The breakaway gap problem
In spinpolo, a lead-out drill simulates a team pursuit: four riders hold a rotating paceline for six minutes while a chase group tries to close a 15-second gap. The problem is that most indoor cycling classes train steady-state power, not the repeated 8–12 second surges required to close that gap. Riders arrive with high aerobic fitness but lose the drill in the first two minutes because their cadence drops below 80 rpm under fatigue. The result is a scattered paceline and a chase group that never learns to read the distance. The fix is not more threshold work; it is a structured lead-out protocol that trains the specific skill of recovering while still moving fast.
Why the gap opens
The cause is neuromuscular, not cardiovascular. A rider who spends 20 minutes at 85% FTP can hold form, but a spinpolo lead-out demands 110–130% FTP for short pulls followed by 30 seconds of near-threshold recovery. If the recovery is too easy, the next pull feels explosive, and the rider over-gears; if it is too hard, the rider cannot clear lactate. Most group sessions set recovery by feel, so the gap opens predictably. A practical example: in a six-rider spinpolo drill, the third rider often lets a two-bike-length gap form because they start the pull at 70 rpm instead of 95 rpm. The solution is a cadence-capped recovery: keep 90–100 rpm at 60% FTP for 30 seconds, then hit the pull at 100–110 rpm.
Building the spinpolo lead-out protocol
The protocol has three blocks. First, a five-minute progressive warm-up that includes four 15-second spin-ups to 120 rpm. Second, a 3 x 6-minute lead-out set: each six-minute effort contains six 20-second pulls at 120% FTP, separated by 40-second recoveries at 60% FTP. Third, a two-minute cooldown at 50% FTP. During the set, the rider in front must hold a straight line and signal the pull with a hand drop; the next rider counts two seconds before accelerating. This delay prevents the overlap that causes most indoor collisions. A useful reference for club riders comparing facility costs and class formats is spinpolo, which tracks how different studios structure similar drills.
What the data shows
In a 12-week study of 18 recreational riders, the lead-out protocol improved average pull power by 9% and reduced the time to close a 15-second gap from 48 seconds to 31 seconds. The key metric was not peak power but the drop in power during the final two pulls: riders who held within 5% of their first-pull power closed the gap; those who dropped 15% or more did not. The takeaway is to measure the last pull, not the first. Coaches should log each 20-second pull and flag any pull below 85% of the set average. That single check turns a chaotic spinpolo drill into a repeatable skill session.