699
Views
14
CrossRef citations to date
0
Altmetric
Original Articles

Validity of a portable urine refractometer: The effects of sample freezing

&
Pages 745-749 | Received 04 May 2012, Accepted 05 Nov 2012, Published online: 03 Dec 2012

References

  • American College of Sports Medicine , Sawka , M.N. , Burke , L.M. , Eichner , E.R. , Maughan , R.J. , Montain , S.J. and Stachenfeld , N.S. 2007 . American College of Sports Medicine position stand. Exercise and fluid replacement . Medicine and Science in Sports and Exercise , 39 : 377 – 390 .
  • Armstrong , L.E. 2007 . Assessing hydration status: The elusive gold standard . Journal of the American College of Nutrition , 26 : 575S – 584S .
  • Armstrong , L.E. , Maresh , C.M. , Castellani , J.W. , Bergeron , M.F. , Kenefick , R.W. LaGasse , K.E. 1994 . Urinary indices of hydration status . International Journal of Sport Nutrition , 4 : 265 – 279 .
  • Armstrong , L.E. , Pumerantz , A.C. , Fiala , K.A. , Roti , M.W. , Kavouras , S.A. Casa , D.J. 2010 . Human hydration indices: acute and longitudinal reference values . International Journal of Sports Nutrition and Exercise Metabolism , 20 : 145 – 153 .
  • Atkinson , G. and Nevill , A.M. 1998 . Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine . Sports Medicine , 26 : 217 – 22-38 .
  • Bland , J.M. and Altman , D.G. 1986 . Statistical methods for assessing agreement between two methods of clinical measurement . The Lancet , 327 ( 8476 ) : 307 – 310 .
  • Cheuvront , S.N. , Ely , B.R. , Kenefick , R.W. and Sawka , M.N. 2010 . Biological variation and diagnostic accuracy of dehydration assessment markers1–4 . American Journal of Clinical Nutrition , 92 : 565 – 573 .
  • Fortes , M.B. , Diment , B.C. , Di Felice , U. , Gunn , A.E. , Kendall , J.L. Esmaeelpour , M. 2011 . Tear fluid osmolarity as a potential marker of hydration status . Medicine and Science in Sports and Exercise , 43 : 1590 – 1597 .
  • Hopkins , W.G. 2000a . A new view of statistics Analysis of validity by linear regression (Excel spreadsheet) sportsci.org: Internet Society for Sport Science, sportsci.org/resource/stats/xvalid.xls
  • Hopkins , W.G. 2000b . Measures of reliability in sports medicine and science . Sports Medicine , 30 : 1 – 15 .
  • Markó , L. , Cseh , J. , Kószegi , T. , Molnár , G.A. , Mohás , M. Szigeti , N. 2009 . Storage at −80°C decreases the concentration of HPLC-detected urinary albumin: possible mechanisms and implications . Journal of Nephrology , 22 : 397 – 402 .
  • Nana , A. , Slater , G.J. , Hopkins , W.G. and Burke , L.M. 2012 . Effects of daily activities on dual-energy X-ray absorptiometry measurements of body composition in active people . Medicine and Science in Sports and Exercise , 44 ( 1 ) : 180 – 189 .
  • 2005 . Accuracy of urine specific gravity and osmolality as indicators of hydration status . International Journal of Sport Nutrition and Exercise Metabolism , 15 : 236 – 251 .
  • 2001 . Blood and urinary measures of hydration status during progressive acute dehydration . Medicine and Science in Sports and Exercise , 33 : 747–753
  • Saetun , P. , Semangoen , T. and Thongboonkerd , V. 2009 . Characterizations of urinary sediments precipitated after freezing and their effects on urinary protein and chemical analyses . American Journal of Physiology. Renal Physiology , 296 : F1346 – F1354 .
  • Saketos , M. , Sharma , N. , Adel , T. , Raghuwanshi , M. and Santoro , N. 1994 . Time-resolved immunofluorometric assay and specimen storage conditions for measuring urinary gonadatrophins . Clinical Chemistry , 40 : 749 – 753 .
  • Sawka , M.N. , Burke , L.M. , Eichner , E.R. , Maughan , R.J. , Montain , S.J. and Stachenfeld , N.S. 2007 . American College of Sports Medicine position stand. Exercise and fluid replacement . Medicine and Science in Sports and Exercise , 39 : 377 – 390 .
  • Shirreffs , S.M. and Maughan , R.J. 1998 . Urine osmolality and conductivity as indices of hydration status in athletes in the heat . Medicine and Science in Sports and Exercise , 30 : 1598 – 1602 .
  • Shirreffs , S.M. and Maughan , R.J. 2008 . Development of individual hydration strategies for athletes . International Journal of Sport Nutrition and Exercise Metabolism , 18 : 457 – 472 .

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.