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Cited by 235Cardiovascular and exercise physiologyMuscle metabolism and nutritionExercise and Physiological Responses

Muscle Glycogen and Muscle Electrolytes during Prolonged Physical Exercise1

Ahlborg, Björn, Bergström, Jonas, Ekelund, Lars‐Göran, Hultman, Eric·1967·Acta Physiologica Scandinavica
DOI 10.1111/j.1748-1716.1967.tb03608.x
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Abstract

Nine volunteers have been examined during prolonged physical exercise to exhaustion at a load of about 60 per cent of W 170. Ordinary circulatory parameters were measured as well as the quantities of glycogen, water and electrolytes in muscle tissue obtained by needle biopsy. In a separate study 6 subjects were examined for respiratory quotient under similar exercising conditions. The muscle glycogen fell considerably from a mean of 6.9 per 100g glycogen and fat‐free solids to a mean of 1.7 g at the end of exercise. The quantity of muscle glycogen used was correlated both to total energy developed during exercise and also to duration of exercise. The electrolyte and water content in muscle tissue showed only small changes. Some increase was found in muscle sodium and chloride, and also in the chloride space. The potassium content fell significantly by about 4 per cent of the basal value. None of the circulatory parameters measured showed changes of such magnitude as to have a limiting effect on performance. Two subjects were examined also with glucose infusion during the exercise. The reduction of glycogen, as also the performance of these two subjects, was of the same order of magnitude with and without infusion of glucose. The results suggest that the capacity for prolonged work is directly correlated to the glycogen store in the working muscles.

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Crossref · 10.1111/j.1748-1716.1967.tb03608.x

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  • Endurance exercise performance and time to exhaustion have historically been linked to initial levels of glycogen storage within the skeletal muscle.

    “Endurance exercise performance and time to exhaustion have historically been linked to initial levels of glycogen storage within the skeletal muscle (Ahlborg et al. 1967; Bergstrom et al. 1967).”

    From Males and females exhibit similar muscle glycogen recovery with varied recovery food sources (2020) · cites this paper as Ahlborg et al. 1967

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Authors
Ahlborg, B., Bergström, J., Ekelund, L., & Hultman, E.
Affiliations
Karolinska University Hospital (SE)
ORCID
Bergström, Jonas
Venue
Acta Physiologica Scandinavica
Publisher
Wiley
Published
1967-06
Volume
70
Issue
2
Pages
129-142
ISSN
  • 0001-6772 (ISSN-L)
  • 1365-201X
DOI
10.1111/j.1748-1716.1967.tb03608.x
OpenAlex
W2069176010
Cited by
235
References
28
Citations by year
2026: 2 · 2025: 1 · 2024: 4 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 3 · 2019: 2 · 2018: 10 · 2017: 5 · 2016: 3 · 2015: 3 · 2014: 4 · 2013: 1 · 2012: 5
FWCI
8.52
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor, 15166 d)
Locations
Acta Physiologica Scandinavica (publishedVersion)
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
muscle glycogen, muscle electrolytes, prolonged exercise, exhaustive exercise, muscle water content, muscle sodium, muscle potassium, respiratory quotient, energy expenditure, glucose infusion, endurance capacity, cardiovascular parameters

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