Final answer:
The units of the estimated VO2max from the YMCA cycle ergometer equation based on maximum workload are milliliters of oxygen per kilogram of body weight per minute (ml/kg/min).
Step-by-step explanation:
The units of the estimated VO2max that you get from the YMCA cycle ergometer equation based on maximum workload are milliliters of oxygen per kilogram of body weight per minute (ml/kg/min). This unit is used to measure the maximum amount of oxygen that a person can use during exercise relative to their body weight.