What the core does in a match
The abdominal, back and hip muscles form one functional unit. It is the foundation of almost every action on the pitch: stopping abruptly, turning, jumping, holding your body between opponent and ball in a duel.
The decisive connection runs downwards. If the core gives way on a landing or a change of direction, the pelvis tilts, and with it the knee ends up in a position it was not built for. That is exactly why core work appears in virtually every established prevention programme. How good the evidence for those is can be found in the effectiveness of prevention programmes.
Two things are often misunderstood here.
Core stability is a question of control, not of strength. It is not about how long someone holds a plank but whether they keep the position under disturbance. That is why every exercise below has a progression through movement.
Holding alone is not enough. Working only statically trains exactly what never occurs in a match. In football the core gets disturbed: by opponents, by the ground, by your own rotation.
Six exercises
Übung 1: The plank
Set-up
No equipment, on grass or a hall floor. Elbows directly under the shoulders.
Sequence
The body forms a line from head to heels. Hold 20 to 30 seconds, three sets.
Coaching point
The back does not sag and the hips do not lift. The eyes stay on the floor, otherwise the neck tips back.
Progression
Lift one leg at a time without letting the hips rotate. Anyone wobbling here has been holding still for too long.
In detail
performing the plank correctly.
Übung 2: The side plank
Set-up
On your side, elbow under the shoulder, legs straight and stacked.
Sequence
Shoulder, hip and foot form a line. 20 seconds per side, three sets.
Coaching point
The pelvis does not drop. The moment it sags, the set is over — even after eight seconds.
Progression
Lower and raise the hip slowly, or lift the upper leg.
Why
The lateral core holds the body in duels and during changes of direction.
Übung 3: Nordic hamstring
Set-up
Kneeling, a partner fixes the lower legs. Soft surface.
Sequence
Lean forward slowly with a straight body, as far as stays controlled, then catch yourself with the hands. Three sets of five.
Coaching point
The movement is braked, not dropped. The last few centimetres are the ones that count.
Progression
Move the point where the hands catch you further forward week by week.
Careful
Muscle soreness after the first session is almost guaranteed. Do not introduce it two days before a match. Details on the exercise.
Übung 4: Single-leg stance with disturbance
Set-up
One leg, knee slightly bent. A partner stands alongside.
Sequence
Stand for 30 seconds while the partner pushes lightly against shoulder or hip — irregularly, not in rhythm.
Coaching point
The knee stays over the foot and does not collapse inwards. That is the entire point of the exercise.
Progression
Eyes closed, or on a soft surface, or with a ball being passed at the same time.
Why
This is the closest to control in a match. More on the execution.
Übung 5: Lunge with rotation
Set-up
No equipment, enough room forwards.
Sequence
Lunge forwards, at the lowest point rotate the upper body towards the front leg, then come back up. Ten per side.
Coaching point
The front knee stays behind the toes and does not fall inwards. The rotation comes from the thoracic spine, not the hip.
Progression
With a ball in outstretched arms, later with a medicine ball.
Why
Combines leg stability with rotation — exactly the combination needed for striking the ball and changing direction.
Übung 6: Single-leg bridge
Set-up
On your back, one foot planted, the other leg straight in the air.
Sequence
Lift the pelvis until torso and thigh form a line. Ten repetitions per side.
Coaching point
The pelvis stays level. If it tilts to the free side, the glutes are still too weak — then work with both legs.
Progression
Raise the planted foot, or hold for two seconds at the top.
Why
The glutes stabilise the pelvis. If they are weak, the lower back takes over.
How much and when
Twice a week, eight to ten minutes. That is the order of magnitude prevention programmes work with. More adds little, less does not work.
In the warm-up, not at the end. At the end of a session players are tired and execution gets sloppy — and sloppy execution trains the opposite of stability. That is exactly how the 11+ is built.
Technique before duration. 20 clean seconds beat 60 sloppy ones. The set ends when the position breaks, not when the clock runs out.
Progress in this order. First hold the position, then add movement, then extend the hold. Not the other way round.
By age group
Up to under-11. No separate core training. Stability at this age comes from variety: climbing, balancing, wrestling, hopping. A child balancing along a bench is training exactly what adults need a plank for.
Under-13 and under-15. Now it makes sense, with body weight and in a playful wrapper. Exercises 1, 2, 4 and 6, short sets, partner forms. During the growth spurt the capacity to take load is temporarily lower — more on that in growth phases in training.
From under-17 and senior football. The full programme including the Nordic hamstring and the lunge with rotation. This is where the work pays off most clearly, because sprinting and landing loads are highest.
Common mistakes
- Planks only. The front chain alone does not make a stable core. Without lateral and posterior work an imbalance develops.
- Sets that are too long. Beyond 30 seconds hardly anyone holds the position cleanly. What follows is compensation.
- Nobody watching the execution. Core exercises look dull from the outside, which is exactly why nobody looks. Half the effect sits in the correction.
- At the end of the session. Tired players show poor technique. Putting it first is less convenient in the running order and considerably more effective.
- Nordic hamstring before a match. The soreness arrives reliably. Always introduce it early in the week.
Core training in Coach OS
The hard part about prevention work is not the exercise but the regularity across a season.
In the team settings you set up age group, number of players, training times and equipment once. From that, Coach OS periodises the season across eleven main categories with six to fourteen sub-categories each, weighted by age and playing level. Stability work then appears in the warm-up regularly instead of disappearing in the week that gets tight.
The exercise database holds over 1,244 animated drills, filterable by category, age, number of players, equipment and focus. Every session can be exported as a PDF, for the assistant coach or printed out at the pitch.
Coach OS suggests. The coach decides. Always.
Conclusion
- Core stability is a question of control, not strength. What matters is the position under disturbance, not the hold time.
- Twice a week, eight to ten minutes, in the warm-up rather than at the end.
- Front, lateral and posterior chains belong together. Planks alone are not enough.
- Up to under-11 no separate core training is needed, only variety.
- The set ends when the position breaks — not when the clock runs out.