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Physical activity and cause-specific mortality: the Rotterdam Study.

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Area of Science:

  • Gerontology and Public Health
  • Epidemiology of Aging
  • Lifestyle Medicine

Background:

  • Physical activity (PA) is linked to reduced all-cause mortality.
  • Specific PA types and their association with mortality in the elderly remain unclear.
  • Understanding PA's impact on cause-specific mortality in older adults is crucial.

Purpose of the Study:

  • To investigate the association between various types of physical activity and all-cause mortality in older adults.
  • To examine the relationship between total physical activity and cause-specific mortality in this demographic.
  • To determine if different physical activities offer varying protective effects against mortality.

Main Methods:

  • Prospective population-based study (Rotterdam Study) with 7225 older adults (mean age 70).
  • Cox proportional hazard models used to assess associations between PA types (total, walking, cycling, domestic work, sports, gardening) and mortality.
  • Deaths classified by cause (CVDs, cancer, infections, etc.); follow-up excluded initial 5-10 years to mitigate reverse causation.

Main Results:

  • High total PA was associated with significantly lower mortality risk (HR 0.69 for all-cause).
  • Significant reductions in mortality risk observed for cardiovascular diseases (HR 0.69), chronic lung diseases (HR 0.44), infections (HR 0.47), and other causes (HR 0.56).
  • All assessed types of physical activity showed an association with reduced all-cause mortality.

Conclusions:

  • Higher levels of physical activity are linked to decreased mortality from cardiovascular diseases, chronic lung diseases, and infections in older adults.
  • Engaging in any form of physical activity may be beneficial for reducing mortality risk in the elderly population.
  • The findings support public health initiatives promoting physical activity among seniors for longevity and disease prevention.