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Effects of body posture on local sweating and sudomotor outflow as estimated using sweat expulsion
- Source :
-
Autonomic Neuroscience: Basic & Clinical . Apr2005, Vol. 119 Issue 1, p48-55. 8p. - Publication Year :
- 2005
-
Abstract
- Abstract: To estimate the effects of changes in body posture on sudomotor function, sweat rates on the forearm, chest and thigh, tympanic temperature (T ty), and skin temperatures were recorded in an upright sitting and a supine position under a hot environment of 40 °C T a and 40% relative humidity for 60 min. Sweat expulsions were identified on sweat rate curves and their rates (F sw) were calculated. T ty was higher, and its initial fall was greater, in the supine position than in the sitting position. On the forearm and the chest, the regression line relating sweat rate to mean body temperature (T mb) had a gentler slope in the supine position, whereas on the thigh, it showed a steeper slope. The regression line relating F sw to T mb had a steeper slope in the supine position than in the sitting position, suggesting that the gain in the mechanisms for central integration and rhythm-generation was enhanced in the supine position. The parameter of sweat rate divided by F sw was lower on the forearm and the chest, whereas it was higher on the thigh in the supine position than in the sitting position, suggesting that sudomotor outflow was modified at the spinal cord in association with skin pressure. It was concluded that body posture affects sudomotor functions through both brain and spinal mechanisms. [Copyright &y& Elsevier]
- Subjects :
- *POSTURE
*FOREARM
*HUMAN mechanics
*CENTRAL nervous system
Subjects
Details
- Language :
- English
- ISSN :
- 15660702
- Volume :
- 119
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Autonomic Neuroscience: Basic & Clinical
- Publication Type :
- Academic Journal
- Accession number :
- 17811934
- Full Text :
- https://doi.org/10.1016/j.autneu.2005.02.002