Acute Effect of Static Stretching and Pilates Stretching on the Concentric Muscle Strength of the Knee Extensors and Flexors
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 102
- 试验地点
- 1
- 主要终点
- Muscle strength
研究概览
简要总结
Introduction: Studies have shown that static stretching performed immediately before strength exercises impairs performance. However, unlike static stretching, dynamic stretching performed immediately before muscular strength exercises does not seem to result in worse performance, and in some cases may even provide greater strength performance. Still, the literature is controversial and inconclusive to date.
Objective: To verify the acute effect of static stretching versus dynamic stretching on the muscle strength of young university students.
Methods: The sample will consist of 102 physically active young university students, of both sexes, aged between 18 and 25 years old, subdivided into three groups: Group 1 - static stretching; Group 2 - dynamic stretching; and Group 3 - control. Everyone will undergo assessment of the isokinetic peak torque of the knee extensor and flexor muscles at 60º/s and 180º/s in the dominant lower limb. Next, the experimental groups (Groups 1 and 2) will perform static or dynamic stretching exercises for the quadriceps and hamstring muscles, while the control group will not perform any activity. Finally, everyone will undergo muscle strength assessment again according to the same procedures used initially. Analysis of covariance (ANCOVA) will be used to compare groups, with data from the initial assessment as adjustment covariates.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 25 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •to practice systematic physical exercises at least three times a week over the last six months;
- •healthy young adults, aged between 18 and 25 years;
- •agree to participate in the study by signing the Free and Informed Consent Form.
排除标准
- •musculoskeletal injuries in the lower limbs;
- •pregnancy.
研究组 & 干预措施
Static stretching
A equipment (Ladder Barrel), used in Pilates sessions, will help with the movement. To stretch the knee flexor muscles, the participant, standing, will place the dominant lower limb on the equipment and keep the other on the ground, remaining with both knees extended. The trunk will be flexed forward within the maximum range of movement achieved by the participant, until discomfort occurs in the posterior region of the thigh, but not pain. To stretch the knee extensor muscles, the participant, standing, will position the back of the foot of the dominant lower limb on the equipment and keep the other limb with the foot flat on the ground. The glute of the dominant lower limb will meet the heel of the same limb, until there is discomfort, but not pain. In both stretches, the position will be maintained for 30 seconds, followed by an equal rest time. Three series of stretching will be performed for the knee flexor muscles and then another three series for the extensor muscles.
干预措施: Static stretching (Other)
Pilates stretching
The protocol will be the same as the Static stretching Group, with the exception of maintaining the static position during the exercise. To do this, when stretching the knee flexor muscles, the trunk will perform continuous flexion movements until the point of muscular discomfort, followed by the extension movement, until an upright posture, continuously. On the other hand, when stretching the knee extensor muscles, the gluteal muscle of the dominant lower limb will meet the heel of the same limb, until there is discomfort, followed by the movement away, continuously.
干预措施: Pilates stretching (Other)
Control
结局指标
主要结局
Muscle strength
时间窗: Acute (immediate) effect: pre-intervention and post-intervention (10 minutes after pre-intervention)
Concentric muscle strength of the knee extensors and flexors
次要结局
未报告次要终点
研究者
Raphael Goncalves de Oliveira
Professor
Universidade Estadual do Norte do Parana