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Comment & Response
November 2015

Physical Activity Is Key for Successful Aging—ReplyEven a Little Is Good

Author Affiliations
  • 1Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
  • 2Harvard Medical School, Boston, Massachusetts
JAMA Intern Med. 2015;175(11):1863. doi:10.1001/jamainternmed.2015.4750

In Reply We thank Dr Hupin and colleagues for their comment on the health-related importance of even low levels of moderate- to vigorous-intensity physical activity (MVPA) in older adults. We agree that amounts of MVPA as low as 15 min/d (about 70% of the recommended minimum) can provide important health benefits for older adults.

A previous publication by our group1 examined in detail the low end of the dose-response relationship between physical activity and years of life gained, reporting a benefit of approximately 2 years of life with even 0.1 to 3.75 metabolic equivalent h/wk of leisure time MVPA (ie, ≤50% of the recommended minimum). Thus, previous findings in our pooled analytic cohort support the emphasis on the importance of even low levels of MVPA by Hupin et al.

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