The effect of organic beetroot and black currant supplementation on adolescent female handball players performance : pilot study

Sziráki, Zsófia and Nyakas, Csaba and Alszászi, Gabriella and Seres, Leila and Komka, Zsolt and Szendrei, Eszter and Bosnyák, Edit and Szmodis, Márta (2021) The effect of organic beetroot and black currant supplementation on adolescent female handball players performance : pilot study. MAGYAR SPORTTUDOMÁNYI SZEMLE, 22 (90). pp. 82-90. ISSN 1586-5428

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Abstract

Athletes are under tremendous external mental pressure to improve their performance, which is materially leading to an increasing frequency of consumption of dietary supplements in elite sports, both in the adult and youth age groups. Adequate physical development of athletes, minimizing their health risks, and maintaining a clean playfulness in sports play are prerequisites for the safe performance optimization of junior athletes. In our study, 14-17 years old, first-class classified adolescent and youth female handball players (n=12) with at least two years of sports training history were included. In the preparatory phase of the study, we measured their body composition (Inbody 720), handgrip strength and the participants performed a maxima type bicycle-ergometer load. The study was followed by a 10-day supplementation period with beet (n=8) and currant concentrate (n=4), after which the intervention effects were moni - tored by measuring their performance under the ergonomic load of the bicycle, measuring body composition and handgrip strength. Formulations used in a double blind, placebocontrolled study were tested in an accredited la - boratory for total polyphenol, nitrate and flavonoid content. The results before and after the intervention were compared with a one-sample t-test, the signific - ance level was p < 0.05. After 10 days of dietary supplementation, we found no difference in the relative muscle mass, rela - tive fat mass, right handgrip strength of the partici - pants in any of the groups studied. There was a significant increase in left handgrip strength in the currant concentrate group. There was no significant improvement in performance physiological param - eters either. The low number of items and short-term supplementation have not been shown to be effective in improving the performance of female athletes.

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