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hydration status of players used by professional ice hockey athletic trainers? a. urine color b. urine-specific gravity c. weigh-ins/outs pre-/postgame d. weigh-ins/outs pre-/postpractice 18. Drinking ad libitum or to thirst may be sufficient to maintain hydration during shorter, intense activity where

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Kelsey Dow, Robert Pritchett, Karen Roemer and Kelly Pritchett

familiarization, anthropometric measurements (weight, height, and reach height) were taken and urine samples collected and analyzed to determine a baseline hydration status. Participants were weighed wearing minimal clothing (sports bra and spandex shorts). Urine specific gravity was determined through use of a

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Alexander S.D. Gamble, Jessica L. Bigg, Tyler F. Vermeulen, Stephanie M. Boville, Greg S. Eskedjian, Sebastian Jannas-Vela, Jamie Whitfield, Matthew S. Palmer and Lawrence L. Spriet

measure the sweat [Na + ]. After practice, players undressed quickly, dried off, and were weighed in dry shorts to determine their postpractice BM. Measurements Prepractice hydration status (urine specific gravity [USG]) was measured in the urine samples using a digital handheld “pen” refractometer (ATAGO

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Oliver R. Barley, Dale W. Chapman, Georgios Mavropalias and Chris R. Abbiss

; MPW Med. Instruments), whereas urine samples were collected and assessed for osmolality (Advanced 3250 single-sample osmometer; Advanced Instruments, Norwood, Canada) and urine specific gravity (Atago hand refractometer, model UNC-NE; Atago, Minato, Japan) (Figure  1A ). Venous blood samples were

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Cody R. Smith, Cory L. Butts, J.D. Adams, Matthew A. Tucker, Nicole E. Moyen, Matthew S. Ganio and Brendon P. McDermott

euhydration before body mass was assessed (349KLX Digital Medical Scale; Health-O-Meter, McCook, IL). Urine specific gravity greater than 1.025 was considered hypohydrated, and participants were provided fluid until urine specific gravity was <1.025. Participants brought their own fluids for hydration during

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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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Mauricio Castro-Sepulveda, Jorge Cancino, Rodrigo Fernández-Verdejo, Cristian Pérez-Luco, Sebastian Jannas-Vela, Rodrigo Ramirez-Campillo, Juan Del Coso and Hermann Zbinden-Foncea

1.5%. The VO 2 max criteria were (a) plateau in VO 2 despite increase in workload, (b) respiratory exchange ratio ≥1.10, and (c) maximal heart rate expected for age (220 beats per min − age). The tests ended when two of those three criteria were met. Urine Specific Gravity Before the training

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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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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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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