The effect of high-intensity exercise on the respiratory capacity of skeletal muscle.
Abstract: The effect of high-intensity exercise on the respiratory capacity of skeletal muscle was studied in horses which ran five 600-m bouts on a track with 2 min of rest between exercise bouts, or once to fatigue on a treadmill at an intensity that elicited the maximal oxygen uptake. Venous blood and biopsy samples of the middle gluteal muscle were collected at rest, after each exercise bout, and 30 and 60 min post-exercise. Blood samples were analyzed for lactate concentration and pH and muscle samples for metabolites, pH, and respiratory capacity. Venous blood and muscle pH declined to 6.91 +/- 0.02 and 6.57 +/- 0.02, respectively, after the fifth track run and to 6.98 +/- 0.02 and 6.71 +/- 0.07, respectively, after treadmill running. Muscle metabolite changes were consistent with the metabolic response to high-intensity exercise. Muscle respiratory capacity declined greater than 20% (P less than 0.05) after a single exercise bout and was 45% of the control value after the fifth track run. Tissue respiration was depressed 60 min post-exercise but was normal 24 h later. These observations suggest that high-intensity exercise impairs the respiratory capacity of the working muscle. Although this occurred in parallel with reductions in pH, other factors could be responsible for this response.
Publication Date: 1990-01-01 PubMed ID: 2315003DOI: 10.1007/BF00373617Google Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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This research explores the impacts of high-intensity exercise on the respiratory capacity of skeletal muscle, highlighting how such exercise performs in horses can reduce this capacity significantly.
Background and Methodology
- The study was focused on examining the impact of high-intensity exercise on the respiratory capacity of skeletal muscles.
- Two kinds of exercises were investigated: five 600-m track bouts with 2-min rests between them and a single run to fatigue on a treadmill at a maximum oxygen uptake level.
- The subjects of this experiment were horses, and both venous blood and biopsy samples of the middle gluteal muscle were taken at different points before, during, and after the exercise.
Findings Observations
- After conducting the exercises and analyzing the collected samples, researchers found that venous blood and muscle pH significantly dropped.
- The five rounds of high-intensity track running led to more accentuated declines in pH levels in both venous blood and muscle compared to the treadmill run.
- Changes in muscle metabolite were also noticed, and those were in line with the expected metabolic response to high-intensity exercise.
- Notably, a single bout of exercise led to a greater than 20% decline in muscle respiratory capacity, with this figure rising to 45% after the fifth track run.
Interpretations and Implications
- These findings suggest that high-intensity exercise can impair the respiratory capacity of the muscles involved in the exercise, with the impact apparently proportional to the intensity of the exercise.
- Though these effects seemed to occur together with reductions in pH, the researchers acknowledged that other factors might contribute to the reduction in the respiratory capacity of skeletal muscles during high-intensity exercise.
- The capacity declined significantly immediately after the exercise (60 minutes later) but was back to normal 24 hours after exercise, suggesting that the effect is temporary and timebound.
Cite This Article
APA
Gollnick PD, Bertocci LA, Kelso TB, Witt EH, Hodgson DR.
(1990).
The effect of high-intensity exercise on the respiratory capacity of skeletal muscle.
Pflugers Arch, 415(4), 407-413.
https://doi.org/10.1007/BF00373617 Publication
Researcher Affiliations
- Department of Veterinary and Comparative Anatomy, Washington State University, Pullman 99164-6520.
MeSH Terms
- Animals
- Female
- Horses / physiology
- Male
- Mitochondria, Muscle / metabolism
- Muscles / metabolism
- Muscles / physiology
- Oxygen Consumption / physiology
- Physical Exertion / physiology
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Citations
This article has been cited 10 times.- Thomas C, Delfour-Peyrethon R, Lambert K, Granata C, Hobbs T, Hanon C, Bishop DJ. The effect of pre-exercise alkalosis on lactate/pH regulation and mitochondrial respiration following sprint-interval exercise in humans.. Front Physiol 2023;14:1073407.
- Lewis MT, Blain GM, Hart CR, Layec G, Rossman MJ, Park SY, Trinity JD, Gifford JR, Sidhu SK, Weavil JC, Hureau TJ, Jessop JE, Bledsoe AD, Amann M, Richardson RS. Acute high-intensity exercise and skeletal muscle mitochondrial respiratory function: role of metabolic perturbation.. Am J Physiol Regul Integr Comp Physiol 2021 Nov 1;321(5):R687-R698.
- Layec G, Blain GM, Rossman MJ, Park SY, Hart CR, Trinity JD, Gifford JR, Sidhu SK, Weavil JC, Hureau TJ, Amann M, Richardson RS. Acute High-Intensity Exercise Impairs Skeletal Muscle Respiratory Capacity.. Med Sci Sports Exerc 2018 Dec;50(12):2409-2417.
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