Sökning: L773:1543 2742 OR L773:1526 484X > An aggregate urine ...
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000 | 02538naa a2200253 4500 | |
001 | oai:prod.swepub.kib.ki.se:127281816 | |
003 | SwePub | |
008 | 240701s2013 | |||||||||||000 ||eng| | |
024 | 7 | a http://kipublications.ki.se/Default.aspx?queryparsed=id:1272818162 URI |
024 | 7 | a https://doi.org/10.1123/ijsnem.23.4.3032 DOI |
040 | a (SwePub)ki | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Hahn, RGu Karolinska Institutet4 aut |
245 | 1 0 | a An aggregate urine analysis tool to detect acute dehydration |
264 | 1 | b Human Kinetics,c 2013 |
520 | a Urine sampling has previously been evaluated for detecting dehydration in young male athletes. The present study investigated whether urine analysis can serve as a measure of dehydration in men and women of a wide age span.Methods:Urine sampling and body weight measurement were undertaken before and after recreational physical exercise (median time: 90 min) in 57 volunteers age 17–69 years (mean age: 42). Urine analysis included urine color, osmolality, specific gravity, and creatinine.Results:The volunteers’ body weight decreased 1.1% (mean) while they exercised. There were strong correlations between all 4 urinary markers of dehydration (r = .73–.84, p < .001). Researchers constructed a composite dehydration index graded from 1 to 6 based on these markers. This index changed from 2.70 before exercising to 3.55 after exercising, which corresponded to dehydration of 1.0% as given by a preliminary reference curve based on 7 previous studies in athletes. Men were slightly dehydrated at baseline (mean: 1.9%) compared with women (mean: 0.7%; p < .001), though age had no influence on the results. A final reference curve that considered both the present results and the 7 previous studies was constructed in which exercise-induced weight loss (x) was predicted by the exponential equation x = 0.20 dehydration index1.86.Conclusion:Urine sampling can be used to estimate weight loss due to dehydration in adults up to age 70. A robust dehydration index based on four indicators reduces the influence of confounders. | |
700 | 1 | a Waldreus, N4 aut |
710 | 2 | a Karolinska Institutet4 org |
773 | 0 | t International journal of sport nutrition and exercise metabolismd : Human Kineticsg 23:4, s. 303-311q 23:4<303-311x 1543-2742x 1526-484X |
856 | 4 8 | u http://kipublications.ki.se/Default.aspx?queryparsed=id:127281816 |
856 | 4 8 | u https://doi.org/10.1123/ijsnem.23.4.303 |
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