Public Health Policy Evaluation Unit, School of Public Health, Imperial College London, London, UK.
ESRC International Centre for Lifecourse Studies in Society and Health, London, UK.
Int J Behav Nutr Phys Act. 2018 Apr 2;15(1):31. doi: 10.1186/s12966-018-0660-x.
We investigated predictors of two increases in older people's public transport use: initiating public transport use among non-users; and increasing public transport use amongst users. We also investigated associations of these changes with physical activity, Body Mass Index (BMI) and waist circumference.
Data come from the 2008 and 2012 English Longitudinal Study of Ageing (ELSA). Logistic regression assessed predictors of increases in public transport use among adults aged ≥50 years. Gender-stratified logistic and linear models assessed associations of increases in public transport use with changes in physical activity and adiposity.
Those becoming eligible for a free older person's bus pass were more likely to both initiate and increase public transport use (e.g. for initiating public transport use Adjusted Odds Ratio (AORs) 1.77, 95% Confidence Interval 1.35; 2.33). Retiring from paid work was also associated with both initiating and increasing public transport use e.g. AOR 1.57 (1.29; 1.91) for initiating use. Women who increased public transport use had mean BMI 2.03 kg/m lower (- 2.84, - 1.21) at follow up than those who did not, although this was attenuated after adjusting for BMI at baseline (- 0.40 kg/m, - 0.82, 0.01). After adjustment for baseline physical activity those initiating public transport use were more likely to undertake at least some physical activity in 2012 (e.g. AOR for women 1.67, 1.03; 2.72).
Both initiating and increasing public transport use were associated with increased physical activity and may be associated with lower adiposity among women. These findings strengthen the case for considering public transport provision as an effective means of promoting healthier ageing.
我们研究了老年人增加公共交通使用的两个因素：非使用者开始使用公共交通；以及使用者增加公共交通使用。我们还研究了这些变化与身体活动、体重指数（BMI）和腰围的关系。
数据来自 2008 年和 2012 年英国老龄化纵向研究（ELSA）。逻辑回归评估了 50 岁以上成年人增加公共交通使用的预测因素。性别分层逻辑和线性模型评估了增加公共交通使用与身体活动和肥胖变化的关系。
那些有资格获得免费老年人公共汽车通行证的人更有可能开始和增加公共交通使用（例如，开始使用公共交通的调整优势比（AOR）为 1.77，95%置信区间为 1.35；2.33）。从有偿工作退休也与开始和增加公共交通使用有关，例如，开始使用的 AOR 为 1.57（1.29；1.91）。与没有增加公共交通使用的人相比，增加公共交通使用的女性在随访时的 BMI 平均低 2.03 公斤/平方米（-2.84，-1.21），但在调整基线 BMI 后有所减弱（-0.40 公斤/平方米，-0.82，0.01）。在调整基线身体活动后，开始使用公共交通的人更有可能在 2012 年进行至少一些身体活动（例如，女性的 AOR 为 1.67，1.03；2.72）。
开始和增加公共交通使用都与增加身体活动有关，并且可能与女性较低的肥胖有关。这些发现为考虑公共交通提供作为促进健康老龄化的有效手段提供了更多依据。
