| dc.description.abstract | Aim
Performing sufficient moderate to vigorous physical activity (MVPA) maintains health in adults with Coronary Artery Disease (CAD). However, adults with coronary artery disease generally overestimate the duration and intensity of their MVPA. It is currently unknown which variables are associated with the misperception of PA in adults with CAD. The aim of this study is to analyse if age, type of CAD, type of Cardiac Rehabilitation (CR), social support, self-efficacy and kinesiophobia are associated with the difference between measured and perceived MVPA levels in patients with CAD, during a CR program.
Methods
A two-centre observational cross-sectional study was conducted within the department of Rehabilitation Medicine of the University Medical Center Groningen between 8 January and 20 April 2018. Adults with CAD, following an outpatient CR program, were included. Perceived MVPA was assessed with the Short Questionnaire to Assess Health enhancing Physical Activity and compared with ActivPAL3tm activity monitor outcomes. The difference between perceived and measured MVPA levels was analysed for associations with patient and disease characteristics.
Results
Participants significantly (p < 0.001) overestimated MVPA with a median of 839 [IQR: 232;1491] minutes per week. In the complete dataset (n=51), a multiple linear regression with the difference between perceived and measured MVPA as dependent variable showed that type of CAD significantly (p = 0.013) contributed to the regression equation.
Conclusion
Patients with CAD overestimate perceived MVPA. Type of CAD was the only variable associated with the difference between perceived and measured MVPA levels.
Clinical Relevance
Assessment of self-reported MVPA, such as questionnaires, should be handled with caution due to self-reported overestimation. A misperception of PA misleads the patient’s beliefs of achieving exercise recommendations which obstructs behavioural change. More knowledge about the cause of misperception is necessary for maintaining long term physical fitness and health in adults with CAD. | |
