Effect of a Novel Intervention Using Daily Intermittent Hypoxia and High Intensity Training on Upper Limb Function in Individuals With Spinal Cord Injury
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 58
- 试验地点
- 1
- 主要终点
- GRASSP
研究概览
简要总结
Currently, there are a variety of approaches utilized in attempts to improve upper extremity function, including: traditional therapy, neuroprostheses, botulinum toxin injections, or surgical interventions. In addition, regenerative and restorative therapies, such as: epidural stimulation, functional electrical stimulation, and stem cell therapies, show promise in animal models, but are not ready for clinical translation. Subsequently, there is a clear need to develop new strategies that can stimulate spinal plasticity and strengthen existing synaptic connections in order to maximize the benefits of training paradigms.
This study proposes the examine the effects of Acute Intermittent Hypoxia (AIH) in combination with upper extremity training, over the course of a month, to evaluate changes in upper extremity function, dexterity, and ability to complete activities of daily living. The use of acute intermittent hypoxia (AIH) has been demonstrated, through human and animal studies, to be an effective way of increasing spinal motor excitability and strengthening residual synaptic connectivity. AIH utilizes short duration (<2 min) exposures to reduced oxygen levels (~10% inspired oxygen), with alternating exposures to air with normal oxygen levels (~21% inspired oxygen).
Previous publications demonstrate that AIH is a safe and effective intervention to modify motor function in individual with chronic incomplete spinal cord injuries. The use of AIH has been shown to influence the activation in musculature, within 60-120 minutes of administration. In addition, when coupling AIH with overground gait training, an increase in functional endurance, as evaluated through the 6 minute walk test, and gait speed, as evaluated through the 10 meter walk test, were demonstrated. In addition, the use of hypoxic training has been studied in healthy individuals and athletes; however, literature examining the effect of a single bout of AIH on performance is limited.
详细描述
This study proposes the examine the effects of Acute Intermittent Hypoxia (AIH) in combination with upper extremity training, over the course of a month, to evaluate changes in upper extremity function, dexterity, and ability to complete activities of daily living. The use of acute intermittent hypoxia (AIH) has been demonstrated, through human and animal studies, to be an effective way of increasing spinal motor excitability and strengthening residual synaptic connectivity. AIH utilizes short duration (<2 min) exposures to reduced oxygen levels (~10% inspired oxygen), with alternating exposures to air with normal oxygen levels (~21% inspired oxygen).
Previous publications demonstrate that AIH is a safe and effective intervention to modify motor function in individual with chronic incomplete spinal cord injuries. The use of AIH has been shown to influence the activation in musculature, within 60-120 minutes of administration. In addition, when coupling AIH with overground gait training, an increase in functional endurance, as evaluated through the 6 minute walk test, and gait speed, as evaluated through the 10 meter walk test, were demonstrated. In addition, the use of hypoxic training has been studied in healthy individuals and athletes; however, literature examining the effect of a single bout of AIH on performance is limited.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 75 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •History of a non-progressive spinal cord injury, inclusive of levels of C1-T
- •Etiology of spinal cord injury is non-progressive in nature
- •Be able to demonstrate some hand muscle activation, or use of a tenodesis grasp (wrist extension)
- •At least 6 months post injury
- •Participants do NOT have to stop taking antispasticity medications to participate in the study.
- •Must be tested for anemia with a value of at least 10g/dl (for both men and women).
- •Patients will be recommended to their primary care physician to correct anemia if low levels are detected
- •Blood pressure must fall within this range- high: 160/110mmHg low: 85/55 mmHg
- •Must be asymptomatic (no dizziness, lightheadedness, etc)
排除标准
- •Medical conditions, including: congestive heart failure, cardiac arrhythmias, uncontrolled hypertension, uncontrolled diabetes mellitus, chronic obstructive pulmonary disease, emphysema, severe asthma, previous myocardial infraction, or known carotid/intracerebral artery stenosis.
- •Women who are currently pregnant or planning on becoming pregnant
- •Current tracheostomy placement
- •Utilization of mechanical ventilator for breathing
- •Current diagnosis of obstructive sleep apnea
- •Orthopedic injuries or surgeries that would limit participation
- •Concurrent participation in another research study or therapy services
- •Comorbid traumatic brain injury or other neurologic injuries that would impact cognition
研究组 & 干预措施
Acute Intermittent Hypoxia (AIH) treatment
The mask will first provide a normoxic air (room air) mixture (FiO2 = 0.21) via the mask. The mask is designed to couple with a universal mask circuit connecting to the air mixture system. The purpose of the mask will be to minimize room air entrainment.
AIH in combination with upper extremity training
The mask will first provide a normoxic air (room air) mixture (FiO2 = 0.21) via the mask. The mask is designed to couple with a universal mask circuit connecting to the air mixture system. The purpose of the mask will be to minimize room air entrainment. In addition to this upper extremity training will be given using an upper-limb robotic rehabilitation device.
干预措施: Upper extremity training/Armeo Spring (Combination Product)
Sham AIH therapy in combination with upper extremity training
Sham hypoxia followed by upper extremity training will be given using an upper-limb robotic rehabilitation device (Armeo Spring®, Hocoma AG, Switzerland). Armeo Spring is a gravity support system based on an ergonomic arm exoskeleton with integrated springs.
干预措施: Upper extremity training/Armeo Spring (Combination Product)
Sham AIH therapy
Sham hypoxia
结局指标
主要结局
GRASSP
时间窗: 4 weeks
Graded Redefined Assessment of Strength, Sensation and Prehension
次要结局
- grip strength(4 weeks)
- 9-hole peg test(4 weeks)
研究者
Zev Rymer
Investigator
Shirley Ryan AbilityLab