(Jia-Shin Lin) ； 王儷穎(Li-Ying Wang)

《物理治療》 43卷2期 (2018/06) Pp. 144-145

https://doi.org/10.6215/FJPT.2018.75.P08

摘要

Background and Purpose: Exercise training, as part of pulmonary rehabilitation (PR) is well known to improve exercise performance in patients with chronic obstructive pulmonary disease (COPD). Patients with COPD often adopt a sedentary lifestyle. Whether concomitant increases of physical activity during hospital-based PR would lead to more improvement of functional exercise capacity remained unclear. The purpose of this study was to exam impact of concomitant physical activity changes on functional exercise capacity during hospital-based PR in patients with COPD. Methods: A total of 24 patients with COPD receiving 8-week PR program at Physical Therapy Center (National Taiwan University Hospital) were included. The hospital-based exercise training consisted of aerobic training using cycle ergometer and resistance training using free weights. All patients were encouraged to increase their daily physical activity with individually tailored walking program. Physical activity was defined according to the physical activity recommendations of American College of Sports Medicine (ACSM) as sedentary (＜ 3.75 Metabolic Equivalent of Task [MET]-hr/wk) or increased (≥ 3.75 MET-hr/wk) based on patient-self-record training log. Functional exercise capacity was measured using six-minute walk test (6MWT) at baseline, and the end of 8-week PR. Results: At baseline, 71% of PR participants were with sedentary lifestyle (17/24) and at the end of 8-week PR, 46% of participants (n = 11) remained sedentary and 54% participants (n = 13) showed increased physical activity. The mean change of distance walked in 6MWT (6MWD) from baseline to the end of PR was 81.7 ± 57.4 m in those participants with increased physical activity which was higher than minimal clinically important difference (MCID = 54 m) and was significantly higher than those remained sedentary (29.7 ± 58.4 m; p = 0.02). However, increased physical activity during PR has no impacts on maximal heart rate (HR) achieved (p = 0.44), lowest arterial oxygen saturation measured (p = 0.19), and dyspnea perceived (p = 0.30) during 6MWT. Conclusion: Patients underwent 8-week hospital-based PR with an increased physical activity presented with greater improvements in functional exercise capacity than those remained with sedentary behavior. Clinical Relevance: The results indicated that concomitant increases of physical activity during hospital-based PR would lead to more improvement of functional exercise capacity in patients with COPD. Strategy to promote physical activity in patients with COPD during PR warrants further investigation.