Case 2: Rapid Adolescent Growth and Loss of Movement Control

A 17-year-old elite youth athlete presented following a period of rapid growth, measuring approximately 40 cm within a 12-month timeframe. This growth phase was followed by unexplained nausea during running, declining coordination, and recurrent shoulder strain during training and competition.

Extensive medical investigations identified no structural pathology. Functional assessment, however, revealed marked instability during walking and running, reduced lateral trunk control, and poor load transfer through the hips. These deficits resulted in increased reliance on the shoulder complex during dynamic tasks.

Targeted neuromuscular activation and movement retraining were implemented, focusing on trunk control, hip engagement, and coordinated load transfer. Improvements in walking and running stability were observed immediately. Subsequent reassessment demonstrated altered throwing mechanics, with increased contribution from the trunk and lower body and reduced isolated shoulder effort.

Functional assessment of balance and movement control in an adolescent athlete following rapid growth, highlighting neuromuscular adaptation rather than structural injury.

This case highlights how rapid adolescent growth can lead to temporary mismatches between skeletal length, fascial tension, and neuromuscular control. Such adaptation lag may significantly affect coordination and performance in the absence of identifiable injury or structural pathology.

Clinical Practice: Heal Young Massage

Evidence-based remedial massage and movement rehabilitation services.