Braking, Turning and Striking: It All Starts at the Hip

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By Pablo Dip - Método PD

Watch a player for ten seconds of a match. He brakes at full speed, turns ninety degrees, plants his foot, accelerates again and strikes across goal with his instep. In that sequence the hip went through deep flexion under load, internal rotation, external rotation and extension, all in under three seconds and with full body weight on top of it. No other joint in the body has to solve that many different problems in that little time.

And yet, when something breaks down, the pain almost never shows up at the hip. It shows up in the groin, the lower back, the knee, the hamstring. That is why this is probably the most misunderstood topic in a footballer's training.

What football demands from the hip

Two actions define the game, and both depend on the hip.

The first is the change of direction. A player performs around a hundred changes of direction between ninety and a hundred and eighty degrees per match, and each one requires significant deceleration before the turn. To brake, the hip has to flex deeply while bearing load. If that range is not available, the player brakes higher up, with a more upright torso, and the knee ends up absorbing the deceleration.

The second is the kick. The biomechanics here are beautiful and badly understood. Before striking, the player forms what is known as the tension arc: the hip of the kicking leg extends, the pelvis rotates back and tilts, and the torso rotates towards the opposite side. That position stores elastic energy across the entire anterior chain. The strike is nothing more than the release of that arc in two successive phases, transferring energy from the pelvis to the hip, the knee and finally the foot.

Translated: the power of a strike does not come from the quadriceps. It comes from how much arc you can form before releasing it. And the arc is determined by the hip extension and rotation available. A player with a closed hip has a short arc. He can compensate by generating more rotation from the lumbar spine, and many do for years, until the lumbar spine sends the bill.

The numbers

The evidence here is fairly consistent and worth knowing.

In one professional league, measuring 394 asymptomatic players, average values were 32 degrees of internal rotation in flexion and 38 degrees of external rotation. That is the territory a healthy professional operates in.

Now the number that matters. Players who had already suffered a time-loss hip or groin injury showed clearly lower values: 21 degrees of internal rotation against 28 in those who had never been injured, and 56 degrees of total rotation against 64. The gap is large and it is systematic.

The obvious question is whether the injury caused the loss of range or the other way around. Verrall studied exactly that in professional players and found that restricted hip range precedes chronic groin pain, which makes it a risk factor rather than a consequence. Along the same lines, players with less hip flexor range measured in pre-season went on to show a higher risk of muscle injury in that area.

Some context helps to size the problem: hip and groin injuries account for around fourteen per cent of all injuries in professional teams and up to a third in elite youth squads, and roughly half of elite players report symptoms in that area over the course of a season. This is not a niche problem. It is a problem affecting half the squad.

Mobility is not stretching

I will start with what I see on the pitch, because that carries the most weight for me. Hip mobility can be trained and improved. Over these years I have worked with players who gained real range, held onto it over time and transferred it to performance: better technique, better foot placement, better recovery between sessions. It is not a fixed quality you are born with and die with.

But it is gained one way and not another. It is gained through active work, producing the range with your own musculature, not hanging off a passive stretch waiting for the tissue to give way. That difference is not a methodological detail: it is the difference between gaining range you can actually use in a change of direction and gaining range that only exists on the treatment table.

Now, there is a nuance worth knowing, because it explains why some players hit a ceiling. In a radiological study of 120 professionals in the Spanish first division, 61.6% presented cam-type deformity at the junction between the femoral head and neck, against 11.6% in people without significant sporting activity. It is an extra piece of bone that forms during growth, associated with intense practice from a young age.

The figure is striking, but it has to be read properly, and this is where many people overreach. Having a cam does not mean being at your ceiling. The range differences attributable to that morphology are small, so small that in several studies they fail to exceed the threshold of clinical relevance. And when players with and without hip and groin symptoms were compared, those with less range had it independently of the presence of a cam. Translated: bone explains considerably less than that 61.6% suggests at first glance. Most of what limits a player is soft tissue, capsule, tone and, above all, motor control. All of that can be trained.

So what is the point of knowing it? Knowing when to stop. If a player insists on gaining degrees through aggressive passive stretching and a pinch appears in the groin when taking the hip into deep flexion with internal rotation, there is no more range to extract that way. Insisting irritates the labrum and teaches the player to steal movement from the pelvis and the lower back. The signal is to change strategy, not to push harder.

The real work, then, is twofold. Gaining range through active methods, which is where most of the margin for improvement sits. And on top of that range, building control: range the player can produce himself, under load and at speed. That distinction between available range and usable range is what separates a hip that performs from one that gets injured.

It is the same logic I apply to everything: mobility first, then control, then strength. Never the other way around.

A concrete case

Here is one, without names.

A player came to me with severely limited hip external rotation and flexion. On the pitch that translated into an expensive running pattern: he spent more energy to do the same work. The data confirmed it. GPS showed lower total distance covered per match and low sprint values, and he was not reaching peak speeds consistent with the level he was competing at or with the strength he showed in testing. That last point is what caught my attention: the engine was there, but it was not converting into speed. When a player is strong and still does not run fast, the problem is rarely strength.

We built a protocol of dynamic stretching and active mobility. Nothing exotic, but sustained: he did it for six to eight months. We reversed the situation and the numbers followed.

Two things I want to underline about that case. The first is the time frame. Six to eight months. Not six weeks. Mobility changes that hold are slow, and that is why almost nobody sees them: the work gets abandoned before they show up. The second is that all the work was active and dynamic. At no point was this a player hanging off a passive stretch waiting for results.

It is a single case and it does not replace a study. But when what you see on the pitch lines up with what the literature says, it is worth paying attention.

The chain: hip, knee and ankle

None of this happens in isolation, and this is the part I see overlooked most often.

If the hip does not rotate, something else has to. The knee is the first candidate, because it sits directly underneath and tolerates rotation very poorly. That is where dynamic valgus appears on landing and cutting, with everything that implies for the cruciate ligament.

If the hip does not flex enough to brake, the player looks for depth somewhere else. He looks for it in the lumbar spine or he looks for it in the ankle. And if the ankle has no dorsiflexion either, as I wrote in the previous article, the system runs out of options and the braking is resolved entirely by joints that were not designed for it.

That is why assessing the hip without looking at the ankle, or the other way around, gives an incomplete picture. In practice, when I find a restricted hip I usually find a restricted ankle on the same side, and vice versa. The chain organises itself however it can.

Two tests you can do at home

They do not replace an assessment, but they will give you useful information in five minutes. What matters is not the absolute number but the comparison between sides.

Test 1: seated internal rotation. Sit on a chair with your knees together at ninety degrees and your feet flat on the floor. Without moving the knee or lifting the thigh, take your foot outwards as far as you can. That is hip internal rotation. Do it with one leg and then the other, filming yourself from the front.

Test 2: hip extension at the edge of the bed. Lie on your back with your backside right at the edge. Bring one knee to your chest and hug it. Let the other leg hang freely. If the thigh of the hanging leg sits above hip level, your extension is limited. Repeat on the other side.

How to read the result. Look for clear differences between one side and the other, not minimal ones. Reliability studies on these measurements show that variations of more than ten degrees are needed before they can be considered real, so two or three degrees of difference mean nothing and are not worth chasing. If, on the other hand, you see an obvious asymmetry, especially on the standing leg, there is something to work on.

And if the restriction does not ease with mobility work after several weeks, or if a pinch appears in the groin when taking the hip into deep flexion with internal rotation, that is not a short muscle. That warrants a medical consultation, not more stretching.

What I take from this

Hip mobility is not trained so you can touch your toes. It is trained so the player can brake without compromising the knee, turn without stealing rotation from the lower back, and strike with the full arc available instead of half of it.

And it is trained actively, because range you cannot produce yourself is no use to you on the pitch. In my experience, that margin for improvement is far greater than most people believe, even in players who have been competing for fifteen years. What is missing is not more stretching. It is better work.