Speed Training
Build Explosive Speed: Plyometrics for Sprinters
How track athletes use plyometric training to shave seconds off their times—and how soccer players can benefit.
Published January 31, 2026
Sprinting is the purest expression of human speed. And while genetics play a role, the fastest athletes in the world share something in common: they all train plyometrically.
Why? Because sprinting isn't just about leg turnover—it's about how much force you can put into the ground with each step and how quickly you can redirect that force. Plyometrics train exactly that.
Why Sprinters Need Plyometric Power
Watch a world-class sprinter in slow motion. Each foot contact lasts roughly 0.08-0.10 seconds. In that moment, they're producing forces 4-5 times their body weight and redirecting it into forward propulsion.
That's not strength in the traditional sense. That's reactive strength—the ability to absorb force and immediately produce force in the opposite direction.
Traditional weight training builds the engine. Plyometrics teach that engine to fire rapidly. You need both, but without plyos, you're leaving speed on the table.
The Science: RSI and Ground Contact Time
Two metrics define sprint-specific power:
Reactive Strength Index (RSI)
RSI measures how well you convert landing force into jumping force: Jump Height ÷ Ground Contact Time
Elite sprinters have RSI values of 2.5-3.0 or higher. Untrained individuals might score below 1.0.
Ground Contact Time (GCT)
How long your foot is on the ground during each stride. At top speed, elite sprinters achieve GCT under 0.10 seconds. The shorter your GCT, the more spring-like your legs become.
Key Exercises for Sprint Performance
1. Sprint Bounding
Exaggerated running strides with maximum distance per step and extended flight time.
Why it matters: Mimics the sprint stride pattern while allowing you to focus on power production per step.
Programming: 4 sets of 30 meters, full recovery between sets
2. Single-Leg Power Bounding
Consecutive maximal bounds on the same leg.
Why it matters: Sprinting is unilateral—you're never pushing with both legs simultaneously. This builds specific power each leg needs.
Programming: 3 sets of 20 meters per leg
3. Depth Jump to Sprint
Step off a box (12-18 inches), land, immediately explode into a maximal 10-meter sprint.
Why it matters: The ultimate reactive strength exercise. Pre-loads muscles with eccentric force, then redirects into horizontal acceleration.
Programming: 4 reps total, 2-3 minutes rest (CNS-intensive)
4. Continuous Vertical Jumps
Repeated maximal vertical jumps with minimal ground contact between jumps.
Why it matters: Trains legs to rapidly produce vertical force rep after rep—similar to each sprint stride.
Programming: 3 sets of 10 jumps
5. Forward Bounding
Exaggerated forward leaps, alternating legs, covering maximum distance.
Why it matters: Trains glutes, hamstrings, and hip extensors to produce repeated horizontal force.
Programming: 4 sets of 20-30 meters
Programming: Integrating Plyos with Sprint Workouts
Option 1: Plyos Before Sprints
Warm-up → Plyometrics (20-30 contacts) → Rest 5-8 minutes → Sprint work. Great for potentiation.
Option 2: Dedicated Plyo Days
Warm-up → Plyometrics (40-60 contacts) → Light technical work. Schedule 48-72 hours from hard sprints.
Key Takeaways for Sprinters
- Plyometrics are non-negotiable for sprinters—they develop reactive strength that separates good from great
- Prioritize horizontal exercises (bounding, broad jumps, depth jump to sprint) over pure vertical work
- Quality over quantity—plyos are about maximum effort, not endurance
- Time your plyos carefully—always when fresh, never after exhausting sprint work
- Recover fully—48-72 hours between sessions minimum
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