Is physical activity or physical fitness more important in defining health benefits?BLAIR, Steven N; YILING CHENG; HOLDER, J. Scott et al.Medicine and science in sports and exercise. 2001, Vol 33, Num 6, pp S379-S399, issn 0195-9131, SUPConference Paper

Physical activity and self-reported, physician-diagnosed osteoarthritis : is physical activity a risk factor?YILING CHENG; MACERA, C. A; DAVIS, D. R et al.Journal of clinical epidemiology. 2000, Vol 53, Num 3, pp 315-322, issn 0895-4356Article