Comparison Between Eccentric Hamstring Training and Sprint-Specific Training
2026年7月15日 更新者：University of Wisconsin, Madison
Comparison Between Eccentric Hamstring Strength Training and Sprint-Specific Training on Muscle Hypertrophy, Strength, Power, and Sprint Performance in Club Sport Collegiate Athletes
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.
研究概览
详细说明
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 to either the RDL, NHE, or sprint training group. After randomization, each participant will undergo the intervention program based upon their group allocation.
Performance testing and imaging will be repeated mid-intervention, following the intervention, and after 2 weeks of deloading.
研究类型
介入性
注册 (估计的)
90
阶段
- 不适用
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习联系方式
- 姓名：Scott K Crawford, PhD
- 电话号码：608) 265-1308
- 邮箱：skcrawford2@wisc.edu
学习地点
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Wisconsin
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Madison、Wisconsin、美国、53705
- University of Wisconsin - Madison
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接触：
- Scott K Crawford, PhD
- 电话号码：608-265-1308
- 邮箱：skcrawford2@wisc.edu
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-
参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
- 成人
接受健康志愿者
是的
描述
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 of major lower extremity surgery (including back)
- Acute musculoskeletal injury to the lower extremity
- Currently pregnant
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：其他
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：双倍的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Romanian dead lift (RDL) group
The training intervention groups will undergo the same program with the only difference being the interventional hamstring exercise.
The program will consist of a 2-week familiarization period followed by 8 weeks of progressive training.
The RDL arm will perform RDL.
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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.
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实验性的：Nordic hamstring exercise (NHE) group
The training intervention groups will undergo the same program with the only difference being the interventional hamstring exercise.
The program will consist of a 2-week familiarization period followed by 8 weeks of progressive training.
The NHE arm will performed NHE
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The NHE will be performed with a 6 second eccentric component.
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实验性的：Sprint group
The training intervention groups will undergo the same program with the only difference being the interventional hamstring exercise.
The program will consist of a 2-week familiarization period followed by 8 weeks of progressive training.
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.
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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.
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研究衡量的是什么？
主要结果指标
结果测量 |
大体时间 |
|---|---|
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Change in fascicle length (FL)
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in muscle cross-sectional area (CSA)
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in muscle volume
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in pennation angle (PA)
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Change in eccentric strength
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Eccentric hamstring strength of each limb will be assessed during the hamstring exercise.
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in inertial measurement units (IMU)-based sprinting biomechanics
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Sprinting biomechanics will be assessed using seven IMUs (sacrum, both thighs, both shanks, both feet).
Lower extremity joint motions referenced to upright stance will be calculated throughout an on-field sprint and other football drills.
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in countermovement jump (CMJ) performance
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in standing broad jump (SBJ) performance
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in change of direction (CoD) performance
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in range of motion (ROM) performance
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in hip flexion
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Change in anterior pelvic tilt
大体时间：Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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Baseline to Mid-intervention (6 weeks), Post-intervention (10 weeks), and Post 2 week de-training (12 weeks)
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (估计的)
2026年9月1日
初级完成 (估计的)
2027年9月1日
研究完成 (估计的)
2027年9月1日
研究注册日期
首次提交
2026年7月7日
首先提交符合 QC 标准的
2026年7月15日
首次发布 (实际的)
2026年7月21日
研究记录更新
最后更新发布 (实际的)
2026年7月21日
上次提交的符合 QC 标准的更新
2026年7月15日
最后验证
2026年7月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.