Title Uloga glikogena u sportskom treningu Title (english) The role of glycogen in sports training Author Aleksandar Petković Mentor Igor Jukić (mentor)Committee member Igor Jukić (predsjednik povjerenstva)Committee member Vlatko Vučetić (član povjerenstva)Committee member Cvita Gregov (član povjerenstva)Granter University of Zagreb Defense date and country 2022-06-13, Croatia Scientific / art field, SOCIAL SCIENCES Abstract Cilj ovog rada je opisati bioenergetske, fiziološke i nutricionističke značajke mišićnog glikogena te njihov utjecaj na adaptaciju organizma u procesu provedbe sportskog treninga. Glikogen ima integralnu ulogu u regulaciji procesa za dobivanje energije za rad, od direktnog supstrata za mišićnu kontrakciju do strukturalnih značajki u vidu proteina koji se nalaze unutar molekule glikogena i koji određuju dinamiku potrošnje i obnove glikogena tijekom i nakon trenažnog opterećenja. Različite anatomske lokacije glikogena unutar mišićnih vlakana preferencijalno će biti korištene ovisno o intenzitetu trenažnog rada, što će imati direktan utjecaj na ukupan volumen rada koji će biti moguće odraditi unutar određenog intenziteta rada. Nakon trenažnog opterećenja nutricionistički i hormonalni aspekti preuzimaju glavnu ulogu u procesu obnove mišićnog glikogena. U tom pogledu, nutricionistički pristup poglavito je vezan uz potrebne količine ugljikohidrata u odnosu na razinu iscrpljenosti mišićnog glikogena te vremenski okvir tijekom kojeg je potrebno postići optimalnu razinu obnove. Ostali aspekti nutricionističkih intervencija imaju manju ulogu od unosa ugljikohidrata, ali u mogu pridonijeti bržoj resintezi glikogena, pogotovo u situacijama kada je potrebna rapidna obnova glikogenskih rezervi. Sa adaptacijskog stajališta, upravo je razina glikogena pred početak i na kraju trenažnog opterećenja glavna odrednica koja će se molekularna signalna kaskada na staničnoj razini dominantno aktivirati, što će programiranim ponavljanjem takvih trenažnih jedinica dovesti do specifične adaptacije organizma, a sve u skladu sa potrebama sportske discipline.
Abstract (english) The main goal of this paper is to describe the bioenergetic, physiological and nutritional characteristics of muscle glycogen and their influence on the adaptation processes of the human body during conduction of sports training. Glycogen has an integral part in regulating the processes of acquiring energy for work, from being a substrate for muscle contraction to structural features in regard to the proteins that make up the glycogen molecule that determine the dynamics of glycogen consumption and repletion during and after an exercise bout. Different anatomical locations of muscle glycogen within the muscle fiber will be used preferentialy depending on the intensity of work and therefore have major influence on the volume of one can do at a specific intensity before these fibers are glycogen depleted. After the exercise bout, nutritional and hormonal aspects dominate the glycogen repletion phase. In this regard, nutritional goals are mainly centered around adequate intake of carbohydrates in dependence to the level of glycogen depletion and the available timeframe to attain adequate glycogen repletion. Other aspects of nutritional intervention have a smaller impact than carbohydrates but can benefit the process in situations when rapid glycogen resinthesis is needed. From an adaptational standpoint, the absolute values of muscle glycogen before and after an exercise bout determine the dominant molecular signalling cascades that will be activated, which will bring about specific adaptation of the organism through programmed repetition of these training units, all in concordance with the needs of a specific sport discipline.
Keywords
glikogen
ugljikohidrati
sportski trening
sportska izvedba
Keywords (english)
glycogen
carbohydrate
sports training
sport performance
Language croatian URN:NBN urn:nbn:hr:117:191378 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 Access restricted to students and staff of home institution Terms of use Created on 2022-07-29 06:32:40
