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Related Concept Videos

Lifestyle Factors and Health01:20

Lifestyle Factors and Health

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Lifestyle factors play a critical role in maintaining overall health and preventing chronic diseases. Key elements, such as regular physical activity, a nutritious diet, and abstinence from smoking, can significantly enhance physical, mental, and emotional well-being while reducing the risk of several life-threatening conditions.
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
98

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Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
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Does physical activity attenuate the association between ambient PM2.5 and physical function?

Haiyan Jiang1, Simei Zhang1, Xuecheng Yao1

  • 1Department of Public Health, Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China.

The Science of the Total Environment
|March 2, 2023
PubMed
Summary
This summary is machine-generated.

Physical activity (PA) can mitigate the negative effects of air pollution, specifically particulate matter <2.5 μm (PM2.5), on physical function (PF) in older adults. Regular exercise may protect against the decline in strength and mobility associated with poor air quality.

Keywords:
CHARLSInteractive effectJoint effectPM(2.5)Physical activityPhysical function

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Area of Science:

  • Environmental Health
  • Gerontology
  • Public Health

Background:

  • Aging is associated with a decline in physical function (PF), increasing disability and disease burden.
  • Both air pollution exposure and physical activity (PA) are recognized factors influencing PF.
  • Particulate matter <2.5 μm (PM2.5) is a key component of air pollution with potential health impacts.

Purpose of the Study:

  • To investigate the independent and combined effects of PM2.5 exposure and PA on PF in older adults.
  • To determine if PA can attenuate the negative impact of PM2.5 on physical function.

Main Methods:

  • Utilized data from 4537 participants (aged ≥45 years) in the China Health and Retirement Longitudinal Study (CHARLS) from 2011-2015.
  • Assessed PF using a composite score of grip strength, walking speed, balance, and chair stand tests.
  • Estimated annual PM2.5 exposure and moderate-to-vigorous physical activity (MVPA) levels, employing multivariate linear and linear mixed-effects models.

Main Results:

  • PM2.5 exposure showed a negative association with PF, while PA demonstrated a positive association.
  • A 10 μg/m³ increase in PM2.5 was linked to a 0.025-point decrease in PF score (95% CI: -0.047, -0.003).
  • Increased PA intensity attenuated the detrimental effects of PM2.5 on PF, with PA potentially reversing these adverse impacts.

Conclusions:

  • Physical activity can attenuate the association between air pollution and physical function.
  • PA may serve as a protective behavior against the adverse effects of poor air quality on physical function in older populations.
  • Interventions promoting PA could be crucial for mitigating health risks from air pollution.