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Razlike v trajanju dinamičnega krčenja mišic z uporabo dveh intervalov krčenja in sproščanjaUšaj, Anton ; Sepe, Ana ; Serša, IgorCilj naloge je bil ugotoviti morebitne razlike med dvema različnima krčenjema: enim z izmenjujočima se enosekundnim intervalom (1 : 1) ter drugega, z dvosekundnim intervalom krčenja in sprostitve (2 ... : 2), če mišice podlakti obremenimo z 15 kp. V ta namen sta dve skupini: 6 in 11 preiskovancev opravili stiskanje gumijastega obroča v zapestju do utrujenosti, in sicer s krčenjema 1 : 1 in 2 : 2. Mišična presnova je bila merjena z MRS (magnetna resonančna spektroskopija) in NIRS (bližnja infrardeča spektroskopija). Merjene so bile vsebnosti kreatin fosfata (CrP) in kazalci oksigenacije v mišici. Izračunane so fluktuacije oksigenacijskih kazalcev. Rezultati ne kažejo razlik v trajanju obeh krčenj, čeprav kaže krčenje 1 : 1 izrazito tendenco krajšega trajanja (337 +- 249 s) v primerjavi z 2 : 2 (578 +- 271 s). Tudi kazalci presnove ne razlikujejo obeh vrst krčenj. Toda fluktuacije oksigeniranega hemoglobina (O2Hb), pri 1 : 1 in pri 2 : 2 kažejo jasno tendenco po večjih vrednostih pri krčenjih 2 : 2. Mogoče je zaključiti, da sta si krčenji 1 : 1 in 2 : 2 dokaj podobni. Toda jasna tendenca po bolj izraženih fluktuacijah oksigeniranega hemoglobina pri krčenjih 2 : 2 nakazuje, da mišica poskuša privzeti več kisika, ki ji ga omogoča daljši interval sprostitve. Pri tem kaže tendenco po podaljšanju trajanja krčenja do utrujenosti.Source: Šport : revija za teoretična in praktična vprašanja športa. - ISSN 0353-7455 (Letn. 65, št. 1/2, 2017, str. 170-173)Type of material - article, component part ; adult, seriousPublish date - 2017Language - slovenianCOBISS.SI-ID - 5138865
Author
Ušaj, Anton |
Sepe, Ana |
Serša, Igor
Topics
šport |
vzdržljivost v moči |
MRS |
NIRS |
dinamično krčenje |
mišice podlahti |
sport |
strength endurance |
NMR |
NIRS |
dynamic contraction |
forearm muscles
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source: Šport : revija za teoretična in praktična vprašanja športa. - ISSN 0353-7455 (Letn. 65, št. 1/2, 2017, str. 170-173)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Ušaj, Anton | 06162 |
Sepe, Ana | 07925 |
Serša, Igor | 12056 |
Source: Personal bibliographies
and: SICRIS
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