Includes bibliographical references and index.

Definitions and measurement / Simon J. Marshall, Gregory J. Welk -- Youth health outcomes / David J. Stensel, Trish Gorely, Stuart J.H. Biddle -- A sociohistorical analysis of U.S. youth physical activity and sedentary behavior / Mary McElroy -- Conceptual perspectives / Claudio R. Nigg, Raheem J. Paxton --

"Couch potatoes" and "wind-up dolls"? : a critical assessment of the ethics of youth physical activity research / Michael Gard -- Biocultural factors in developing physical activity levels / Robert M. Malina -- Youth attitudes / Martin S. Hagger, Nikos L.D. Chatzisarantis -- Motivational characteristics / Stuart J.H. Biddle, Darren C. Treasure, C.K. John Wang --

The role of the self / Peter R.E. Crocker, Kent C. Kowalski, Valerie Hadd -- Youth with movement difficulties / Janice Causgrove Dunn, Donna L. Goodwin -- The family / Brian E. Saelens, Jacqueline Kerr -- Peers / Alan L. Smith, Meghan H. McDonough -- Physical activity levels during the school day / Gareth Stratton, Stuart J. Fairclough, Nicola D. Ridgers --

Organized sport and physical activity promotion / Robert J. Brustad, Runar Vilhjalmsson, Antonio Manuel Fonseca -- Community out-of-school physical activity promotion / David A. Dzewaltowski -- Living environments / Jo Salmon ... [et al.] -- Economic principles / Chad D. Meyerhoefer -- Culturally appropriate research and interventions / Suzanna M. Martinez ... [et al.].