aerobic decoupling

Older Black runner examining heart rate drift after an easy run

Was My Easy Run Really Easy? AI, RPE and Heart Rate Drift

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Heart rate rose during an easy run. Does that prove the run became too hard? I look at what heart-rate drift can tell an older runner, what can corrupt the number and why my AI coach sometimes refuses to calculate it.

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Was My Easy Run Really Easy? AI, RPE and Heart Rate Drift Read Post »

AI Running Coach Experiment, Heart Rate Training, Running After 50: Testing & Data
Vintage comic-style illustration of Plus50Fit avatar with medium-brown skin, salt-and-pepper beard, Goodr sunglasses, running cap, and Shokz headphones, scratching his chin with a perplexed expression. Thought bubbles show Garmin and Strava logos, representing confusion over race predictions.

Why are My Garmin and Strava Race Predictors so far off? I asked AI.

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The Conundrum That Sparked a Deep Dive You lace up, track your training, put in the klicks or miles, and check your devices hoping for some feedback. And then you see it: your Garmin race predictor says you could run a sub-2 hour half marathon, while Strava suggests you’ll be closer to 2:20. So who’s

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Why are My Garmin and Strava Race Predictors so far off? I asked AI. Read Post »

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