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Francesco Campa, Catarina N. Matias, Elisabetta Marini, Steven B. Heymsfield, Stefania Toselli, Luís B. Sardinha and Analiza M. Silva

athletes were tested to ensure a well-hydrated state using the urine specific gravity test (refractometer Urisys 1100; Roche Diagnostics, Lisbon, Portugal), from a fasting baseline urine sample, according to Armstrong et al 23 ; a urine specific gravity value <1.022 in the first urine was used to

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Devin G. McCarthy, Kate A. Wickham, Tyler F. Vermeulen, Danielle L. Nyman, Shane Ferth, Jamie M. Pereira, Dennis J. Larson, Jamie F. Burr and Lawrence L. Spriet

60 minutes before the skate, provided a urine sample, and emptied their bladder. Participants were then weighed wearing only shorts, the HR equipment was applied, and T c was recorded. While dressing, the goaltenders consumed 250 mL of WAT prior to the skate. Measurements Urine specific gravity was

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Samuel T. Tebeck, Jonathan D. Buckley, Clint R. Bellenger and Jamie Stanley

of assessment, participants collected a midstream urine sample upon wakening and advised to consume 1 L of water during the 2 hours prior to arrival at the laboratory. A digital refractometer (Atago, Tokyo, Japan) was used for urine specific gravity analysis with participants considered hydrated if

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Matthew Zimmermann, Grant Landers, Karen Wallman and Georgina Kent

, participants ingested a radiotelemetry pill (CorTemp, HQ Inc, Palmetto, FL) to enable measurement of core temperature. 19 On arrival at the lab participants gave a urine sample to determine urine specific gravity. Nude body mass was then measured and recorded. A heart-rate monitor (Polar RS400, Finland) was

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John Molphy, John W. Dickinson, Neil J. Chester, Mike Loosemore and Gregory Whyte

–3000 ng·mL −1 ), which were extracted and analyzed in the same batch. Quality control samples were tested along with samples to confirm assay performance. Sample Correction All urine concentrations of terbutaline were corrected to a urine specific gravity of 1.02 prior to analysis using the following

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J. Luke Pryor, Brittany Christensen, Catherine G. R. Jackson and Stephanie Moore-Reed

before testing. Participants fasted for 4 hours prior to testing, They drank 500 mL (2 cups) of water 3 hours before and 250 mL (1 cup) of water 1 hour before the testing session to ensure euhydration. Hydration was evaluated via urine refractometry and color. If urine-specific gravity was >1.025, the

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Erin L. McCleave, Katie M. Slattery, Rob Duffield, Philo U. Saunders, Avish P. Sharma, Stephen Crowcroft and Aaron J. Coutts

gravity (Atago Co, Ltd, Tokyo, Japan) and osmolality (Model 3250 Osmometer; Advanced Instruments Inc, Norwood, MA). A pretest urine osmolality below 700 osmol·kg −1 and urine specific gravity below 1.020 was considered as an euhydrated state. 18 Participants drank water ad libitum until test

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Michael J. Zurawlew, Jessica A. Mee and Neil P. Walsh

for urine specific gravity using a handheld refractometer (Atago Uricon-Ne refractometer; NSG Precision Cells, New York, NY) to confirm euhydration (urine specific gravity < 1.030). 20 A rectal thermistor was fitted and T re was recorded continuously between 0900 and 1540 hours. A preexercise nude

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Carolina F. Wilke, Felipe Augusto P. Fernandes, Flávio Vinícius C. Martins, Anísio M. Lacerda, Fabio Y. Nakamura, Samuel P. Wanner and Rob Duffield

(1) hydration status by urine specific gravity using a portable refractometer (Uridens Inlab, São Paulo, Brazil). This was followed by (2) creatine kinase (CK) concentration from capillary blood samples collected from the fingertip (Reflotron; Roche, Basileia, Switzerland; with intraassay coefficient

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Ida A. Heikura, Marc Quod, Nicki Strobel, Roger Palfreeman, Rita Civil and Louise M. Burke

day 1 until day 9. Venous blood samples were collected on the morning of days 2 (baseline) and 10 (post) and skinfold thickness was measured on days 1 (baseline) and 10 (post). Morning BM and urine specific gravity (USG; data not shown) were measured daily. The study design was approved by the ethics