CoChat
Sign Up
Cited by 51Thermoregulation and physiological responsesCardiovascular and exercise physiologyExercise and Physiological Responses

Muscle glycogen depletion during exercise at 9? C and 21? C

Jacobs, Ira, Romet, Tiit T., Kerrigan-Brown, Debbie·1985·European Journal of Applied Physiology and Occupational Physiology
DOI 10.1007/bf00426295
Open this paper in CoChat — free account

Abstract

This study compared glycogen depletion in active skeletal muscle after light and moderate exercise in both cold and comfortable ambient conditions. Twelve male subjects (Ss) were divided into two groups equally matched for the submaximal exercise intensity corresponding to a blood lactate concentration of 4 mM (W4) during cycle exercise. On two separate days Ss rested for 30 min at ambient temperatures of either 9 degrees C or 21 degrees C, with the order of temperature exposure being counter-balanced among Ss. Following rest a tissue specimen was obtained from the m. vastus lateralis with the needle biopsy technique. Six Ss then exercised on a cycle ergometer for 30 min at 30% W4 (range = 50 - 65 W) while the remaining group exercised at 60% W4 (range = 85 - 120 W). Another biopsy was taken immediately after exercise and both samples were assayed for glycogen content. Identical procedures were repeated for the second environmental exposure. No significant glycogen depletion was observed in the Ss exercising at 30% W4 in 21 degrees C, but a 23% decrease (p = 0.04) was observed when the same exercise was performed at 9 degrees C. A 22% decrease (p = 0.002) in glycogen occurred in the 60% W4 group at 21 degrees C, which was not significantly different from that observed during the same exercise at 9 degrees C. The results suggest that muscle substrate utilization is increased during light exercise in a cold environment as compared to similar exercise at a comfortable temperature, probably due to shivering thermogenesis.(ABSTRACT TRUNCATED AT 250 WORDS)

Integrity signals

Registry

Crossref · 10.1007/bf00426295

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?

  • Other factors may impact the degradation of muscle glycogen, such as dehydration and hyperthermia.

    “Other factors may impact the degradation of muscle glycogen, such as dehydration and hyperthermia [36,95,96,97].”

    From Regulation of Energy Substrate Metabolism in Endurance Exercise (2021) · cites this paper as [97]

Cites

Flagged first, then by citations

1 of the 23 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Related

Authors
Jacobs, I., Romet, T. T., & Kerrigan-Brown, D.
ORCID
Jacobs, Ira
Venue
European Journal of Applied Physiology and Occupational Physiology
Publisher
Springer Science and Business Media LLC
Published
1985-05
Volume
54
Issue
1
Pages
35-39
ISSN
  • 0020-9376 (ISSN-L)
  • 0301-5548
  • 1439-6327
DOI
10.1007/bf00426295
OpenAlex
W2408983378
Cited by
51
References
23
Citations by year
2024: 3 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 1 · 2015: 1 · 2014: 1
FWCI
0.78
Type
journal article
Language
en
Open access
closed
Licence
www.springer.com/tdm (tdm)
Locations
  • European Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
muscle glycogen depletion, cold environment, ambient temperature, submaximal exercise, low-intensity exercise, moderate-intensity exercise, vastus lateralis, shivering thermogenesis, blood lactate, exercise intensity
MeSH terms
Adult, Blood Glucose, Body Height, Body Temperature, Body Weight, Cold Temperature, Physical Exertion, Glycogen, Heart Rate, Humans, Lactates, Male, Muscles, Oxygen Consumption, Pulmonary Gas Exchange, Rectum, Self Concept

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