Feasibility and safety of 4 weeks of blood flow-restricted exercise in an individual with tetraplegia and known autonomic dysreflexia: a case report

Upper extremity blood-flow restriction training applied during walking in an adult with a rare form of spina bifida: a case report

INTRODUCTION

Adults with spina bifida have impaired mobility and often rely on assistive devices like crutches for walking, which exert high torque demands on the upper extremities. Blood flow restriction training (BFRT) may improve strength and gait measures by increasing intensity of training when applied during walking for individuals with limited walking tolerance. However, no studies have investigated the application of BFRT to the upper extremities for individuals who rely on crutches for walking.

CASE DESCRIPTION

This case describes a 29-year-old female with diastematomyelia, a rare form of spina bifida, who had lower extremity weakness and reduced gait capacity requiring crutches. The patient underwent 8 weeks of bilateral upper extremity BFRT during walking. The BFRT program consisted of 4 bouts of walking per session, each lasting 3 minutes with 35-50% limb occlusion pressure. Outcomes measured at baseline and 8 weeks included the 10 Meter Walk Test (10MWT), Timed Up and Go (TUG), 5 Times Sit-Stand Test (5×STS), hand-held dynamometry of 8 upper extremity muscles, and a BFRT satisfaction questionnaire.

OUTCOMES

After 8 weeks, she demonstrated improvements on the 10MWT (0.15 m/s, 23%), TUG (-3.4s, 20%), 5×STS (-3.4 s, -22%), and upper extremity strength improvements ranged from 8-79% (2.8-6.7 kg). There were no adverse events related to the intervention and satisfaction was high.

DISCUSSION

Bilateral upper extremity BFRT was safely applied during walking in an adult with spina bifida. The improvements in strength and functional mobility warrant future study among individuals who rely on upper extremity strength for ambulation.

Feasibility and safety of two weeks of blood flow restriction exercise in individuals with spinal cord injury

CONTEXT

Reduced muscle strength and function are common after spinal cord injury (SCI). While low-load blood flow restriction exercise (BFRE) enhances muscle strength in healthy and clinical populations, its safety and feasibility in individuals with SCI remain underexplored.

OBJECTIVES

To investigate the feasibility and safety of low-load BFRE in individuals with incomplete SCI.

STUDY DESIGN

Case series.

SETTING

SCI rehabilitation center.

PARTICIPANTS

Six participants with motor incomplete SCI were enrolled in the study.

INTERVENTION

A two-week BFRE intervention for the lower limbs was conducted twice weekly at 40% total arterial occlusion pressure, using 30-40% of 1-repetition maximum loads.

OUTCOME MEASURES

Feasibility measures, specifically recruitment and eligibility rates and intervention acceptability, were collected. Blood pressure (BP) responses and specific coagulation markers for deep vein thrombosis (DVT) were assessed as safety measures.

RESULTS

Recruitment and eligibility rates were 2.8% and 6.6% for individuals admitted for first-time rehabilitation (subacute SCI) and 8.3% and 13.9% for 4-week readmission rehabilitation stays (chronic SCI), respectively. Intervention acceptability was high, characterized by 95.8% training adherence and low-to-moderate self-reported pain levels. BP responses and changes in C-reactive protein, Fibrinogen, and D-dimer during the intervention remained within clinically acceptable levels.

CONCLUSION

BFRE was feasible in an SCI rehabilitation setting despite a low recruitment rate. BFRE imposed no heightened risk of DVT or severe BP fluctuations in the present case series. Additionally, no severe adverse events occurred, and only mild complaints were reported. More extensive safety considerations warrant larger-scale exploration.

TRIAL REGISTRATION

ClinicalTrials.gov identifier: NCT03690700.

Blood Flow Restriction Training for Improving Body Composition of a 26-Year-Old Male With L5-S1 Disc Protrusion and Nerve Root Compression: A Case Report

This case report explores the use of blood flow restriction (BFR) training to improve body composition in a 26-year-old male with L5-S1 disc protrusion and nerve root compression. BFR training, involving low-intensity exercises with restricted blood flow, offers a promising alternative for patients unable to engage in high-intensity workouts. The patient, a recreational gymgoer with a history of a significant lower back injury from a maximal deadlift event 20 months ago, presented with chronic pain, weight gain, and decreased stamina. Two attempts at spinal steroid injections during the 20-month period yielded only temporary relief, prompting the implementation of a 12-week BFR training regimen. The program combined BFR exercises with a calorie-deficit diet, resulting in substantial improvements in body composition and strength. Over 12 weeks, the patient lost 11.68 kg, reduced his body mass index from 26.50 to 22.85, and decreased his total body fat percentage from 28% to 22.43%. His lower back pain also significantly improved. This case highlights the effectiveness of BFR training in managing obesity and enhancing physical fitness in spinal injury patients, emphasizing the need for further research on its broader application.

Safety and efficacy of blood flow restriction exercise in individuals with neurological disorders: A systematic review

OBJECTIVES

This systematic review evaluated the safety and efficacy of blood flow restriction exercise (BFRE) on skeletal muscle size, strength, and functional performance in individuals with neurological disorders (ND).

METHODS

A literature search was performed in PubMed, CINAHL, and Embase. Two researchers independently assessed eligibility and performed data extraction and quality assessments.

ELIGIBILITY CRITERIA

Study populations with ND, BFRE as intervention modality, outcome measures related to safety or efficacy.

RESULTS

Out of 443 studies identified, 16 were deemed eligible for review. Three studies examined the efficacy and safety of BFRE, one study focused on efficacy results, and 12 studies investigated safety. Disease populations included spinal cord injury (SCI), inclusion body myositis (sIBM), multiple sclerosis (MS), Parkinson's disease (PD), and stroke. A moderate-to-high risk of bias was presented in the quality assessment. Five studies reported safety concerns, including acutely elevated pain and rating of perceived exertion levels, severe fatigue, muscle soreness, and cases of autonomic dysreflexia. Two RCTs reported a significant between-group difference in physical function outcomes, and two RCTs reported neuromuscular adaptations.

CONCLUSION

BFRE seems to be a potentially safe and effective training modality in individuals with ND. However, the results should be interpreted cautiously due to limited quality and number of studies, small sample sizes, and a general lack of heterogeneity within and between the examined patient cohorts.

Effectiveness of Blood Flow Restriction in Neurological Disorders: A Systematic Review

There is scientific evidence that Blood Flow Restriction (BFR) is beneficial in healthy people, the elderly and patients with musculoskeletal disorders. A systematic review was conducted to evaluate the effectiveness of BFR in patients with neurological disorders. The literature search was conducted up until July 2022 in the following databases: PubMed, Web of Science (WOS), Physiotherapy Evidence Database (PEDro), LILACS, Scopus, Cumulative Index of Nursing and Allied Literature Complete (CINAHL), the Cochrane Library and Scientific Electronic Library Online (SciELO). The PEDro scale was used to analyze the methodological quality of the studies, and the Cochrane Collaboration's tool was employed to evaluate the risk of bias. A total of seven articles were included. BFR seems to be beneficial in neurological disorders. Improvements have been found in sensorimotor function, frequency and step length symmetry, perceived exertion, heart rate and gait speed, walking endurance, fatigue, quality of life, muscles thickness, gluteus density and muscle edema. No improvements were found in lower limb strength or balance. However, results must be taken with caution due to the small number of articles and to the large heterogeneity. More clinical trials are needed. These studies should homogenize the protocols used in larger samples, as well as improve their methodological quality.