A Neuroprosthesis for Seated Posture and Balance
Spinal Cord InjuryParalysis2 moreThe purpose of this study is to evaluate a surgically implanted functional electrical stimulation (FES) system to facilitate stability of the trunk and hips. FES involves applying small electric currents to the nerves, which cause the muscles to contract. This study evaluates how stabilizing and stiffening the trunk with FES can change the way spinal cord injured volunteers sit, breathe, reach, push a wheelchair, or roll in bed.
SVF Combined With Functional Self-assembling Peptide Nanofiber Hydrogels in the Treatment of Spinal...
Safety IssuesTraumatic spinal cord injury (SCI) is a severe medical problem experienced by people worldwide with high mortality and long term morbidity. Although progress has been made in understanding cellular and molecular mechanisms of SCI, treatment and management protocols aimed at ameliorating neurologic damage in patients remain ineffective. Cells and biomaterials offer new hope for the treatment of SCI. Up to now, there have been many studies on the treatment of SCI using cells and biomaterials. Stromal Vascular Fraction (SVF) is a heterogeneous mixture of cells obtained from adipose tissue. These cells include adipose-derived stem cells, endothelial cells, endothelial progenitor cells, pericytes, T cells, and other immune cells. SVF has strong self-renewal, proliferation and differentiation potential, it can replace necrotic cells and synthesize a variety of bioactive factors through paracrine and autocrine, activate cell and vascular regeneration pathways. Therefore, SVF shows significant advantages. The sequence of functional self-assembling peptide nanofiber hydrogels (hereinafter referred to as hydrogels) is HGF(RADA)4RIKVAV (H: histidine; G: Glycine; F: phenylalanine; R: arginine; A: Alanine; D: aspartic acid; I: isoleucine; K: Lysine; V: valerine). The hydrogel is based on the short peptide RADA16 ((RADA)4, which is already available in the product PuramatrixTM for clinical hemostasis and cell culture, but the aqueous solution of PuramatrixTM is acidic which harms cells and tissues upon direct contact. While the hydrogels in this study is pH neutral and does not harm cells and tissues. Articles published by the provider demonstrate that hydrogels can support 3D stem cell growth, have good biocompatibility in vivo (animal spinal cord), and promote neural regeneration after SCI. The chemical structure of the hydrogels is simple and clear, and the degradation product is amino acid. Therefore, SVF and the hydrogel from functional self-assembling peptide are combined for SCI repair in the study.
Hunova® Randomized Controlled Trial for Trunk Control Improvement in Spinal Cord Injured Patients...
Spinal Cord InjuryIn patients with Spinal Cord Injury (SCI), trunk and therefore postural control (both in statics and dynamics) are impaired, often with strong consequences on daily life activities. Therefore, improvement and reinforcement of trunk control are primary rehabilitation (rehab) goals. For the evaluation of trunk control in SCI people, still today no tests and scales are definable as gold standards. Nowadays, for evaluation and rehab purposes of trunk control, balance and proprioception, in both sitting and standing positions, conventional rehabilitation can be supplemented with robotic treatments, e.g. through the Hunova® device (by Movendo Technology). Several studies have demonstrated that conventional rehab associated with robotic training is able to influence functional and motor outcomes in stroke patients, while little evidence is available on SCI patients, also on the number of robotic sessions needed. The present randomized controlled study primarily aims to demonstrate the effects on trunk control of an integrated rehab treatment (standard plus Hunova®), compared to the standard alone and to gain evidence on the better rehabilitation scheme in terms of number of Hunova® sessions. The correlation between the variation of trunk control, measured by the output data of the Hunova® device itself - ideally more objective - and that assessed through a validated clinical scale, will also be estimated.
Evaluation of FES+VFBT With Individuals With Lived Experience
Spinal Cord InjuriesStrokeFalls are an "emerging public health crisis" that cost the Canadian health care system billions of dollars each year. Moreover falls have a significant, detrimental impact on the lives of those who fall. In addition to physical injury and hospital admission, individuals may experience a post-fall syndrome characterized by dependence, depression, and reduced mobility and participation. Individuals living with the effects of neurological disease or injury are at a particularly high risk of falling. For example, 69-78% of individuals with spinal cord injury or disease (SCI/D) and 73% of individuals post-stroke fall at least once per year. Despite this high fall risk, evidence-based initiatives to prevent falls among those with SCI/D or stroke are lacking in neurorehabilitation. Furthermore, little time is dedicated to improving balance during inpatient neurorehabilitation. For example, ambulatory inpatients with SCI/D spend, on average, a mere 2.0±2.0 hours on balance training over the course of their entire inpatient stay. Our team is developing effective solutions to the "high-volume, high-risk and high-cost challenge" of falls. Our long-term objective is to develop an intervention that improves balance in a clinically meaningful and feasible way, facilitating the recovery of safe upright mobility and addressing the current health crisis of falls in individuals living with neurological disease or injury. The intervention will be developed with a focus on neurological populations, as these patient groups have a critical need for balance training; however, the intervention will be transferrable to other populations at risk of falls, such as older able-bodied adults. A probable solution to the gap in balance interventions is functional electrical stimulation (FES), whereby an electrical current is applied to peripheral nerves to facilitate muscle contractions. By applying the appropriate amount of electrical stimulation at the appropriate time during movement execution, the central nervous system can be re-educated, facilitating motor and functional improvements. The investigators developed a closed-loop FES system whose controller mimics the physiological control system. By combining this system with visual feedback balance training (VFBT), the investigators developed a prototype system of FES and VFBT (FES+VFBT). This intervention involves standing on a force plate with one's centre of pressure (COP) presented on a monitor. As the user moves his/her COP in response to a game, FES is delivered to the plantarflexor and dorsiflexor muscles through the device, MyndSearch.
Autonomic Effects of Spinal Cord Stimulation in Spinal Cord Injury
Orthostatic HypotensionThe goal of this interventional crossover study is to determine the effects of transcutaneous spinal cord stimulation (TSCS) on the ability to perform moderate exercise and regulate core body temperature in the chronic spinal cord injury community. The main questions it aims to answer are: What are the effects of active TSCS targeted for BP control on exercise endurance time and HR recovery during submaximal arm cycle ergometry (ACE) as compared to sham TSCS in participants with chronic, cervical SCI? What are the effects of active TSCS on Tcore responses to cool ambient exposure and on subjective reporting of thermal comfort and thermal sensitivity as compared to sham TSCS. Participants will receive sham and active stimulation while using an arm bicycle or while in a cold room. Participants are free to participate in either the exercise phase, the cold room phase, or both phases of this study. Please note that there no expected long term benefits of this study.
Motor and Autonomic Concomitant Health Improvements With Neuromodulation and Exercise Training:...
Spinal Cord InjuriesNeurogenic Bladder1 moreSpinal cord injury (SCI) disrupts many aspects of life, including the loss of volitional movement and involuntary control of bodily functions; both crucial functional recovery priorities for this population. Mobility impairments and secondary complications limit an individual's ability to exercise, a behavior known to have wide-ranging functional and health benefits. This trial will investigate whether activity-based therapy (ABT), using body-weight-supported treadmill training (BWSTT), can change the strength of signals from the brain that control volitional movement, leading to improvements in seated balance as well as other important involuntary bodily (i.e. cardiovascular, urinary tract, bowel and sexual) functions. The investigators aim to determine whether these improvements can be augmented with the addition of non-invasive transcutaneous spinal cord stimulation (TSCS). This therapy has been shown to re-awaken dormant spinal circuits. In this randomized controlled trial, TSCS with ABT, using BWSTT (three sessions/week for twelve weeks), will be compared to ABT+SHAM in individuals with chronic motor-complete spinal cord injury (SCI). Those in the ABT+SHAM group will be given the option to complete an ABT+TSCS open-label follow-up. Before and after training, the following outcomes will be assessed by validated methods: corticospinal excitability, motor function, and seated balance (Hypothesis 1 - Motor Function); severity and frequency of blood pressure instability, urinary tract, bowel, and sexual dysfunctions (Hypothesis 2 - Autonomic Functions); and general health (Hypothesis 3 - Quality of Life). This collaborative project is between consumers with SCI and clinicians/scientists with expertise in SCI care (kinesiologists, physiotherapists, physiatrists, sexual health clinicians). Compared to ABT alone, the investigators anticipate that ABT+TSCS will result in superior improvements in motor and autonomic functions in individuals with SCI.
Effectiveness of Virtual Gait System Intervention in Motor Function in People With Incomplete Spinal...
Incomplete Spinal Cord InjuryRoughly 60% of people with Spinal Cord Injury (SCI) have an incomplete one, with a strength, sensibility, and muscle tone alteration. Moreover, this condition involves a high impact on the psychological and socioeconomic levels. After an incomplete SCI, spontaneous functional recovery occurs. This recovery is strong associated with injury and person characteristics, and with corticospinal fibers, motor cortex, and spinal neurons neuroplasticity. However, also it is possible to stimulate neuroplasticity mechanisms of these structures throughout rehabilitation techniques. Generally, with external devices, exoskeletons, or physical exercise therapy. With it, clinicians achieve early, intensive and specific therapies. This reorganization and recovery can be influenced because of mirror neurons, located in motor and premotor areas, and in other cortical and subcortical areas. These types of neurons are activated with a functional action observation. Due to incomplete SCI neuroplasticity recover, these therapies (concretely, illusion visual systems) have been the object of systematic review in this population with the aim of knowing its repercussion on neuropathic pain in chronic patients. Moseley and collaborators in 2007 were the first of proposing a virtual gat system that induced patients' gait illusion. The promising results in this intervention, leading institutions performed similar studies with other stimuli and devices, with good results. However, SCI studies are focused on neuropathic pain and not in motor function (like in other populations). Therefore, there is not any study that assesses mirror neurons activity in the physical condition and/or in functional gait capaity in incomplete spinal cord injury population. On the basis of the above, the study principal aim is to evaluate a virtual gait treatment effectiveness compared with combined interventions with specific gait physical exercise in functional capacity in the incomplete spinal cord injury population. Concretely in follow outcomes: gait, functionality, strength, muscle tone, sensibility, and neuropathic pain.
Improving Activity Engagement Among Persons With SCI During COVID-19
Spinal Cord InjuriesDuring the current COVID-19 pandemic many spinal cord injury (SCI) rehabilitation services are limited to emergency management, leaving those living in the community without access to services. Unfortunately, this can lead to negative effects including increase in emotional distress, feelings of isolation, and decreased activity engagement. Due to their limited mobility and greater likelihood of respiratory illness it is imperative to provide alternative forms of activity engagement to reduce their risk for secondary complications. Physical activity has been demonstrate to have numerous benefits for individuals with SCI ranging from enhanced health through prevention of secondary complications to improved subjective well-being. The current study proposes to provide an online physical activity program through web-based videoconferencing to person with SCI to improve overall wellbeing and activity engagement. The program will consist of six weeks of twice-weekly, 45-minute sessions in which an experienced fitness instructor (i.e., wheelchair aerobics) with lived experience and a Kinesiology graduate student will lead online sessions. The sessions will be comprised of a 10-minute warm-up phase, a 25-minute aerobic phase and a 10-minute cool-down phase that will incorporate upper-extremity flexibility exercises and guided meditation. In all cases, remote (i.e., in-home) participant monitoring of physiological signals will be conducted by the instructor to ensure safety of participants. Once the program has been completed, participants will be asked to complete self-report questionnaires related to acceptability, feasibility, and limited effectiveness. Participants will also be asked to complete a brief semi-structured interview examining barriers and facilitators of the program. Participant feedback from the interviews will be used to further develop of the program to meet the needs of the population and develop sustainable approaches for access to care in the community setting through collaborations with community partners (SCI Ontario, National SCI Alliance, Ontario Neurotrauma Foundation). Ultimately, the proposed project aims to improve overall wellbeing and access to health care service for those with SCI during the COVID-19 quarantine.
Amplify Gait to Improve Locomotor Engagement in Spinal Cord Injury
Incomplete Spinal Cord InjurySpinal cord injury (SCI) affects ~42,000 Veterans. The VA provides the single largest network of SCI care in the nation. The lifetime financial burden of SCI can exceed $3 million. A major cost of SCI is impaired mobility. Limited mobility contributes to decreased ability to work, increased care requirements, secondary injury, depression, bone mineral density loss, diabetes, and decreased cardiovascular health. Among ambulatory individuals with iSCI, residual balance deficits are common and are strongly correlated with both functional walking ability and participation in walking activities. The development of effective rehabilitation tools to improve dynamic balance would substantially improve quality of life for Veterans living with iSCI. Improving mobility through interventions that enhance dynamic balance would positively impact health, independence, and the ability to integrate into social, intellectual, and occupational environments.
Influence of Transcutaneous Spinal Stimulation Intensity on Spasticity After SCI
Spinal Cord InjuriesTranscutaneous spinal stimulation (TSS) is a form of electrical stimulation delivered over the skin of the spine that may be valuable for reducing spasticity without the side effects of antispasticity medications. The intensity of stimulation, or dose, that promotes the best response is not known. Understanding the response to different intensities of stimulation and how they affect spasticity will help guide rehabilitation for persons with SCI. Therefore, this study aims to identify the effects of TSS as a non-drug intervention for spasticity management.