Article

OBJECTIVE: To objectively measure changes in both moderate-to-vigorous physical
activity (MVPA) and sedentary behavior (SB) during and after standard cardiac
rehabilitation (CR). DESIGN: Prospective cohort study. SETTING: Outpatient CR
center. PARTICIPANTS: Patients (N=135) with acute coronary syndrome (ACS) who
completed CR. INTERVENTIONS: Multidisciplinary CR according to current guidelines. MAIN OUTCOME MEASURES: The proportion of time spent in MVPA and SB
was objectively measured with an accelerometer. The distribution of time in MVPA
and SB was also determined (eg, average length of time periods spent in MVPA and
SB). All measurements were obtained before CR, after CR, and at 1-year follow-up.
RESULTS: Patients' time in MVPA during waking hours increased by .65% (
approximately 5min) during CR (P=.002) and remained increased at 1-year follow-up
(P=.037). The MVPA distribution did not change. During CR, time spent in SB
decreased by 2.49% ( approximately 22min; P<.001), and SB time became more
fragmented with more breaks and shorter SB periods (P<.001). These SB
improvements were maintained at 1-year follow-up (P<.001). CONCLUSIONS: Patients
with ACS achieved a small improvement in MVPA time during CR, but MVPA
distribution remained unchanged. More substantial improvements occurred for SB
time and distribution. However, by the end of CR, patients still spent relatively
little time in MVPA and a long time in SB, which is known to be detrimental to
cardiovascular health. Although CR programs have the potential to improve
physical behavior, our findings highlight the need to develop adjusted CR targets
that address the amount and distribution of MVPA and SB.
CI - Copyright (c) 2017 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS