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BioMed Research International
Volume 2013 (2013), Article ID 121030, 9 pages
http://dx.doi.org/10.1155/2013/121030
Clinical Study

Exercise Trajectories of Women from Entry to a 6-Month Cardiac Rehabilitation Program to One Year after Discharge

1Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8N 3Z5
2Hamilton Health Sciences, 237 Barton Street East, Hamilton, ON, Canada L8L 2X2
3Dalhousie University, 5790 University Avenue, Halifax, NS, Canada B3H 1V7
4Niagara Health System, 155 Ontario Street, 2nd Floor, St. Catherines, ON, Canada L2R 5K3
5University of Toronto, 1 King's College Circle, Room 2370,Toronto, ON, Canada M5S 1A8

Received 24 April 2013; Revised 13 August 2013; Accepted 14 August 2013

Academic Editor: Thomas O. Obisesan

Copyright © 2013 Heather M. Arthur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Physical activity is associated with reduced mortality and morbidity. Cardiac rehabilitation (CR) is an effective intervention for patients with cardiovascular disease (CVD). Unfortunately, women are less likely to engage in, or sustain, regular physical activity. Objectives were to (1) describe women’s guidelines-based levels of physical activity during and after CR and (2) determine the physical activity trajectories of women from entry to CR to one year after CR. Methods and Results. A prospective, longitudinal study of 203 women with CVD enrolled in a 6-month CR program. Physical activity was measured using the Godin Leisure Time Exercise Questionnaire (LSI), focusing on moderate-strenuous activity. Data were analyzed using latent class growth analysis (LCGA) and logistic regression. Mean scores on the LSI showed women to be “active” at all follow-up points. LCGA revealed a two-class model, respectively, called “inactive relapsers” and “moderately active relapsers.” Predictors of the “moderately active relapsers” class were employment status and diagnosis of myocardial infarction. Conclusions. Women achieved the recommended physical activity levels by the end of CR and sustained them until one year after CR. LCGA allowed us to determine the class trajectories associated with moderate-strenuous activity and, from these, to identify implications for targeted intervention.