Individual Variability to Aerobic Exercise Training

The purpose of this study is to: 1) determine the cohort specific technical error to use in the categorization of response rate; 2) determine if an individualized intensity prescription is superior to a standard approach in regards to VO2max and cardiometabolic risk factor responsiveness; 3) Investigate the time course changes throughout 12 weeks of CRF training between an individualized and standardized exercise prescription; and 4) determine if non-responders can become responders if the exercise intensity prescription is modified. It is hypothesized that: 1. The individualized method will elicit a greater responsiveness for all measurements when compared to the standardized method. 2. There will be a greater amount of non-responders in the standardized group (based on changes in VO2max). 3. When participants in the standardized group are considered non-responders and change their exercise prescription to the individualized group, they will become a responder (based on changes in VO2max)