Comparison Between Eccentric Hamstring Strength Training and Sprint-Specific Training on Muscle Hypertrophy, Strength, Power, and Sprint Performance in Club Sport Collegiate Athletes
University of Wisconsin, Madison
Summary
The purpose of this study is to compare the effects of an intensity-, volume-, and time under tension-matched eccentric hamstring exercise intervention with the Romanian deadlift (RDL) and the Nordic hamstring exercise (NHE) to a sprint-specific training program on hamstring muscle architecture, volume, sprint performance, strength, and power. Participants will be assigned to complete one of the 3 hamstring interventions for 10 weeks.
Description
Prior to the intervention, participants will undergo baseline testing which will include a) ultrasound imaging of the hamstrings muscles for measures of biceps femoris long head fascicle length, pennation angle, muscle thickness, anatomical cross-sectional area, and muscle volume b) passive and active ranges of motion, c) 3 repetition maximum (3RM) RDL strength, d) peak NHE force, e) countermovement jump height, f) broad jump distance, g) Pro Agility change of direction, and h) a 60 m sprint with sprint kinematics assessed via inertial measurement units. Participants will be randomly assigned…
Eligibility
- Age range
- 18–25 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: * Age 18-25 years * Actively participating in a club team * \>6 months experience with resistance training * Minimum of 1 year experience at the high school level in organized team sport * No history of hamstring injury within the last 6 months * No history of major lower extremity surgery (including back) * No acute musculoskeletal injury to the lower extremity * Not currently pregnant Exclusion Criteria: * Unable to refrain from resistance training outside the study * Unable to make at least 80% of the training sessions * Hamstring injury in the last 6 months * History…
Interventions
- OtherRDL
The RDL will be performed with a 6 second eccentric component with the athlete returning to the start position with a maximal concentric hip extension.
- OtherNHE
The NHE will be performed with a 6 second eccentric component.
- OtherSprint testing
The sprint training program will be performed twice per week with the first day of training focused on shorter distances to focus on acceleration and the second training day focused on maximal velocity. The relative efforts and distances for each training day will mimic a similar prescription to that of the resistance training program.
Location
- University of Wisconsin - MadisonMadison, Wisconsin