Cited by 70Stress Responses and CortisolAdrenal Hormones and DisordersAnimal Behavior and Welfare Studies

Sweat-inducing physiological challenges do not result in acute changes in hair cortisol concentrations

Grass, Juliane, Kirschbaum, Clemens, Miller, Robert, Gao, Wei, Steudte-Schmiedgen, Susann, Stalder, Tobias·2015·Psychoneuroendocrinology

Abstract

Hair cortisol concentrations (HCC) are assumed to provide a stable, integrative marker of long-term systemic cortisol secretion. However, contrary to this assumption, some recent observations have raised the possibility that HCC may be subject to acute influences, potentially related to cortisol incorporation from sweat. Here, we provide a first detailed in vivo investigation of this possibility comprising two independent experimental studies: study I (N=42) used a treadmill challenge to induce sweating together with systemic cortisol reactivity while in study II (N=52) a sauna bathing challenge induced sweating without systemic cortisol changes. In both studies, repeated assessments of HCC, salivary cortisol, cortisol in sweat and individuals' sweating rate (single assessment) were conducted on the experimental day and at a next-day follow-up. Results across the two studies consistently revealed that HCC were not altered by the acute interventions. Further, HCC were found to be unrelated to acute salivary cortisol reactivity, sweat cortisol levels, sweating rate or the time of examination. In line with previous data, cortisol levels in sweat were strongly related to total salivary cortisol output across the examined periods. The present results oppose recent case report data by showing that single sweat-inducing interventions do not result in acute changes in HCC. Our data also tentatively speak against the notion that cortisol in sweat may be a dominant source of HCC. Further, our findings also indicate that HCC are not subject to diurnal variation. This research provides further support for hair cortisol analysis as a marker of integrated long-term systemic cortisol secretion.

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Crossref · 10.1016/j.psyneuen.2014.12.023

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  • Large-scale observational evidence and experimental work do not support the idea that higher hair cortisol levels from July to October reflected the impact of summer season or sunlight exposure.

    “In sum, large-scale observational evidence and experimental work do not support the idea that higher hair cortisol levels from July to October reflected the impact of summer season or sunlight exposure.”

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Authors
Grass, J., Kirschbaum, C., Miller, R., Gao, W., Steudte-Schmiedgen, S., & Stalder, T.
Affiliations
Technische Universität Dresden (DE)
Venue
Psychoneuroendocrinology
Publisher
Elsevier BV
Published
2015-03
Volume
53
Pages
108-116
ISSN
0306-4530 (ISSN-L)
OpenAlex
W1968308487
Cited by
70
References
37
Citations by year
2026: 8 · 2025: 4 · 2024: 1 · 2023: 6 · 2022: 2 · 2021: 4 · 2020: 5 · 2019: 4 · 2018: 10 · 2017: 13 · 2016: 7 · 2015: 6
FWCI
6.25
Type
journal article
Language
en
Open access
closed
Locations
  • Psychoneuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Veterinary › Small Animals › Animal Behavior and Welfare Studies
Keywords
hair cortisol, salivary cortisol, sweating, treadmill exercise, sauna bathing, diurnal variation, biomarker validity
MeSH terms
Adolescent, Adult, Circadian Rhythm, Female, Hair, Humans, Hydrocortisone, Male, Saliva, Stress, Physiological, Sweat, Sweating, Steam Bath, Young Adult

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