Breaking the Cycle of Low Back Pain: Blood Flow Restriction Training (BFR) as a Targeted Intervention for Rowers
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 120
- 试验地点
- 1
- 主要终点
- Hamstring and quadricep muscular fatigue assessment via Noraxon Electromyography
研究概览
简要总结
The purpose of this graduate student research study is to compare the effects of low-load blood flow restriction training (LL-BFR) and heavy-load training (HLT) in high-volume rowers with mild low back pain or recurrent low back pain (LBP), aiming to determine whether LL-BFR offers a safer yet equally effective alternative to HLT for enhancing performance and reducing risk of re-injury.
详细描述
Rowers will complete a web-based survey administered via administered via Google Forms for up to 15 minutes. Questions will address demographics, attendance adherence to rowing practice/races, a blood flow restriction pre-screening questionnaire, and the Orebro Musculoskeletal Pain Questionnaire (OMPQ) for LBP. Rowers will participate in a 2000-meter indoor rowing ergometer time trial to assess, technical fatigue, muscular fatigue, and performance. Muscular fatigue will be assessed through the use of Electromyography (EMG) collected via Noraxon Ultium electrodes and sensors on the hamstrings and quadriceps. Performance on the 2000-meter time trial will be determined by improvement of time to completion. Performance will be further assessed through a 1-repetition maximum (1RM) test for squat and deadlifts. Strength and endurance ratios will also be collected assessing hamstrings: quadriceps using an Asani tension dynamometer and abdominal endurance. Rowers will then be split into two groups (exercise and sham) through blocked randomization: light-load blood flow restriction training (LL-BFR) and heavy load training (HLT). Each LL-BFR session will include the following strength exercises at 20-30% of each participant's 1 RM: (1) Squats (Goblet/Back squat), (2) Deadlifts (Conventional/Romanian), (3) Side planks, (4) Plank, and (5) Bird-Dogs. The exercises will follow a 4-set structure: Set 1 with 30 repetitions, followed by three sets of 15 repetitions, with 30-second rests between each set. Participants will report their rating of perceived exertion (RPE) on a 1-10 scale, aiming to maintain an RPE of 7-8; load and occlusion pressure can be adjusted accordingly. The HLT will participate in the same exercises but under a different dosage of 6 sets and 5 reps at 60-80% 1 RM.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 13 Years 至 20 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Aged 13-20 years old
- •Currently active rower (training ≥3 days/week or 12 hours/week)
- •Mild LBP with a low reactivity (<3/10) or recurring LBP within the past 18 months that has affected attendance to team practices/races.
- •Able to complete a 2,000-meter rowing erg test
排除标准
- •Have severe or acute back pain that limits basic movement or requires medical treatment
- •History of spinal surgery or structural spine conditions (scoliosis requiring bracing/surgery)
- •Have a contraindication to BFR training, identified via BFR safety screening form:
- •Peripheral vascular disease (PVD)
- •History of vascular surgery in arms or legs
- •Skin grafts on arms or legs
- •Arteriovenous fistula in limbs
- •Cognitive or physical impairment that limits participation
- •Hypertension or high blood pressure (uncontrolled or undiagnosed)
- •Bleeding disorders (e.g., hemophilia)
- •Blood clotting disorders (e.g., lupus, factor-V Leiden)
- •Past history of DVT or pulmonary embolism (PE)
- •Surgery in the past 12 weeks
- •Recent limb immobilization (e.g., cast, boot) in the last 4 weeks
- •History of stroke or transient ischemic attack (TIA)
- •History of cancer
- •Diagnosed heart disease
- •History of rhabdomyolysis
- •Diagnosed diabetes
- •Sickle cell disease
- •History of compartment syndrome
- •History of nerve damage or injury
- •Any prior complications or adverse reactions to BFR training
- •Any other medical conditions that should be cleared by a physician before starting BFR
- •Pregnancy(Self-reported)
研究组 & 干预措施
Blood Flow Restriction Group
Using blood flow restriction, participants partake in aerobic (rowing) and anaerobic (squats/deadlifts) exercises.
干预措施: blood flow restriction (Other)
Non Blood Flow Restriction Group
Participants partake in aerobic and anaerobic exercises without blood flow restrictions. The participants will use heavier loads in the anaerobic exercises.
干预措施: Heavy load resistance training (Other)
结局指标
主要结局
Hamstring and quadricep muscular fatigue assessment via Noraxon Electromyography
时间窗: change between baseline and 10 weeks
次要结局
未报告次要终点