Comparison Between Eccentric Exercise and Static Stretching on Hamstring Muscle Flexibility in Healthy Young
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 入组人数
- 42
- 试验地点
- 1
- 主要终点
- Knee Extension Angle
研究概览
简要总结
Background: Muscle flexibility is a fundamental physical quality for body development, daily life and sports activities, and also for maintaining muscle quality during aging. Limited flexibility leads to an increased prevalence of musculoskeletal injury in general population and longer return to sports activities.
Among the existent strategies to increase muscle flexibility in sports training and physical rehabilitation, static stretching is commonly used by health and physical activity professionals. Its effectiveness in increasing flexibility has been widely demonstrated; however its effects on muscle strength and power remains controversial.
Therefore, eccentric resistance exercise has been proposed as an effective intervention for increasing muscle flexibility through structural changes on muscle architecture (pennation angle and fascicle length) with the additional benefit of resistance training on muscle strength and power. Nonetheless, its unknown if the increase in muscle flexibility through eccentric resistance exercise could be similar to what has been previously demonstrated with static stretching.
详细描述
Hypothesis: The increase in hamstring flexibility after 6 weeks of eccentric resistance training in young males would be similar compared to 6 weeks static stretching training in the same population.
Goals: The primary aim of the study is to compare the effectiveness of 6 weeks eccentric resistance training vs 6 weeks static stretching training on hamstring flexibility in young males.
Specific Goals: Determine the effect of 6 weeks excentric exercise training and 6 weeks static stretching training on unilateral maximal isometric voluntary strength between both groups
To compare the effect of 6 weeks excentric exercise training and 6 weeks static stretching training in structural changes on muscle architecture (pennation angle, fascicle length and muscle thickness).
Methodology:
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Masculine University students between 18 and 35 years old
- •Physically Inactive considering physical activity recommendations from World Health Organization
- •Bilateral hamstring muscle stiffness defined as <160° in passive Knee Extension Angle Test
- •Body Max Index 18,5 < BMI < 24,9 kg/m2
排除标准
- •Lower back and lower limb (hip, thigh, knee, ankle) musculoskeletal injury in the last 12 months.
- •Hamstring injury (strain, tendinopathy, tendon avulsion) previously during the period of life
- •Dietary anabolic supplements consumption
- •Musculoskeletal, cardiovascular, respiratory o similar health condition that limits participation on physical activity programs
- •Regular resistance training (2 or more times per week, carrying out progressive training) in the previous 6 months
- •Smoker (1 cigarette per day)
研究组 & 干预措施
Control Group
These participants will not be under any type of treatment during the intervention protocol
干预措施: Control Group (Other)
Eccentric Exercise Group (EEG)
These participants will be subjected to 6 weeks of Nordic hamstring eccentric exercise (3 times per week)
干预措施: Nordic Hamstring Eccentric Exercise Training (Other)
Static Stretching Group (SSG)
These participants will be subjected to 6 weeks of passive static stretching on hamstring muscle (3 times per week)
干预措施: Passive Hamstring Static Stretching Training (Other)
结局指标
主要结局
Knee Extension Angle
时间窗: Before and after 6 weeks of training
The degree changes in passive knee extension will be assessed using Passive Knee Extension Angle Test after intervention
Sit-and-Reach
时间窗: Before and after 6 weeks of training
The distance (in centimeters) of change on functional posterior chain flexibility will be obtained in Sit-and-Reach Test after intervention
次要结局
- Maximal Isometric Voluntary Strength(Before and after 6 weeks of training)
- Long Head Biceps Femoris Pennation Angle(Before and after 6 weeks of training)
- Long Head Biceps Femoris Fascicle Length(Before and after 6 weeks of training)
- Long Head Biceps Femoris Muscle Thickness(Before and after 6 weeks of training)
研究者
Gabriel Nasri Marzuca-Nassr
Professor
Universidad de La Frontera