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.
Arem H, Matthews CE, Lee I. Physical Activity Is Key for Successful Aging—ReplyEven a Little Is Good. JAMA Intern Med. 2015;175(11):1863. doi:10.1001/jamainternmed.2015.4750