Cited by 105Stress Responses and CortisolSports Performance and TrainingCardiovascular and exercise physiology

Serum and Saliva Cortisol Responses and Blood Lactate Accumulation during Incremental Exercise Testing

Port, K.·1991·International Journal of Sports Medicine

Abstract

In six male physically active subjects the adrenocortical and metabolic changes in response to incremental exercise testing were investigated. Blood and saliva samples were taken at rest, at the end of every workload (duration 4 min with 50 W increment), immediately and 10 min after 1 min all out spurt on the electrically braked cycle ergometer. Both saliva and serum cortisol were measured as well as blood lactate. The cortisol response in serum and in saliva showed similar dynamics (r = 0.86, p less than 0.001, n = 50) at submaximal work. At maximal work the serum cortisol concentration showed a transitory decrease, which was not manifested in saliva. It is hypothesized that a factor related to the metabolic acidosis masks the actual adrenocortical response in the serum but not in saliva. Correlation analysis revealed a positive relation between lactate and cortisol in serum (r = 0.56, p less than 0.01, n = 50) and saliva (r = 0.70, p less than 0.01, n = 50). Apparently, salivary cortisol closely reflects plasma free cortisol level, presenting advantage over total cortisol measurements. Moreover salivary measurement will permit studies in their authentic settings and should assist attempts to understand the nature of the adrenocortical function in exercise.

Integrity signals

Registry

Crossref · 10.1055/s-2007-1024720

Cites

22 of 22 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Port, K.
Corresponding author
Port, K.
Venue
International Journal of Sports Medicine
Published
1991-10
Volume
12
Issue
05
Pages
490-494
ISSN
  • 0172-4622 (ISSN-L)
  • 1439-3964
OpenAlex
W2043879295
Cited by
105
References
22
Citations by year
2025: 1 · 2024: 2 · 2023: 4 · 2022: 4 · 2021: 2 · 2020: 2 · 2019: 7 · 2018: 1 · 2017: 4 · 2016: 3 · 2015: 1 · 2014: 7 · 2013: 5 · 2012: 5
FWCI
0.38
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Sports Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
salivary cortisol, serum cortisol, blood lactate, incremental exercise, adrenocortical response, metabolic acidosis, free cortisol, exercise metabolism, cycle ergometer
MeSH terms
Acidosis, Analysis of Variance, Exercise Test, Humans, Hydrocortisone, Lactates, Male, Pituitary-Adrenal System, Running, Saliva, Exercise

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review