Comparison of the Effects of Hip and Ankle Focused Progressive Exercise Training on Lower Extremity Function in Athletes With Chronic Ankle Instability
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 36
- 试验地点
- 1
- 主要终点
- Cumberland Ankle Instability Tool (CAIT)
研究概览
简要总结
Chronic ankle instability refers to a combination of persistent mechanical and functional instability symptoms following an ankle sprain. Along with these symptoms, decreased proprioception, reduced neuromuscular control, poor postural control, limited dorsiflexion range of motion, decreased ankle strength, and altered lower-extremity biomechanics during functional activities are also observed. In addition, individuals with chronic ankle instability have been shown to exhibit limitations in energy transfer across the lower extremity. These symptoms may hinder patients' physical activity levels and athletic performance and negatively affect their quality of life. Since the lower extremity functions as a unit, changes in adaptive strategies at the ankle can lead to kinematic alterations in proximal joints. Although the instability originates at the ankle, higher-level joints are also affected, and it has even been reported that in this population, lower-extremity stability is primarily achieved through the hip joint. While the effectiveness of hip-focused exercises has begun to be investigated in the literature, the superiority of different muscle groups has not yet been compared.
详细描述
Chronic ankle instability is characterized by persistent mechanical and functional impairments that may develop following a lateral ankle sprain. Individuals with this condition commonly exhibit reduced proprioception, impaired neuromuscular control, limited dorsiflexion range of motion, and altered lower-extremity biomechanics, all of which may negatively affect daily activities and athletic performance. These deficits often lead to compensatory strategies at more proximal segments, and emerging evidence suggests that hip musculature plays a meaningful role in maintaining dynamic ankle stability. However, the specific contribution of individual hip muscle groups has not yet been clearly defined.
This study is designed to compare the effects of strengthening different hip muscle groups -the gluteus medius and gluteus maximus- on functional and neuromuscular outcomes in individuals with chronic ankle instability. Participants will be randomly assigned to one of three parallel groups: a gluteus medius strengthening group, a gluteus maximus strengthening group, or a control group performing standard balance exercises. Each intervention group will follow a structured and progressively loaded exercise program targeting the designated muscle group. All participants will complete supervised training sessions throughout the intervention period.
The study protocol includes a baseline assessment session, a multi-week intervention phase, and a post-intervention evaluation. Outcome measures will include functional performance tests, assessments of neuromuscular control, and metrics related to dynamic stability. These outcomes will be collected before and after the intervention to determine differences between groups.
The aim of this protocol is to determine whether targeted strengthening of specific hip muscle groups yields superior improvements in individuals with chronic ankle instability. The findings are expected to enhance understanding of the role of proximal musculature in lower-extremity stability and contribute to more precise and effective rehabilitation strategies for this population.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Professional athletes aged between 18 and 40 years
- •Participation in sports for at least 3 years
- •History of at least one lateral ankle sprain that occurred at least 12 months prior to enrollment
- •At least two episodes of perceived ankle "giving way" and/or at least two recurrent lateral ankle sprains within the past 6 months, and/or a subjective feeling of ankle instability on the injured side
排除标准
- •History of lower extremity surgery
- •History of fracture involving the lower extremity
- •Any lower extremity injury within the past 3 months that limited physical activity for more than one day
研究组 & 干预措施
Gluteus Maximus
Participants with chronic ankle instability will participate in a 6-week hip-focused exercise program emphasizing gluteus maximus activation.
干预措施: Gluteus Maximus (Other)
Gluteus Medius
Participants with chronic ankle instability will participate in a 6-week hip-focused exercise program emphasizing gluteus medius activation.
干预措施: Gluteus Medius (Other)
Control
Participants with chronic ankle instability will participate in a 6-week exercise program commonly used in the rehabilitation of ankle instability
干预措施: Control (Other)
结局指标
主要结局
Cumberland Ankle Instability Tool (CAIT)
时间窗: Baseline and after 6 weeks
The Cumberland Ankle Instability Tool (CAIT) is a self-reported questionnaire designed to assess the severity of chronic ankle instability. It consists of 9 items evaluating ankle stability during daily and sports-related activities. Scores range from 0 to 30, with lower scores indicating greater perceived ankle instability. An increase in the CAIT score reflects clinical improvement in ankle stability.
次要结局
- Single-Leg Heel Raise Balance Test(Baseline and after 6 weeks)
- Functional Ankle Instability Questionnaire(Baseline and after 6 weeks)
- Hip Muscle Strength(Baseline and after 6 weeks)
- Side Hop Test(Baseline and after 6 weeks)
- Step-Down Test(Baseline and after 6 weeks)
- Y-Balance Test(Baseline and after 6 weeks)
- Weight-Bearing Lunge Test(Baseline and after 6 weeks)
研究者
Çiğdem Demir
Student
Hacettepe University