Scientific journal

57 2018

Journal of Food and Nutrition Research
Summary No. 3 / 2018

Zdešar Kotnik, K. – Jurak, G. – Starc, G. – Puc, M. – Golja, P.
Use of dietary supplements in differently physically active adolescents
Journal of Food and Nutrition Research, 57, 2018, No. 3, s. 231-241

Petra Golja, Department of Biology, Biotechnical Faculty, University of Ljubljana, Vecna pot 111, SI-1000 Ljubljana, Slovenia. Tel.: +386 (0)1 320 34 22, fax: +386 (0)1 257 33 90, e-mail:

Received 11 June 2017; 1st revised 9 December 2017; 2nd revised 26 December 2018; 3rd revised 1 February 2018; accepted 21 February 2018; published online 23 July 2018

Summary: Aim of our study was to determine whether the extent of physical activity and sports-club membership affect the prevalence and frequency of dietary supplement (DS) use. Data were obtained within the Slovenian ACDSi-2014 cross-sectional study. Adolescents (14–19 years old) enrolled in 15 public secondary schools (N = 1463) were included in a nationally representative study sample. Average daily energy expenditure for physical activity (DEEPA) was determined with School Health Action, Planning and Evaluation System questionnaire. DS data were collected with purposely prepared questionnaire. Our results indicated that more than two-thirds (69?%) of adolescents used DS, when DS users were defined as anyone using DS at least several times per year. However, if DS users were defined differently, i.e. according to their frequency of DS use, the prevalence changed considerably, namely to 52?%, 40?%, and 14?%, for those using DS at least once per month, week, or day, respectively. With higher average DEEPA and sports-club membership, DS use increased significantly. A comparison of different prevalence of DS use related to different frequency of DS use de­monstrated a big discrepancy between these prevalence estimations, which points to an urgent need for a methodological standardization of data acquisition regarding DS use.

Keywords: dietary supplementations; physical activity; adolescent; standardization; organized sports

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