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Updated: May 9, 2026
06:53
Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures
Published on: November 11, 2016
Circadian rhythms, skeletal muscle molecular clocks, and exercise
Elizabeth A Schroder1, Karyn A Esser
11Center for Muscle Biology and 2Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY.
Exercise and Sport Sciences Reviews
|August 7, 2013
Summary
Skeletal muscle health relies on molecular clocks. Exercise acts as a crucial time-setting cue for these clocks in muscle and other body tissues, influencing overall health.
Area of Science:
- Physiology
- Chronobiology
- Molecular Biology
Background:
- Skeletal muscle constitutes ~40% of human body mass and is vital for overall health.
- Molecular clocks, or circadian rhythms, are endogenous time-keeping mechanisms present in most cells.
- Disruptions in circadian rhythms are linked to various metabolic and physiological disorders.
Purpose of the Study:
- To review the current understanding of molecular clocks within skeletal muscle.
- To explore the emerging role of exercise as a synchronizing cue for peripheral circadian clocks.
- To highlight the implications for human health and disease.
Main Methods:
- This is a review article, synthesizing existing research from peer-reviewed literature.
- Key studies on skeletal muscle circadian rhythms and exercise physiology were analyzed.
- The review integrates findings from molecular, cellular, and whole-body perspectives.
Main Results:
- Molecular clocks are integral to skeletal muscle function, regulating numerous physiological processes.
- Exercise emerges as a potentZeitgeber (time-setting cue) for skeletal muscle and other peripheral tissues.
- Synchronizing muscle clocks with the external environment via exercise can optimize metabolic health.
Conclusions:
- Understanding the interplay between molecular clocks and skeletal muscle is crucial for maintaining health.
- Exercise timing may be as important as exercise itself for maximizing health benefits.
- Further research into exercise-based chronotherapy could offer novel strategies for metabolic disease prevention and treatment.
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