Title GUBITAK TEKUĆINE TIJEKOM NOGOMETNE UTAKMICE PRI VISOKIM TEMPERATURAMA Title (english) FLUID LOSSES DURING A FOOTBALL MATCH AT HIGH TEMPERATURES Author Martina Dadić Mentor Igor Jukić (mentor)Committee member Igor Jukić (predsjednik povjerenstva)Committee member Luka Milanović (član povjerenstva)Committee member Maroje Sorić (član povjerenstva)Granter University of Zagreb Defense date and country 2022-09-08, Croatia Scientific / art field, SOCIAL SCIENCES Abstract Utakmice za vrijeme vrućina predstavljaju veliki izazov organizmu u regulaciji tjelesne temperature. Dobro je poznato da u uvjetima visokih temperatura stope znojenja kod sportaša mogu biti visoke, dok povećani gubitci vode i elektrolita mogu negativno utjecati na sportsku izvedbu, ali i na zdravlje igrača. Dehidracija dovodi do povećanog naprezanjem kardiovaskularnog sustava, zamora mišića, smanjene sposobnosti oporavka što rezultira padom brzine, izdržljivosti i koncentracije sportaša. Problematika gubitka tekućine kod sportaša privukla je pozornost, no malo je istraživanja provedeno u natjecateljskim uvjetima za vrijeme nogometne utakmice. Cilj ovog istraživanja bio je procijeniti status hidracije nogometaša prije i nakon nogometne utakmice, gubitak tekućine znojem i količinu unesene tekućine tijekom nogometne utakmice pri visokim temperaturama. U istraživanju je sudjelovalo 20 poluprofesionalnih igrača seniorskog uzrasta koji su odigrali dvije prijateljske utakmice: prvu pri 29,4°C, uz vlažnost zraka 75 %, a drugu pri 23,4°C, uz vlažnost zraka 62 %. Rezultati istraživanja pokazali su da je prosječan gubitak tjelesne mase igrača tijekom utakmice bio -1,06 ± 0,88 kg a varirao je između -2,45 kg i 0,8 kg. Dehidracija je u prosjeku iznosila 1,4 ± 1,2 %. Kod 30 % igrača dehidracija bila je veća od 2 % tjelesne mase što se smatra granicom nakon koje zbog dehidracije dolazi do pada sportskih performansi. Gubitak znoja u prosjeku iznosio je oko 650 ml, a stopa znojenja oko 600 ml/h. Praćenjem specifične težine urina utvrđeno je da je 35 %, odnosno 7 od 20 igrača na utakmicu došlo dehidrirano. Postoji statistički značajna razlika za podatak specifične težine urine prije i poslije (p < 0,05). Specifična težina urina prije utakmice bila je 1.020 a nakon utakmice 1.025. 13 od 20 igrača bila su dehidrirana nakon utakmice, odnosno 65 % igrača. Iz dobivenih rezultata možemo zaključiti da je potrebno educirati igrače i trenere o važnosti hidracije s naglaskom na individualne potrebe svakog sportaša pri visokim temperaturama budući da je dio igrača na utakmicu došao dehidriran a nakon utakmice je većina njih bila dehidrirana.
Abstract (english) Matches held in hot weather represent a great challenge for the body in terms of regulating body temperature. It is well known that in conditions of high temperatures, athletes’ sweat rates can be high, while increased loss of water and electrolytes can negatively affect sports performance, as well as the health of players. Dehydration leads to an increased strain on the cardiovascular system, muscle fatigue, reduced ability to recover, which in turn results in a decrease in speed, endurance and focus of athletes. The issue of fluid loss in athletes has sparked some interest, but little research has been conducted during a football match in competitive conditions. The aim of this research was to assess the hydration status of football players before and after a football match, fluid loss through sweat and the amount of fluid ingested during a football match at high temperatures. The research was done on a sample of 20 senior semi-professional players who played two friendly matches: the first one at 29.4°C, with 75 % air humidity, and the second one at 23.4°C, with 62 % air humidity. The results of the research revealed that the players’ average body mass loss during a match was -1.06 ± 0.88 kg, and it varied between -2.45 kg and 0.8 kg. Dehydration averaged 1.4 ± 1.19 %. 30% of players displayed dehydration greater than 2 % of their body mass, which is considered the limit after which sports performance decrease due to dehydration The average sweat loss amounted to 650 ml, and the sweating rate was 600 ml/h. By monitoring the weight gravity of urine, it was determined that 35 % of the players, 7 out of 20 showed up to the match dehydrated. The difference between the data was statistically significant: the specific weight of urine before the match was 1.020, and 1.025 after the match. 13 out of 20 players were dehydrated after the match, i.e., 65 % of the players. We can conclude from the obtained results that it is necessary to educate players and coaches about the importance of hydration with an emphasis on the individual needs of each athlete, since some of the players came to the match dehydrated, and after the match most of them were dehydrated.
Keywords
nogomet
dehidracija
visoke temperature
Keywords (english)
soccer
dehydration
high temperatures
Language croatian URN:NBN urn:nbn:hr:117:077067 Study programme Title: Specialist graduate professional study for sports coaches education; specializations in: Acrobatic rock and roll, Track-and Field, Fitness, Weightlifting, Sailing, Windsurfing, Judo, Kayaking, Karate, Skating, Physical Conditioning of Athletes, Basketball, Bowling, Football, Volleyball, Dancing, Swimming, Rhythmic Gymnastics, Diving, Handball, Skiing, Artistic Gymnastics, Physical Recreation, Shooting, Teakwondo, Tennis, Rowing Type of resource Text File origin Born digital Access conditions Open access Terms of use Created on 2022-10-14 08:25:28
