Acceleration is one of the most important qualities in athletic performance. Whether an athlete is exploding off the line of scrimmage, chasing down a ball, or creating separation from an opponent, the ability to accelerate quickly can make the difference between winning and losing a play.
While maximum velocity often receives the most attention in speed development, many sporting actions involve relatively short distances. Athletes frequently accelerate, decelerate, and change direction before ever reaching top speed.
Developing acceleration requires more than simply running short sprints. It involves teaching athletes how to position their bodies, apply force into the ground, and coordinate their movements to generate horizontal momentum.
At VertiMax, we believe acceleration development should follow a systematic progression: teach proper positions, reinforce those positions under resistance, and then develop the ability to apply force explosively in sport-specific movements.
Understanding the Mechanics of Acceleration
Acceleration is the rate at which an athlete increases velocity. In sprinting, the objective is to move from a stationary position to a higher running speed as efficiently as possible.
During the initial acceleration phase, athletes must produce substantial horizontal propulsive force to overcome inertia and move their bodies forward.
Several mechanical characteristics contribute to effective acceleration:
- Forward Body Lean: Athletes accelerate with a forward-oriented body position that helps direct their ground reaction forces horizontally.
- Positive Shin Angles: During early acceleration, the stance-leg shin generally angles forward, allowing the athlete to direct force backward into the ground.
- Triple Extension: Coordinated extension of the hip, knee, and ankle contributes to force production during push-off.
- Aggressive Arm Action: Proper arm mechanics support rhythm, coordination, and forceful lower-body movements.
- Progressive Stride Development: As velocity increases, athletes gradually transition from shorter, powerful initial steps to longer strides and a more upright running posture.
One of the most common mistakes in acceleration training is asking athletes to sprint harder without first teaching them how to move effectively.
An athlete may be strong and powerful in the weight room but struggle to translate those qualities into effective sprint mechanics.
This is why we begin by establishing proper positions before introducing more dynamic movements.
Phase 1: Teaching Acceleration Mechanics with Wall Drills
Wall drills provide an excellent starting point for teaching acceleration mechanics because they allow athletes to develop awareness of body positioning in a controlled environment.
By placing their hands against a wall, athletes can establish and maintain a forward body lean while learning how to coordinate their lower-body movements.
The wall provides support, allowing the athlete to concentrate on positioning without the additional challenge of moving forward.
1. Wall Lean and Acceleration Position
The first progression focuses on establishing the proper acceleration posture.
The athlete places both hands against a wall at approximately shoulder height and walks their feet backward until their body forms a forward lean.
The objective is to create a relatively straight line from the head through the torso and stance leg, without excessive bending at the waist.
Key coaching points:
- Maintain a neutral head and spine.
- Keep the torso and pelvis aligned.
- Establish a forward body lean.
- Position the stance leg to push forcefully into the ground.
- Avoid excessive arching of the lower back.
This exercise teaches athletes that acceleration involves leaning the entire body forward rather than simply bending at the hips.
2. Wall Marches
Once athletes understand the starting position, we introduce alternating leg movements.
The athlete maintains the forward lean while driving one knee forward into a sprint-specific position.
The supporting leg remains extended, while the elevated leg demonstrates appropriate hip and knee flexion with the foot positioned for the next ground contact.
The athlete then alternates legs in a controlled marching pattern.
Key coaching points:
- Maintain consistent posture throughout the movement.
- Drive the thigh forward without excessive pelvic rotation.
- Keep the ankle dorsiflexed during recovery.
- Coordinate opposite arm and leg movements when appropriate.
- Maintain pressure into the ground through the supporting leg.
The objective is to teach athletes how to maintain acceleration posture while transitioning between single-leg support positions.
3. Wall Switches
After athletes demonstrate control during wall marches, we increase the speed of movement.
Wall switches require athletes to rapidly exchange leg positions while maintaining their forward lean.
We typically progress from single switches to double and triple switches.
The emphasis shifts from simply finding the correct positions to moving between those positions quickly and efficiently.
Key coaching points:
- Switch legs aggressively without losing posture.
- Maintain a stable torso.
- Avoid excessive vertical bouncing.
- Strike the ground with an active, forceful action.
- Maintain consistent rhythm and coordination.
These drills begin introducing the speed and coordination required during actual sprinting.
However, wall drills are teaching tools, not substitutes for sprinting. The goal is to establish movement awareness and then transfer those mechanics into more dynamic exercises.
Phase 2: Transferring Acceleration Mechanics to the Prowler or Sled
Once athletes understand proper acceleration positioning, the next step is to reinforce those mechanics through resisted movement.
This is where sled and prowler exercises become valuable.
During wall drills, the athlete learns to establish and maintain a forward lean while coordinating the lower body. When we transition to pushing a sled or prowler, the athlete must apply force to move an external load forward.
The resistance naturally encourages a forward-oriented body position and provides an opportunity to develop the strength and coordination required for acceleration.
Why Sled and Prowler Training Works
Acceleration requires athletes to apply large amounts of force into the ground, particularly during the initial steps.
Sled and prowler training allows us to emphasize this horizontal force application.
When an athlete pushes a prowler, they must generate sufficient force to overcome the resistance and maintain forward movement.
This reinforces several important qualities:
1. Horizontal Force Production
The athlete learns to push forcefully backward against the ground to create forward movement.
2. Acceleration Posture
The resistance encourages the athlete to maintain a forward body orientation similar to the early stages of sprint acceleration.
3. Powerful Leg Drive
Each step requires coordinated hip, knee, and ankle extension to generate propulsive force.
4. Ground Contact Awareness
The athlete experiences the importance of applying force through the ground rather than simply moving their legs quickly.
Coaching the Prowler
When introducing prowler training, our initial focus is not on how much weight the athlete can move.
Instead, we emphasize maintaining the positions established during the wall drill progressions.
We want athletes to demonstrate a strong forward lean, stable torso, and deliberate leg drive.
As the athlete becomes more proficient, resistance can be adjusted to increase the physical demands.
One important consideration is that the prowler is a training progression, not an exact replication of sprinting. Hand support, loading, and movement speed alter sprint mechanics.
The objective is to reinforce useful positions and force-production qualities that can later be transferred into free sprinting.
Phase 3: Developing Acceleration with VertiMax Resistance
After establishing proper positions through wall drills and reinforcing force application through sled and prowler exercises, we can introduce VertiMax resistance to further develop acceleration performance.
VertiMax technology provides a unique training opportunity by allowing athletes to perform explosive movements against external resistance while maintaining freedom of movement.
Unlike a prowler, where the athlete must push against an external implement, VertiMax resistance can be applied directly to the athlete.
This allows us to challenge acceleration mechanics while incorporating more natural sprinting movements.
Resisted Acceleration
Using the VertiMax Raptor, athletes can perform short-distance resisted accelerations while focusing on maintaining the mechanical qualities established in the earlier progressions.
The resistance increases the force demands of the movement, requiring the athlete to produce greater propulsive effort to accelerate forward.
Key coaching points:
- Maintain an appropriate forward body lean during the initial steps.
- Push forcefully backward into the ground.
- Execute aggressive, coordinated arm action.
- Avoid excessive reaching with the front foot.
- Allow the body to rise progressively as acceleration develops.
The objective is not simply to make sprinting more difficult.
The objective is to provide resistance that challenges force production without creating excessive changes in sprint mechanics.
Selecting the Appropriate Resistance
One of the most important considerations in resisted acceleration training is choosing the correct resistance.
Too little resistance may not provide the desired training stimulus, while excessive resistance can significantly alter movement mechanics.
The appropriate load depends on the athlete's strength, training experience, technical ability, and the objective of the session.
For some athletes, heavier resistance may be appropriate when emphasizing force production during the initial acceleration steps.
For others, lighter resistance may be more appropriate when the goal is to maintain higher movement velocities and reinforce sprint mechanics.
Regardless of the load, coaches should monitor the athlete's posture, ground contact mechanics, and ability to execute each repetition with intent.
Resistance should support the training objective, not compromise movement quality.
Phase 4: Transferring Resisted Acceleration to Free Sprinting
While wall drills, sleds, prowlers, and VertiMax resistance all provide valuable training benefits, the ultimate objective is to improve an athlete's ability to accelerate during unrestricted sprinting.
This requires athletes to apply the positions and force-production qualities developed during training without external assistance or resistance.
Following resisted acceleration exercises, athletes can perform short, unresisted sprints over distances such as 5, 10, or 20 yards.
These repetitions allow athletes to express their acceleration ability at full speed.
Coaches should observe whether athletes can maintain effective acceleration mechanics, produce powerful initial steps, and transition smoothly into upright sprinting.
Timed accelerations can also provide objective feedback on whether the training program is improving performance.
Although resisted and unresisted sprints can be paired within a training session, the immediate effects of this pairing vary between athletes. Long-term improvements depend on consistent, appropriately programmed training.
Putting It All Together: An Acceleration Development Progression
A structured acceleration session might follow this sequence:
Step 1: Establish Positioning
- Wall lean holds
- Wall marches
- Single, double, and triple wall switches
Step 2: Reinforce Horizontal Force Application
- Light-to-moderate prowler pushes
- Short resisted sled drives
- Emphasis on posture and powerful ground contacts
Step 3: Develop Resisted Acceleration
- VertiMax Raptor resisted starts
- Short resisted accelerations over 5–15 yards
- Resistance selected according to the training objective
Step 4: Transfer to Free Sprinting
- 5-yard explosive starts
- 10-yard accelerations
- 20-yard progressive accelerations
The volume, resistance, and intensity of each exercise should be adjusted based on the athlete's age, experience, and training goals.
These phases represent a teaching progression rather than a rigid requirement that every athlete complete every exercise in every session.
The Importance of Coaching and Progression
One of the biggest mistakes in speed development is progressing athletes to more advanced exercises before they demonstrate an understanding of the fundamental movement patterns.
Adding resistance to poor mechanics does not automatically improve performance. In some cases, it simply reinforces inefficient movement strategies.
This is why the teaching progression matters.
Wall drills establish an understanding of acceleration positioning.
Sled and prowler exercises reinforce the ability to produce force while maintaining those positions.
VertiMax resisted accelerations challenge athletes to apply force during increasingly dynamic sprint movements.
Finally, free sprinting provides the opportunity to transfer those qualities into actual performance.
Coaches should continually evaluate how athletes move and adjust their programming accordingly.
Final Thoughts: Acceleration Is a Skill That Must Be Developed
Acceleration is not simply about being strong or moving your legs faster. It is the result of effective mechanics, coordinated force production, and the ability to apply those qualities rapidly.
Developing this skill requires a progression that moves from understanding positions to executing them under increasingly demanding conditions.
By beginning with wall drills, transitioning to sled and prowler exercises, and incorporating VertiMax resisted acceleration training, coaches can create a systematic approach to improving an athlete's first steps.
The goal is not to make every exercise more difficult. It is to make every exercise purposeful.
Teach the position. Develop the force. Apply it at speed.
That is the foundation of effective acceleration development.
