During Strenuous Exercise

Question

During strenuous exercise
A) an oxygen debt can occur
B) lactic acid can be created in the muscle
C) almost all the contractions are tonic contractions
D) both A and B

Accepted Answer

During strenuous exercise, both an oxygen debt can occur and lactic acid can be created in the muscle. The demand for oxygen during exercise exceeds the body's ability to supply it, resulting in an oxygen debt, which must be repaid during recovery. Lactic acid is a byproduct of anaerobic metabolism, which occurs when the body cannot take in enough oxygen to meet the energy demands of the muscles. This can lead to fatigue and muscle soreness.