Abstract：
:Hypohydration is generally considered to have a negative effect on cognitive function, despite several studies reporting comparable findings between hydration states. Recommendations to avoid moderate dehydration (≥ 2% loss in body mass) are commonly made to athletes, on the provision that this deficit may impair optimal cognitive performance. To determine whether cognitive function is impaired by hypohydration, and investigate the existence of the proposed critical water deficit of ≥2% loss in body mass purported to diminish cognitive performance, we conducted a systematic search of the literature and examined appropriate studies by meta-analysis. Overall, cognitive performance was not found to be impaired by hypohydration (g = -0.177; 95% CI = -0.532-0.179; P = .331). Nor were the underlying cognitive domains (complex attention, executive function, learning and memory) impaired (all P > .236), independent of the incurred fluid loss (less than or >2% loss in body mass), although results were not always homogenous (I2 ranging between 0% and 93%). Collectively, these results suggest that hypohydration may not compromise cognitive function, nor any of the investigated subdomains to a greater extent than if euhydration had been maintained. Furthermore, recommendations to avoid moderate hypohydration on the basis of maintaining optimal cognitive function are not substantiated by this meta-analysis.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Goodman SPJ,Moreland AT,Marino FEdoi
10.1016/j.physbeh.2019.03.008subject
Has Abstractpub_date
2019-05-15 00:00:00pages
297-308eissn
0031-9384issn
1873-507Xpii
S0031-9384(18)30861-8journal_volume
204pub_type
杂志文章,meta分析abstract：:The present study tested the hypothesis that exposure to morphine on prenatal days 11-18 impairs performance on tasks requiring learning and memory in adult male and female rats. In Experiment 1, a symmetrical maze was used to measure learning. In Experiment 2, an eight-arm radial maze was used to assess working spati...
journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
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pub_type： 杂志文章
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更新日期：2007-08-15 00:00:00
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pub_type： 杂志文章
doi：10.1016/s0031-9384(97)00197-2
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：2007-01-30 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2014.03.008
更新日期：2014-05-10 00:00:00
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更新日期：2013-04-10 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(92)90164-w
更新日期：1992-03-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,评审
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更新日期：2008-08-06 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.physbeh.2018.06.024
更新日期：2018-10-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 临床试验,杂志文章
doi：10.1016/s0031-9384(96)00241-7
更新日期：1996-11-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(77)90288-8
更新日期：1977-09-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,评审
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更新日期：2002-12-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(90)90028-3
更新日期：1990-05-01 00:00:00
abstract：:Previous studies have found that adolescent social isolation of rats can lead to an increased anxiety state during adulthood, while chronic anxiety states are associated with dysregulated local GABAergic inhibition within the basolateral amygdala (BL). Therefore, we investigated the effects of post-weaning social isol...
journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：2012-12-05 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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abstract：:The effect of oil enriched diets on sexual and exploratory behavior has been studied in male rats undernourished in utero and during lactation. At 20 days of age, for a period of 4 months, these animals were fed with 3 different diets: standard diet, standard diet enriched with 7% soybean oil, and standard diet enrich...
journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1997-07-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1995-06-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1991-03-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1989-01-01 00:00:00
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更新日期：2020-06-01 00:00:00
abstract：:Alterations in sleep induced by chronic exposure to mild changes in ambient temperature (Ta) were studied in male Wistar rats with chronically implanted electrodes for recording electrooculogram (EOG), electroencephalogram (EEG) and electromyogram (EMG), and a thermocouple to record the brain temperature (Tbr). Change...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2004.12.003
更新日期：2005-02-15 00:00:00
abstract：:Social affiliation-avoidance behaviors are essential indices of sociality. We examined changes in social affiliation-avoidance behaviors in an open-field apparatus while simultaneously measuring wheel-running activity. Recent studies suggest that mice increase wheel-running activity in stressful situations; thus, we h...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2007.07.006
更新日期：2008-01-28 00:00:00
