Search Results

You are looking at 41 - 50 of 73 items for :

  • "urine-specific gravity" x
Clear All
Restricted access

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

Restricted access

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

Restricted access

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

Restricted access

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

Restricted access

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

Restricted access

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

Restricted access

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

Restricted access

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

Restricted access

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

Restricted access

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