Factors Affecting ATP Production

The rate of aerobic respiration can be influenced by several physiological variables.

Oxygen Availability:

Oxygen delivery depends on cardiac output, haemoglobin concentration, and capillary density. Well-trained athletes having higher VO2 max values, allowing greater oxygen utilisation and delayed fatigue (Monash University, 2025b).

Enzyme Activity and Temperature:

Respiratory enzymes function optimally at approximately 37 degrees. Low temperatures reduce enzyme activity and ATP production, while high temperatures denature enzyme, stopping aerobic respiration from occurring at all (Monash University, 2025b).

Glycogen Availability:

Low glycogen stores reduce the rate of ATP production and contributes to fatigue in prolonged events.