Cited by 150Cardiovascular and exercise physiologySports Performance and TrainingExercise and Physiological Responses

Balance and kinetics of anaerobic energy release during strenuous exercise in man

Margaria, R., Cerretelli, P., Mangili, F.·1964·Journal of Applied Physiology

Abstract

The speed of lactic acid formation in blood has been measured in man as a function of the intensity of exercise and was found to reach a maximum of about 36 mg lactic acid/liter blood per sec, corresponding to about 21.5 kcal (kg hr) or 0.034 hp/kg. The maximal energy release sustained by the alactacid mechanism is of the order of 45 kcal/(kg hr), or 0.07 hp/kg. The alactacid debt, as measured in man running on a treadmill, seems to be approximately proportional to the energy expenditure: it amounts at most to 0.1 kcal/kg or about 1.4 liters O 2 for a man weighing 70 kg. The lactacid debt amounts at most to 0.22 kcal/kg or about 3 liters O 2 for man, on the average. The alactacid oxygen debt contraction is a faster process and it requires 10–30 sec for completion, while the lactacid debt process is completed in about 40 sec in the most strenous exercise. Therefore, at the highest workloads, the only energy source available after 40 sec resides in oxidative processes. oxygen debt; lactic acid Submitted on July 5, 1963

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Crossref · 10.1152/jappl.1964.19.4.623

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  • Anaerobic glycogen breakdown to lactate and aerobic carbohydrate metabolism allow muscles to generate ATP at rates 3-4 times faster than aerobic carbohydrate combustion and roughly seven times faster than fatty acid metabolism.

    “In addition, anaerobic glycogen breakdown to lactate and aerobic carbohydrate metabolism allows muscles to generate ATP at rates 3–4 times faster than aerobic carbohydrate combustion and roughly seven times faster than fatty acid metabolism [6, 7].”

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Authors
Margaria, R., Cerretelli, P., & Mangili, F.
Affiliations
University of Milan (IT)
Venue
Journal of Applied Physiology
Published
1964-07-01
Volume
19
Issue
4
Pages
623-628
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2227993785
Cited by
150
References
0
Citations by year
2026: 3 · 2025: 3 · 2024: 6 · 2023: 3 · 2022: 3 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 1 · 2015: 2 · 2014: 3 · 2013: 2 · 2012: 6
FWCI
3.24
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
lactic acid production, oxygen debt, exercise intensity, energy expenditure, oxidative metabolism, treadmill running
MeSH terms
Blood Chemical Analysis, Physical Exertion, Humans, Kinetics, Lactates, Metabolism, Muscles, Patient Discharge, Physics, Physiology, Exercise

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