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Printable Handouts
Navigable Slide Index
- Introduction
- After this lecture you should
- Energy
- Forms of energy for the human body
- Energy can exist in different forms
- Units of energy
- Breaking chemical bonds releases energy
- Energy metabolism and the role of adenosine triphosphate (ATP)
- Adenosine triphosphate (ATP)
- ATP structure
- Energy use in the human body
- Catabolism and anabolism
- The essential role of ATP for energy (1)
- The essential role of ATP for energy (2)
- Sources of energy for muscle contraction
- Energy stores in the body
- Energy stores in a 75 kg man with 13.3% body fat
- Energy sources for high intensity exercise like sprinting
- Energy sources during exercise
- Phosphocreatine in anaerobic metabolism
- Maximum rates of ATP resynthesis from anaerobic and aerobic metabolism
- Glycolysis in anaerobic metabolism (1)
- Glycolysis in anaerobic metabolism (2)
- Energy provision for prolonged moderate intensity exercise
- Energy sources during exercise
- Energy provision from fat, carbohydrate and protein
- Carbohydrate oxidation
- Fuels for exercise
- Carbohydrate depletion
- Falls in carbohydrate availability during prolonged exercise at 70% maximal oxygen uptake (VO2 max)
- Glycogen and exercise performance
- Exercise capacity and pre-exercise muscle glycogen content
- Fat as a fuel for exercise (1)
- Fat as a fuel for exercise (2)
- Fat breakdown begins with lipolysis
- Mobilisation of lipid from adipose tissue
- Factors influencing fuel selection for exercise
Topics Covered
- Energy
- Energy metabolism and the role of adenosine triphosphate (ATP)
- Energy sources for high-intensity exercise like sprinting
- Energy provision for prolonged moderate-intensity exercise
- Fat as a fuel for exercise
Talk Citation
Gleeson, M. (2021, September 29). An introduction to exercise metabolism 1 [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved December 5, 2024, from https://doi.org/10.69645/SNAL2820.Export Citation (RIS)
Publication History
Financial Disclosures
- Dr. Gleeson is co-author of textbooks published by Oxford University Press, Human Kinetics, Tourledge, Meyer & Meyer Sport for which he receives royalties. He has received funding for research from several food/drug/supplement companies including Nestle, PepsiCo, GlaxoSmithKline, and Yakult.
An introduction to exercise metabolism 1
Published on September 29, 2021
46 min
A selection of talks on Cardiovascular & Metabolic
Transcript
Please wait while the transcript is being prepared...
0:00
This talk provides an introduction to exercise metabolism.
It's about the fuels and the metabolic pathways that supply
energy for various sports, and physical activities.
My name is Michael Gleeson, and I'm Emeritus Professor of Exercise Biochemistry at Loughborough University.
This lecture is going to be divided into two parts.
In the first part, I'm going to cover the essential role of adenosine triphosphate
(ATP) in supplying energy for all bodily processes, including muscle contraction.
We'll cover the main energy pathways through which ATP is resynthesised during exercise,
and get an understanding of the important role of phosphocreatine in high-intensity exercise,
and the reasons why carbohydrate availability is a limiting factor for endurance performance.
Then in the second part of the lecture, we'll look at how different factors influence fuel selection during
exercise, with a main focus on the influences of exercise intensity and duration.
I'll explain some of the main contributors to fatigue development
during both high-intensity exercise, and more prolonged endurance exercise.
1:18
After this lecture, you should appreciate the essential role of adenosine triphosphate (ATP)
in supplying energy for all bodily processes including muscle contraction,
which is obviously what we need to exercise.
You should know the main energy pathways through which
ATP is resynthesised during exercise, since we don't store very much of it in the muscle.
You should understand the important role of phosphocreatine in high-intensity exercise,
and understand why carbohydrate availability can be a limiting factor for endurance performance.
You'll also hopefully appreciate how exercise intensity and duration influence fuel selection during exercise,
the mixture of carbohydrate, and the proportions of those fuels that we use for energy.
Finally, understand some of the main contributors to fatigue development
during both high-intensity and prolonged endurance exercise.