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Associations between air pollution and cardio-respiratory physiological measures in older adults exercising outdoors
International Journal of Environmental Health Research ( IF 3.2 ) Pub Date : 2019-12-12 , DOI: 10.1080/09603123.2019.1699506
David Stieb 1, 2 , Robin H Shutt 1 , Lisa M Kauri 1, 3 , Sarah Mason-Renton 4, 5 , Li Chen 1 , Mieczyslaw Szyszkowicz 1 , Nina A Dobbin 6, 7 , Marc Rigden 8 , Branka Jovic 1 , Marie Mulholland 9 , Martin S Green 9 , Ling Liu 1 , Guillaume Pelletier 8 , Scott A Weichenthal 6, 10 , Robert E Dales 1, 11 , Julie Andrade 1 , Isaac Luginaah 4
Affiliation  

ABSTRACT

We examined whether exercising indoors vs. outdoors reduced the cardio-respiratory effects of outdoor air pollution. Adults ≥55 were randomly assigned to exercise indoors when the Air Quality Health Index was ≥5 and outdoors on other days (intervention group, n = 37), or outdoors everyday (control group, n = 35). Both groups completed cardio-respiratory measurements before and after exercise for up to 10 weeks. Data were analyzed using linear mixed effect regression models. In the control group, an interquartile range increase in fine particulate matter (PM2.5) was associated with increases of 1.4% in heart rate (standard error (SE) = 0.7%) and 5.6% (SE = 2.6%) in malondialdehyde, and decreases of 5.6% (SE = 2.5%) to 16.5% (SE = 7.5%) in heart rate variability measures. While the hypothesized benefit of indoor vs. outdoor exercise could not be demonstrated due to an insufficient number of intervention days (n = 2), the study provides evidence of short-term effects of air pollution in older adults. ISRCTN #26552763.



中文翻译:

户外运动老年人空气污染与心肺生理指标之间的关联

摘要

我们研究了在室内锻炼与室外锻炼是否会降低室外空气污染对心肺功能的影响。≥55 岁的成年人被随机分配在空气质量健康指数≥5 时在室内锻炼,其他日子在户外(干预组,n = 37)或每天户外(对照组,n = 35)。两组在运动前后都完成了长达 10 周的心肺测量。使用线性混合效应回归模型分析数据。在对照组中,细颗粒物(PM 2.5) 与丙二醛的心率增加 1.4%(标准误差 (SE) = 0.7%)和 5.6%(SE = 2.6%)有关,并且与丙二醛的心率增加 5.6%(SE = 2.5%)至 16.5%(SE = 7.5%) 在心率变异性测量中。虽然由于干预天数不足(n = 2)而无法证明室内运动与室外运动的假设益处,但该研究提供了空气污染对老年人的短期影响的证据。ISRCTN #26552763。

更新日期:2019-12-12
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