Replication Data for: Verreydt et al. (2025) - Medial gastrocnemius and semitendinosus muscle growth in typically developing children: Longitudinal reference growth trajectories

This is a longitudinal dataset consisting of macroscopic muscle parameters of the medial gastrocnemius and semitendinosus of typically developing children (aged 0.39-11.76 years at baseline). Macroscopic muscle parameters were assessed through 3D freehand ultrasound and included both muscle morphology (muscle volume, anatomical cross-sectional area, muscle-tendon unit length, muscle belly length, tendon length) and muscle composition (echo-intensity).