High-impact exercise in adulthood and vertebral dimensions in midlife : the Northern Finland Birth Cohort 1966 study
Oura, Petteri; Paananen, Markus; Niinimäki, Jaakko; Tammelin, Tuija; Auvinen, Juha; Korpelainen, Raija; Karppinen, Jaro; Junno, Juho-Antti (2017-11-06)
Oura, P., Paananen, M., Niinimäki, J., Tammelin, T., Auvinen, J., Korpelainen, R., … Junno, J.-A. (2017). High-impact exercise in adulthood and vertebral dimensions in midlife - the Northern Finland Birth Cohort 1966 study. BMC Musculoskeletal Disorders, 18(1). https://doi.org/10.1186/s12891-017-1794-8
© The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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https://urn.fi/URN:NBN:fi-fe2019091728449
Tiivistelmä
Abstract
Background: Vertebral size and especially cross-sectional area (CSA) are independently associated with vertebral fracture risk. Previous studies have suggested that physical activity and especially high-impact exercise may affect vertebral strength. We aimed to investigate the association between high-impact exercise at 31 and 46 years of age and vertebral dimensions in midlife.
Methods: We used a subsample of 1023 individuals from the Northern Finland Birth Cohort 1966 study with records of self-reported sports participation from 31 and 46 years and MRI-derived data on vertebral dimensions from 46 years. Based on the sports participation data, we constructed three impact categories (high, mixed, low) that represented longitudinal high-impact exercise activity in adulthood. We used linear regression and generalized estimating equation (GEE) models to analyse the association between high-impact exercise and vertebral CSA, with adjustments for vertebral height and body mass index.
Results: Participation in high-impact sports was associated with large vertebral CSA among women but not men. The women in the ‘mixed’ group had 36.8 (95% confidence interval 11.2–62.5) mm² larger CSA and the women in the ‘high’ group 43.2 (15.2–71.1) mm² larger CSA than the ‘low’ group.
Conclusions: We suggest that participation (≥ 1/week) in one or more high-impact sports in adulthood is associated with larger vertebral size, and thus increased vertebral strength, among middle-aged women.
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