Ib qho kev sib cog lus ua rau cov leeg ua kom luv, yog li tsim lub zog. Eccentric contractions ua rau cov nqaij ntshiv elongate nyob rau hauv teb rau ib tug ntau dua opposing quab yuam. Isometric contractions ua rau lub zog tsis hloov qhov ntev ntawm cov leeg.
Yuav ua li cas contraction tshwm sim thaum cov leeg luv?
A concentric contraction is a type of muscle ua kom muaj zog ntawm koj muscle as it shortens . Raws li koj leeg luv , nws tsim kom muaj zog txaus txav ib yam khoom. Nov yog hom nrov tshaj plaws ntawm muscle contraction. Hauv kev cob qhia qhov hnyav, bicep curl yog ib qho yooj yim-rau-paub pom kev txav chaw.
Yuav ua li cas rau cov leeg ntev thaum lub sij hawm contraction?
A cov leeg ntev tsis tuaj yeem ua rau lub sijhawm nws cog lus, thiab lub zog siv sab nraud yog ntau dua li lub zog contractile los ntawm cov leeg.
Cov leeg nqaij luv luv thaum lub sij hawm isotonic contraction?
Hom Kev Tiv Thaiv Cov leeg: Ib qhoisotonic concentric contraction ua rau cov leeg nqaij luv, ib qho isotonic eccentric contraction ua rau cov leeg ntev. Thaum lub sij hawm isometric contraction cov leeg yog nyob rau hauv nruj tab sis tsis shortens los lengthens.
Yuav ua li cas luv thaum lub sij hawm cov leeg nqaij contraction?
Kev piav qhia: Thaum lub sij hawm cov leeg nqaij contraction, myosin taub hau rub cov actin filamentsmus rau ib leeg ua rau ib tug luv luv sarcomere. Thaum I band thiab H cheeb tsam yuav ploj lossis luv, qhov ntev A band yuav nyob twj ywm tsis hloov.
