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. 2023 Oct 20;7(8):102236.
doi: 10.1016/j.rpth.2023.102236. eCollection 2023 Nov.

Venous thromboembolism among physically active young adult females

Michael Shapiro  1   2 , Eva N Hamulyák  3 , Avi Leader  1   4 , Regev Landau  1   5   6 , Saskia Middeldorp  7 , Anna Gurevich-Shapiro  1   8   9
Affiliations

Venous thromboembolism among physically active young adult females

Michael Shapiro et al. Res Pract Thromb Haemost. .

Abstract

Background: Young adult females are at risk of venous thromboembolism (VTE) due to various acquired and transient factors. In recent years, a growing number of females have engaged in strenuous physical activity, but its role as a risk factor for VTE is uncertain.

Objectives: To determine the incidence of VTE in young adult females engaged in strenuous physical activity.

Methods: A large national cohort of female individuals enlisted in the Israeli Defense Forces between 2012 and 2019 was analyzed. The study group consisted of participants undergoing strenuous physical training during their military service, while the control group maintained regular activity levels. We compared the incidence of VTE between the groups and adjusted for potential risk factors using a multivariate Cox analysis.

Results: The cohort included 160,718 female individuals aged 18 to 21years, of whom 11,745 engaged in strenuous physical activity and 148,973 served as controls. During a mean follow-up of 1.7 years, VTE occurred in 5 individuals (0.04%) in the strenuous activity group and 47 individuals (0.03%) in the control group. The incidence per 10,000 person-years was 2.41 (95% CI, 0.78-5.62) for the strenuous activity group and 1.82 (95% CI, 1.34-2.42) for the controls. Strenuous activity did not increase the risk for VTE in univariate or multivariate regression, with a hazard ratio (HR) of 1.27 (95% CI, 0.49-4.22). Use of oral contraceptives was the only significant risk factor, demonstrating dose effect; HR 1.95 (95% CI, 1.06-3.57) for low dose and HR 3.62 (95% CI, 1.40-9.37) for medium estrogen dose contraceptives.

Conclusion: Strenuous physical activity did not increase the risk for VTE among a large cohort of young adult female individuals.

Keywords: exercise; female; military personnel; pulmonary embolism; venous thromboembolism; young adult.

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Figures

None
Graphical abstract
Figure 1
Figure 1
Study proliferation.
Figure 2
Figure 2
Cumulative incidence of venous thromboembolism stratified by activity level.
See this image and copyright information in PMC

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