The intraocular pressure response to dehydration : a pilot study
Data(s) |
2012
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Resumo |
This study was designed to determine the Intraocular Pressure (IOP) response to differing levels of dehydration. Seven males participated in a 90 minute treadmill walk (5 km/h and 1 % grade) in both a cool (22 °C) and hot (43 °C) climate. At Baseline and at 30 minute intervals measurements of IOP, by tonometery, and indicators of hydration status (nude weight and plasma osmolality (Posm)) were taken. Body temperature and heart rate were also measured at these time points. Statistically significant interactions (time point (4) by trial (2)) were observed for IOP (F = 10.747, p = 0.009) and body weight loss (F = 50.083, p < 0.001) to decrease, and Posm (F = 34.867, p < 0.001) to increase, by a significantly greater amount during the hot trial compared to the cool. A univariate general linear model showed a significant relationship between IOP and body weight loss (F = 37.63, p < 0.001) and Posm (F = 38.53, p < 0.001). A significant interaction was observed for body temperature (F = 20.908, p < 0.001) and heart rate (F = 25.487, p < 0.001) between the trials and time points, but there was negligible association between these variables and IOP (Pearson correlation coefficient < ±0.5). The present study provides evidence to suggest that IOP is influenced by hydration status. |
Formato |
application/pdf |
Identificador | |
Publicador |
Springer |
Relação |
http://eprints.qut.edu.au/54049/1/ePrints_manuscript.pdf DOI:10.1007/s00421-011-2143-5 Hunt, Andrew P., Feigl, Beatrix, & Stewart, Ian B. (2012) The intraocular pressure response to dehydration : a pilot study. European Journal of Applied Physiology, 112(5), pp. 1963-1966. |
Fonte |
School of Biomedical Sciences; Faculty of Health; Institute of Health and Biomedical Innovation; School of Exercise & Nutrition Sciences |
Palavras-Chave | #110602 Exercise Physiology #111303 Vision Science #Body mass loss #Hypohydration #hydration assessment |
Tipo |
Journal Article |