Background

Few studies have examined sedentary behaviour in chronic respiratory disease. The limited evidence suggests that increased levels of sedentary behaviour are associated with increased mortality.

Objectives

This study aimed to compare the level of self-reported sedentary behaviour in people with chronic obstructive pulmonary disease (COPD) and bronchiectasis as well as to identify associations between sedentary time with functional performance measures and health-related quality of life in the chronic respiratory disease group.

Methods

An observational study design was used. Participants completed the Sedentary Behaviour Questionnaire from which average sedentary time (hours/day) was determined. Functional performance was measured using the six-minute walk test, the four-metre gait speed test and the five sit-to-stand test. Health-related quality of life was measured using the St George's Respiratory Questionnaire. Sedentary time was compared between groups using an unpaired t-test. Univariate analysis explored relationships amongst variables.

Results

The convenience sample consisted of 103 people with COPD [52% male; mean ± SD age: 73 ± 9 years, FEV₁% predicted: 56 ± 23] and 33 people with bronchiectasis [52% male; 74 ± 8 years, FEV₁% predicted: 69 ± 25]. Average self-reported sedentary time in COPD was 7.6 ± 2.7 hours/day and in bronchiectasis was 8.0 ± 4.1 hours/day, with no between-group difference (−0.4, 95% CI −1.7, 0.8). No associations were found between sedentary time and any functional performance outcome or with health-related quality of life.

Conclusion

There was no difference in the high sedentary time between people with COPD and bronchiectasis. Sedentary behaviour was not associated with functional performance or disease-related health-related quality of life in people with chronic respiratory disease.

中文翻译：

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慢性阻塞性肺疾病和支气管扩张患者自我报告久坐行为的观察性研究。

背景

很少有研究检查慢性呼吸系统疾病的久坐行为。有限的证据表明，久坐行为增加与死亡率增加有关。

目标

这项研究旨在比较慢性阻塞性肺疾病（COPD）和支气管扩张患者自我报告的久坐行为水平，并确定久坐时间与功能表现指标之间的关联以及与慢性呼吸道疾病相关的健康相关生活质量组。

方法

使用观察性研究设计。参与者完成了久坐行为问卷，从中确定了平均久坐时间（小时/天）。使用六分钟步行测试，四米步态速度测试和五次坐立测试来测量功能性能。与健康相关的生活质量使用圣乔治呼吸问卷进行测量。使用不配对的t检验比较两组之间的久坐时间。单变量分析探讨了变量之间的关系。

结果

便利性样本包括103名COPD患者[52％男性；平均±SD年龄：73±9岁，FEV ₁％预测：56±23]和33例支气管扩张[52％男性；74±8年，预测FEV ₁％：69±25]。在COPD中，自我报告的平均久坐时间为7.6±2.7小时/天，在支气管扩张中为8.0±4.1小时/天，组间无差异（-0.4，95％CI -1.7，0.8）。久坐时间与任何功能表现结果或健康相关生活质量之间均无关联。

结论

慢性阻塞性肺病和支气管扩张患者的久坐时间没有差异。久坐行为与慢性呼吸疾病患者的功能表现或疾病相关的健康相关生活质量无关。