1.why does cellular respiration in muscles that produces lactic acid supply less energy compared to aerobic respiration?

2.A 100-metre sprinter usually holds his breath while running compared with a long-distance runner. after running, tje sprinter needs seven litres of oxygen to remove the lactic acid in his muscle, EXPLAIN THIS DIFFERENCE BETWEEN THE SPRINTER AND THE LONG-DISTANCE RUNNER

*please help me*
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