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You Asked For It: Question Authority

Nieman, David C. Dr.P.H., FACSM

doi: 10.1249/FIT.0b013e31819172ca
DEPARTMENTS: You Asked For It: Question Authority

I am 67 years old, prone to getting sick a lot and hoping that a walking program can help. What is the connection between exercise, immune function, and illness for my age group?

David C. Nieman, Dr.P.H., FACSM, is professor and director of the Human Performance Laboratory, Appalachian State University in Boone, North Carolina; an active researcher; and author of several textbooks on health and fitness. Email your questions to

© 2009 American College of Sports Medicine