At randomization, each lifestyle participant was assigned a case manager, called a “lifestyle coach.” The lifestyle coach had primary responsibility for delivering the core curriculum, conducting postcore maintenance sessions, eliciting motivation from the participant to achieve the lifestyle goals, and assuring completion of required data collection. There were typically one and a half to two lifestyle coaches (or full-time equivalents) at each clinical center responsible for ∼40 participants. The majority of lifestyle coaches were registered dietitians, with the remainder typically having at least Master’s degree training in exercise physiology, behavioral psychology, or health education.