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KMID : 0613820100200050723
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Journal of Life Science
2010 Volume.20 No. 5 p.723 ~ p.728
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Effect of Abdominal Respiration on the Electrical Axis of ECG in Young Adults
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Youn Ryea-Min
Lee Won-Jun
Kim Young-Sik
Yoon Im-Sil
Jung Han-Na
Nam Jeong-Su
Yoon Joong-Soo
Choi Hyun-Ju
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Abstract
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The effect of abdominal respiration on electrocardiogram readings was examined using a 12-lead ECG in healthy young adults. Ten males and ten females without any cardiac and/or pulmonary problems participated in this study. ECG readings during periods of abdominal respiration and thoracic respiration were compared using a paired t-test. Results showed that the PR interval was longer in males compared to females during the period of abdominal respiration (p＜0.05). There were no differences in amplitudes of the P, R, T waves, QTc, and degree of P axis between abdominal respiration and thoracic respiration in both male and female subjects. However, degrees of QRS axis in male subjects (p＜0.05) and T axis (p＜0.05) in female subjects were increased during the abdominal respiration. Therefore, abdominal respiration may cause positive electrical axis changes in the depolarization and relaxing re-polarization of the ventricles.
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KEYWORD
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ECG, P axis, QRS axis, T axis, abdominal respiration
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