Workouts / Interval
Interval
FTP Booster Extended Efforts
An intense, 55-minute session focused on improving your Functional Threshold Power with extended hard efforts at VO2 max intensity.
Duration55:00
TSS78
IF0.92
Blocks5
Time55:00
TSS78
IF0.92
Profile
Targets in % FTP
100%50%0%
0:0027:3055:00
Z2 45% · 25 minZ5 55% · 30 min
Intervals
5 blocksZ2
Warm-up
10:0065%Repeat 5×
Z5
Interval
5:00110%Z2
Recovery
2:0065%Z5
Interval
5:00110%Z2
Cool-down
5:0065%What it trains
VO2-focused intervals raise aerobic ceiling and repeatability for attacks, climbs, and hard surges.