- •Greater ambivalence toward physical activity was associated with decreased MVPA.
- •Greater ambivalence toward physical activity was related to more sedentary time.
- •Greater ambivalence toward physical activity was associated with poorer VO2Peak.
Adolescents with congenital heart disease (CHD) are insufficiently physically active. Given that increasing physical activity may reduce their cardiovascular risk, it is important to identify correlates of this behavior. Perceived benefits of and barriers to physical activity are associated with physical activity engagement. Existing research has only considered these constructs separately. This population may be ambivalent toward physical activity (i.e., perceive both strong benefits and barriers). The association of ambivalence and physical activity related outcomes is unknown among this at-risk population.
Determine the association of ambivalence and sedentary behavior, moderate-to-vigorous physical activity (MVPA), and cardiorespiratory fitness (VO2Peak) among adolescents with CHD.
The present study is an analysis of data from an eligibility assessment for a randomized clinical trial of an intervention to promote MVPA among adolescents aged 15 to 18 years with moderate or complex CHD. Participants (N = 84) completed a survey assessing perceived benefits and barriers from which ambivalence toward physical activity was calculated, an exercise stress test to measure VO2Peak, and wore an accelerometer for one week to determine their engagement in sedentary behavior and MVPA. Linear regression analyses determined associations between ambivalence and physical activity related outcomes.
Greater ambivalence toward physical activity was associated with increased sedentary behavior, decreased MVPA, and reduced VO2Peak, adjusting for demographic and clinical covariates.
Ambivalence is associated with objectively measured physical activity (sedentary behavior, MVPA) and a biomarker of cardiovascular health (VO2Peak). Screening for ambivalence may help clinicians identify those most likely to benefit from physical activity-related education.
Abbreviations:BMI (body mass index), CHD (congenital heart disease, MVPA, moderate-to-vigorous physical activity), VO2Peak (cardiorespiratory fitness)
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Published online: December 30, 2022
Accepted: December 22, 2022
Received in revised form: December 22, 2022
Received: September 22, 2022
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