Comparison of cardiovascular autonomic responses in elderly and young males during head-out water immersion.

@article{Itoh2007ComparisonOC,
  title={Comparison of cardiovascular autonomic responses in elderly and young males during head-out water immersion.},
  author={Masahiro Itoh and Yoshiyuki Fukuoka and Shinobu Kojima and Haruo Araki and Norio Hotta and Tomohiro Sakamoto and Katsuhide Nishi and Hisao Ogawa},
  journal={Journal of cardiology},
  year={2007},
  volume={49 5},
  pages={241-50}
}
OBJECTIVES To investigate the cardiovascular autonomic responses to head-out water immersion in thermoneutral water. The effects of immersion levels (neck, chest, navel) and breathing frequencies (4, 6, 10, 15 times/min) were compared with in ambient air and spontaneous breathing as a control. METHODS Spectral analysis of heart rate variability was recorded in 11 young (mean age 20 +/- 1 years) and 11 elderly (mean age 68 +/- 6 years) healthy male subjects during water immersion. Modeling was… CONTINUE READING