Marcus Reed portrait
MR
VICTEVO Certified· Class of 2027 · UIL 5A· Heritage High School · Dallas, TX

Marcus Reed

Running Back
@marcusreed
VICTEVO CertifiedClass of 2027 · UIL 5AComposite Score 7882nd · RB · TX 2027VICTEVO CertifiedClass of 2027 · UIL 5AComposite Score 7882nd · RB · TX 2027VICTEVO CertifiedClass of 2027 · UIL 5AComposite Score 7882nd · RB · TX 2027
Marcus Reed · Profile8 Core · Engine Size
The 8 Core Capacities

Engine Size

How long you can hold quality.

Engine Size is not general cardio — it is sport-specific work capacity. We test three energy systems: alactic, anaerobic-lactic, and aerobic. Together they answer: how many high-quality efforts can you produce, and how fast do you recover between them.

Marcus's Score
68
Yo-Yo IR2: Level 22.4 · VO₂ est: 56 ml/kg/min
Above age-sport average. Pro tier is the next development target.

How we measure it · 5 tests

Protocol · Equipment · Benchmarks
YYIR

Yo-Yo Intermittent Recovery

Equipment
20m marked lane · audio beep protocol
Protocol
Progressive shuttles with active recovery until failure.
Measures
Level reached · Total distance covered (m)
Why it matters
The gold-standard team-sport endurance test. Recovers-between-efforts profile — exactly how games are played.
Developing
Level 15
D1
Level 20
Pro
Level 23+
VO2

VO₂ Max (submax est.)

Equipment
Metabolic cart or field submax protocol
Protocol
20-min submax progressive test with HR/RPE tracking.
Measures
VO₂ max estimate (ml/kg/min) · Ventilatory thresholds
Why it matters
Aerobic ceiling. The base every anaerobic effort recovers on top of.
Developing
45 ml/kg/min
D1
55 ml/kg/min
Pro
62+ ml/kg/min
WIN

Wingate 30-Second

Equipment
Cycle ergometer with power meter
Protocol
30-sec maximal effort against resistance.
Measures
Peak power (W) · Mean power · Fatigue index (%)
Why it matters
Anaerobic capacity. Fatigue index tells us how gracefully you die.
Developing
35% drop
D1
28% drop
Pro
<22% drop
RSE

Repeat Sprint Endurance

Equipment
Timing gates · sled or resistance option
Protocol
10 × 40-yd sprints, 30-sec rest.
Measures
Best time · Average time · % decrement
Why it matters
Game-realistic. Any sport with repeated high-intensity bursts lives or dies by this number.
Developing
10% drop
D1
6% drop
Pro
<4% drop
HRR

Heart Rate Recovery

Equipment
Chest-strap or wearable · standardized protocol
Protocol
Peak HR effort, monitor 60-sec recovery.
Measures
1-min recovery (bpm dropped) · Return to baseline (min)
Why it matters
How fast the engine cools down between efforts. Compounds across every set in every practice.
Developing
25 bpm
D1
35 bpm
Pro
45 bpm+
VICTEVO Sports — Train Smart. Measure. VICTEVO.