PMID- 7987361
OWN - NLM
STAT- MEDLINE
DCOM- 19950112
LR  - 20220408
IS  - 1050-1606 (Print)
IS  - 1050-1606 (Linking)
VI  - 4
IP  - 3
DP  - 1994 Sep
TI  - Urinary indices of hydration status.
PG  - 265-79
AB  - Athletes and researchers could benefit from a simple and universally accepted 
      technique to determine whether humans are well-hydrated, euhydrated, or 
      hypohydrated. Two laboratory studies (A, B) and one field study (C) were 
      conducted to determine if urine color (Ucol) indicates hydration status 
      accurately and to clarify the interchangeability of Ucol, urine osmolality 
      (Uosm), and urine specific gravity (Usg) in research. Ucol, Uosm, and Usg were 
      not significantly correlated with plasma osmolality, plasma sodium, or 
      hematocrit. This suggested that these hematologic measurements are not as 
      sensitive to mild hypohydration (between days) as the selected urinary indices 
      are. When the data from A, B, and C were combined, Ucol was strongly correlated 
      with Usg and Uosm. It was concluded that (a) Ucol may be used in 
      athletic/industrial settings or field studies, where close estimates of Usg or 
      Uosm are acceptable, but should not be utilized in laboratories where greater 
      precision and accuracy are required, and (b) Uosm and Usg may be used 
      interchangeably to determine hydration status.
FAU - Armstrong, L E
AU  - Armstrong LE
AD  - University of Connecticut Human Performance Laboratory, Storrs 06269-1110.
FAU - Maresh, C M
AU  - Maresh CM
FAU - Castellani, J W
AU  - Castellani JW
FAU - Bergeron, M F
AU  - Bergeron MF
FAU - Kenefick, R W
AU  - Kenefick RW
FAU - LaGasse, K E
AU  - LaGasse KE
FAU - Riebe, D
AU  - Riebe D
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Int J Sport Nutr
JT  - International journal of sport nutrition
JID - 9307702
RN  - 9NEZ333N27 (Sodium)
SB  - IM
MH  - Adult
MH  - Blood Physiological Phenomena
MH  - Body Composition
MH  - Body Mass Index
MH  - Body Water/chemistry/*physiology
MH  - Color
MH  - Dehydration/blood/urine
MH  - Drinking
MH  - Exercise Test
MH  - Female
MH  - Hematocrit
MH  - Humans
MH  - Male
MH  - Osmolar Concentration
MH  - Physical Exertion/physiology
MH  - Reproducibility of Results
MH  - Sodium/blood
MH  - Specific Gravity
MH  - Sweating/physiology
MH  - Tennis/physiology
MH  - Urine/chemistry/*physiology
MH  - Weight Loss/physiology
EDAT- 1994/09/01 00:00
MHDA- 1994/09/01 00:01
CRDT- 1994/09/01 00:00
PHST- 1994/09/01 00:00 [pubmed]
PHST- 1994/09/01 00:01 [medline]
PHST- 1994/09/01 00:00 [entrez]
AID - 10.1123/ijsn.4.3.265 [doi]
PST - ppublish
SO  - Int J Sport Nutr. 1994 Sep;4(3):265-79. doi: 10.1123/ijsn.4.3.265.