Category

Hyrox & Hybrid

Hyrox programming, hybrid athlete blocks, compromised-running pacing.

5 articles · sorted by most recent

Hyrox

CrossFit Athletes Entering Hyrox: How to Build the Aerobic Engine Box Training Never Gave You

The only peer-reviewed Hyrox study found VO2max predicts finish time (rho=-0.71), not grip strength. Here's the 8-16 week fix for CrossFit athletes.

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AO
AthleteOS Coaching Team
Hyrox

Hypertrophy + Hyrox: Can You Add 4 kg of Muscle Without Wrecking Your Run Splits?

Adding 4 kg of muscle costs 80–112 seconds across Hyrox's 8 km runs. Here's the science on when the trade-off works — and the block structure that protects both gains.

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AO
AthleteOS Data Science
Hyrox

HYROX Pacing: Run at Half-Marathon Effort, Not 5K Pace

Run all 8 HYROX kilometers at half-marathon effort, not 5K pace. A too-fast Run 1 costs you Run 5 — the statistically slowest split. Here's the exact pace by finish goal.

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AO
AthleteOS Coaching Team
Hyrox

Hyrox Compromised Running: Why Your 5K Pace Is Useless in a Race

82% of athletes need 679m to re-establish normal running mechanics post-exercise — longer than a full Hyrox run. Your 5K pace predicts almost nothing about Run 5.

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AO
AthleteOS Coaching Team
Hyrox

Hyrox Running Fade: You're Protecting the Wrong Run

Run 5 — not Run 8 — is the slowest split in Hyrox per peer-reviewed data. Here's why, and how to pace all 8 runs to finish 5–10% faster.

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AO
AthleteOS Coaching Team

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