Equilytics · Preusker Stable

Treadmill Profiler

Lactate Threshold · V200 Heart Rate · 3-Day Protocol

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3-Day Protocol

DAY 1 Warm-up 10 min @ 13–15 km/h · Walk 1 min · 3 min @ 20 km/h → collect lactate + HR. Sets benchmark for Day 2 velocity selection.
DAY 2 Two intensities above Day 1 pace → lactate + HR at each step. Default yearling: 24 & 26 km/h
DAY 3 Bracket the threshold — one below, one above Day 2 range → lactate + HR. Default yearling: 22 & 28 km/h

Test Data Entry

Single test point — benchmark for velocity selection

Pt Belt (km/h) Lactate HR (bpm)
V1

Session Notes

Lactate Curve

VLa4 = velocity at 4.0 mmol/L

Heart Rate Curve

V200 = velocity at HR 200 bpm

Full Test Summary

Pt Day Belt (km/h) Eff. (km/h) Lactate HR (bpm) Lac Zone HR Zone
Enter data and click Calculate Profile

What These Numbers Mean

VLa4 (Aerobic Threshold) — the fastest speed the horse can sustain without blood lactate climbing above 4 mmol/L. This is the aerobic ceiling — the foundation of staying ability and fitness. Higher = better aerobic engine.
V200 (Cardiovascular Index) — the velocity at which HR reaches 200 bpm, used as a standardised index of cardiovascular capacity. Not maximum heart rate — horses typically reach 210–230 bpm at full gallop. V200 is chosen because it sits in the linear zone of the HR-velocity curve and allows consistent comparison between horses and across time. Higher V200 = better cardiovascular capacity relative to body weight.
Repeat Testing Value — the true power of this protocol is comparison over time. The same horse tested monthly shows training adaptation — VLa4 rising = aerobic base building. V200 rising = cardiovascular development.