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Glibbery M, Banks L, Altaha MA, Bentley RF, Konieczny K, Yan AT, Dorian P, Deva DP, Goodman JM, Connelly KA. Atrial structure and function in middle-aged, physically-active males and females: A cardiac magnetic resonance study. Clin Cardiol 2021; 44:1467-1474. [PMID: 34469002 PMCID: PMC8495091 DOI: 10.1002/clc.23707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/29/2021] [Accepted: 07/15/2021] [Indexed: 12/14/2022] Open
Abstract
Recent studies have reported on an association between endurance sport, atrial enlargement and the development of lone atrial fibrillation in younger, male cohorts. The atrial morphology and function of middle‐aged, physically‐active males and females have not been well studied. We hypothesized that middle‐aged males would demonstrate larger left atrium (LA) and right atrium (RA) volumes compared to females, but atrial function would not differ. LA and RA volume and function were evaluated at rest in healthy adults, using a standardized 3.0Tesla cardiac magnetic resonance protocol. Physical activity, medical history, and maximal oxygen consumption (V˙O2peak) were also assessed. Physically‐active, middle‐aged men (n = 60; 54 ± 5 years old) and women (n = 30; 54 ± 5 years old) completed this study. Males had a higher body mass index, systolic blood pressure, and V˙O2peak than females (p < .05 for all), despite similar reported physical activity levels. Absolute and BSA and height‐indexed LA and RA maximum volumes were higher in males relative to females, despite no differences in ejection fractions (p < .05 for all). In multivariable regression, male sex p < .001) and V˙O2peak (p = .004) were predictors of LA volume (model R2 = 0.252), whereas V˙O2peak (p < .001), male sex (p = .03), and RV EF (p < .05) were predictors of RA volume (model R2 = 0.377). While middle‐aged males exhibited larger atrial volumes relative to females, larger, prospective studies are needed to explore the magnitude of physiologic atrial remodeling and functional adaptations in relation to phenotypic factors.
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Affiliation(s)
- Meghan Glibbery
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Canada
| | - Laura Banks
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Canada
| | - Mustafa A Altaha
- Faculty of Medicine, University of Toronto, Toronto, Canada.,Division of Cardiology, St. Michael's Hospital, Toronto, Canada
| | - Robert F Bentley
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Canada
| | - Kaja Konieczny
- Faculty of Medicine, University of Toronto, Toronto, Canada.,Division of Cardiology, St. Michael's Hospital, Toronto, Canada
| | - Andrew T Yan
- Faculty of Medicine, University of Toronto, Toronto, Canada.,Division of Cardiology, St. Michael's Hospital, Toronto, Canada.,Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada.,Department of Medical Imaging, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | - Paul Dorian
- Faculty of Medicine, University of Toronto, Toronto, Canada.,Division of Cardiology, St. Michael's Hospital, Toronto, Canada.,Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | - Djeven P Deva
- Faculty of Medicine, University of Toronto, Toronto, Canada.,Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada.,Department of Medical Imaging, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | - Jack M Goodman
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Canada.,Mount Sinai Hospital, Division of Cardiology, University of Toronto, Toronto, Canada
| | - Kim A Connelly
- Faculty of Medicine, University of Toronto, Toronto, Canada.,Division of Cardiology, St. Michael's Hospital, Toronto, Canada.,Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
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