Effects of respiratory time ratio on heart rate variability and spontaneous baroreflex sensitivity

Yong Ping Wang, Terry B.J. Kuo, Chun Ting Lai, Jui Wen Chu, Cheryl C.H. Yang

研究成果: 雜誌貢獻文章同行評審

20 引文 斯高帕斯(Scopus)

摘要

Paced breathing is a frequently performed technique for cardiovascular autonomic studies. The relative timing of inspiration and expiration during paced breathing, however, is not consistent. We, therefore, examined whether indexes of heart rate variability and spontaneous baroreflex sensitivity would be affected by the respiratory time ratio that is set. We studied 14 healthy young adults who controlled their breathing rates to either 0.1 or 0.25 Hz in the supine and sitting positions. Four different inspiratory-to-expiratory time ratios (I/E) (uncontrolled, 1:1, 1:2, and 1:3) were examined for each condition in a randomized order. The results showed spectral indexes of heart rate variability and spontaneous baroreflex sensitivity were not influenced by the I/E that was set during paced breathing under supine and sitting positions. Porta's and Guzik's indexes of heart rate asymmetry were also not different at various I/E during 0.1-Hz breathing, but had larger values at 1:1 during 0.25-Hz breathing, although significant change was found in the sitting position only. At the same time, Porta's and Guzik's indexes obtained during 0.1-Hz breathing were greater than during 0.25-Hz breathing in both positions. The authors suggest that setting the I/E during paced breathing is not necessary when measuring spectral indexes of heart rate variability and spontaneous baroreflex sensitivity under the conditions used in this study. The necessity of paced breathing for the measurement of heart rate asymmetry, however, requires further investigation.
原文英語
頁(從 - 到)1648-1655
頁數8
期刊Journal of Applied Physiology
115
發行號11
DOIs
出版狀態已發佈 - 十二月 1 2013
對外發佈Yes

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

指紋 深入研究「Effects of respiratory time ratio on heart rate variability and spontaneous baroreflex sensitivity」主題。共同形成了獨特的指紋。

引用此