The between-day reliability of fasted circulating irisin concentrations: a cohort study
Irisin blood concentrations are investigated in many applied physiology studies, however between-day reliability is required for accurate interpretation, particularly in longitudinal interventions. Between-day reliability of irisin was calculated, and the influence of participant characteristics exp...
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| Format: | Article |
| Language: | English |
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Canadian Science Publishing
2025-01-01
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| Series: | FACETS |
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| Online Access: | https://facetsjournal.com/doi/10.1139/facets-2024-0040 |
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| author | James E. Newman Grace L. Rose Morgan J. Farley Nicole Flemming Tina L. Skinner David G. Jenkins Christopher D. Askew Mia A. Schaumberg |
| author_facet | James E. Newman Grace L. Rose Morgan J. Farley Nicole Flemming Tina L. Skinner David G. Jenkins Christopher D. Askew Mia A. Schaumberg |
| author_sort | James E. Newman |
| collection | DOAJ |
| description | Irisin blood concentrations are investigated in many applied physiology studies, however between-day reliability is required for accurate interpretation, particularly in longitudinal interventions. Between-day reliability of irisin was calculated, and the influence of participant characteristics explored. Venous blood was sampled 24 h apart in 32 rested and fasted healthy adults (males n = 15, 19–80 years). Plasma irisin concentrations were measured using MILLIPLEX® xMAP immunoassay analysis (Merck KGaA, Darmstadt, Germany). Irisin reliability was analysed using coefficient of variation (CV) and intraclass correlation coefficients (ICCs). Regression analysis was used to explore the influence of participant characteristics. Overall, irisin was reliable between days (CV 12.7%, ICC r = 0.963, p < 0.001), with no influence of participant characteristics, when pre-sampling controls (intake, activity) were applied. |
| format | Article |
| id | doaj-art-c009041c89b54c65bc3a63e16a214f93 |
| institution | OA Journals |
| issn | 2371-1671 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Canadian Science Publishing |
| record_format | Article |
| series | FACETS |
| spelling | doaj-art-c009041c89b54c65bc3a63e16a214f932025-08-20T02:06:43ZengCanadian Science PublishingFACETS2371-16712025-01-01101610.1139/facets-2024-0040The between-day reliability of fasted circulating irisin concentrations: a cohort studyJames E. Newman0Grace L. Rose1Morgan J. Farley2Nicole Flemming3Tina L. Skinner4David G. Jenkins5Christopher D. Askew6Mia A. Schaumberg7School of Health, University of the Sunshine Coast, Sippy Downs, AustraliaSchool of Health, University of the Sunshine Coast, Sippy Downs, AustraliaSchool of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, AustraliaSunshine Coast Health Institute, Sunshine Coast Hospital and Health Service, Birtinya, AustraliaSchool of Health, University of the Sunshine Coast, Sippy Downs, AustraliaSchool of Health, University of the Sunshine Coast, Sippy Downs, AustraliaSchool of Health, University of the Sunshine Coast, Sippy Downs, AustraliaSchool of Health, University of the Sunshine Coast, Sippy Downs, AustraliaIrisin blood concentrations are investigated in many applied physiology studies, however between-day reliability is required for accurate interpretation, particularly in longitudinal interventions. Between-day reliability of irisin was calculated, and the influence of participant characteristics explored. Venous blood was sampled 24 h apart in 32 rested and fasted healthy adults (males n = 15, 19–80 years). Plasma irisin concentrations were measured using MILLIPLEX® xMAP immunoassay analysis (Merck KGaA, Darmstadt, Germany). Irisin reliability was analysed using coefficient of variation (CV) and intraclass correlation coefficients (ICCs). Regression analysis was used to explore the influence of participant characteristics. Overall, irisin was reliable between days (CV 12.7%, ICC r = 0.963, p < 0.001), with no influence of participant characteristics, when pre-sampling controls (intake, activity) were applied.https://facetsjournal.com/doi/10.1139/facets-2024-0040irisinbetween-dayreliabilitysexagebody composition |
| spellingShingle | James E. Newman Grace L. Rose Morgan J. Farley Nicole Flemming Tina L. Skinner David G. Jenkins Christopher D. Askew Mia A. Schaumberg The between-day reliability of fasted circulating irisin concentrations: a cohort study FACETS irisin between-day reliability sex age body composition |
| title | The between-day reliability of fasted circulating irisin concentrations: a cohort study |
| title_full | The between-day reliability of fasted circulating irisin concentrations: a cohort study |
| title_fullStr | The between-day reliability of fasted circulating irisin concentrations: a cohort study |
| title_full_unstemmed | The between-day reliability of fasted circulating irisin concentrations: a cohort study |
| title_short | The between-day reliability of fasted circulating irisin concentrations: a cohort study |
| title_sort | between day reliability of fasted circulating irisin concentrations a cohort study |
| topic | irisin between-day reliability sex age body composition |
| url | https://facetsjournal.com/doi/10.1139/facets-2024-0040 |
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