Smjernice za prehranu i hidraciju igrača odbojke na pijesku tijekom natjecateljske sezone

undergraduate thesis

• Title (english): Nutrition and hydration guidelines for beach volleyball players during competitive season
• Author: Ivana Ovčina
• Mentor: Zvonimir Šatalić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Quality Control); (Laboratory for Nutrition Science); Zagreb
• Defense date and country: 2017-09-18, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Nutrition

Abstract

Okolišni uvjeti mogu izrazito negativno utjecati na izvedbu igrača zbog mogućnosti pojave hipertermije i hipohidracije. Igračima odbojke na pijesku (n=15) mjerene su tjelesna masa i temperatura prije zagrijavanja i neposredno nakon završetka utakmice. Praćen je unos tekućine, trajanje utakmice te okolišni uvjeti. Do očekivanog porasta tjelesne temperature nije došlo, a u polovici slučajeva ona se snizila. Ekstremno visoke temperature zraka na suncu (max. 45,8⁰C) suprotno očekivanju nisu značajno utjecale na povećanje dehidracije koja je iznosila 0,35% i 0,73% kod žena, tj. muškaraca. Maksimalna zabilježena dehidracija iznosila je 2,14% što je vrijednost koja bi mogla narušiti izvedbu. U nekih igračica je zabilježen porast tjelesne mase što je u suprotnosti s preporukama te je moguć rizik od hiponatremije. Iako igrači odbojke na pijesku u prosjeku nadoknađuju gubitke tekućine u odgovarajućoj količini, neki započinju utakmicu neadekvatno hidrirani. Na dane s više utakmica većina se ne uspijeva rehidrirati. Potrebna je edukacija o pravilnoj hidraciji s obzirom na individualne zahtjeve i intenzitet utakmice.

Abstract (english)

Environmental conditions can affect players’ performance negatively due to the possibility of hyperthermia and hypohydration. The analysed beach volleyball players (n=15) were subjected to body mass and temperature measurement before the warm-up and immediately after the end of the game. Fluid intake, duration of the game and environmental conditions were monitored. The expected increase in body temperature did not occur, and in half of the cases it decreased. Extremely high air temperatures in the sun (up to 45,8⁰C), contrary to expectations, did not have major influence on the increase in dehydration, which was 0,35% in women and 0,73% in men. The maximum recorded dehydration was 2,14% which is a value that could weaken performance. As this study shows, some female players show increase of body mass, which is contradictory to the recommendations and poses a risk of hyponatremia. Although beach volleyball players, in average, compensate fluid losses in a satisfying amount, some start the game inadequately hydrated. On days with multiple games, most of them fail to rehydrate. Education on proper hydration is required, given the individual requirements and intensity of the match.

• Keywords: sportska prehrana; hidracija; odbojka na pijesku
• Keywords (english): sport nutrition; hydration; beach volleyball
• Language: croatian
• URN:NBN: urn:nbn:hr:159:458482
• Study programme: Title: Nutrition; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) nutricionizma (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) nutricionizma)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-09-19 08:51:37