FIGURE 3.

Number of booster sessions as a function of group. MST = motor skill training; SFE = strength and flexibility exercise. Participants who attended 0 booster sessions includes all participants randomized to boosters who did not attend the first booster session (randomized to boosters but discontinued trial participation prior to booster assignment, refused to attend the 6-month lab visit where they were informed of booster assignment, or refused boosters). Participants who required no additional boosters were independent in their self-management program at the first booster and participants who required additional boosters were not.