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ZOE Science & Nutrition
Recap: What time of day are your muscles strongest? | Prof. Karyn Esser
Oct 29, 2024
15:38
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Professor Karyn Esser, a leading expert in muscle strength and circadian rhythms at the University of Florida, sheds light on how our muscle strength varies throughout the day. Discover why late afternoons, particularly around 4 to 5 PM, are prime times for peak performance. Delving into the interplay of circadian rhythms and gene expression, she explains how timing can enhance muscle recovery and exercise efficiency. Karyn also discusses the impact of aging on these rhythms and suggests strategies for maintaining optimal muscle health.
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Quick takeaways
- Muscle strength peaks in the afternoon between two and five o'clock, enhancing physical performance for both men and women.
- Circadian rhythms play a crucial role in gene regulation for muscle cells, optimizing their functionality based on anticipated daily activities.
Deep dives
Muscle Strength and Daily Rhythms
Muscle strength varies throughout the day, with a notable peak occurring between two and five o'clock in the afternoon. Research indicates that both men and women experience enhanced physical strength during this time, which is consistent across various age groups. The increase in strength is attributed to changes in muscle function rather than nervous system responses, with local adaptations at the muscle level being a significant factor. Additionally, mitochondrial activity, which is crucial for energy production within muscle cells, also shows higher capacity in the afternoon, further supporting better performance during this period.
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