Timeline. It is anticipated that after recruitment and random assignment to one of the 4 groups, baseline data collection and the 12 week intervention will begin for the first group in month 3 of the 24 month study. Baseline data collection will be completed for all groups by month 12, and post 12-week diet and exercise intervention data collection will be completed by month 15. Post 6 month follow-up data collection will be completed by month 20. The study investigators will share the results of baseline and follow-up findings in manuscripts and at national meetings, in addition to using the generated data to design a larger intervention trial.