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Article Number - 7D0D18157876


Vol.7(2), pp. 7-14 , March 2016
https://doi.org/10.5897/JPAP2015.0101
ISSN: 2141-260X


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Full Length Research Paper

Comparative study of three methods for QT interval correction in African national level football players



Abdoulaye Ba*
  • Abdoulaye Ba*
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Abdou Khadir Sow
  • Abdou Khadir Sow
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Mor Diaw
  • Mor Diaw
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Valentin Ouedraogo
  • Valentin Ouedraogo
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Maïmouna Touré
  • Maïmouna Touré
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Arnaud Jean Florent Tiendrebeogo
  • Arnaud Jean Florent Tiendrebeogo
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Ghislain Loubano-voumbi
  • Ghislain Loubano-voumbi
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Salimata Diagne Houndjo
  • Salimata Diagne Houndjo
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Aissatou Seck
  • Aissatou Seck
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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Samuel Honoré Mandengue
  • Samuel Honoré Mandengue
  • Unité de Physiologie de l’ Exercice et du Sport, Faculté des Sciences, Faculté de Médecine et des Sciences pharmaceutiques, Université de Douala, Bassa-Douala, Cameroun.
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Djibril Seck
  • Djibril Seck
  • Institut National Supérieur de l’ Education Populaire et du Sport (INSEPS), UCAD, Dakar, Sénégal.
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Abdoulaye Samb
  • Abdoulaye Samb
  • Laboratoire de Physiologie et d’Explorations Fonctionnelles, FMPO, UCAD, Dakar, Sénégal.
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 Received: 24 August 2015  Accepted: 03 November 2015  Published: 31 March 2016

Copyright © 2016 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


The aim of this study was to compare three correction methods of QT interval in African national level football players. QT interval was measured in D2 lead on resting electrocardiogram (ECG) in 216 Black male football players (age range 18 to 35 years). Corrected QT (QTc) was calculated using Bazett, Fridericia, and Framingham’s formulas. Means and percentages of long QT (QTc>440 ms and QTc≥470 ms) and short QT (QTc≤320 ms) were compared. Correlations and agreement criteria between correction methods were researched, and effects size were calculated. Heart rate was 59±9 beats/min (40 to 84) and measured QT (QTm) at 383.1±31.4 ms (320 to 480). QTc were 378.9±25.7, 380.1±23.8, and 383.1 ± 31.3 respectively with Bazett, Fridericia, and Framingham formulas; differences were not significant. According to the definition QTc>440 ms, no long QT was found using Fridericia formula whereas Bazett and Framingham showed 1.4% of long QT. Only Framingham’s formula showed long QT according to the definition QTc≥470 ms (0.9%). Framingham’s formula also showed significant difference with short QT as compared to the other methods (5.1 vs. 0.46%; p=0.008). The lower QTc value was 320 ms in all methods. Correlation and agreement were better between Bazett’s and Fridericia’s formula. Framingham’s formula showed higher proportions of long and short QT, while Fridericia’s one reduced them. Bazett's formula gave intermediate percentages. QTc˂320 ms could be used to define short QT; 320 ms representing the lower limit in our study for the 3 formulas. Our data did not allow us to deduce a definition for the long QT. The limits of QTc ≥ 470 ms for men and QTc ≥ 480 ms for women, more adopted now in the literature, were suggested.

Key words: QT interval, electrocardiogram, football player, Bazett, Fridericia, Framingham.

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APA Ba, A., Sow, A. K., Diaw, M., Ouedraogo, V., Touré, M., Tiendrebeogo, A. J. F., Loubano-voumbi, G., Houndjo, S. D., Seck, A., Mandengue, S. H., Seck, D., & Samb, A. (2016). Comparative study of three methods for QT interval correction in African national level football players. Journal of Physiology and Pathophysiology, 7(2), 7-14.
Chicago Abdoulaye Ba, Abdou Khadir Sow,  Mor Diaw, Valentin Ouedraogo, Maïmouna Tour&e, Arnaud Jean Florent Tiendrebeogo, Ghislain Loubano-voumbi, Salimata Diagne Houndjo, Aissatou Seck,  Samuel Honor&e Mandengue, Djibril Seck and Abdoulaye Samb,. "Comparative study of three methods for QT interval correction in African national level football players." Journal of Physiology and Pathophysiology 7, no. 2 (2016): 7-14.
MLA Abdoulaye Ba, et al. "Comparative study of three methods for QT interval correction in African national level football players." Journal of Physiology and Pathophysiology 7.2 (2016): 7-14.
   
DOI https://doi.org/10.5897/JPAP2015.0101
URL http://academicjournals.org/journal/JPAP/article-abstract/7D0D18157876

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