| Title: |
Reliability of a Cryoscopic Micro-Osmometer Using 15-µL Plasma Samples to Measure Hydration Status in Varied Environmental Conditions |
| Language: |
English |
| Authors: |
Scanlan, Aaron T.; Richter-Stretton, Gina L.; Madueno, Maria C.; Borges, Nattai R.; Fenning, Andrew S. |
| Source: |
Measurement in Physical Education and Exercise Science. 2017 21(1):34-39. |
| Availability: |
Routledge. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals |
| Peer Reviewed: |
Y |
| Page Count: |
6 |
| Publication Date: |
2017 |
| Document Type: |
Journal Articles; Reports - Research |
| Descriptors: |
Reliability; Measurement Equipment; Young Adults; Physical Activities; Physical Environment; Water; Statistical Analysis |
| DOI: |
10.1080/1091367X.2016.1248767 |
| ISSN: |
1091-367X |
| Abstract: |
Measurement of plasma osmolality (P[subscript osm]) remains popular for assessing hydration status in exercise science. However, a controlled reliability assessment of micro-osmometry using small sample volumes to measure Posm 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[subscript 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 = 0.62-0.83 mOsmol·kg[superscript -1]; coefficient of variation = 0.9% to 1.3%) and relative (intraclass correlation coefficient = 0.60-0.85) 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. |
| Abstractor: |
As Provided |
| Number of References: |
35 |
| Entry Date: |
2017 |
| Accession Number: |
EJ1127304 |
| Database: |
ERIC |