FTP (Functional Threshold Power) is the key metric for measuring cycling performance and the foundation of scientific training.
What is FTP?
FTP represents the maximum average power output (watts) you can sustain for 1 hour. It’s the baseline for defining training zones.
FTP Training Zones
| Zone | %FTP | Feeling | Training Purpose |
|---|---|---|---|
| Z1 Recovery | <55% | Very easy | Active recovery |
| Z2 Endurance | 56-75% | Conversational | Aerobic base |
| Z3 Tempo | 76-90% | Somewhat challenging | Endurance building |
| Z4 Threshold | 91-105% | Difficult | FTP improvement |
| Z5 VO2max | 106-120% | Very painful | Maximum oxygen uptake |
| Z6 Anaerobic | 121-150% | All-out sprint | Anaerobic capacity |
How to Test FTP
Method 1: 20-Minute Test
- Warm up for 10-15 minutes
- Ride all-out for 20 minutes
- Record average power
- FTP = Average Power × 0.95
Method 2: Ramp Test
Gradually increase power until exhaustion, ideal for platforms like Zwift.
How to Improve FTP
1. Sweet Spot Training
Long rides at 88-94% FTP:
- 2×20 minutes, 5-minute rest
- 3×15 minutes, 3-minute rest
2. Threshold Intervals
Intervals at 95-105% FTP:
- 4×10 minutes, 5-minute rest
- 5×8 minutes, 4-minute rest
3. Adequate Recovery
Recovery is as important as training! Ensure 1-2 days of complete rest or easy riding per week.
Recommended Tools
- Power Meters: Favero Assioma, Garmin Rally
- Smart Trainers: Wahoo KICKR, Tacx Neo
- Training Software: TrainerRoad, Zwift, Intervals.icu
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