Int J Sport Nutr Exerc Metab 2004, 14:104–120.PubMed 11. Perko M: Development of a theory-based instrument regarding adolescent athletes and dietary supplements. Am J Health Stud 1999,15(2):71–80.
12. Balluz LS, Kieszak SM, Philen RM, Mulinare J: Vitamin and mineral supplement use in the United States. Results from the Third National Health and Nutrition Examination Survey. Arch Fam Med 2000, 9:258–262.PubMedCrossRef 13. Wallström P, Elmståhl S, Hanson BS, Östergren P, Johansson U, Janzon L, Larsson SA: Demographic and psychosocial characteristics of middle-aged women and men who use dietary supplements. Results from the Malmödiet and cancer study. Eur J Publ Health 1996, 6:188–195.CrossRef 14. Greger JL: Dietary supplement use: Consumer characteristics and interests. J Nutr 2001,131(Suppl 4):S1339-S1343. see more 15. Beitz R, Mensink GBM, Fischer B, Thamm M: Vitamins
– Dietary intake and intake from dietary supplements in Germany. Eur J Clin Nutr 2002, 56:539–545.PubMedCrossRef 16. Slesinski MJ, Subar AF, Kahle LL: Dietary intake of fat, fiber and other nutrients is related to the use of vitamin and mineral supplements in the United States: The 1992 National Health Interview Survey. J Nutr 1996, 126:3001–3008.PubMed 17. Block G, Cox C, Madans J, Schreiber GB, Licitra L, Melia N: Vitamin supplement use, by demographic characteristics. Am J Epidemiol 1998, 127:297–309. 18. Lyle BJ, Mares-Perlman JA, Klein BEK, Klein R, Greger JL: Supplement users differ from nonusers in demographic, lifestyle, dietary and health characteristics. J Nutr 1998, 128:2355–2362.PubMed Volasertib price 19. Molinero O, Márquez S: Use of nutritional supplements in sports: risks, knowledge, and behavioural-related factors. Nutr Hosp 2009,24(2):128–34.PubMed 20. Morrison LJ, Gizis F, Shorter B: Prevalent use of dietary supplements among people who exercise at a commercial gym. Int J Sport Nutr
Exerc Metab 2004,14(4):481–92.PubMed 21. Eliason BC, Kruger J, Mark D, Rasmann DN: Dietary supplement users: demographics, product use, and medical system interaction. J Am Board Fam Prac 1997, 10:265–271. 22. Cust AE, Smith BJ, Chau Rutecarpine J, van der Ploeg HP, Friedenreich CM, Armstrong BK, Bauman A: Validity and repeatability of the EPIC physical activity questionnaire: a validation study using accelerometers as an objective measure. Int J Behav Nutr Phys Act 2008, 5:33.PubMedCrossRef 23. Eldridge AL, Sheehan ET: Food supplement use and related beliefs: survey of community college students. J Nutr Educ 1994, 26:259–265. 24. Rauch HGL, Hawley JA, Woodey M, Noakes TD, Dennis SC: Effects of ingesting a sports bar versus glucose polymer on substrate utilization and ultra-endurance performance. Int J Sports Med 1999, 20:252–257.PubMedCrossRef 25. Braun H, Koehler K, Geyer H, Kleinert J, Mester J, Schänzer W: Dietary supplement use among elite young german athletes. Int J Sport Nutr Exerc Metab 2009, 19:97–109.PubMed 26.