In which type of metabolism is ATP resynthesis achieved without oxygen?

ATP resynthesis without oxygen occurs during anaerobic metabolism. This type of metabolism does not require oxygen to produce ATP and is typically highlighted during high-intensity activities when the demand for energy exceeds the supply of oxygen available to the muscles.

In anaerobic metabolism, glucose is broken down to produce ATP through pathways such as glycolysis, and in the absence of oxygen, it can be further processed via fermentation. This process is notable for generating energy quickly, although it is less efficient than aerobic metabolism in terms of the total amount of ATP produced per glucose molecule.

This distinction is particularly important in physical education, as understanding the different energy systems helps athletes strategize their training and energy use during various types of physical activity.