CoChat
Sign Up
Cited by 769Thermoregulation and physiological responsesCardiovascular and exercise physiologySports Performance and Training

The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.

Influence of graded dehydration on hyperthermia and cardiovascular drift during exercise

Montain, S. J., Coyle, E. F.·1992·Journal of Applied Physiology
DOI 10.1152/jappl.1992.73.4.1340
Open this paper in CoChat — free account

Abstract

This investigation determined the effect of different rates of dehydration, induced by ingesting different volumes of fluid during prolonged exercise, on hyperthermia, heart rate (HR), and stroke volume (SV). On four different occasions, eight endurance-trained cyclists [age 23 +/- 3 (SD) yr, body wt 71.9 +/- 11.6 kg, maximal O2 consumption 4.72 +/- 0.33 l/min] cycled at a power output equal to 62-67% maximal O2 consumption for 2 h in a warm environment (33 degrees C dry bulb, 50% relative humidity, wind speed 2.5 m/s). During exercise, they randomly received no fluid (NF) or ingested a small (SF), moderate (MF), or large (LF) volume of fluid that replaced 20 +/- 1, 48 +/- 1, and 81 +/- 2%, respectively, of the fluid lost in sweat during exercise. The protocol resulted in graded magnitudes of dehydration as body weight declined 4.2 +/- 0.1, 3.4 +/- 0.1, 2.3 +/- 0.1, and 1.1 +/- 0.1%, respectively, during NF, SF, MF, and LF. After 2 h of exercise, esophageal temperature (Tes), HR, and SV were significantly different among the four trials (P < 0.05), with the exception of NF and SF. The magnitude of dehydration accrued after 2 h of exercise in the four trials was linearly related with the increase in Tes (r = 0.98, P < 0.02), the increase in HR (r = 0.99, P < 0.01), and the decline in SV (r = 0.99, P < 0.01). LF attenuated hyperthermia, apparently because of higher skin blood flow, inasmuch as forearm blood flow was 20-22% higher than during SF and NF at 105 min (P < 0.05). There were no differences in sweat rate among the four trials. In each subject, the increase in Tes from 20 to 120 min of exercise was highly correlated to the increase in serum osmolality (r = 0.81-0.98, P < 0.02-0.19) and the increase in serum sodium concentration (r = 0.87-0.99, P < 0.01-0.13) from 5 to 120 min of exercise. In summary, the magnitude of increase in core temperature and HR and the decline in SV are graded in proportion to the amount of dehydration accrued during exercise.

Overview

Integrity signals

Registry

Crossref · 10.1152/jappl.1992.73.4.1340

Cites

16 of 16 references verified0 citation errors · 0 not checkable

Statistics

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

Verification

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?

Citations

Cites

Show all 16 references

Cited by

Sorted by citations

Items 501–600 of 763

Related

See all

Metadata

Authors
Montain, S. J., & Coyle, E. F.
Affiliations
The University of Texas at Austin (US)
ORCID
Coyle, E. F.
Venue
Journal of Applied Physiology
Publisher
American Physiological Society
Published
1992-10-01
Volume
73
Issue
4
Pages
1340-1350
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
DOI
10.1152/jappl.1992.73.4.1340
OpenAlex
W1910883221
Cited by
769
References
16
Citations by year
2026: 18 · 2025: 13 · 2024: 16 · 2023: 17 · 2022: 11 · 2021: 22 · 2020: 31 · 2019: 38 · 2018: 25 · 2017: 28 · 2016: 29 · 2015: 41 · 2014: 49 · 2013: 46 · 2012: 32
FWCI
3.03
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology (medical) › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Physiology (medical) › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
Keywords
exercise hyperthermia, cardiovascular drift, fluid intake, endurance cyclists, esophageal temperature, heart rate, stroke volume, skin blood flow, forearm blood flow, serum osmolality, serum sodium, sweat rate, heat stress, fluid replacement, endurance training, thermoregulation
MeSH terms
Adult, Blood Volume, Body Temperature Regulation, Cardiac Output, Dehydration, Drinking, Heart Rate, Hematocrit, Hemodynamics, Humans, Osmolar Concentration, Plethysmography, Potassium, Skin Temperature, Sodium, Sweating, 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