ColabSports Logo
PerformanceTesting

First Steps Win Matches

Colab Sports
Colab Sports
September 19, 2025

Vertical & horizontal FV profiling. Use CMJ/sprint profiling to locate deficits and predict change in jump/sprint with targeted work.

First Steps Win Matches
accelerationhorizontal force profilingmicrocycle designpersonalized coachingresisted sprint trainingreturn to playsoccer performancewearable validation

On certain afternoons the pitch sounds like paper being torn. Boots bite, air splits, and a player’s first three steps redraw the geometry of the game. Those steps are not only about speed; they are about direction, intent, and how effectively force travels into the ground and back into movement. Coaches call it acceleration. Analysts call it mechanics. Lately, a growing chorus has been sketching those steps with a clean, practical stencil known as the horizontal force–velocity profile, a way to see whether a player’s engine is more about push or more about glide, more about raw traction or late-breaking speed.1

The appeal is simple. If the first touch is the negotiation, the first strides are the contract. Horizontal force tells you how much of the athlete’s effort aims into the turf to send them forward, rather than bleeding into vertical bounce or side drift. Plot those forces against velocity and you begin to see a fingerprint: theoretical maximal force, theoretical maximal velocity, the power ridge between them, and how cleanly the athlete applies force as they speed up. It’s a portrait that travels well—from elite academies to public fields—because a maximal sprint, a few split times, and consistent setup can reveal enough to guide training with uncommon clarity.2

Streetlights For The Sprint

I like tools that turn chaos into conversation. The profile does that. It asks a direct question: what limits you first. Some players are force-poor—they can’t push hard enough into the ground early. Others are velocity-poor—they can’t unwind quickly enough once the scene opens. The test does not replace coaching feel; it listens for it, then adds a measuring stick. Wearables and radar have matured enough to make those numbers approachable on a training night, not just in a lab.3

And yes, there is poetry here. The profile is not merely math; it’s a different way of seeing effort. We usually praise the finish—the late sprint that looks cinematic. But many decisive plays are won in the hushed interval right after intention becomes action, where the line between stillness and motion is razor-thin. Measure that threshold with care and you earn a map of where to place your training bets.6

Field Notes From A Useful Lens

Profiles travel best when they are humble. The method works, but it asks for consistency: same footwear and surface, same warm-up, same start, same timing. Do that, and the picture you get from month to month is less fog and more contour. Do it sloppily and decimals pretend to be truths they are not. That is the pact. Keep the ritual clean and the signal gets louder; drift and the signal turns into noise.1

When the ritual is clean, the use cases multiply. Some staffs use the profile to decide who needs heavier resisted sprints and who needs free-running exposures. Others watch the seasonal curve—force holds when sprinting stays in the week, fades when it doesn’t. A few layer return-to-play judgments onto it, catching the subtle reluctance to push that lingers after a hamstring scare. None of this works as courtroom evidence; it works as conversation fuel, steering small decisions that add up to fewer false steps and more honest speed.45

Craft Over Hype

There’s a temptation to make the profile the whole story. It isn’t. Training that respects the athlete’s limiter can beat shotgun plans, but randomized trials also remind us that thoughtful non-profiled programs sometimes land just as well. The art is in the matching: athlete to drill, day to demand, season to stress. Profiles are a compass, not a destination.78

What gives me confidence in the compass is the scaffolding beneath it. The simple field method has been validated against force-plate gold standards. Replication work has tightened screws on assumptions and improved designs. In the hands of coaches who mind protocols, even smartphone-aided timing can yield trustworthy profiles, with GPS often stacking nicely against radar for the variables that matter.29

Letters To A Player Who Loves The First Five Steps

If you are that player—the one who savors the click between thought and stride—here is what the profile can offer. It offers a mirror that notices what your body already knows: that you break open space not just with speed but with how you aim your effort. It offers a dialogue with your training that is concrete without being crushing, gentle without being vague. It offers a way to notice small improvements, the kind that add a fingertip more separation in the channel and a heartbeat more calm in the box. It offers, at best, permission to be specific about the kind of fast you need right now.

  1. Keep the setup sacred and the data will return the favor
  2. Ask one clear question each cycle and let the answer shape the work
  3. Treat every decision like a prototype and iterate with care

Practice That Speaks Plainly

On a Tuesday, the team rolls out small sleds and a short runway on good grass. The force-poor athletes pull heavier for shorter distances, patient and deliberate, learning to lean and punch the ground. The velocity-poor athletes sprint unresisted for clean exposures, chasing crisp mechanics under low fatigue. Both groups finish hungry rather than melted. It looks simple because it should. Across a few weeks the early splits sharpen, and the video shows cleaner shin angles, quicker projection, fewer wasted frames. The numbers notice too—power rising for the force-poor group, top speed inching upward for the velocity-poor. Not a miracle, just faithful practice.65

The ritual of measurement belongs to the same day. Two passes per athlete, generous rest, nothing fancy. Shoes matched to surface, warm-up rehearsed, start method the same. Times captured. Profiles updated. An athlete scribbles a single line in the training diary: what I’m chasing next. That sentence is the smallest unit of culture. Keep it around and team language becomes less about slogans and more about craft.1

Design Principles Woven Into Sweat

Good programs live at the intersection of art, science, technology, and design. Art gives you metaphors that athletes feel in their bones. Science gives you guardrails and signal. Technology reduces friction in the field. Design insists that a protocol be legible and beautiful enough to repeat. The profile is an excuse to practice all four. You can craft a tiny interface for your team that shows just what matters—no more, no less. You can decide that a session is not finished until the protocol is documented and the next hypothesis is named. Culture is not a banner; it’s a checklist done well and a story told honestly.

Proof As A Quiet Companion

Evidence rarely shouts; it nods. Systematic work in soccer shows that horizontal force–velocity profiling relates to the sprints and cuts that decide matches, while also warning that methods must be standardized to travel between teams.1 Resisted sprinting tends to help the very moments profiling highlights—the short accelerations where plays are born—though effect sizes ebb and flow with context.45 Field-friendly methods have stood up well against lab-bound tools when handled with discipline.29 Individualized training based on a profile can shine, though not always beyond other thoughtful approaches, which is a healthy reminder to let athletes rather than analytics have the last word.87

The Week That Teaches Itself

Imagine a microcycle that breathes with purpose. Early in the week you solve the mechanical puzzle with heavy pulls for those who need them and floating sprints for those who don’t. Midweek you cue rhythm—skip patterns, wall drills, short buildups—so athletes remember what grace feels like when the legs are loud. Late in the week you touch the game: chases that start from silence, finishes that reward patience, small-sided moments where first steps are king. Throughout, your little interface shows a single bar for force, another for velocity, and a sliver of space where power peaks. The graph is not the goal; it’s a lantern for curiosity. Over a season those lanterns light a path an athlete can follow without you.

  1. Place two brief acceleration touches on light days to keep skill fresh without stealing recovery
  2. Log how each session felt alongside the times so data earns a voice not a verdict
  3. Keep the language of cues short so the body has room to answer

Home For The Profile In Daily Life

The best tools survive outside the training center. A player who understands their limiter will notice it in ordinary movement: in the way they rise from a chair, in the micro-accelerations of a commute, in the small choice to stride through a crosswalk or amble. That self-study, done lightly, turns the profile from report into ritual. You begin to see your day as a series of testable moments, tiny labs where intent meets ground reaction. That kind of noticing is trainable. It makes confidence less fragile because it is grounded in evidence that belongs to you.

Two habits anchor the transition from field to life. First, the brief weekly review: export your splits, update the profile, write a single sentence about the next nudge. Second, the designed micro-practice: a pair of easy buildups after a walk or a ride, the kind you could do in flats without spectacle. These are not workouts; they are whispers to the nervous system. Kept for months, they make fast feel familiar rather than foreign.1

Closing The Loop

When you treat training as a studio, the profile becomes a pencil, not a verdict. You sketch, you step back, you adjust the line. Science offers you a scale so that sketches from different weeks can be compared; technology helps you carry the scale in your pocket; design asks you to reduce clutter until only the essential remains. What’s left is a practice that respects how athletes actually change—rarely with fireworks, mostly with patient repetition guided by a few clear metrics and a lot of honest conversation. Those first steps will still sound like paper tearing. The difference is that now, you’ll know why.


References

  1. Lipčák A, et al. The use of horizontal force–velocity profile in soccer. 2025.
  2. Samozino P, et al. A simple field method for sprint force–velocity–power.
  3. Vantieghem-Nicolas L, et al. Wearable validity and reliability versus radar. 2023.
  4. Aldrich EK, et al. The effect of resisted sprint training on acceleration. 2024.
  5. Myrvang S, et al. Longitudinal effects of resisted and assisted sprint training. 2024.
  6. Morin J-B, et al. Simple method for computing sprint acceleration kinetics. 2019.
  7. Lindberg K, et al. Should we individualize training based on FV profiling. 2021.
  8. Jiménez-Reyes P, et al. Individualized training based on the FV profile. 2017.
  9. Stockdale RA, et al. MySprint and GPS reliability versus radar. 2025.
  10. Conceição F, et al. Force–velocity profiles in young football players. 2025.