Performance

12 Oct 2026 · 12 min read

Estimated vs Laboratory-Measured VO2max: What Is the Difference?

An estimated VO2max and a laboratory measurement use different evidence. Learn what each number means and how to compare results over time.

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Body Composition

12 Oct 2026 · 12 min read

DEXA vs Bioelectrical Impedance: Which Measures Body Composition More Accurately?

DEXA and BIA estimate body composition from different physical signals. Understand accuracy, repeatability and why the same label can produce different results.

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Metabolism

12 Oct 2026 · 7 min read

What Is Resting Energy Expenditure and How Is It Measured?

Resting energy expenditure can be estimated with equations or measured with indirect calorimetry. Learn what each result can and cannot tell you.

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Hyperbaric

25 Sept 2026 · 3 min read

Hyperbaric Chamber in Madrid: What to Know Before Your First Session

Volumes Lab has a hyperbaric oxygen chamber in central Madrid: 60 minute sessions at 2.0 ATA with 95% oxygen. What a session involves, how to prepare and how to book.

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Medical

14 Sept 2026 · 4 min read

GLP-1 in Madrid: What to Know Before a Medical Consultation

GLP-1 medicines are prescription treatments used for type 2 diabetes and, in some cases, weight management. They are not appropriate for everyone: this is what a medical consultation in Madrid involves.

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Performance

14 Jun 2026 · 6 min read

Why VO2max is the single best predictor of longevity

A high VO2max is more strongly associated with lifespan than smoking, diabetes or hypertension. Here is what the number actually measures, and how to move it.

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Training

22 May 2026 · 5 min read

Strength after forty: the non-negotiable

Lean mass and force production collapse from the fourth decade onwards. Resistance training is the only intervention that reliably reverses it.

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Diagnostics

30 Apr 2026 · 4 min read

Why the scale lies, and DEXA doesn't

Body weight tells you nothing about the ratio of muscle to fat, or where that fat sits. A DEXA scan resolves the picture in eight minutes.

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