United States Department of Health and Human Services (1996) Physical activity and health: A report of the surgeon general: Atlanta, GA: Public Health Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion.
 Brown, W.J., Burton, N.W. and Rowan, P.J. (2007) Updating the evidence on physical activity and health in women. American Journal of Preventive Medicine, 33, 404-411. http://dx.doi.org/10.1016/j.amepre.2007.07.029
 Mora, S., Cook, N., Buring, J.E., Ridker, P.M. and Lee, I.M. (2007) Physical activity and reduced risk of car-diovascular events: Potential mediating mechanisms. Circulation, 116, 2110-2118. http://dx.doi.org/10.1161/CIRCULATIONAHA.107.729939
 Gomez-Pinilla, F., Ying, Z., Roy, R.R., Molteni, R. and Edgerton, V.R. (2002) Voluntary exercise induces a BDNF-mediated mechanism that promotes neuro-plasticity. Journal of Neurophysiology, 88, 2187-2195. http://dx.doi.org/10.1152/jn.00152.2002
 Friedenreich, C.M. (2011) Physical activity and breast cancer: Review of the epidemiologic evidence and biologic mechanisms. Recent Results Cancer Research, 188, 125-139. http://dx.doi.org/10.1007/978-3-642-10858-7_11
 Gluckman, P.D., Hanson, M.A., Cooper, C. and Thornburg, K.L. (2008) Effect of in utero and early-life conditions on adult health and disease. New England Journal of Medicine, 359, 61-73. http://dx.doi.org/10.1056/NEJMra0708473
 Telama, R., Yang, X., Viikari, J., Valimak, I., Wanne, O. and Raitakari, O. (2005) Physical activity from childhood to adulthood: A 21-year tracking study. American Journal of Preventive Medicine, 28, 267-273. http://dx.doi.org/10.1016/j.amepre.2004.12.003
 Cleland, V., Dwyer, T. and Venn, A. (2012) Which domains of childhood physical activity predict physical activity in adulthood? A 20-year prospective tracking study. British Journal of Sports Medicine, 46, 595-602. http://dx.doi.org/10.1136/bjsports-2011-090508
 Evenson, K.R., Wilcox, S., Pettinger, M., Bruner, R., King, A.C. and McTierman, A. (2002) Vigorous leisure activity through women’s adult life. American Journal of Preventive Medicine, 156, 945-953.
 The Women’s Health Initiative Study Group (1998) Design of the women’s health initiative clinical trial and observational study. Control Clinical Trials, 19, 61-109. http://dx.doi.org/10.1016/S0197-2456(97)00078-0
 Hays, J., Hunt, J.R., Hubbell, F.A., Anderson, G.L., Limacher, M., Allen, C. and Rossouw, J.E. (2003) The women’s health initiative recruitment methods and results. Annals of Epidemiology, 13, S18-S77. http://dx.doi.org/10.1016/S1047-2797(03)00042-5
 Langer, R.D., White, E., Lewis, C.E., Kotchen, J.M., Hendrix, S.L. and Trevisan, M. (2003). The women’s health initiative observational study: Baseline characteristics of participants and reliability of baseline measures. Annals of Epidemiology, 13, S107-S121. http://dx.doi.org/10.1016/S1047-2797(03)00047-4
 Blair, S.N., Dowda, M., Pate, R.R., Kronenfeld, J., Howe, H.G., Parker, G., et al. (1991) Reliability of long-term recall of participation in physical activity by middle-aged men and women. American Journal of Epidemiology, 133, 266-275.
 Falkner, K.L., Trevisan, M. and McCann, S.E. (1999) Reliability of recall of physical activity in the distant past. American Journal of Epidemiology, 150, 195-205. http://dx.doi.org/10.1093/oxfordjournals.aje.a009980
 Irwin, M.L., McTiernan, A., Manson, J.E., Thomson, C.A., Sternfeld, B., Stefanick, M.L., et al. (2011) Physical activity and survival in postmenopausal women with breast cancer: Results from the women’s health initiative. Cancer Prevention Research, 4, 522-529. http://dx.doi.org/10.1158/1940-6207.CAPR-10-0295
 Meyer, A.M., Evenson, D.R., Morimoto, L., Siscovick, D. and White, E. (2009) Test-retest reliability of the women’s health initiative physical activity questionnaire. Medicine & Science in Sports & Exercise, 41, 530-538. http://dx.doi.org/10.1249/MSS.0b013e31818ace55
 Johnson-Kozlow, M., Rock, C.L., Gilpin, E.A., Hollenbach, K.A. and Pierce, J.P. (2007) Validation of the WHI brief physical activity questionnaire among women diagnosed with breast cancer. American Journal of Health Behavior, 31, 193-202. http://dx.doi.org/10.5993/AJHB.31.2.8
 Wiklund, I., Gorkin, L., Pawitan, Y., Schron, E., Schoenberger, J., Jared, L. and Shumaer, S. (1992) Methods of assessing quality of life in the cardiac arrhythmia suppression trial (CAST). Quality of Life Research, 1, 187-201. http://dx.doi.org/10.1007/BF00635618
 Britten, P., Marcoe, K., Yamini, S. and Davis, D. (2006) Development of food group composites and nutrient profile for the MyPyramid food guidance system. Journal of Nutrition Education and Behavior, 38, S78-S92. http://dx.doi.org/10.1016/j.jneb.2006.08.007
 Chiuve, S.E., Fung, T.T., Rimm, E.B., Hu, F.B., McCullough, M.L., Wang, M., et al. (2012) Alternative dietary indices both strongly predict risk of chronic disease. Journal of Nutrition, 142, 1009-1018. http://dx.doi.org/10.3945/jn.111.157222
 Phipps, A.I., Chlebowski, R.T., Prentice, R., McTiernan, A., Stefanick, M.L., Wactawski-Wende, J., et al. (2011) Body size, physical activity, and risk of triple-negative and estrogen receptor-positive breast cancer. Cancer Epidemiology, Biomarkers & Prevention, 20, 454-463. http://dx.doi.org/10.1158/1055-9965.EPI-10-0974
 Vanreusel, B., Renson, R., Beunen, G., Claessens, A.L., Lefevre, J., Lysens, R.L., et al. (1997) A longitudinal study of youth sport participation and adherence to sport in adulthood. International Review for the Sociology of Sport, 32, 373-387. http://dx.doi.org/10.1177/101269097032004003
 Tammelin, T., Nayha, S., Laitinen, J., Rintamaki, H. and Jarvelin, M.-J. (2003) Physical activity and social status on adolescence as predictors of physical inactivity in adulthood. Preventive Medicine, 37, 375-381. http://dx.doi.org/10.1016/S0091-7435(03)00162-2
 Frandin, K., Mellstrom, D., Dundh, V. and Grimby, G. (1995) A life span perspective on patterns of physical activity and functional performance at the age of 76. Gerontology, 41, 109-120. http://dx.doi.org/10.1159/000213671
 McMurray, R.G., Ward, D.S., Elder, J.P., Lytle, L.A., Strikmiller, P.K., Baggett, C.D. and Young, D.R. (2008) Do overweight girls overreport physical activity? American Journal of Health Behavior, 32, 538-546. http://dx.doi.org/10.5993/AJHB.32.5.9
 Warner, E.T., Wolin, K.Y., Duncan, D.T., Heil, D.P., Askew, S. and Bennett, G.G. (2012) Differential accuracy of physical activity self-report by weight status. American Journal of Health Behavior, 36, 168-178. http://dx.doi.org/10.5993/AJHB.36.2.3
 Timperio Am Salmon, J. and Crawford, D. (2003) Validity and reliability of a physical activity recall instrument among overweight and non-overweight men and women. The Journal of Science and Medicine in Sport, 6, 477-491. http://dx.doi.org/10.1016/S1440-2440(03)80273-6
 Neuhouser, M.L., Di, C., Tinker, L.F., Thomson, C., Sternfeld, B., Mossavar-Rahmani, Y., et al. (2013) Physical activity assessment: Biomarkers and self-reported activity-related energy expenditure in the WHI. American Journal of Epidemiology, 15, 576-585. http://dx.doi.org/10.1093/aje/kws269
 Jose, K.A., Blizzard, L., Dwer, T., McKercher, C. and Venn, A.J. (2011) Childhood and adolescent predictors of leisure time physical activity during the transition from adolescence to adulthood: A population based co-hort study. International Journal of Behavioral Nutrition and Physical Activity, 8, 54. http://dx.doi.org/10.1186/1479-5868-8-54
 Willey, J.Z., Paik, M.C., Sacco, R., Elkind, M.S.V. and Boden-Albala, B. (2010) Social determinants of physical inactivity in the Northern Manhattan Study (NO-MAS). Journal of Community Health, 35, 602-608. http://dx.doi.org/10.1007/s10900-010-9249-2
 Pratt, M., Macera, C.A. and Blanton, C. (1999) Levels of physical activity and inactivity in children and adults in the United States: current evidence and research issues. Medicine & Science in Sports & Exercise, 31, S526- S533. http://dx.doi.org/10.1097/00005768-199911001-00007
 Caspersen, C.J., Pereira, M.A. and Curran, K.M. (2000) Changes in physical activity patterns in the United States, by sex and cross-sectional age. Medicine & Science in Sports & Exercise, 32, 1601-1609. http://dx.doi.org/10.1097/00005768-200009000-00013
 Blair, S.N., Dowda, M., Pate, R.R., Kronenfeld, J., Howe, H.G., Parker, G., Blair, A. and Fridinger, F. (1991) Reliability of long-term recall of participation in physical activity by middle-aged men and women. American Journal of Epidemiology, 133, 266-275.