Use of Whole-body Vibration to Acutely Improve Landing Biomechanics In Individuals With Anterior Cruciate Ligament Reconstruction (ACLR)
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 36
- 试验地点
- 1
- 主要终点
- Internal Knee Adduction Moment (KAM)
研究概览
简要总结
Individuals who undergo anterior cruciate ligament reconstruction (ACLR) are at heightened risk of secondary anterior cruciate ligament (ACL) injury (e.g. additional injury to the ACL in either knee). One of the primary physiological consequences of ACLR is the presence of quadriceps dysfunction (i.e. reduced activation and strength) which has been linked to altered gait and landing biomechanics. Aberrant landing biomechanics have been associated with an increased risk of both primary and secondary ACL injury, thus additional research is needed to evaluate the efficacy of treatments aimed to reduce quadriceps dysfunction and restore adequate landing biomechanics in attempts to reduce secondary ACL injury. Whole-body Vibration (WBV) has demonstrated success in improving quadriceps function and gait biomechanics in individuals with ACLR, however its effectiveness on landing biomechanics is unknown. To evaluate the acute effects of WBV on landing biomechanics in those with ACLR, a non-randomized crossover-controlled trial was conducted to determine if a single bout of WBV improved landing biomechanics greater than a control condition. Participants completed two separate testing sessions (separated by at least one week) in which measures of quadriceps function and landing biomechanics were assessed before and after either a control (no WBV) or WBV intervention. Separate linear mixed-effects models of post-test values for each dependent outcome were conducted with condition (control vs WBV) and limb (ACLR vs Uninvolved) as an interaction term, and each condition pre-test values and time post-ACLR as fixed effect covariates and a random effect of subject. The investigators expect to observe a significant improvement in landing biomechanics following WBV compared to the control condition.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- Double (Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Between the ages of 18-35
- •History of primary, unilateral ACLR
- •Medically cleared for unrestricted physical activity
排除标准
- •More than 5 years removed from ACLR
- •Currently pregnant
- •History of other lower extremity surgery
- •History of lower extremity injury in previous 6 months
- •History of neurological disorder
- •Maximal isometric quadriceps torque > 3.0 Nm/kg in the ACLR limb
结局指标
主要结局
Internal Knee Adduction Moment (KAM)
时间窗: Separate values prior to and immediately following the intervention (within 5 minutes).
Peak value during landing in both single-leg and double-leg tasks averaged over 3 trials and normalized to the product of body weight and height
Internal Knee Extension Moment (KEM)
时间窗: Separate values prior to and immediately following the intervention (within 5 minutes).
Peak value during landing in both single-leg and double-leg tasks averaged over 3 trials and normalized to a product of body weight\*height
Knee Flexion Angle (KFA)
时间窗: Separate values prior to and immediately following the intervention (within 5 minutes).
Peak value during landing in both single-leg and double-leg tasks averaged over 3 trials
次要结局
- Dynamic Postural Control(Separate values prior to and immediately following the intervention (within 5 minutes).)
- Vertical Ground Reaction Force(Separate values prior to and immediately following the intervention (within 5 minutes).)
- Frontal Plane Kinematics(Separate values prior to and immediately following the intervention (within 5 minutes).)