Extension Study
Subjects who completed the original 1-year trial were
contacted by phone to detail study procedures, assess
interest and eligibility, and schedule the extended follow-up
assessment visit. Both (i) participants who have maintained
exercise participation through the 4-year follow-up visit
(‘‘long-term intervention group’’), and (ii) participants who
have discontinued participation following original trial
completion (‘‘control group’’) were included into the
extension study. Attendance lists were checked to verify
participant’s status regarding participation in community
exercise classes since the original trial completion. Participants
were excluded from the follow-up assessment if they
reported any major orthopedic surgery or limb fracture less
than 4 months prior to enrollment into the extension study.