Why doesn't anaerobic respiration provide endurance energy?

Oxygen respiration uses molecular oxygen as the final electron acceptor, while anaemic respiration uses other chemicals like iron, sulfate, etc. Molecular oxygen can and indeed likes to accept electrons at a lower energy level than any of the other alternatives available to life on earth (it is indeed one of the lowest energy electron acceptors in existence in the universe allowable by the laws of chemistry - the technical term for this is that molecular oxygen is a very strong oxidizer). read more

Anaerobic respiration, which doesn't use oxygen, can supply muscles with energy much more quickly than aerobic respiration, and serves as the primary energy source during a sprint. A sprinter's muscles make use of two anaerobic pathways: the alactic and lactic acid systems. read more