The Immediate Effect of Posterior Chain Facilitation by Foam Rolling on Reactive Force Performance
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 15
- 试验地点
- 1
- 主要终点
- Angles of inclination of the fuselage to the vertical.
研究概览
简要总结
An experiment elucidating the immediate effect of foam rolling of the posterior chain on reactive force performance that will represent multiple jumps over low obstacles. The measurements will be performed using the Optojump device, which will provide data on the time of foot contact with the ground and the jump height. The angles of the torso inclination to the vertical will also be measured during jumping.
详细描述
Fifteen women were selected for this experiment in the form of a randomized crossover study. Measurements were taken by leg jumps over 5 obstacles 125 cm apart. The pre-test was performed twice with a two-minute rest between each trial. Immediately after finishing the second trial, a randomly selected half of the probands performed posterior chain facilitation using a foam roller, facilitating first the left leg, then the right leg and finally spinal erectors. Rolling was performed with a sense of maximal intensity and at a high rolling speed across the full length and width of the muscle with both cranial and caudal rolling directions. Facilitation was performed on each muscle group in the distoproximal direction. Immediately following the intervention, a post-test was performed a total of 3 times, 1 minute after the intervention, 3 minutes after the intervention and 5 minutes after the intervention. The control measurement was performed the same way as the intervention, but the control group of probands rested in a resting sitting position for 4 minutes instead of foam rolling. After one week, a second measurement followed, where the original control group underwent the intervention measurement and vice versa.
The Optojump instrument (Microgate, Bolzano, Italy) was used to obtain the resistance and flight phase data. A video recording (GoPro HERO 9) was taken of the skipping procedure, from which photographs were taken over each obstacle at the moment of the greatest trunk tilt (the junction of the trochanter major and the external auditory canal exit) from the vertical axis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Screening
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •age range 18-30 years
- •regular training at least 3 times a week
- •training with a minimum duration of 1.5 hours
- •valid medical sports examination
- •experience with jumping over hurdles
- •having a problem with maintaining the physiological position of the torso when running
排除标准
- •acute illnesses
- •chronic disease
- •musculoskeletal limitations
- •during convalescence
研究组 & 干预措施
Intervention group
Facilitation of the posterior chain was performed by foam rolling (BLACKROLL, standard hardness), where the left lower limb was rolled first, then the right lower limb and finally the spinal erectors. Rolling was performed with a sense of the highest intensity and at a high rolling speed, across the full length and width of the muscle with both cranial and caudal rolling directions. Facilitation was performed on each muscle group in the distoproximal direction, in the order of:
m. triceps surae, hamstrings, and m. gluteus maximus, with the proband attending to each muscle group for 30 s. Finally, bilateral facilitation of mm. erectores spinae in the lumbar and thoracic segments was performed, also for 30 s. The frequency of rolling was determined using a metronome at 1.5 Hz.
干预措施: Foam Rolling (Other)
Control group
The control group of probands rested in a resting sitting position for 4 minutes after pre-tests, corresponding to the intervention period.
结局指标
主要结局
Angles of inclination of the fuselage to the vertical.
时间窗: 45 minutes
Measurements were made using video recording (GoPro HERO 9), with 1080p resolution and a recording rate of 240fps. Subsequent analysis of torso tilt was performed in Kinovea, with video frames taken over each obstacle at the moment of greatest torso tilt relative to the vertical axis. Using the marked point above the trochanter major ossis femoris and the external auditory canal outlet, a trunk axis was created and used to measure the angle relative to the vertical axis.
次要结局
- Foot to ground contact time.(1 hour)
- Jump height.(45 min)