Mode-specific Effects of Concentric and Eccentric Isokinetic Training of Hamstring Muscle at Slow Angular Velocity on Functional Hamstrings-to-quadriceps Ratio
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- Functional Hamstring-to-quadriceps ratio (PTecc:PTcon)
研究概览
简要总结
Mode specificity of eccentric and concentric isokinetic training have been examined in previous studies but with conflicting results. The present study aimed to examine the mode-specific effects of eccentric and concentric isokinetic training of hamstring muscle at slow angular velocity on eccentric peak torque of hamstring (PTecc), concentric peak torque of quadriceps (PTcon), acceleration time of hamstring (AThams) and quadriceps (ATquad), deceleration time of hamstring (DThams) and quadriceps (DTquad), time to peak torque of hamstring (TPThams) and quadriceps (TPTquad), and functional Hamstring-to-Quadriceps ratio (PTecc/PTcon).
详细描述
Several studies in past have tried to examine the mode specificity of concentric and eccentric training of different muscles and at different angular velocities i.e. whether concentric training will increase the concentric strength only or both concentric and eccentric strength and whether eccentric training will increase eccentric strength only or both eccentric and concentric strength.
Since conflicting reports are available regarding mode specificity of eccentric and concentric isokinetic training therefore one study was needed that can examine the mode specificity of these training in hamstring muscles at slow angular velocity. The present study aimed to examine the mode-specific effects of six weeks of isokinetic concentric and eccentric training of the hamstring muscle at slow angular velocity on the PTecc/PTcon, AT, DT, and TPT.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 28 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Healthy young males
- •Age between 18 to 27
- •Recreationally active who used to engage regularly in 1-5 hours of physical activity per week
排除标准
- •Individual presently indulged in strength training of knee.
- •Individuals with any kind of injury around the knee, hip, ankle, foot
- •Unconsolidated fractures around the knee. • Stress fractures
- •Subjects with the acute phase of trauma, which may interfere with the exercise regime
- •Subjects with cardio-respiratory problems and other medical problems like diabetes, asthma, etc.
- •Subjects with tendinitis and other inflammatory conditions.
研究组 & 干预措施
Eccentric isokinetic group
In this group, eccentric isokinetic training of hamstring muscle was performed.
干预措施: Eccentric isokinetic training (Other)
Concentric isokinetic group
In this group, concentric isokinetic training of hamstring muscle was performed.
干预措施: Concentric isokinetic training (Other)
结局指标
主要结局
Functional Hamstring-to-quadriceps ratio (PTecc:PTcon)
时间窗: 6 weeks
This ratio was calculated using eccentric peak of hamstring and concentric peak torque of quadriceps muscle
次要结局
- Deceleration time of hamstring (DThams)(6 weeks)
- Acceleration time of hamstring (AThams)(6 weeks)
- Acceleration time of quadriceps(6 weeks)
- Time to peak torque of hamstring(6 weeks)
- Time to peak torque of quadriceps(6 weeks)
- Deceleration time of quadriceps(6 weeks)
研究者
Masood Khan
Principal Investigator
King Saud University