Mitochondrial Changes: Training Volume vs. Intensity

🔥Volume or intensity?⁣⁣

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❓The never ending question of what is more important to improve endurance performance!⁣⁣

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⚠️The answer is: both. At least if we go by mitochondrial function.⁣⁣

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👨🏻‍🔬It's the one thing you took away from highschool biology - the mitochondria is the powerhouse of the cell.⁣

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🚴You need those long continuous endurance days at moderate intensity to optimize mitochondria content.⁣

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🏋️You also need days at very high intensity well beyond 100% of your VO2 max to improve your mitochondrial respiration.⁣

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Now obviously there are more factors contributing to endurance performance and even more so to CrossFit performance.⁣⁣

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Nevertheless mitochondria content and respiratory capacity are key to endurance performance and eventually, CrossFit performance. ⁣⁣

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☝️Check the slides above to see the data of a meta analysis which shows how training parameters differently impact mitochondria adaptations.⁣

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Reference:⁣⁣

Granata, Jamnick, Bishop. Sports Med. 2018 Aug;48(8):1809-1828. PMID: 29934848

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