Longitudinal changes in hamstring muscle morphology in adolescent competitive alpine skiers are sex-specific: a 4-year cohort study

Key Points

• Explore how hamstring muscle size develops over time in adolescent alpine skiers, focusing on sex differences and injury implications.
• Conducted a 4-year cohort study
• Measured hamstring muscle size over time
• Compared hypertrophy between male and female skiers
• Hamstring size increased in all participants
• Males showed greater hypertrophy than females
• ACL-injured females had smaller semitendinosus muscle size