To the Editor Dr Sink and colleagues1 reported that a 24-month moderate-intensity physical activity program did not improve global or domain-specific cognitive function compared with a health education program in sedentary adults. We have concerns about their working definition of moderate-intensity physical activity, the implementation and monitoring of the intervention, and the intensity of the physical activity intervention.
Poulin MJ, Eskes GA, Hill MD. Physical Activity vs Health Education for Cognition in Sedentary Older Adults. JAMA. 2016;315(4):415. doi:10.1001/jama.2015.16005