About this trial
The purpose of this randomized controlled trial is to compare the effects of Nordic Hamstring Exercise (NHE) and Blood Flow Restriction-assisted Nordic Hamstring Exercise (BFR-NHE) on hamstring muscle strength, muscle morphology, and functional performance in elite adolescent female pole vaulters. Thirty-six athletes aged 12-18 years will be randomly assigned to a Nordic Hamstring Exercise group, a Blood Flow Restriction-assisted Nordic Hamstring Exercise group, or a control group. Intervention groups will participate in supervised exercise training three times per week for eight weeks, while the control group will continue routine sports training. Outcomes will be assessed before and after the intervention period.
Eligibility criteria
Qualifiers
Female athletes aged between 12 and 18 years.
Elite pole vault athletes actively participating in organized training and competition.
Minimum of 1 year of regular pole vault training experience.
Participation in regular training at least 3 times per week.
Disqualifiers
Any lower extremity musculoskeletal injury within the previous 6 months.
Previous hamstring muscle surgery.
Current pain or injury limiting sports participation.
Neurological disorders affecting movement or balance.
Trial design
Treatments tested in this trial
- Nordic Hamstring Exercise
- Blood Flow Restriction-Assisted Nordic Hamstring Exercise