Faculty of Health Sciences (Kinesiology), University of Ontario Institute of Technology, 2000 Simcoe St N, Oshawa, ON, Canada.
College of Health Solutions, Arizona State University, Phoenix, AZ, USA.
BMC Public Health. 2018 Jul 3;18(1):818. doi: 10.1186/s12889-018-5739-4.
Physical activity has been shown to attenuate the age-associated decline in lung function; however, there is little research evaluating different movement behaviours as potential correlates of lung function. Modifiable determinants need to be identified, as the prevalence of chronic respiratory disease is on the rise. The purpose of this study was to investigate associations of self-reported movement behaviours (i.e., sitting time, walking, different intensities of physical activity, and strengthening activities), with lung function in middle-aged and older adults without a respiratory disease, according to their smoking history.
Data from participants of the Canadian Longitudinal Study on Aging were used for analysis (n = 16,839). Lung function was assessed using spirometry. A modified version of the Physical Activity Scale for the Elderly was used to assess sitting time and physical activity levels. Smoking status was classified as non-smoking, < 10 pack years smoking, and 10 or more pack years of smoking. The association between movement behaviours and lung function was assessed using hierarchical linear regression models with all covariates (age, sex, smoking status, body mass index, education, retirement status, and sleep duration) entered into block 1, and all movement behaviours entered into block 2.
All movement behaviours were associated with Forced Expiratory Volume in 1 s (FEV) and Forced Vital Capacity (FVC) % predicted in crude and adjusted models, regardless of smoking status. Sitting time was negatively associated with both FEV (β: -0.094, CI: -0.140, - 0.047) and FVC (β: -0.087, CI: -0.128, -0.045) among those who never smoked, and strength activity was positively associated with both FEV (β: 0.272, CI: 0.048, 0.496) and FVC (β: 0.253, CI: 0.063,0.442) among those who smoked < 10 pack years, as well as with FVC among those who smoked 10 or more pack years (β: 0.309, CI: 0.064, 0.554).
This is the first study to assess the association of different movement behaviours with lung function among middle-aged and older adults without a respiratory disease. These findings indicate that movement behaviours are correlates of lung function, and that they may be modifiable determinants of the age-associated decline in lung function.
体力活动已被证明可减轻与年龄相关的肺功能下降；然而，评估不同运动行为作为肺功能潜在相关因素的研究甚少。需要确定可改变的决定因素，因为慢性呼吸道疾病的患病率正在上升。本研究的目的是根据吸烟史，调查中年和老年人中自我报告的运动行为（即坐时时间、散步、不同强度的体力活动和强化活动）与无呼吸道疾病的肺功能之间的关系。
使用加拿大老龄化纵向研究的数据进行分析（n=16839）。使用肺活量计评估肺功能。使用改良的老年人体力活动量表评估坐时时间和体力活动水平。吸烟状况分为不吸烟、吸烟<10 包年和吸烟 10 包年或以上。使用分层线性回归模型，在进入块 1 时所有协变量（年龄、性别、吸烟状况、体重指数、教育、退休状况和睡眠时间），在进入块 2 时所有运动行为，评估运动行为与肺功能之间的关系。
在未经调整和调整模型中，所有运动行为均与用力呼气量 1 秒率（FEV）和用力肺活量（FVC）%预测值相关，无论吸烟状况如何。从不吸烟的人群中，坐时时间与 FEV（β：-0.094，CI：-0.140，-0.047）和 FVC（β：-0.087，CI：-0.128，-0.045）呈负相关，而力量活动与 FEV（β：0.272，CI：0.048，0.496）和 FVC（β：0.253，CI：0.063，0.442）呈正相关，在吸烟<10 包年的人群中与 FVC 呈正相关（β：0.309，CI：0.064，0.554）。
这是第一项评估中年和老年人中无呼吸道疾病的不同运动行为与肺功能之间关系的研究。这些发现表明，运动行为是肺功能的相关因素，它们可能是与年龄相关的肺功能下降的可改变决定因素。
