Nws tuaj yeem tshwm sim ntawm ntau theem ntawm txoj kev tsav tshebthiab feem ntau muab faib rau hauv nruab nrab thiab cov khoom siv sab nraud. Peripheral qaug zog yog tsim los ntawm kev hloov ntawm los yog distal mus rau lub neuromuscular hlws ris. Central fatigue pib ntawm lub hauv paus paj hlwb (CNS), uas txo cov neural tsav mus rau cov leeg.
Cov leeg nqaij nkees tshwm sim li cas?
Nws tuaj yeem cuam tshuam nrog lub xeev qaug zog, feem ntau ua raws li kev ua ub ua no lossis kev tawm dag zog. Thaum koj nkees nkees, lub zog tom qab koj cov leeg 'kev txav qis, ua rau koj tsis muaj zog. Txawm hais tias kev tawm dag zog yog ib qho ua rau cov leeg qaug zog, cov tsos mob no tuaj yeem tshwm sim los ntawm lwm yam mob, ib yam nkaus.
Vim li cas cov leeg nqaij qaug zog tshwm sim hauv tib neeg?
Phosphocreatine muab phosphates rau ADP molecules, ua kom muaj zog ATP molecules. Nws yog tam sim no nyob rau theem qis hauv cov leeg. Glycolysis hloov cov piam thaj mus rau pyruvate, dej thiab NADH, tsim ob lub molecules ntawm ATP. Ntau tshaj pyruvate hloov mus rau lactic acid uas ua rau cov leeg qaug zog.
Cov nqaij ntshiv twg tau nkees yooj yim?
Cov leeg uas ua rau qaug zog yooj yim yog cov leeg yeemCov lus teb tiav: Cov myofibrils yog 1 micrometer hauv txoj kab uas hla thiab nws yog cov pob protein ntev uas muaj myofilaments. Myofibrils yog tsim los ntawm cov leeg nqaij. Cov nqaij fibers tau koom ua ke los ntawm ntau pawg ntawm cov hlwb hu ua cov leeg pob txha.
Vim li cas cov leeg nqaij qaug zog tshwm sim hauv biology?
Nws tshwm sim thaum cov leeg nqaij ua haujlwm dhau ntawm cov ntaub so ntswg substrate thiab muaj peev xwm oxygenation. Cov leeg nqaij qaug zog tshwm sim thaum muaj cov nqaij mos oxygen deprivation, glycogen los yog phosphocreatine depletion, thiab nce qib ntawm cov ntshav thiab cov leeg nqaij lactic acid hauv cov leeg nqaij.
