Abstract 14278: The Impact of American-Style Football Participation on Left Ventricular Systolic Function
Introduction: Participation in American-Style Football (ASF) has been associated with the development of hypertension and left ventricular hypertrophy (LVH). To date, data defining the impact of ASF participation on myocardial function are lacking. We hypothesized that the LVH developed among ASF participants is accompanied by relative impairment in systolic function as measured by LV global longitudinal strain (GLS), a well-established marker of subclinical LV dysfunction.
Methods: Collegiate ASF athletes were studied before (preseason) and after (postseason) a single competitive season with transthoracic echocardiography. LV systolic function was assessed using complementary parameters including GLS (speckle tracking) and ejection fraction (EF, 2D biplane). Analyses were stratified as a function of lineman (LM, n=30) versus non-lineman (NLM, n=57) field position.
Results: Among 87 athletes analyzed, ASF participation was associated with significant increases in systolic blood pressure (SBP, 119±10 vs. 124±13 mmHg; p<0.05), BSA-indexed LV mass (LVMI, 95±15 vs. 104±13 g/m2; p<0.05), and prevalent LVH (8% vs. 25%, p<0.05). The majority of LM with LVH (9/11, 82%) had concentric geometry while hypertrophied NLM (8/10, 80%) had eccentric geometry. In this context, LM demonstrated a significant decrease in GLS which was associated with changes in LV mass and SBP while NLM demonstrated an increase in GLS unrelated to either mass or SBP (Figure). Left ventricular EF was similar at both time points and did not differ by field position.
Conclusions: The geometry and functional correlates of LVH among ASF participants vary by field position. Athletes at the LM position appear to be at risk for developing concentric LVH with relative impairment of GLS, while NLM athletes tend to harbor eccentric LVH without decrement in GLS. The underlying mechanisms, reversibility, and long-term prognostic significance of these findings represent important areas of future study.
- Athletes and heart disease
- Ventricular function
- Cardiac hypertrophy
- Ventricular remodeling
Author Disclosures: J. Lin: None. J. Deluca: None. F. Wang: None. B. Berkstresser: None. M. Wasfy: None. A. Hutter: None. R. Weiner: None. A. Baggish: None.
- © 2015 by American Heart Association, Inc.