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KMID : 0812020120180020194
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Korean Journal of Neurogastroenterology and Motility
2012 Volume.18 No. 2 p.194 ~ p.199
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Influence of Full-body Water Immersion on Esophageal Motor Function and Intragastric Pressure
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Aimi Masahito
Furuta Kenji
Saito Tsukasa
Shimura Shino
Fukazawa Kousuke
Ohara Shunji
Uno Goichi
Tobita Hiroshi
Adachi Kyoichi
Kinoshita Yoshikazu
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Abstract
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Background/Aims: In Japan, it is customary to take a daily bath during which the body is immersed in water to the neck. During full-body immersion, hydrostatic pressure is thought to compress the chest and abdomen, which might influence esophageal motor function and intragastric pressure. However, whether water immersion has a significant influence on esophageal motor function or intragastric pressure has not been shown. The aim of this study was to clarify the influence of full-body water immersion on esophageal motor function and intragastric pressure.
Methods: Nine healthy male volunteers (mean age 40.1 ± 2.8 years) were enrolled in this study. Esophageal motor function and intragastric pressure were investigated using a high-resolution 36-channel manometry device.
Results: All subjects completed the study protocol. Intragastric pressure increased significantly from 4.2 ± 1.1 to 20.6 ± 1.4 mmHg with full-body water immersion, while the lower esophageal high pressure zone (LEHPZ) value also increased from 20.5 ± 2.2 to 40.4 ± 3.6 mmHg, with the latter being observed regardless of dietary condition. In addition, peak esophageal peristaltic pressure was higher when immersed as compared to standing out of water.
Conclusions: Esophageal motor function and intragastric pressure were altered by full-body water immersion. Furthermore, the pressure gradient between LEHPZ and intragastric pressures was maintained at a high level, and esophageal peristaltic pressure was elevated with immersion.
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KEYWORD
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Esophageal sphincter, lower, Gastroesophageal reflux, Peristalsis
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