The effect of detraining and reduced training on the physiological adaptations to aerobic exercise training. Even if an individual has a good history of prolonged aerobic training, performance decreases at both the submaximal and maximal levels within weeks of training cessation.
Losses coincide with declines in cardiovascular function and metabolic potential.
The initial rapid decline in VO 2max is related to a decline in maximum cardiac output, which appears to be a functional decline in stroke volume with little or no change in heart rate. This means that if heart rate testing is used to monitor training states, it will not be sensitive to these initial declines in performance potential. Heart rate monitoring could be the cause of erroneous diagnosis of trained states and could contribute to faulty coaching decisions. Return to Table of Contents for this issue .