Validity of Urine Specific Gravity When Compared With Plasma Osmolality as a Measure of Hydration Status in Male and Female NCAA Collegiate Athletes
| Autor: | Jennifer J. Zwetsloot, Juliane O. Young, Jonathan D. Mehlhorn, Jeffrey M. McBride, Alan C. Utter, Steven R. McAnulty, Mason C. Calhoun, Traci L. Haines, Lesley Sommerfield, Melanie D. Austin |
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| Rok vydání: | 2016 |
| Předmět: |
Male
0301 basic medicine medicine.medical_specialty Medical diagnostic Adolescent Universities Physical Therapy Sports Therapy and Rehabilitation Urine Sensitivity and Specificity Article Plasma Young Adult 03 medical and health sciences 0302 clinical medicine Animal science Soccer Humans Medicine Orthopedics and Sports Medicine Wrestling Specific Gravity Hydration status 030109 nutrition & dietetics Dehydration biology business.industry Athletes Urine specific gravity Osmolar Concentration 030229 sport sciences General Medicine biology.organism_classification Surgery Plasma osmolality Plasma chemistry Urine osmolality Fluid Therapy Female business |
| Zdroj: | Journal of Strength and Conditioning Research. 30:2219-2225 |
| ISSN: | 1064-8011 |
| DOI: | 10.1519/jsc.0000000000001313 |
| Popis: | Sommerfield, LM, McAnulty, SR, McBride, JM, Zwetsloot, JJ, Austin, MD, Mehlhorn, JD, Calhoun, MC, Young, JO, Haines, TL, and Utter, AC. Validity of urine specific gravity when compared with plasma osmolality as a measure of hydration status in male and female NCAA collegiate athletes. J Strength Cond Res 30(8): 2219-2225, 2016-The purpose of this study was to evaluate the response of urine specific gravity (Usg) and urine osmolality (Uosm) when compared with plasma osmolality (Posm) from euhydration to 3% dehydration and then a 2-hour rehydration period in male and female collegiate athletes. Fifty-six National Collegiate Athletic Association (NCAA) wrestlers (mean ± SEM); height 1.75 ± 0.01 m, age 19.3 ± 0.2 years, and body mass (BM) 78.1 ± 1.8 kg and 26 NCAA women's soccer athletes; height 1.64 ± 0.01 m, age 19.8 ± 0.3 years, and BM 62.2 ± 1.2 kg were evaluated. Hydration status was obtained by measuring changes in Posm, Uosm, Usg, and BM. Male and female subjects dehydrated to achieve an average BM loss of 2.9 ± 0.09% and 1.9 ± 0.03%, respectively. Using the medical diagnostic decision model, the sensitivity of Usg was high in both the hydrated and dehydrated state for males (92%) and females (80%). However, the specificity of Usg was low in both the hydrated and dehydrated states for males (10 and 6%, respectively) and females (29 and 40%, respectively). No significant correlations were found between Usg and Posm during either the hydrated or dehydrated state for males or females. Based on these results, the use of Usg as a field measure of hydration status in male and female collegiate athletes should be used with caution. Considering that athletes deal with hydration status on a regular basis, the reported low specificity of Usg suggests that athletes could be incorrectly classified leading to the unnecessary loss of competition. |
| Databáze: | OpenAIRE |
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