1US Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, The President's Council of Sports and Physical Fitness. Physical Activity and Health: A Report of the Surgeon General. Washington, DC: Office of the Surgeon General, 1996.
2Friedenreich, CM. Physical activity and cancer prevention: from observational to intervention research. Cancer Epidemiol. Biomark. Prev. 2001; 10: 287–301.
3Vainio, H, Bianchini, F, Cheney, J. IARC Handbook of Cancer Prevention. Vol. 6. Weight Control and Physical Activity. Lyon: IARC Press, 2002.
4Colbert, LH, Hartman, TJ, Malila, N, Limburg, PJ, Pietinen, P, Virtamo, J, et al. Physical activity in relation to cancer of the colon and rectum in a cohort of male smokers. Cancer Epidemiol. Biomark. Prev. 2001; 10: 265–8.
5Shoff, SM, Newcomb, PA, Trentham-Dietz, A, Remington, PL, Mittendorf, M, Greenberg, ER, et al. Early-life physical activity and postmenopausal breast cancer: effect of body size and weight change. Cancer Epidemiol. Biomark. Prev. 2000; 9: 591–5.
6Verloop, J, Rookus, MA, van der Kooy, K, van Leeuwen, FE. Physical activity and breast cancer risk in women aged 20–54 years. J. Natl. Cancer Inst. 2000; 92: 128–35.
7Friedenreich, CM, Thune, I, Brinton, LA, Albanes, D. Epidemiologic issues related to the association between physical activity and breast cancer. Cancer 1998; 89(Suppl. 3): 600–10.
8Gammon, MD, John, EM, Britton, JA. Recreational and occupational physical activities and risk of breast cancer. J. Natl. Cancer Inst. 1998; 90: 100–17.
9Thune, I, Brenn, T, Lund, E, Gaard, M. Physical activity and the risk of breast cancer. N. Engl. J. Med. 1997; 336: 1269–75.
10Lee, I-M, Sesso, HD, Paffenberger, RS. Physical activity and risk of lung cancer. Int. J. Epidemiol. 1999; 28: 620–5.
11Clarke, G, Whittemore, AS. Prostate cancer risk in relation to anthropometry and physical activity: The National Health and Nutrition Examination Survey I. Epidemiological Follow-Up Study. Cancer Epidemiol. Biomark. Prev. 2000; 9: 875–81.
12Liu, S, Lee, I-M, Linson, P, Ajani, U, Buring, JE, Hennekens, CH. A prospective study of physical activity and risk of prostate cancer in US physicians. Int. J. Epidemiol. 2000; 29: 29–35.
13Riboli, E, Kaaks, R. The EPIC Project: rationale and study design. European Prospective Investigation into Cancer and Nutrition. Int. J. Epidemiol. 1997; 26(Suppl. 1): S6–14.
14Riboli, E, Hunt, KJ, Slimani, N, Ferrari, P, Norat, T, Fahey, M, et al. European Prospective Investigation into Cancer and Nutrition (EPIC) study: study populations and data collection. Public Health Nutr. 2002; 5(6B): 1113–24.
15Pols, MA, Peeters, PHM, Ocké, MC, Slimani, N, Bueno-de-Mesquita, HB, Collette, HJA. Estimation of reproducibility and relative validity of the questions included in the EPIC physical activity questionnaire. Int. J. Epidemiol. 1997; 26(Suppl. 1): S181–9.
16Slimani, N, Kaaks, R, Ferrari, P, Casagrande, C, Clavel-Chapelon, F, Lotze, G, et al. European Prospective Investigation into Cancer and Nutrition (EPIC) calibration study: rationale, design and population characteristics. Public Health Nutr. 2002; 5(6B): 1125–45.
17Vaz de Almeida, MD, Gracia, P, Aonso, C, D'Amicis, A, Lappalainen, R, Damkjaer, S. Physical activity levels and body weight in a nationally representative sample in the European Union. Public Health Nutr. 1999; 2: 105–13.
18Matthews, CE, Freedson, PS, Hebert, JR, Stanek, EJ III, Merriam, PA, Rosal, MC, et al. Seasonal variation in household, occupational, and leisure time physical activity: longitudinal analyses from the seasonal variation of blood cholesterol study. Am. J. Epidemiol. 2001; 153: 172–83.
19Kafatos, A, Manios, Y, Markatji, I, Giachetti, I, Vaz de Almeida, MD, Engstrom, LM. Regional, demographic and national influences on attitudes and beliefs with regard to physical activity, body weight and health in a nationally representative sample of the European Union. Public Health Nutr. 1999; 2: 87–95.
20James, WPT, Schofield, EC. Human Energy Requirements: A Manual for Planners and Nutritionists. Oxford/New York/Tokyo: Oxford University Press, 1990.
21Domínguez-Berjón, F, Borrell, C, Nebot, M, Plasència, A. Physical activity assessment in population surveys: can it really be simplified? Int. J. Epidemiol. 1999; 28: 53–7.