Tech & Gear
Watches, shoes, HR straps, smart trainers — what actually moves performance.
11 articles · sorted by most recent
Carbon Plate Shoes for Heavy Runners: Is the 4% Real?
The original 4% study tested 64 kg runners at sub-4:20/km pace. If you weigh 85+ kg and race above 5:00/km, your real gain is closer to 1-2% — or nothing statistically significant.
Garmin VO2max Accuracy vs Lab Testing: The 6.85% MAPE Truth (and Why It Matters)
Garmin VO2max hits 6.85% MAPE vs lab CPET — but that number hides a fitness-level trap: highly trained athletes face 10%+ error and a 6 ml/kg/min underestimate.
How to Use HRV from Your Whoop or Oura to Actually Adjust Today's Training
Your Whoop or Oura collected HRV last night. Here's the exact rolling-baseline math and decision tree to turn that number into a specific session swap — with peer-reviewed cutoffs.
AthleteOS vs Pfitzinger Marathon Plan: AI Adaptation vs a Proven Static Block
Pfitzinger's 18/55 wins for structure and cost ($29.95 one-time). AthleteOS wins when you miss a week, when your HRV tanks, or when you belong to the 50% of runners whose physiology doesn't fit a pyramidal plan.
AthleteOS vs Garmin Coach: When Watch-Based Coaching Stops Being Enough
Garmin Coach ignores your HRV Status even when it hits 25. AthleteOS reads that signal and rebuilds your week — here's the exact threshold where free watch coaching fails.
Best AI Coach App for Endurance Athletes in 2026: Which Actually Works
No single AI coach app wins for every athlete. Expert coaches rated AI plans from 2/5 (minimal input) to 4/5 (detailed input). Here's which app fits your training reality.
Best App for Hyrox Athletes in 2026: 4 Options for Training the Run + Functional Hybrid
AthleteOS wins for unified hybrid load management. TrainingPeaks wins if you're endurance-first. Hevy and Strong only cover half the race.
How to Self-Coach an Ironman in 2026: The Software Stack That Replaces a $300/mo Coach
Hire a triathlon coach and you'll spend $3,600 before race day. Here's the 2026 software stack — $35–$75/month — that covers 80% of what that coach actually does.
How to Track CTL, ATL, and TSB Without Paying for TrainingPeaks Premium
TrainingPeaks Premium costs $19.95/month, but Intervals.icu gives you an identical PMC chart free. Here's every option, what each costs, and where AthleteOS fits.
AthleteOS vs Intervals.icu: Which One Actually Coaches You?
Intervals.icu is free and full of data. AthleteOS tells you what to do with it. Here's which one you actually need, with pricing, feature tables, and a head-to-head verdict.
Chest Strap vs Optical Heart Rate Monitor: The Three-Tier Accuracy Model
Wrist optical HR error reaches 16.5 bpm for dark skin at high intensity. Arm-band optical hits MAE 1.43 bpm. Here's the three-tier framework for choosing the right sensor.