Kinesiology 2230A/B Lecture Notes - Lecture 10: Myoglobin, Lactic Acid, Anaerobic Respiration
28 Feb 2016
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Oxygen debt (epoc: as we start our oxygen consumption because of the start of exercise, we don"t immediately reach the amount of o2 required for the movement. Fast (alactic) 30 sec half-life you break down half of atp-pcr in 30 sec; pcr system is being regenerated aerobically; in 30 sec, there will be very little change in lactate. Slow (lactic) 20-30 min half-life; for lactate to decrease by half, that takes 30 min. First, there is myoglobin recovery (fast); the oxygen bounded to myoglobin (carrier oxygen in the muscle) will be used for metabolism; oxygen is used again for the recovery of myoglobin. Increase in temperature in the muscle leads to be increase in metabolic rate; there will be an hormonal stimulation that will also increase metabolic rate. For the muscle tissue to repair itself, the body needs oxygen; also extra cardiorespiratory work.
