Faster acceleration comes down to how much horizontal force you can push into the ground during each step. The harder you drive backward against the surface, the faster you move forward. Improving this requires a combination of strength, technique, and explosive training that specifically targets the first few meters of a sprint.
Why Horizontal Force Matters Most
During acceleration, your body is fighting inertia. The force that actually propels you forward isn’t how hard you push straight down into the ground, but how much of your total force is directed horizontally. Research in sprint biomechanics consistently shows that athletes who produce greater horizontal ground reaction force during the contact phase reach higher velocities in early acceleration. Your ability to produce large amounts of force and power matters more than the ability to move your legs quickly, especially in those critical first steps.
This is why pure leg speed drills won’t dramatically improve your acceleration. The priority is building the capacity to generate force in a horizontal direction and applying it efficiently through body position and ground contact.
Body Position and Technique
Your posture during the first several steps determines how effectively you convert strength into forward speed. When starting from a standstill (a two-point stance), your center of gravity should sit directly above your front foot. Your front leg should be bent at roughly 90 degrees, and your rear leg at about 125 degrees, with your hips at shoulder width or slightly wider. Keep your arms straight and positioned slightly in front of your hands.
As you drive out, maintain a body angle between 80 and 85 degrees from the ground. This forward lean lets you direct more force horizontally rather than vertically. A common mistake is standing upright too early, which shifts your force production straight down and kills acceleration. Keep your head, neck, shoulders, and upper body relaxed. Tension in these areas wastes energy and disrupts your movement pattern. Think about “pushing the ground away behind you” with each step rather than trying to lift your knees high.
The Muscles That Drive Acceleration
Not every leg muscle contributes to acceleration equally, and some actually work against it. The hamstrings and the muscles along the outside of your hip (the gluteus medius) function as your primary accelerators, driving you forward with each ground contact. Your calf muscles play a major role in generating the final push-off force that propels you through each stride.
The quadriceps, specifically the muscles on the front of your thigh, primarily push your body upward and can actually act as a brake by resisting forward momentum. The gluteus maximus, despite being the largest muscle in your body, functions mainly to decelerate your swinging leg before it contacts the ground rather than driving you forward. This means your training should prioritize posterior chain strength (hamstrings, calves, hip muscles) over quad-dominant exercises if acceleration is the goal.
Build Relative Strength With Squats
Raw strength relative to your body weight is one of the strongest predictors of acceleration. A study of competitive athletes found a significant negative correlation between relative squat strength and both 10-yard and 40-yard sprint times: the stronger you are pound for pound, the faster you accelerate. Athletes who could squat at least 2.1 times their body weight had significantly faster 10-yard and 40-yard times than those squatting below 1.9 times body weight.
If you currently squat less than 1.5 times your body weight, building toward that 2x threshold will likely produce noticeable improvements in your first-step quickness. Back squats, front squats, and trap bar deadlifts all build the type of lower body strength that transfers to sprinting. Focus on progressively increasing your max with sets of 3 to 5 reps rather than chasing high-rep endurance work.
Plyometrics for Explosive Ground Contact
Plyometric training teaches your muscles to absorb and redirect force faster. When your foot hits the ground during a sprint, there’s a brief moment where your muscles stretch under load before contracting to push you forward. This transition, called the amortization phase, is the key to plyometric performance. The shorter this phase, the more efficiently stored energy converts into propulsion. One of the primary goals of plyometric training is reducing this rebound time.
For acceleration specifically, prioritize exercises with a horizontal component over purely vertical ones. Broad jumps, horizontal bounding, and lateral bounds all train force production in the direction that matters for your first several steps. Zigzag jumps build multi-directional explosiveness that translates well to field sports. Vertical jumps (box jumps, depth jumps) still have value, but they primarily develop the ability to push force straight down, which becomes more relevant at top speed than during initial acceleration.
Start with 3 to 4 sets of 5 to 8 reps per exercise, resting fully between sets. Plyometrics are about quality, not fatigue. If your jumps start getting shorter or slower, you’re done for the day.
Resisted Sprinting With Sleds
Sled pushes and sled tows are among the most specific exercises for acceleration because they force you to maintain forward lean and produce horizontal force under load, mimicking the exact demands of the first phase of a sprint. The key variable is choosing the right weight.
Research suggests the optimal sled load for maximizing power output is one that reduces your top sprint speed by about 50%. For most people, this works out to roughly 57 to 73% of body weight on the sled, though the exact number varies by individual. Defining load as a percentage of velocity loss is more precise than simply loading a percentage of body weight, because surface friction, sled type, and individual speed all affect how heavy any given load feels in practice. If you don’t have access to velocity-tracking tools, start with about 60% of your body weight and adjust. You should be able to sprint with effort but not grind to a crawl.
Sprint distances of 10 to 30 meters with full recovery between reps (2 to 4 minutes) keep the training focused on acceleration rather than conditioning.
Sprint Training Changes Your Muscle Fibers
Your muscles contain a mix of slow-twitch fibers (built for endurance) and fast-twitch fibers (built for explosive power). High-intensity sprint training actually shifts this ratio. One study found that after a period of sprint training, the proportion of slow-twitch fibers decreased from 57% to 48%, while fast-twitch fibers increased from 32% to 38%. This fiber type transformation means your muscles physically adapt to produce force more rapidly, giving you a biological foundation for faster acceleration over time.
This adaptation requires genuinely maximal efforts. Jogging, tempo runs, and longer sprints at 70 to 80% intensity won’t trigger this shift. You need short, all-out efforts of 10 to 40 meters with complete rest between reps.
Using a Warm-Up Trick Before Competition
Post-activation potentiation is a temporary boost in muscular performance that occurs after a high-intensity contraction. Performing a few explosive plyometric movements before a sprint event or game can acutely enhance your acceleration, as long as you allow adequate recovery between the warm-up activity and the performance, typically 3 to 8 minutes. Loaded plyometric exercises may produce different effects than unloaded ones, so experiment during practice to find what works for your body. A few heavy broad jumps or loaded squat jumps 5 to 7 minutes before your event can prime your nervous system to recruit more muscle fibers on demand.
Putting It Together
A practical weekly structure for improving acceleration might include 2 heavy lower body strength sessions (squats, deadlifts, hip thrusts), 2 sprint or sled sessions focused on distances under 30 meters, and 1 to 2 plyometric sessions that can be paired with either. The strength work builds your force-production ceiling, the plyometrics teach you to apply that force quickly, and the sprint work integrates everything into actual acceleration mechanics. Prioritize posterior chain exercises over quad-dominant movements, keep sprint reps short and fully recovered, and track your progress with timed 10-yard or 20-yard dashes every few weeks.