Questionnaire assessed moderate to vigorous physical activity of the Finnish youth in 1979-2005

: Nupponen H, Laakso L, Rimpelä A, Pere L, Telama R

: 2010

: Scandinavian Journal of Medicine and Science in Sports

: 1

: 20

: 1

: 20

: 26

: 7

: 0905-7188