Physical activity assessment in children and adolescentsSIRARD, John R; PATE, Russell R.Sports medicine (Auckland). 2001, Vol 31, Num 6, pp 439-454, issn 0112-1642Article

Motivational factors associated with sports program participation in middle school studentsSIRARD, John R; PFEIFFER, Karin A; PATE, Russell R et al.Journal of adolescent health. 2006, Vol 38, Num 6, pp 696-703, issn 1054-139X, 8 p.Article

Cardiorespiratory Fitness in Girls : Change from Middle to High SchoolPFEIFFER, Karin A; DOWDA, Marsha; DISHMAN, Rod K et al.Medicine and science in sports and exercise. 2007, Vol 39, Num 12, pp 2234-2241, issn 0195-9131, 8 p.Article

Prevalence of active commuting at urban and suburban elementary schools in Columbia, SCSIRARD, John R; AINSWORTH, Barbara E; MCLVER, Kerri L et al.American journal of public health (1971). 2005, Vol 95, Num 2, pp 236-237, issn 0090-0036, 2 p.Article

Physical Activity and Screen Time in Adolescents and Their FriendsSIRARD, John R; BRUENING, Meg; WALL, Melanie M et al.American journal of preventive medicine (Print). 2013, Vol 44, Num 1, pp 48-55, issn 0749-3797, 8 p.Article

Objectively Measured Physical Activity in Urban Alternative High School StudentsSIRARD, John R; KUBIK, Martha Y; FULKERSON, Jayne A et al.Medicine and science in sports and exercise. 2008, Vol 40, Num 12, pp 2088-2095, issn 0195-9131, 8 p.Article

Sport participation and physical activity in adolescent females across a four-year periodALLOR PFEIFFER, Karin; DOWDA, Marsha; DISHMAN, Rod K et al.Journal of adolescent health. 2006, Vol 39, Num 4, pp 523-529, issn 1054-139X, 7 p.Article

The relationship of area―level sociodemographic characteristics, household composition and individual-level socioeconomic status on walking behavior among adultsHEARST, Mary O; SIRARD, John R; FORSYTH, Ann et al.Transportation research. Part A, Policy and practice. 2013, Vol 50, pp 149-157, issn 0965-8564, 9 p.Article

Neighborhood Design and Perceptions: Relationship with Active CommutingVOORHEES, Carolyn C; ASHWOOD, Scott; EVENSON, Kelly R et al.Medicine and science in sports and exercise. 2010, Vol 42, Num 7, pp 1253-1260, issn 0195-9131, 8 p.Article

Perceived environmental predictors of physical activity over 6 months in adults : Activity counseling trialSALLIS, James F; SIRARD, John R; KING, Abby C et al.Health psychology (Hillsdale, N.J.). 2007, Vol 26, Num 6, pp 701-709, issn 0278-6133, 9 p.Article

Using pedometers to increase physical activity and improve health : A systematic reviewBRAVATA, Dena M; SMITH-SPANGLER, Crystal; SUNDARAM, Vandana et al.JAMA, the journal of the American Medical Association. 2007, Vol 298, Num 19, pp 2296-2304, issn 0098-7484, 9 p.Article

Physical activity and active commuting to elementary schoolSIRARD, John R; RINER, William F; MCIVER, Kerry L et al.Medicine and science in sports and exercise. 2005, Vol 37, Num 12, pp 2062-2069, issn 0195-9131, 8 p.Article