https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33307 osm) remains popular for assessing hydration status in exercise science. However, a controlled reliability assessment of micro-osmometry using small sample volumes to measure P_osm remains to be performed. This study aimed to examine the reliability of a cryoscopic micro-osmometer requiring 15-μL samples across varied environmental conditions. Thirteen young adults (26.4 ± 5.7 years) completed a 20-min steady-state cycling protocol on separate occasions in cool/dry conditions and hot/humid conditions. P_osm was assessed using fingertip capillary samples taken in duplication prior to and following 20-min acclimatization and recovery periods around the cycling bout. Absolute (typical error of measurement = .62–.83 mOsmol·kg⁻¹; coefficient of variation = .9% to 1.3%) and relative (intraclass correlation coefficient = .60–.85) reliability of this approach were supported. These findings suggest micro-osmometry requiring small plasma samples (15 μL) can be reliably used by practitioners to assess longitudinal changes and cross-sectional hydration status in varied environmental conditions.]]> Tue 02 Jul 2019 11:16:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24871 Sat 24 Mar 2018 07:11:21 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32782 Mon 23 Sep 2019 14:01:33 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22691 Mon 11 Mar 2019 12:13:39 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33351 Fri 03 Dec 2021 10:31:58 AEDT ]]>