Velocity-based training · for the platform, not the lab
Every rep,
measured.
A Movesense IMU clips to your bar sleeve. V-Lo turns the raw motion data into bar speed, tempo, and velocity loss — set by set — so you load off what your body did today, not what a spreadsheet guessed on Sunday.
No proprietary hardware to buy. Works with the Movesense Flash sensor you already own.
How it works
Three steps, zero lab coat.
Clip it to the bar
The Movesense Flash snaps into a low-profile sleeve mount. Under 10 grams, no cables, pairs once over Bluetooth.
Lift like normal
The sensor's onboard IMU samples acceleration at 104 Hz. V-Lo integrates it into bar position and velocity in real time, rep by rep.
Autoregulate the set
When velocity loss crosses your threshold, V-Lo tells you to stop, drop weight, or push on — before the bar speed does it for you.
Training zones
Load by bar speed, not by feel.
V-Lo classifies every rep against published velocity-based training zones, calibrated per lift and per lifter over time.
| Zone | Mean velocity | % of 1RM | Training effect |
|---|---|---|---|
| Starting strength | > 1.30 m/s | bodyweight | Overcoming inertia from a dead stop: jumps and throws |
| Speed-strength | 1.00 – 1.30 m/s | 20–40% | Speed first, strength second: light loads, fast |
| Strength-speed | 0.75 – 1.00 m/s | 40–60% | Moderately heavy loads, as fast as possible |
| Accelerative strength | 0.50 – 0.75 m/s | 65–80% | Driving heavy loads as fast as possible |
| Absolute strength | < 0.50 m/s | 80–100% | Maximal force: heavy triples, doubles, singles |
The five velocity zones from the VBT literature (Bryan Mann, via GymAware), judged on each set’s average bar speed and the same for squat, bench and deadlift. % of 1RM is typical, not a rule: the measured speed decides the zone.
Built for the platform
Scoped to competitive powerlifting, on purpose.
V-Lo isn't a general fitness tracker with a barbell mode bolted on. Every zone, cue, and report is written for lifters training toward a total — squat, bench, deadlift — under federation rules, not for generic strength training.
From the database · work in progress
A real recorded set.
Pulled live from Supabase, straight off a Movesense sensor, not the fictional demo above.
Vertical bar velocity — raw session
Not loaded yet — click "Load session" to fetch it from Supabase.
Raw, unprocessed sensor output — every point is one sample's vertical velocity over time. It isn't aligned into reps or a lift-cycle percentage yet, that's the next step; this card just proves the data is real and the fetch works.