{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture6-2009W - (2 lactic acid type of fatigue Light...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Interplay of aerobic and anaerobic catabolism during exercise h Sustained activity: steady-state aerobic catabolism h Sudden, intense exertion: aerobic cat. is not enough Metabolic transitions during exercise (1) at the start: oxygen deficit - unbalance between O 2 need/supply (2) the pay-as-you-go - steady-state aerobic cat. (3) at the end: EPOC [excess postexercise O 2 consumption] - metabolize lactic acid - oxygen debt , but EPOC preferred Supramaximal exercise (1) not enough ATP supply by pay-as-you-go
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (2) lactic acid type of fatigue Light submaximal exercise ATP source varies with exercise or activity duration (1) Sprinter (100-m dash) - anaerobic (a) + phosphogens (b) + O2 stores (c)- total ATP demand, very low b/c short duration (2) A mile race- ATP demand > a+b+c = 25~50% total ATP demand- aerobic metabolism (slow) b slower speed (3) Marathon- ATP demand very high (a+b+c = 2-3% total demand)- aerobic dependency, very high...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online