Understanding Growth Spurts and How Physical Development Affects Performance

Understanding Growth Spurts and How Physical Development Affects Performance

Chris Johnson

By Chris Johnson

Last Updated on 5 April 2026


In my experience in grassroots football, one of the most interesting yet hard to understand parts of youth development is the period when children begin to grow rapidly. I’m sure almost every coach has watched a graceful young footballer suddenly look as though they are running in someone else’s body, or seen a smaller teammate shoot up in height seemingly overnight and dominate with a presence they didn’t have a month earlier. These changes can be dramatic and can unsettle children who have always relied on their coordination, confuse parents who worry their child is “going backwards” and challenge coaches who may not immediately recognise what is happening. Yet growth spurts are as natural as anything in a young footballer’s journey.

They arrive at different times, unfold at different speeds and affect each child in unique ways.

The more the adults around them understand this, the easier it becomes to guide players through a phase that can feel a bit weird but ultimately leads to enormous physical development.

What makes growth spurts so disruptive is how quickly they can alter a young player’s sense of their own body. In early adolescence, the body suddenly begins to stretch and strengthen at a rate it has never experienced before. Bones lengthen before muscles have fully adjusted, balance shifts and movements that once felt instinctive can become really clumsy and uncertain. A child who could dribble out of tight spaces with ease may suddenly find themselves overrunning the ball. A player who never thought twice about their first touch may feel as though every pass arrives with an unexpected bobble.

These changes can ripple into almost every technical aspect of the game. Passing accuracy can dip because the timing through the ball isn’t there. Dribbling may feel heavier and less precise as the centre of gravity shifts. First touches, which are usually a reflection of the body working in sync, can become more unpredictable when limbs are growing at different rates. This doesn’t mean the player has suddenly forgotten how to play, it simply means their brain and body are temporarily out of kilter. The way the brain processes the movement of the body needs some recalibration, and until that process is complete, the game can feel much more difficult. Without understanding this, adults may assume a child has lost focus or motivation, when in fact they are working harder than ever just to feel balanced.

Speed and agility are also affected in ways that can surprise everyone involved. It’s easy to assume that getting taller will automatically mean getting faster. In reality, rapid changes in limb length, muscle tightness and balance often have the opposite effect. Players may feel slower or find their acceleration is less sharp and pronounced. Their stride pattern changes before their strength has caught up and running can feel foreign or uncomfortable. Agility often suffers most of all with turning quickly, shifting direction and reacting to the movement of others becoming more challenging when the body’s dimensions are changing faster. None of this is permanent, but it can unsettle a player who is used to moving freely and confidently.

Alongside coordination and speed, strength development also undergoes a significant shift during this time. Growth spurts can bring increases in muscle mass, but muscles don’t always grow at the same rate as bones. This mismatch can cause tightness, stiffness and general soreness particularly around the knees, hamstrings and lower back. Many adolescents experience flare-ups like Osgood Schlatter’s, a common knee condition linked to rapid growth and actually named after a famous footballer. It isn’t dangerous, but it can be really uncomfortable and can limit a child’s ability to train or play. These physical sensations are new for most young people and without guidance they can become anxious or feel they are letting the team down if they speak up about pain.

Fatigue becomes another part of this growth period. The body uses huge amounts of energy during rapid development and children may tire more quickly, lose stamina or struggle to recover between sessions. A young player who previously loved doing three or four football activities a week may suddenly look drained, distracted or even short tempered. While it’s tempting to put this down to attitude, it’s often just biology. Asking children to push through fatigue because “they used to manage it fine” places them at risk of injury and chips away at their enjoyment of the game. Recognising that growth takes a physical toll helps adults adapt their own expectations and protects players from unnecessary pressure.

Emotionally, growth spurts can be just as challenging. Adolescence is already a period of heightened feelings, and when you add the frustration of no longer being able to do things that once felt easy, confidence can take a hit. A child who suddenly feels clumsy may become hesitant or overly cautious. Others might react with irritation, embarrassment or self doubt. The worst thing adults can do at this stage is criticise them for things they simply can’t control. A calm understanding helps players keep some perspective and they need reassurance that what they’re experiencing is normal, temporary and a part of every footballer’s journey.

Communication becomes particularly important. Parents often notice changes before coaches do, whether it’s a sudden increase in appetite, disrupted sleep patterns, a rapid change in height or signs of tiredness. Sharing these observations with coaches means adjustments and allowances can be made and knowing a player is mid-growth spurt might lead a coach to simplify tasks, reduce the physical load or focus on confidence building activities rather than demanding perfection. This small shift prevents players from feeling judged for performances that don’t reflect their actual ability.

While growth spurts can feel disruptive, they also lay the foundations for future strength and athleticism. Once the awkward phase passes, players often emerge with more power, better physical presence and a greater capacity to compete. They may strike the ball with more power, win 1 vs 1 duels they previously lost or cover the pitch with greater authority. Coaches may prepare players by focusing on mobility exercises, age appropriate strength training and flexibility work to help ease the strain of rapid growth. Supporting the physical side goes hand in hand with supporting the mental one.

The biggest trap adults fall into is comparing players who mature at different rates. Within any squad there will be early developers, late developers and everyone in between. Some children surge ahead physically at twelve or thirteen, dominating games simply because of their size.

Others might not catch up until much later, compensating for their smaller stature by developing quicker decision making, sharper technique or a better understanding of the game. Neither path is better or worse, they are simply different. Early physical advantage doesn’t guarantee long term superiority and temporary struggles during a growth spurt say nothing about future potential. The best development environments understand this and refuse to judge children solely on size or momentary performance.

We know that the differences in physical maturity can influence player positioning too. A player who grows quickly might be shifted into a more physically demanding role because it suits them and the team at that moment, but that doesn’t mean it will suit either in a year’s time. Another player who remains smaller might develop exceptional technical habits simply because they had to find other ways to keep the ball moving to compete. The coaches who view growth as a fluid process can keep positional development flexible, ensuring children continue to experience a range of roles and don’t become defined by a temporary stage of their physical development.

Peer comparisons can create emotional challenges of their own. Children notice when teammates shoot up in height or when others seem to breeze through a period they themselves find difficult. Those who grow early may feel pressure to dominate whilst those who grow late may feel left behind. Both mindsets can create unnecessary stress and adults should be reminding young players that their bodies are developing exactly as they should and that football is a long term journey, not a race determined by who reaches physical maturity first. The team environment plays a role in helping players cope with these changes. Encouraging teammates to support, not tease, those going through awkward phases creates a sense of safety. A healthy team culture values effort and progress over the temporary setbacks of physical transition. When players know they are not going to be ridiculed for a misplaced pass or an awkward stumble they relax and continue to enjoy the game despite the challenges of their changing bodies.

Not all children experience major disruptions during growth spurts. Some adapt quickly and hardly miss a step while others may struggle for months or even longer. This variation is entirely normal and the key is patience. Understanding how growth affects coordination, strength, fatigue and mood helps adults stay measured and avoids an overreaction to mistakes and temporary dips in performance. There will be days when everything looks smooth again and others when a player seems right back at the start. We know that progress is rarely linear.

Growth spurts may disrupt technique, confidence and performance for a while, but they also unlock the potential for future strength and speed that will shape the player for their years ahead. When adults focus on the bigger picture rather than momentary awkwardness, players feel valued, supported and understood and when that happens they emerge from these unpredictable phases more capable and more confident.

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