Open AccessLong-Term Enrollment in Cardiac Rehabilitation Benefits of Cardiorespiratory Fitness and Skeletal Muscle Strength in Females with Cardiovascular Disease
Author(s) -
Mike Pryzbek,
Maureen J. MacDonald,
Paul W. Stratford,
Julie Richardson,
Angelica McQuarrie,
Robert S. McKelvie,
Ada Tang
Publication year - 2021
Publication title -
women's health reports
Language(s) - English
Resource type - Journals
ISSN - 2688-4844
DOI - 10.1089/whr.2021.0055
Subject(s) - cardiorespiratory fitness , medicine , vo2 max , rehabilitation , population , muscle strength , aerobic exercise , physical fitness , physical therapy , skeletal muscle , strength training , cardiology , heart rate , blood pressure , environmental health
Background: The benefits of short-term cardiac rehabilitation (CR) for improving fitness are well known, but the effects of long-term maintenance-phase CR are less well established. Moreover, changes in cardiorespiratory fitness (CRF) and muscle strength with long-term CR have never been examined specifically in females, a population that is under-researched and under-represented in cardiovascular research. The objective of this retrospective pilot study was to estimate changes in CRF and muscle strength in females enrolled in a long-term CR program. Methods: Data from 39 females (mean ± standard deviation age 65 ± 9 years) enrolled for at least 1 year in a maintenance-phase CR program were analyzed. The program consisted of aerobic and resistance training, and data were collected annually for CRF (peak oxygen consumption [VO 2 peak, mL/kg/min]) and skeletal muscle strength (one-repetition maximum tests for chest press, seated row, and knee extension, kg). Mixed-model analyses were used to determine changes in CRF over the 5-year follow-up (203 observations) and muscle strength over 6 years (108 observations). Results: The CRF increased in females by 1.8%/year over 5 years of CR enrollment, and muscle strength increased by 0.6%-2.1%/year over 6 years. These findings are in contrast to the expected age-related declines in fitness over time. Conclusion: The positive long-term benefits on CRF and muscle strength in females provide initial preliminary support for maintenance-based CR, especially given that this population is commonly under-researched and under-represented in the CR literature.