Effect of Sand on Knee Load and sEMG Activity During a Single Leg Landing Task: Implications for ACL Prevention and Rehabilitation
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 20
- 试验地点
- 2
- 主要终点
- knee abduction moment (N.m)
研究概览
简要总结
This study evaluates the effect of different surfaces on the load experienced by the knee when landing from a single leg hop. A sand, pliable grass and firm (hard floor) surface will be compared when hopping from a 30 cm height. Each subject will complete 5 hops on each surface in a random order. The muscle activity in selected muscles of the lower limb will also be investigated to see how this differs in the landing leg, when landing on the different surfaces.
详细描述
The aim of this study is twofold: 1) To investigate the effect of sand on landing kinematics and kinetics at the knee joint when performing a single leg jump landing task (dominant leg), comparing sand with a firm surface and pliable grass control. 2) To investigate the sEMG activity of the hamstring, quadriceps and gastrocnemius muscles of the dominant leg during the jump landing task on these different surfaces (from take off through to terminal knee flexion at the end of the landing phase).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 16 Years 至 45 Years（Child, Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Participate in a minimum of 3 hours sporting activity per week.
- •Provided Informed Consent
- •Must be over 16 years of age (16-45 years)
- •No exclusion criteria
排除标准
- •Not willing to provide informed consent
- •History of ACL injury or other knee pathology
- •Significant lower limb pathology
- •Previous lower limb fracture or surgery
- •Lower Limb injury in last 3 months.
结局指标
主要结局
knee abduction moment (N.m)
时间窗: 1 testing session (1 day)
a combination of ground force and amount of knee valgus on landing
knee valgus
时间窗: 1 testing session (1 day)
angle at the knee on landing
surface electromyography (sEMG) activity pre and post landing
时间窗: 1 testing session (1 day)
muscle activity of quadriceps (vastus medialis, vastus lateralis), hamstrings (lateral and medial), gastroc (lateral head)
次要结局
- Anterior tibial translation(1 testing session(1 day))
研究者
Mark Richardson
Principal Investigator
Teesside University