Introduction

The term powerpenia has recently emerged as a clinically relevant construct to describe age-related losses in skeletal muscle power, highlighting its role in functional decline and disability among older adults.1 Muscle power, defined as the product of force and velocity, is more strongly associated with physical function than muscle strength alone.2 3 While this work has advanced our understanding of power as a critical determinant of health span, the discussion has been predominantly framed within the context of older populations. This editorial focuses on the paediatric onset of low muscular power, a modifiable risk factor with lifelong implications for musculoskeletal health.1

We propose a shift in perspective towards the prevention of paediatric powerpenia. Just as sarcopenia4 and dynapenia5 have long been used to describe the trajectory of muscle health across the adult life course, the construct of paediatric…