Cold pain prolongs gastric emptying of liquid but not solid meal: an electrical impedance tomography (EIT) study |
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Authors: | Yasuyuki Nakae Mieko Kagaya Rieko Takagi Yasuko Matsutani Hiroshi Horibe Takaharu Kondo |
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Institution: | (1) Research Center of Health, Physical Fitness and Sports, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan, JP;(2) Department of Food and Nutrition, Sugiyama Jogakuen University School of Life Studies, Nagoya, Japan, JP |
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Abstract: | Stressful stimuli are reported to affect gastric emptying. However, methods for measuring gastric emptying are, in themselves,
stressful. Electrical impedance tomography (EIT) is a method for measuring gastric emptying noninvasively. We used EIT to
measure gastric emptying of liquid and solid meals to determine the effect of cold pain stress on gastric emptying. EIT (DAS-01P
APT system; University of Sheffield, UK) was carried out in six healthy women (age, 21.6 ± 0.4 mean ± SD] years) who had
ingested a liquid (potage, 263 g; 139 kcal) or solid (beef patty, 205 g; 435 kcal) test meal. Cold pain stimuli consisted
of repeated immersions of the subject's non-dominant hand into ice water (4°C) for 1 min, with a 15-s recovery period between
immersions, for a total of 20 min. For the control stimulus, water at 37°C was used. The cold pain stimulus was applied immediately
after the ingestion of a test meal. All studies were carried out randomly in each subject at intervals of more than 1 week.
With cold pain, the half emptying time of the liquid meal was significantly greater than that with the control stimulus (47.6
± 26.1 min vs 28.1 ± 10.8 min, P < 0.05). For the solid meal, the half emptying time did not differ between stimuli (101.9 ± 44.8 min with cold pain vs 92.6
± 30.5 min with control stimulus). There were no significant differences in lag time between the liquid and solid meals. Cold
pain stress delayed gastric emptying of liquid but not solid meals.
Received: September 28, 1999 / Accepted: February 25, 2000 |
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Keywords: | : cold pain gastric emptying solid meal liquid meal electrical impedance tomography |
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