Coaching practices for Vo2max Interval Training Protocol

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Does this sound like the set of challenges you might be facing?

• I’ve been logging plenty of easy miles and my aerobic base feels solid, but the top-end number won’t climb
• I only have a few weeks and barely any hours in the week, and I want the fastest possible way to get noticeably fitter
• I’ve been logging miles for months and my number won’t budge
• I’ve had a steady base for a while but my hardest ceiling hasn’t budged in months, and I think I’ve been too comfortable
• On my hard intervals I’m never sure if I’m actually pushing into the high zone or just half-trying, and I also can’t tell when I’ve recovered enough to go again

Practices that may help

1. VO2 max intervals (Zone 4–5) to push your aerobic ceiling
   Four-minute intervals at near-maximal effort, repeated 4–6 times, are the most efficient way to raise your VO2 max.
   VO2 Max and Longevity: Training Your Aerobic Ceiling
2. Use HIIT for rapid VO2max gains when time is limited
   High-intensity interval training raises VO2max in as little as 6–8 weeks — the fastest known training route to a higher aerobic ceiling.
   VO2max Training
3. Train at vVO2max with 3–5 minute intervals to accumulate maximum time at VO2max
   The greatest VO2max stimulus comes from spending as many minutes as possible near your maximum aerobic power — intervals at vVO2max do exactly that.
   VO2max Training
4. VO2max Training
   VO2max — the maximum rate at which your body can consume oxygen during exercise — is among the strongest predictors of all-cause mortality in observational studies, more powerful than traditional risk factors. It is trainable through high-intensity interval training and aerobic base building. The mortality associations are compelling and replicated; the specific training protocols are validated in athletic performance research.
5. VO2 max intervals
   Use 4–8 minute high-intensity intervals at near-maximum effort to directly stress and expand your oxygen ceiling.
   VO2 Max and Longevity: The Peter Attia Framework
6. Use the broken-speech threshold for hard intervals
   When you can only get out single words, you are in the high-intensity zone — useful for timing interval work.
   The Talk Test: Gauge Exercise Intensity Without a Monitor
7. Build a zone 2 aerobic base
   Log 3–4 hours per week of low-intensity aerobic exercise to develop mitochondrial density and fat-oxidation capacity.
   VO2 Max and Longevity: The Peter Attia Framework
8. Zone 2 training to build aerobic base
   Low-intensity, sustainable aerobic exercise performed 3–4 hours per week develops mitochondrial density — the foundation of a high VO2 max.
   VO2 Max and Longevity: Training Your Aerobic Ceiling
9. Assess your VO2max regularly with a validated field test
   You can’t target VO2max improvement if you don’t know your starting point — a field test gives an accurate proxy without lab equipment.
   VO2max Training
10. Build aerobic base with easy running to raise the VO2max ceiling over time
    High-intensity intervals raise VO2max faster in the short term; aerobic base training raises the long-run ceiling.
    VO2max Training

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