gms | German Medical Science

33rd International Congress on Electrocardiology

International Society of Electrocardiology

Evaluation The Children Ecg Stress Test In View Of Age And Gender

Meeting Abstract

  • K. Baciuliene - Institute of Cardiology Kaunas University of Medicine, Kaunas, Litauen
  • A. Vainoras - Institute of Cardiology Kaunas University of Medicine, Kaunas, Litauen
  • corresponding author presenting/speaker L. Gargasas - Institute of Cardiology Kaunas University of Medicine, Kaunas, Litauen

33rd International Congress on Electrocardiology. Cologne, 28.06.-01.07.2006. Düsseldorf, Köln: German Medical Science; 2007. Doc06ice047

The electronic version of this article is the complete one and can be found online at:

Published: February 8, 2007

© 2007 Baciuliene et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.



Question: The aim of this study was to determine the age and gender related functional parameters of cardiovascular system in children and adolescents.

Method Used: 57 girls and 67 boys (7-18 years) participated in the study. Participants were divided into 6 groups according to their age (7-10, 11-14, 15-18 years) and gender. The bicycle ergometry test (VEM) was performed using computerized functional test analysis system “Kaunas-Load”. At rest, during load and recovery 12 lead ECG, systolic (S), diastolic (D) blood pressure were recorded, and values of HR, JT interval,. integral parameters JT/RR, (S-D)/S and Sv were calculated. Integral parameter Sv is defined as Sv = k ( (dRR)2 + (dN)2 + (dJT)2 )1/2; where k is normalizing parameter, depending on gender, dRR –shortening of RR, dN –change of developed power and dJT –shortening of JT. For recovery processes half periods of recovery (HPR) were determined.

Results: The decrease of HRmax was significant in the eldest children as compared with such of middle-age. The significant difference of HRmax between genders is observable between the middle-age boys’ and girls’ groups. A statistically significant difference of JT/RRmax between the youngest and middle-age boys was revealed. Sv varied from 47,5 in the youngest girls to 60,8 in the eldest boys. With age Sv increased statistically significantly, but in girls it stabilizes at 11-14 years, and in boys it increases from 11-14 years. The HPR of HR significantly increased with age in boys and girls groups. The HPR of JT increased statistically significantly with age and in girls it was longer than in boys.

Conclusion: Changes in VEM parameters (HR, JT, JT/RR, HPR, Sv and others), which outline the dynamics of cardiovascular functions, varied significantly according to child’s age and gender.