Bradley Judy M, Wilson Jason J, Hayes Kate, Kent Lisa, McDonough Suzanne, Tully Mark A, Bradbury Ian, Kirk Alison, Cosgrove Denise, Convery Rory, Kelly Martin, Elborn Joseph Stuart, O'Neill Brenda
Centre for Health and Rehabilitation Technologies, Institute for Nursing and Health Research, Ulster University, Newtownabbey, Northern Ireland, UK.
Northern Ireland Clinical Research Network: Respiratory Health, Belfast Health and Social Care Trust, Belfast, Northern Ireland, UK.
BMC Pulm Med. 2015 May 13;15:61. doi: 10.1186/s12890-015-0046-7.
The impact of bronchiectasis on sedentary behaviour and physical activity is unknown. It is important to explore this to identify the need for physical activity interventions and how to tailor interventions to this patient population. We aimed to explore the patterns and correlates of sedentary behaviour and physical activity in bronchiectasis.
Physical activity was assessed in 63 patients with bronchiectasis using an ActiGraph GT3X+ accelerometer over seven days. Patients completed: questionnaires on health-related quality-of-life and attitudes to physical activity (questions based on an adaption of the transtheoretical model (TTM) of behaviour change); spirometry; and the modified shuttle test (MST). Multiple linear regression analysis using forward selection based on likelihood ratio statistics explored the correlates of sedentary behaviour and physical activity dimensions. Between-group analysis using independent sample t-tests were used to explore differences for selected variables.
Fifty-five patients had complete datasets. Average daily time, mean(standard deviation) spent in sedentary behaviour was 634(77)mins, light-lifestyle physical activity was 207(63)mins and moderate-vigorous physical activity (MVPA) was 25(20)mins. Only 11% of patients met recommended guidelines. Forced expiratory volume in one-second percentage predicted (FEV1% predicted) and disease severity were not correlates of sedentary behaviour or physical activity. For sedentary behaviour, decisional balance 'pros' score was the only correlate. Performance on the MST was the strongest correlate of physical activity. In addition to the MST, there were other important correlate variables for MVPA accumulated in ≥10-minute bouts (QOL-B Social Functioning) and for activity energy expenditure (Body Mass Index and QOL-B Respiratory Symptoms).
Patients with bronchiectasis demonstrated a largely inactive lifestyle and few met the recommended physical activity guidelines. Exercise capacity was the strongest correlate of physical activity, and dimensions of the QOL-B were also important. FEV1% predicted and disease severity were not correlates of sedentary behaviour or physical activity. The inclusion of a range of physical activity dimensions could facilitate in-depth exploration of patterns of physical activity. This study demonstrates the need for interventions targeted at reducing sedentary behaviour and increasing physical activity, and provides information to tailor interventions to the bronchiectasis population.
NCT01569009 ("Physical Activity in Bronchiectasis").
支气管扩张对久坐行为和身体活动的影响尚不清楚。探索这一点对于确定身体活动干预的必要性以及如何针对该患者群体调整干预措施非常重要。我们旨在探索支气管扩张患者久坐行为和身体活动的模式及相关因素。
使用ActiGraph GT3X+加速度计对63例支气管扩张患者进行为期7天的身体活动评估。患者完成了：与健康相关的生活质量问卷和对身体活动的态度问卷（基于行为改变的跨理论模型（TTM）改编的问题）；肺功能测定；以及改良往返跑测试（MST）。使用基于似然比统计的向前选择进行多元线性回归分析，以探索久坐行为和身体活动维度的相关因素。使用独立样本t检验进行组间分析，以探索选定变量的差异。
55例患者有完整数据集。平均每日久坐行为时间为634（77）分钟，轻度生活方式身体活动为207（63）分钟，中度至剧烈身体活动（MVPA）为25（20）分钟。只有11%的患者达到推荐指南。一秒用力呼气容积预测值（FEV1%预测值）和疾病严重程度与久坐行为或身体活动无关。对于久坐行为，决策平衡“益处”得分是唯一的相关因素。MST的表现是身体活动最强的相关因素。除MST外，对于累积时长≥10分钟的MVPA（生活质量问卷 - 社会功能）以及活动能量消耗（体重指数和生活质量问卷 - 呼吸症状），还有其他重要的相关变量。
支气管扩张患者的生活方式大多缺乏运动，很少有人达到推荐的身体活动指南。运动能力是身体活动最强的相关因素，生活质量问卷的维度也很重要。FEV1%预测值和疾病严重程度与久坐行为或身体活动无关。纳入一系列身体活动维度有助于深入探索身体活动模式。本研究表明需要针对减少久坐行为和增加身体活动的干预措施，并提供了针对支气管扩张人群调整干预措施的信息。
NCT01569009（“支气管扩张中的身体活动”）
