None listed
Conditions
Interventions
Others(Eccentric strengthening exercise for the hamstrings(Nordic hamstring curl)) : NHC training was conducted using a Keiser assist machine to provide smooth and consistent resistance throughout the
Sponsors
Dongshin University
Eligibility
Sex/Gender
Male
Inclusion criteria
Inclusion criteria: 1) Overhand pitchers 2) Excessive external rotation range of motion in the shoulder joint 3) No injuries to the lower extremities (especially the hamstrings) or shoulder joint within the past six months 4) No eccentric training that stresses the hamstrings within the past month 5) No history of musculoskeletal surgery in the lower extremities or shoulder joint 6) No pain or stiffness in the lower extremities or shoulder joint after the pitching motion
Exclusion criteria
Exclusion criteria: 1) Sidearm or underhand pitchers 2) Neurological damage to the lower extremities or shoulder joints 3) Engaging in sports other than baseball training
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in the mechanical properties of the hamstrings(changes in biomechanical properties, F index);Changes in the mechanical properties of the hamstrings(changes in biomechanical properties, S index);Changes in the mechanical properties of the hamstrings(changes in biomechanical properties, D index);Changes in the mechanical properties of the hamstrings(changes in biomechanical properties, C index);Changes in the mechanical properties of the hamstrings(changes in Viscoelastic properties, C index);Muscle strength;Flexibility;Range of motion;Pitching performance ability(Ball Velocity) | — |
Secondary
| Measure | Time frame |
|---|---|
| Pitching performance ability(Ball Spin) | — |
Countries
Korea, Republic of
Contacts
Public ContactYejun Han
Dongshin University
Outcome results
None listed