Understanding Peak Height Velocity (PHV)

Author: Franz Studer - Sports Coach

Why This Matters

This article is important reading for athletes, parents, and coaches because it explains why so many young sportspeople experience ongoing aches, pains, and injuries during adolescence—and why these problems should not simply be dismissed as weakness, poor effort, or “part of sport.” Understanding PHV helps everyone recognise that rapid growth can temporarily affect coordination, strength, recovery, and injury risk, meaning training loads, expectations, and competition demands must be managed intelligently. When athletes listen to their bodies, parents support recovery, and coaches adapt training with patience and care, young players are far more likely to stay healthy, enjoy their sport, and develop into stronger, more resilient athletes in the long term. The recommendations in this article should therefore be treated not as optional advice, but as essential guidance for protecting growing bodies and sustaining sporting performance.

What is PHV?

Peak Height Velocity (PHV) is the period in your teenage years when you grow the fastest in height. For most girls, this happens between 11 and 14 years old, but for some it cases a little earlier or later. During PHV, your bones, muscles, and tendons are changing quickly, which can affect your coordination, strength, and performance in sport.

Think of it like upgrading your body’s “hardware” — everything is getting bigger and stronger, but it takes time for your brain and muscles to learn how to work together again.

Why PHV Matters in Sport

• Training impact – Your body may feel awkward or uncoordinated for a while.
• Injury risk – Growth plates and tendons are more vulnerable.
• Performance changes – You might feel slower, less powerful, or more tired, even if you’re training hard.
• Long-term benefits – Once your body adapts, you can build more strength, speed, and endurance.

Sport-Specific Performance Limitations During PHV

Sport / Possible Limitations During PHV / Why It Happens

• Swimming / - Stroke timing feels “off” (Reduced feel for the water) - Shoulder soreness / Arm length changes alter stroke mechanics; rapid growth can strain shoulder joints and rotator cuff muscles.
• Hockey / - Slower reaction time (Reduced agility and balance) - More muscle soreness after games / Leg length changes affect stride timing; coordination temporarily decreases; hips and knees under extra stress.
• Rowing / - Difficulty maintaining rhythm (Lower back tightness) - Grip strength feels inconsistent / Rapid trunk and arm growth changes leverage; spine and core muscles adapt to new length-tension relationships.
• Track & Field / - Sprint form feels awkward (Jump timing is inconsistent) - Shin splints or knee pain / Limb length changes affect stride mechanics; tendons and muscles under more load; growth plates sensitive to impact.

Tips for Athletes Going Through PHV

• Be patient – Temporary dips in performance are normal.
• Focus on technique – Good form now prevents bad habits later.
• Prioritise recovery – Stretching, sleep, and nutrition are key.
• Communicate with coaches – Let them know how your body feels.
• Strengthen supporting muscles – Core, hips, and shoulders help stabilise your growing frame.

5. Summary

PHV is a natural and important stage in your athletic journey. While it can feel frustrating when your body doesn’t respond the way you expect, it’s also the time when you’re building the foundation for future strength, speed, and skill. With patience, smart training, and good recovery, you’ll come out of this phase stronger than ever.