what determines an individuals work capacity or

Question

What determines an individual's Work Capacity or VO₂Max?

Both aerobic and anaerobic mechanisms determine an individual's performance capacity. VO₂ max is determined by the constituents of the Oxygen Transport System which include:

• Pulmonary ventilation (Efficiency to breath in or breath out)
• Haemoglobin concentration
• Blood volume and cardiac output
• Peripheral blood flow
• Aerobic metabolism