Ukuzivocavoca yizo zonke izinhlobo ezintathu ze-muscle fiber contraction
I-muscle contraction ivela lapho i-fiber muscle noma iqoqo lezintambo ibonakaliswa ubuchopho ngezinzwa ukuze kusebenze futhi kwandiswe ukungezwani ngaphakathi kwemisipha. Kubizwa nangokuthi i-muscle fiber isebenze. Umzimba wakho unezinhlobo ezintathu zemisipha ehlukene futhi zivumelwano ngezindlela ezintathu ezahlukene.
I-Muscle Fibers
Imisipha yakho yenziwe ngezibopho zemisipha equkethe izinkulungwane zezinhlaka ezincane ezibizwa ngokuthi i-myofibrils, lapho ukukhishwa kwangempela kwenzeka khona.
Kunezinhlobo ezimbili zama-protein filaments ngaphakathi kwe-myofibrils-actin ne-myosin. I-Actin yenza ama-filaments amancane. I-Myosin ihlanganisa ama-filaments aqinile futhi "iyimoto yamangqamuzana" eguqula amandla amakhemikhali abe amandla amakhulu, okudala amandla nokushayela.
Lawa maprotheni amabili, i-myosin, ne-actin asebenzisana ngokudlulela phambili, okwenza ukuhlukunyezwa phakathi nokukhishwa kwemisipha. Lezi zinqubo zamangqamuzana aziqondi kahle. Lo mbono ubizwa ngokuthi "imodeli ye-filament", futhi isetshenziswa njengesizathu sokuqonda ukuchotshozwa kwemisipha yizazi zezinto eziphilayo.
I-theory filament theory ichaza ukuthi uma isisundu sisebenza futhi ukunyakaza kwenzeka, lezi zinhlamvu ezimbili zokungena zingabamba futhi zidonsa, okubangela ukuthi i-myofibril ifinyeze. Lokhu kunciphisa kubizwa ngokuthi i-muscle contraction.
Kunezinhlobo ezintathu zamaseli omzimba emzimbeni womuntu:
- Imisipha yezinhlanzi : Lezi zinhlanzi ziqhuba ukunyakaza okuzithandela. Yilona uhlobo oluhle lokucabanga ngalo lapho ukhuluma ngemizwa, njengemisipha yezandla nemilenze yakho.
- Isisu senhliziyo: Lawa angamaseli enhliziyo atshaya igazi lakho. Ukuhlukana kwabo kubangele ukushaya kwenhliziyo yakho. Uma uzivocavoca, wenza inhliziyo yakho ishaye ngokushesha futhi ngakho-ke imisipha yomzimba kufanele yenze izingqinamba eziphindaphindiwe.
- Umswakama omzimba : Lawa maseli anesibopho sokunyakaza okungahambisani nomzimba, ukufaka izitho ezingenalutho ezinjengezinambuzane, isisu, nesisu, kanye nemithambo yegazi kanye nomzila wokuphefumula. Benza imisebenzi ebalulekile ekugayeni, ekuqedeni, nasegazini legazi.
Izinhlobo Ezintathu Zokuhlukaniswa Kwemisipha
Kunezindlela ezintathu ze-fiber muscle ezingasetshenziswa. Amabili avumela ukunyakaza emisipha futhi omunye udala ukungezwani, ngaphandle kokunyakaza okuhlangene. Lezi zinhlobo ezintathu zokuphambana zihlanganisa:
- Ukuncintisana Kwemisipha Emincane (ukunciphisa): Ukuqeqeshwa kwesisindo, lesi yisigaba sokuphakamisa umsebenzi. Isibonelo, ukuphakamisa isisindo kwi-curl ye-bicep noma ukwenza ama-sit-ups. I-muscle bulges njengoba ifinyelelwe ekusikeleni. Imisebenzi eholela ekugxileni kwe-muscle ihlanganisa ukugxila, ukugibela ukukhuphuka, ukuhamba ngebhayisikili, ukugibela izitebhisi, ngisho nokukhuphuka esihlalweni. Ukuvinjelwa komgogodla kubandakanya ukunyakaza okuhlangene futhi kwakha amandla. Kodwa-ke, kungaholela ekulimazeni ngokweqile.
- U-Contract Muscle Contraction (ekwandiseni): Ekuqeqesheni isisindo, lesi yisigaba lapho ubuhlungu bubuyela khona endaweni yokuqala. E-curl bicep, yilapho usinciphisa isisindo endaweni yokuqala. Ngokwenza i-sit-up, yilapho usinciphisa isifuba sakho emuva. Usebenzisa ukuvinjelwa kwe-eccentric ukuhamba ekwehleni, ukuxubha ngenkathi usebenza, futhi ku-Pilates umzimba.
- Isometric Muscle Contraction (static): Izenzo ze-Isometric yilabo abangabangeli ukunyakaza okuhlangene. Isibonelo sixosha emdongeni. Izenzo ze-Isometric zivame ukusetshenziselwa izinhlelo ze-rehab ukusiza ukuvuselelwa kwemisipha.
> Umthombo:
> UKenney WL, uWilmore JH, uCostill DL. I-Physiology yezemidlalo nokuzivocavoca . Champaign, IL: Human Kinetics; 2015.