The Deceleration
Feedback Loop:
How Athletes Get
Slower Without
Anyone Noticing
When an athlete can’t handle high-intensity braking, the problem doesn’t stay the same size. It grows. I learned this the hard way with my first real team. This is what it looks like and how to break it.
Sometimes You Think
You Know What
You’re Doing.
Sometimes you think your way is correct and it can’t possibly not work. Sometimes in life you learn that you are wrong.
I was a young coach. First real team. The Luge B team out of the Olympic Oval in Calgary, under Jason Poole. Jason was a jolly and fun guy — until you screwed up. Then he could put you in a boiler room of interrogation and keep turning up the heat. He expected a damn good reason why you were doing things to his athletes. Always a reason. Always.
I’d earned the placement by surviving months of being grilled by Matt Jordan, Jason Poole, and Scott Maw. The most demanding coaches I’d ever encountered. They dealt exclusively in high performance. That thin slice of athletic training right on the edge of what’s possible for humans to attain. I’d passed their early tests. Now it was time to see if I could actually make someone better.
So I went to work. And to my surprise, most of the athletes made amazing progress. One guy went from a 70kg power clean to 100kg. It was extraordinary. Like Midas, everything I touched turned to gold. The young superstar strength coach was making a name for himself.
Everything was good.
Except one thing.
One athlete got worse. Way worse. And at the time I didn’t know why and I couldn’t fix it.
That’s what I want to talk about. The athlete who gets worse. Why it happens. And why the harder you push, the worse it gets.
But first. Maybe we’re talking about your kid.
This Is How
It Starts.
Your athlete begins training with a team or a new coach. The early results are exciting. They get stronger. Their body starts to change in ways you haven’t seen before. They’re more physical in games — outrunning players they didn’t used to. Their confidence skyrockets. They finish that first season on cloud nine.
You double down. They’re moving up a level. Everything points forward.
Somewhere in the next season, or maybe the one after, something changes.
Your athlete quits on a 50-50 ball one game.
Nothing serious. Just something you’re not used to seeing.
As the season goes on, other things appear. Even though the performance coach swears they’re getting faster, they actually look slower. You fight it. You tell yourself they’re just tired from a big tournament weekend. But your eyes tell you something different.
You start watching practice more closely. And they look sharp there. But it doesn’t transfer to games.
Then the little injuries start. A hamstring that gets slightly pulled in the third game of a weekend tournament. Hip tightness. Foot pain that comes and goes. Then a growth spurt — and now everything is just worse. Nothing obvious has happened. They’re training hard, doing extra skills sessions, hitting the weight room. But nothing is working.
This is the feedback loop.
And once you’re stuck in it, it feels like there’s no way out.
There is. But first you need to understand what’s actually happening. Because I promise you, it isn’t what you think.
What’s Actually
Happening Inside
the Loop
My athlete on the Luge B team wasn’t getting worse because he wasn’t trying. He wasn’t getting worse because his program was wrong. He was getting worse because his body had encountered a load it couldn’t manage — and had made a completely rational decision to protect itself from ever encountering that load again.
His nervous system was smarter than I was at the time.
Here’s the cascade, step by step:
High Deceleration Load Hits an Unprepared Athlete
Game speed. Full intensity. A braking demand that exceeds what the athlete’s tissue and neuromuscular system can manage safely. The forces are real — up to 5.9 times bodyweight in milliseconds. The preparation isn’t there to match them.
The Body Registers a Threat
Muscular tension and eccentric loads exceed what the hamstring, quad, and surrounding structures can safely absorb. The athlete may not feel a pop. They may not get injured in that moment. But micro-trauma accumulates. The body registers the load as dangerous.
Movement Changes. The Athlete Doesn’t Know It.
This is the step coaches misread most often. The nervous system responds to threat by changing movement patterns, below conscious awareness. The athlete doesn’t decide to move differently. They start braking earlier. They use less aggressive foot placement. They round off sharp cuts. They check out on 50-50 balls. From the sideline, this looks like a mental problem: effort, confidence, desire. It’s not. It’s a physical protection response.
The Athlete Avoids Exactly What They Need
Lower speeds and softer cuts mean the athlete is no longer exposing their deceleration system to the loads it needs to adapt to. The protective behaviour simultaneously removes the training stimulus that would build the capacity to handle those loads safely. They are avoiding the thing they need most.
The Gap Grows Wider
Without progressive loading, deceleration capacity doesn’t stay the same. It decreases. The mismatch between what games demand and what the athlete can provide grows. When they do encounter a high-intensity braking scenario — a big game, defensive pressure, a sharp cut — the gap is now larger than when the loop started.
↻ The cycle repeats. And compounds every time.
Drabik defines speed as “the ability to perform movements in the shortest time possible” — and explicitly includes “slowing down before you change direction” within that definition (Children and Sports Training, Speed Chapter). Deceleration is not the opposite of speed. It is speed applied in reverse, through the same nervous system, with the same coordination demands. Reaction time — the nervous system’s ability to recognize a braking stimulus and fire the correct response — is a trainable quality that depends on age and systematic exposure. The feedback loop exploits this directly. When the nervous system hasn’t been trained to recognize and respond to high-intensity braking stimuli safely, it responds by avoiding them. The loop is not a motivation problem. It is an untrained reaction time problem — and it is addressable through exactly the kind of progressive deceleration exposure described in the next section.
Each iteration of the loop increases the mismatch, deepens the protective behaviour, and moves the athlete further from the braking capacity they need. Performance plateaus or declines. Injury risk rises. The athlete looks like they’ve stopped developing. The problem is structural, not motivational.
That was my athlete on the Luge team. His body had made a completely logical decision to protect itself. I was pushing harder. He was declining faster. I was making things worse without understanding why.
What You See vs
What’s Happening
The cruelest part of the feedback loop is that almost every visible symptom points coaches and parents toward the wrong explanation. The harder you push in the wrong direction, the worse it gets.
| What You See | What’s Actually Happening |
|---|---|
| Athlete quits on 50-50 balls they used to chase | Nervous system protecting tissue from overload through movement avoidance |
| Athlete looks slow despite training harder | Protective deceleration behaviour reducing effective speed in game conditions |
| Sharp in drills but flat in games | Drill speed doesn’t trigger the protective response. Game speed does. |
| Recurring soft tissue injuries despite rest | The mechanical mismatch hasn’t been addressed. The load returns. The tissue fails again. |
| Lost their edge after a growth spurt | Mass increased, deceleration capacity didn’t scale. The mismatch triggered the loop. |
| Dropping in competitive ranking without obvious cause | Peers are developing game-speed braking capacity. This athlete is in a degradation cycle. |
Sharp in drills, flat in games. This pattern gets labelled as mental: focus, intensity, game-day nerves. It’s almost never mental. Drill speed simply doesn’t generate the braking forces that trigger the nervous system’s protection response. Game speed does. The athlete isn’t different in games. Their body is responding to a different stimulus.
How to Break
the Loop
The feedback loop is not permanent. It can be interrupted and reversed. But it requires patience and a willingness to address the root cause rather than the symptoms.
More sprints won’t fix it. More skills sessions won’t fix it. More conditioning won’t fix it. The problem is deceleration capacity. The solution is deceleration training. Everything else is noise.
Name the Actual Problem
Stop treating performance plateau as a motivation problem or a fitness problem. Assess deceleration capacity directly. Build a training plan around closing that specific gap. The diagnosis has to be right before the intervention can work.
Re-introduce Braking Load Progressively
The nervous system needs to learn that braking forces are manageable. This happens through carefully calibrated progressive exposure — starting at velocities the athlete can handle and building toward game-speed demands over weeks, not days. Jumping straight to game speed continues the loop.
Build Eccentric Capacity in Parallel
While the deceleration skill is being rebuilt on the turf, the underlying tissue capacity needs developing in the gym. Eccentric hamstring strength, reactive lower leg stiffness, pre-activation timing. These are the physical qualities that change what the nervous system is willing to expose the athlete to.
Coach Mechanics Explicitly
The protective movement patterns that developed during the loop become habitual. Breaking the habit requires explicit coaching of foot placement, shin angle, and centre of mass control at every speed level until the new pattern is the default, not the conscious effort.
Be Patient
Breaking the loop feels slow at first. The athlete is doing less high-intensity work, not more. Results may not be immediately visible. This is where most programs quit — the short-term incentive points toward more volume and more intensity. The athletes who invest in the process are the ones showing up consistently two and three years later while their peers are managing recurring injuries.
“The athlete who can tolerate high deceleration loads doesn’t just get hurt less. They get faster. Because their nervous system isn’t protecting them from their own speed anymore.”
— Greg Almon, Jungle Athletics CalgaryThis Isn’t Rare.
It’s on Every Team.
The deceleration feedback loop isn’t a phenomenon unique to high-performance athletes who’ve pushed past their limits. It’s happening across every level of youth sport, on every team, in every city. It’s happening to athletes who are being well-coached in every other respect.
The athletes trapped in the loop aren’t lazy or unmotivated. Their bodies are doing exactly what bodies are designed to do — protect tissue from loads it can’t safely manage. The solution isn’t to push harder through the protection signal. It’s to build the capacity that makes the protection signal unnecessary.
I didn’t know that when I was working with the Luge B team. I was pushing harder. He was getting worse. I thought the problem was effort. It was load management.
That’s the lesson I’ve carried into every athlete relationship since. When someone is declining for no obvious reason, the first question isn’t “how do we push harder?” It’s “what is the body protecting itself from — and why?”
Answer that question first. Everything else follows.
Development System Explained
If this article is your first introduction to Jungle Athletics, the deceleration feedback loop is one piece of a larger training system. Before booking, most parents find it useful to understand how the Battery Model, sensitive periods, and injury prevention all connect — and why addressing the root cause produces results that more training volume doesn’t.
Sharp in Practice.
Flat in Games.
We Know Why.
Book your athlete’s Free Game Speed Analysis. We’ll assess deceleration capacity, movement patterns, and whether the feedback loop is a factor. Then we’ll tell you exactly what needs to change.
Book Your Free Athlete Analysis
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