Does hand robotic rehabilitation improve motor function by rebalancing interhemispheric connectivity after chronic stroke? Encouraging data from a randomised-clinical-trial.

OBJECTIVE: The objective of this study was the evaluation of the clinical and neurophysiological effects of intensive robot-assisted hand therapy compared to intensive occupational therapy in the chronic recovery phase after stroke. METHODS: 50 patients with a first-ever stroke occurred at least six months before, were enrolled and randomised into two groups. The experimental group was provided with the Amadeo™ hand training (AHT), whereas the control group underwent occupational therapist-guided conventional hand training (CHT). Both of the groups received 40 hand training sessions (robotic and conventional, respectively) of 45 min each, 5 times a week, for 8 consecutive weeks. All of the participants underwent a clinical and electrophysiological assessment (task-related coherence, TRCoh, and short-latency afferent inhibition, SAI) at baseline and after the completion of the training. RESULTS: The AHT group presented improvements in both of the primary outcomes (Fugl-Meyer Assessment for of Upper Extremity and the Nine-Hole Peg Test) greater than CHT (both p < 0.001). These results were paralleled by a larger increase in the frontoparietal TRCoh in the AHT than in the CHT group (p < 0.001) and a greater rebalance between the SAI of both the hemispheres (p < 0.001). CONCLUSIONS: These data suggest a wider remodelling of sensorimotor plasticity and interhemispheric inhibition between sensorimotor cortices in the AHT compared to the CHT group. SIGNIFICANCE: These results provide neurophysiological support for the therapeutic impact of intensive robot-assisted treatment on hand function recovery in individuals with chronic stroke.

Changes in sexual functioning following traumatic brain injury: An overview on a neglected issue.

Traumatic brain injury (TBI) is any damage to the skull and/or the brain and its frameworks due to an external force. Following TBI, patients may report cognitive, physiological and psychosocial changes with a devastating impact on important aspects of the patient's life, such as sexual functioning. Although sexual dysfunction (SD) occurs at a significantly greater frequency in individuals with TBI, it is not commonly assessed in the clinical setting and little information is available on this crucial aspect of patients' quality of life. As the number of people with TBI is on the rise, there is a need for better management of TBI problems, including SD, by providing information to patients and their caregivers to achieve sexual health, with a consequent increase in their quality of life. Discussing and treating sexual problems in TBI patients enters the framework of a holistic approach. The purpose of this narrative review is provide clinicians with information concerning changes in sexual functioning and relationships in individuals with TBI, for a better management of patient's functional outcomes and quality of life.

Self-Efficacy, Poststroke Depression, and Rehabilitation Outcomes: Is There a Correlation?

BACKGROUND: The sudden live changes of stroke survivors may lead to negative psychological and behavioral outcomes, including anxiety and depressive mood, which may compromise the rehabilitation process. Some personality features, such as self-efficacy, could play an important role in mediating the degree of post-stroke depression. Aim of this study is to investigate the possible correlation between specific psychological dimensions, such as poststroke depression and self-efficacy, and rehabilitation outcomes. MATERIALS AND METHODS: Thirty-eight patients, affected by stroke, completed a four-hour-daily training lasting up to 8 weeks, including traditional and robotic-assisted physiotherapy. Patients were assessed at admission (T0) and at the end (T1) of the motor training, by means of the Montgomery-Asberg Depression Scale, the General Self-Efficacy Scale, and the Functional Independent Measure. RESULTS: We observed a significant T0-T1 difference in MADRS scores in patients with a better functional recovery (t = 5.76; P < .0001) and higher self-efficacy (t = 4.74; P < .001), but no significant T0-T1 difference in individuals without functional recovery (t = 1.21; P = .239) and low self-efficacy (t = 1.72; P = .103). CONCLUSIONS: Our study shows that rehabilitation outcomes and self-efficacy may influence mood, but not vice versa. Thus, to potentiate self-efficacy in the rehabilitation setting may help clinicians in obtaining better functional outcomes, including depression reduction.

Shaping neuroplasticity by using powered exoskeletons in patients with stroke: a randomized clinical trial.

BACKGROUND: The use of neurorobotic devices may improve gait recovery by entraining specific brain plasticity mechanisms, which may be a key issue for successful rehabilitation using such approach. We assessed whether the wearable exoskeleton, Ekso™, could get higher gait performance than conventional overground gait training (OGT) in patients with hemiparesis due to stroke in a chronic phase, and foster the recovery of specific brain plasticity mechanisms. METHODS: We enrolled forty patients in a prospective, pre-post, randomized clinical study. Twenty patients underwent Ekso™ gait training (EGT) (45-min/session, five times/week), in addition to overground gait therapy, whilst 20 patients practiced an OGT of the same duration. All individuals were evaluated about gait performance (10 m walking test), gait cycle, muscle activation pattern (by recording surface electromyography from lower limb muscles), frontoparietal effective connectivity (FPEC) by using EEG, cortico-spinal excitability (CSE), and sensory-motor integration (SMI) from both primary motor areas by using Transcranial Magnetic Stimulation paradigm before and after the gait training. RESULTS: A significant effect size was found in the EGT-induced improvement in the 10 m walking test (d = 0.9, p < 0.001), CSE in the affected side (d = 0.7, p = 0.001), SMI in the affected side (d = 0.5, p = 0.03), overall gait quality (d = 0.8, p = 0.001), hip and knee muscle activation (d = 0.8, p = 0.001), and FPEC (d = 0.8, p = 0.001). The strengthening of FPEC (r = 0.601, p < 0.001), the increase of SMI in the affected side (r = 0.554, p < 0.001), and the decrease of SMI in the unaffected side (r = - 0.540, p < 0.001) were the most important factors correlated with the clinical improvement. CONCLUSIONS: Ekso™ gait training seems promising in gait rehabilitation for post-stroke patients, besides OGT. Our study proposes a putative neurophysiological basis supporting Ekso™ after-effects. This knowledge may be useful to plan highly patient-tailored gait rehabilitation protocols. TRIAL REGISTRATION: ClinicalTrials.gov , NCT03162263 .

Breakthroughs in the spasticity management: Are non-pharmacological treatments the future?

The present paper aims at providing an objective narrative review of the existing non-pharmacological treatments for spasticity. Whereas pharmacologic and conventional physiotherapy approaches result well effective in managing spasticity due to stroke, multiple sclerosis, traumatic brain injury, cerebral palsy and incomplete spinal cord injury, the real usefulness of the non-pharmacological ones is still debated. We performed a narrative literature review of the contribution of non-pharmacological treatments to spasticity management, focusing on the role of non-invasive neurostimulation protocols (NINM). Spasticity therapeutic options available to the physicians include various pharmacological and non-pharmacological approaches (including NINM and vibration therapy), aimed at achieving functional goals for patients and their caregivers. A successful treatment of spasticity depends on a clear comprehension of the underlying pathophysiology, the natural history, and the impact on patient's performances. Even though further studies aimed at validating non-pharmacological treatments for spasticity should be fostered, there is growing evidence supporting the usefulness of non-pharmacologic approaches in significantly helping conventional treatments (physiotherapy and drugs) to reduce spasticity and improving patient's quality of life. Hence, non-pharmacological treatments should be considered as a crucial part of an effective management of spasticity.