AMA #57: High-intensity interval training: benefits, risks, protocols, and impact on longevity
Peter Attia
Mar 11, 2024
Mindsip insights from this episode:
Measure max heart rate through maximal effort testing
The '220 minus your age' formula is insufficient for determining max heart rate; the only way to truly know it is to measure it during a maximal effort test.
Differentiate HIIT from sprint training for effective workouts
High-Intensity Interval Training (HIIT) is sub-maximal, while Sprint Interval Training (SIT) is a supra-maximal effort that exceeds your VO2 max power output.
Maximize effort with 10-second all-out rule
A true 'all-out' effort can only be sustained for about 10 seconds, as anything longer causes you to subconsciously hold back.
Specify effort levels and durations instead of saying 'HIIT'
Instead of using the vague term 'HIIT,' be specific about the effort level, work duration, rest duration, and number of repetitions.
Utilize power or RPE for effective training intervals
When structuring training intervals, using power (watts) or Rate of Perceived Exertion (RPE) is more robust than relying on heart rate.
Recognize Irawa as true creator of Tabata protocol
The famous Tabata protocol was actually developed by coach Irawa, not the researcher Tabata who first authored the paper on it.
Understand that sprints don't maximize heart rate
Short, all-out sprints often result in a lower peak heart rate than longer VO2 max intervals because there isn't enough time for the heart to reach its maximum.
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