Document Detail

Mild Dehydration Affects Mood in Healthy Young Women.
MedLine Citation:
PMID:  22190027     Owner:  NLM     Status:  Publisher    
Limited information is available regarding the effects of mild dehydration on cognitive function. Therefore, mild dehydration was produced by intermittent moderate exercise without hyperthermia and its effects on cognitive function of women were investigated. Twenty-five females (age 23.0 ± 0.6 y) participated in three 8-h, placebo-controlled experiments involving a different hydration state each day: exercise-induced dehydration with no diuretic (DN), exercise-induced dehydration plus diuretic (DD; furosemide, 40 mg), and euhydration (EU). Cognitive performance, mood, and symptoms of dehydration were assessed during each experiment, 3 times at rest and during each of 3 exercise sessions. The DN and DD trials in which a volunteer attained a ≥1% level of dehydration were pooled and compared to that volunteer's equivalent EU trials. Mean dehydration achieved during these DN and DD trials was -1.36 ± 0.16% of body mass. Significant adverse effects of dehydration were present at rest and during exercise for vigor-activity, fatigue-inertia, and total mood disturbance scores of the Profile of Mood States and for task difficulty, concentration, and headache as assessed by questionnaire. Most aspects of cognitive performance were not affected by dehydration. Serum osmolality, a marker of hydration, was greater in the mean of the dehydrated trials in which a ≥1% level of dehydration was achieved (P = 0.006) compared to EU. In conclusion, degraded mood, increased perception of task difficulty, lower concentration, and headache symptoms resulted from 1.36% dehydration in females. Increased emphasis on optimal hydration is warranted, especially during and after moderate exercise.
Lawrence E Armstrong; Matthew S Ganio; Douglas J Casa; Elaine C Lee; Brendon P McDermott; Jennifer F Klau; Liliana Jimenez; Laurent Le Bellego; Emmanuel Chevillotte; Harris R Lieberman
Related Documents :
7635137 - Physical workload of lorry drivers: a comparison of four methods of transport.
12762827 - Heart rate monitoring: applications and limitations.
22240367 - "studying the cutaneous microcirculatory response during upper-limb exercise in healthy...
10685587 - Heart rate and blood pressure responses to +gz following varied-duration -gz.
1810397 - Prevention of stroke--a report from collaboration project between zagreb and barcelona.
17392577 - Exhaled nitric oxide is decreased by exposure to the hyperbaric oxygen therapy environm...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-21
Journal Detail:
Title:  The Journal of nutrition     Volume:  -     ISSN:  1541-6100     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
University of Connecticut, Human Performance Laboratory, Storrs, CT.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Dietary patterns are associated with disease risk among participants in the Women's Health Initiativ...
Next Document:  Moderate to Severe, but Not Mild, Maternal Anemia, Is Associated with Increased Risk of Small-for-Ge...