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Athletic Remodeling in Female College Athletes, the "Morganroth Hypothesis" Revisited.

Kooreman, Z, Giraldeau, G, Finocchiaro, G, Kobayashi, Y, Wheeler, M, Perez, M, Moneghetti, K, Oxborough, D, George, KP, Myers, J, Ashley, E and Haddad, F (2018) Athletic Remodeling in Female College Athletes, the "Morganroth Hypothesis" Revisited. Clinical Journal of Sport Medicine. ISSN 1050-642X

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Abstract

BACKGROUND: There is limited data regarding ventricular remodeling in college female athletes, especially when appropriate scaling of cardiac dimensions to lean body mass (LBM) is considered. Moreover, it is not well established whether cardiac remodeling in female athletes is a balanced process with proportional increase in left ventricular (LV) mass and volume or the right and LV size. METHODS: During the preparticipation competitive screening, 72 female college athletes volunteered to undergo dual energy x-ray absorptiometry scan for quantification of LBM and comprehensive 2D echocardiography including assessment of longitudinal myocardial strain. The athletes were divided in 2 groups according to the intensity of the dynamic and static components of their sport categories, ie, a higher intensity dynamic and resistive group (n = 37 participating in rowing, water polo and lacrosse) and a lower intensity group (n = 35, participating in short distance running, sailing, synchronized swimming, and softball). In addition, we recruited a group of 31 age-matched nonathlete controls. RESULTS: The mean age of the study population was 18.7 ± 1.0 years. When scaled to body surface area, the higher intensity group had 17.1 ± 3.6% (P < 0.001) greater LV mass when compared with the lower intensity group and 21.7 ± 4.0% (P < 0.001) greater LV mass than the control group. The differences persisted after scaling to LBM with 14.2 ± 3.2% (P < 0.001) greater LV mass in the higher intensity group. By contrast, there was no difference in any of the relative remodeling indices including the LV mass to volume ratio, right to LV area ratio, or left atrial to LV volume ratio (P > 0.50 for all). In addition, no significant difference was noted among the 3 groups in LV ejection fraction (P = 0.22), LV global longitudinal strain (P = 0.55), LV systolic strain rate (P = 0.62), or right ventricular global longitudinal strain (P = 0.61). CONCLUSION: Female collegiate athletes participating in higher intensity dynamic and resistive sports have higher indexed LV mass even when scaled to LBM. The remodeling process does however appear to be a balanced process not only at the intraventricular level but also at the interventricular and atrioventricular levels.

Item Type: Article
Additional Information: This is the accepted version of the following article: Kooreman, Zoe; Giraldeau, Geneviève; Finocchiaro, Gherardo; Kobayashi, Yukari; Wheeler, Matthew; Perez, Marco; Moneghetti, Kegan; Oxborough, David; George, Keith, P.; Myers, Jonathan; Ashley, Euan; Haddad, François. Athletic Remodeling in Female College Athletes, the “Morganroth Hypothesis” Revisited. Clinical Journal of Sport Medicine: January 23, 2018 - Volume Publish Ahead of Print - Issue - p doi: 10.1097/JSM.0000000000000501, which has been published in final form at http://dx.doi.org/10.1097/JSM.0000000000000501
Uncontrolled Keywords: 1106 Human Movement And Sports Science
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: Lippincott, Williams & Wilkins
Related URLs:
Date Deposited: 26 Mar 2018 10:44
Last Modified: 26 Mar 2018 10:44
DOI or Identification number: 10.1097/JSM.0000000000000501
URI: http://researchonline.ljmu.ac.uk/id/eprint/8372

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