Posts Tagged Virtual reality exposure therapy
[ARTICLE] Effects of virtual reality therapy on upper limb function after stroke and the role of neuroimaging as a predictor of a better response – Full Text
Virtual reality therapy (VRT) is an interactive intervention that induces neuroplasticity. The aim was to evaluate the effects of VRT associated with conventional rehabilitation for an upper limb after stroke, and the neuroimaging predictors of a better response to VRT.
Patients with stroke were selected, and clinical neurological, upper limb function, and quality of life were evaluated. Statistical analysis was performed using a linear model comparing pre- and post-VRT. Lesions were segmented in the post-stroke computed tomography. A voxel-based lesion-symptom mapping approach was used to investigate the relationship between the lesion and upper limb function.
Eighteen patients were studied (55.5 ± 13.9 years of age). Quality of life, functional independence, and dexterity of the upper limb showed improvement after VRT (p < 0.001). Neuroimaging analysis showed negative correlations between the internal capsule lesion and functional recovery.
VRT showed benefits for patients with stroke, but when there was an internal capsule lesion, a worse response was observed.
Stroke can be defined as a neurological deficit resulting from focal and acute central nervous system injury. It is considered a major cause of mortality and disability worldwide1. Stroke is the second leading cause of death in Brazil and the leading cause of chronic disability in adults, resulting in socioeconomic consequences and reduced quality of life. Therefore, it is an important public health problem, particularly because of long-term dependence on public health services2,3.
Cerebrovascular injury may damage the cells of the cortex and emerging axons, generating dysfunction of the upper motor neurons. Motor function can be impaired, reducing functional capacity, particularly that of the upper limbs4. Approximately 85% of individuals experience hemiparesis immediately after the stroke, particularly in an upper limb, and 55%–75% of these individuals have persistence of motor deficits, making it difficult to return to work and leisure, consequently worsening their quality of life5.
Epidemiological clinical studies have suggested that 33%–66% of stroke patients had no motor recovery after six months. Several techniques aiming to improve upper limb function are still being developed. However, the implementation of these techniques requires great team work, a high degree of specialization, and requires more time5,6. Currently, there are new approaches to rehabilitation, and virtual reality is still developing, with the objective of restoring the functional capacity of individuals after stroke as an easy, interactive, and low-cost intervention7,8.
The objective of stroke rehabilitation is to provide maximal physical, functional, and psychosocial recovery for the patients9. Comprehensive rehabilitation initiated early after stroke (within the first 24 hours) is generally accepted as being associated with better motor outcomes for these patients9. Strength training is an important part of the therapeutic process for upper-limb motor impairment after stroke10.
Virtual reality is defined as any hardware or software system that provides a simulated environment with real or imagined conditions that allow participating individuals to interact with the environment. The interaction is made by body movements using motion capture technology or by manipulating a device11. This interaction generates information necessary for proper understanding of the movement with particular emphasis on the upper limbs12. The technique consists of an avatar (graphic representation of the person) generated by the video game, where the individual manages a wireless control, directing the movement during the practice of different activities5. This is a good option for rehabilitation for individuals with stroke due to the variety of nonimmersive video game systems developed by the entertainment industry for home use.
This wide availability makes virtual reality an accessible and inexpensive rehabilitation method for rehabilitation centers13. Despite the ease of application, virtual reality therapy (VRT), added to conventional physical therapy has not been associated with a better outcome than recreational activity13. Adverse events usually are mild and the main effects described are transient dizziness and headache, pain and numbness13,14. Time since the onset of stroke, severity of impairment, and the type of device (commercial or customized) usually do not influence the outcome14. However, the variable methodology is an important bias for these investigations14. Therefore, virtual reality is still a promising tool. Some authors have reported that VRT can be combined with conventional rehabilitation to improve upper limb function after stroke15,16. The clinical situations wherein VRT may best be used have not yet been established in the literature. Also, the exact mechanism of action of this treatment modality is not yet fully understood.
The objectives of this study were to evaluate the effects of VRT combined with conventional rehabilitation for upper limb function in the recovery of individuals after stroke. Neuroimaging characteristics that could be used as predictors of a better response to VRT were also investigated.[…]
[ARTICLE] Game-Based Virtual Reality Canoe Paddling Training to Improve Postural Balance and Upper Extremity Function: A Preliminary Randomized Controlled Study of 30 Patients with Subacute Stroke – Full Text
Virtual reality (VR) training with motion-controlled console games can be incorporated into stroke rehabilitation programs. The use of a variety of gaming software can provide the patient with an opportunity to perform activities that are exciting, entertaining, and that may not be feasible in clinical environments. The aim of this preliminary randomized controlled study was to investigate the effects of game-based VR canoe paddling training, when combined with conventional physical rehabilitation programs, on postural balance and upper extremity function in 30 patients with subacute stroke.
Thirty patients, who were within six months following the diagnosis of stroke, were randomly allocated to either the experimental group (n=15) or the control group (n=15). All participants participated in a conventional rehabilitation program. Also, the experimental group (n=15) performed the VR canoe paddling training for 30 minutes each day, three times per week, for five weeks. After five weeks, outcomes of changes in postural balance and upper extremity function were evaluated and compared between the two groups.
At five weeks, postural balance and upper extremity function showed significant improvements in both patients groups when compared with the baseline measurements (p<0.05). However, postural balance and upper extremity function were significantly improved in the experimental group when compared with the control group (p<0.05).
Game-based VR canoe paddling training is an effective rehabilitation therapy that enhances postural balance and upper extremity function in patients with subacute stroke when combined with conventional physical rehabilitation programs.
The maintenance of the core or upper body control, is essential for maintaining posture and stability while changing positions, performing activities of daily living (ADL), and ambulating [1,2]. Patients who are undergoing physical rehabilitation following stroke, tend to deviate towards the affected side, as a result of postural instability, which induces both asymmetrical trunk movement and trunk muscle weakness. Upper body instability makes it difficult to maintain postural control when performing tasks and leads to functional disability . The lack of postural stability also affects the balance of patients following stroke, increasing the risk of falls, and negatively impacting on patient independence and safety. For example, it has been reported that up to 73% of patients with stroke experience a fall within six months after leaving hospital . Falls following a stroke can have severe consequences, including hip fractures and reduced physical activity due to fear of repeat falls . Therefore, because these factors can have a negative impact on patient rehabilitation following stroke, the improvement of postural stability is an important goal of patient rehabilitation following stroke .
Sports that involve paddling with a single oar, such as canoeing and kayaking, are effective outdoor activities that improve postural stability and upper body stabilization . Continuous body adjustment and compensation are required during the single-oar paddling motion to maintain balance during perturbations caused by the movement of the canoe or kayak and the paddle in the water . Currently, canoe paddling training can be conducted using an ergometer to provide a training opportunity that is independent of outdoor conditions and to better control training progression . A paddling ergometer has also been studied for rehabilitation training of patients with paraplegia and has been shown to be effective in improving postural control, balance, motor performance, and upper extremity strength [8,9].
Game-based virtual reality (VR) using gaming consoles is now used as a therapeutic approach for the rehabilitation of patients with stroke and provides an opportunity for patients to perform activities that are difficult in a clinical setting. Furthermore, VR programs are often designed to be more entertaining and enjoyable than traditional physical therapy tasks, thereby encouraging patients to participate in the rehabilitation program.
The use of VR equipment specifically designed for physical rehabilitation is not yet commonly available in clinical settings. Therefore, VR rehabilitation programs using a game-based, motion-controlled console that can be used in clinical settings and at low cost that can utilize a variety of gaming software are needed.
The aim of this preliminary randomized controlled study was to investigate the effects of game-based VR canoe paddling training, when combined with conventional physical rehabilitation programs, on postural balance and upper extremity function in 30 patients with subacute stroke.[…]
[Abstract] Virtual reality and neuropsychological assessment: The reliability of a virtual kitchen to assess daily-life activities in victims of traumatic brain injury
Traumatic brain injury (TBI) causes impairments affecting instrumental activities of daily living (IADL). However, few studies have considered virtual reality as an ecologically valid tool for the assessment of IADL in patients who have sustained a TBI. The main objective of the present study was to examine the use of the Nonimmersive Virtual Coffee Task (NI-VCT) for IADL assessment in patients with TBI. We analyzed the performance of 19 adults suffering from TBI and 19 healthy controls (HCs) in the real and virtual tasks of making coffee with a coffee machine, as well as in global IQ and executive functions. Patients performed worse than HCs on both real and virtual tasks and on all tests of executive functions. Correlation analyses revealed that NI-VCT scores were related to scores on the real task. Moreover, regression analyses demonstrated that performance on NI-VCT matched real-task performance. Our results support the idea that the virtual kitchen is a valid tool for IADL assessment in patients who have sustained a TBI.
via Virtual reality and neuropsychological assessment: The reliability of a virtual kitchen to assess daily-life activities in victims of traumatic brain injury: Applied Neuropsychology: Adult: Vol 23, No 3
To evaluate in the follow-up the sensory-motor recovery and quality of life patients 2 months after completion of the Nintendo Wii console intervention and determine whether learning retention was obtained through the technique.
Five hemiplegics patients participated in the study, of whom 3 were male with an average age of 54.8 years (SD = 4.6). Everyone practiced Nintendo Wii therapy for 2 months (50 minutes/day, 2 times/week, during 16 sessions). Each session lasting 60 minutes, under a protocol in which only the games played were changed, plus 10 minutes of stretching. In the first session, tennis and hula hoop games were used; in the second session, football (soccer) and boxing were used. For the evaluation, the Fulg-Meyer and Short Form Health Survey 36 (SF-36) scales were utilized. The patients were immediately evaluated upon the conclusion of the intervention and 2 months after the second evaluation (follow-up).
Values for the upper limb motor function sub-items and total score in the Fugl–Meyer scale evaluation and functional capacity in the SF-36 questionnaire were sustained, indicating a possible maintenance of the therapeutic effects.
The results suggest that after Nintendo Wii therapy, patients had motor learning retention, achieving a sustained benefit through the technique.
[ARTICLE] Effects of Virtual Reality Exercise Program on Balance, Emotion and Quality of Life in Patients with Cognitive Decline
[ARTICLE] Improving executive function deficits by playing interactive video-games: secondary analysis of a randomized controlled trial for individuals with chronic stroke
BACKGROUND: Executive function deficits negatively impact independence and participation in everyday life of individuals with chronic stroke. Therefore, it is important to explore therapeutic interventions to improve executive functions.
AIM: The aim of this study was to determine the effectiveness of a 3-month interactive video-game group intervention compared to a traditional motor group intervention for improving executive functions in individuals with chronic stroke.
DESIGN: This study is a secondary analysis of a single-blind randomized controlled trial for improving factors related to physical activity of individuals with chronic stroke. Assessments were administered pre and post the intervention and at 3-month follow-up by assessors blind to treatment allocation.
METHODS: Thirty-nine individuals with chronic stroke with executive function deficits participated in an interactive video-game group intervention (N.=20) or a traditional group intervention (N.=19). The intervention included two 1-hour group sessions per week for three months, either playing video-games or performing traditional exercises/activities. Executive function deficits were assessed using The Trail Making Test (Parts A and B) and by two performance-based assessments; the Bill Paying Task from the Executive Function Performance Test (EFPT) and the Executive Function Route-Finding Task (EFRT).
RESULTS: Following intervention, scores for the Bill Paying Task (EFPT) decreased by 27.5% and 36.6% for the participants in the video-game and traditional intervention, respectively (F=17.3, P<0.000) and continued to decrease in the video-game group with small effect sizes. Effect size was small to medium for the TMT-B (F=0.003, P=0.954) and EFRT (F=1.2, P=0.28), without any statistical significance difference.
CONCLUSIONS: Interactive video-games provide combined cognitive-motor stimulation and therefore have potential to improve executive functioning of individuals with chronic stroke. Further research is needed.
CLINICAL REHABILITATION IMPACT: These findings highlight the potential of utilizing interactive video-games in a small group for keeping these individuals active, while maintaining and improving executive functioning especially for individuals with chronic stroke, who have completed their formal rehabilitation.
Source: Improving executive function deficits by playing interactive video-games: secondary analysis of a randomized controlled trial for individuals with chronic stroke – European Journal of Physical and Rehabilitation Medicine 2016 August;52(4):508-15 – Minerva Medica – Journals
Introduction: This article is part of the Focus Theme of Methods of Information in Medicine on “Methodologies, Models and Algorithms for Patients Rehabilitation”.
Objectives: To identify support of a virtual reality system in the kinematic assessment and physiotherapy approach to gait disorders in individuals with stroke.
Methods: We adapt Virtual Reality Rehabilitation System (VRRS), software widely used in the functional recovery of the upper limb, for its use on the lower limb of hemiplegic patients. Clinical scales have been used to relate them with the kinematic assessment provided by the system. A description of the use of reinforced feedback provided by the system on the recovery of deficits in several real cases in the field of physiotherapy is performed. Specific examples of functional tasks have been detailed, to be considered in creating intelligent health technologies to improve post-stroke gait.
Results: Both participants improved scores on the clinical scales, the kinematic parameters in leg stance on plegic lower extremity and walking speed > Minimally Clinically Important Difference (MCID).
Conclusion: The use of the VRRS software attached to a motion tracking capture system showed their practical utility and safety in enriching physiotherapeutic assessment and treatment in post-stroke gait disorders.
[Abstract] Virtual rehabilitation via Nintendo Wii® and conventional physical therapy effectively treat post-stroke hemiparetic patients
Background: The Nintendo® Wii is a simple and affordable virtual therapy alternative. It may be used at home, and it is a motivating recreational activity that provides continuous feedback. However, studies comparing the use of the Nintendo® Wii to conventional physical therapy are needed.
Objective: To compare the effect of a rehabilitation treatment using the Nintendo® Wii (NW) with conventional physical therapy (CPT) to improve the sensorimotor function and quality of life for post-stroke hemiparetic patients.
Methods: The present study applied a randomized, blind, and controlled clinical trial. In total, 30 patients with post-stroke hemiparesis were evaluated. A total of 15 patients were randomly assigned to each group. The SF-36 quality of life and Fugl–Meyer scales were used to evaluate the patients.
Results: After treatment, the only variable that differed between the groups was the physical functioning domain of the SF-36 in the group that received conventional physical therapy. A significant difference was observed between both groups before and after treatment in terms of the following Fugl–Meyer scale items: passive movement and pain, motor function of the upper limbs (ULs), and balance. The CPT group also showed a significant difference with regard to their UL and lower limb (LL) coordination. The SF-36 scale analysis revealed a significant difference within both groups with regard to the following domains: physical functioning, role limitation due to physical aspects, vitality, and role limitation due to emotional aspects. The NW group also exhibited a significant difference in the mental health domain. The results indicate that both approaches improved the patients’ performance in a similar manner.
Conclusion: Virtual rehabilitation using the Nintendo Wii® and CPT both effectively treat post-stroke hemiparetic patients by improving passive movement and pain scores, motor function of the upper limb, balance, physical functioning, vitality, and the physical and emotional aspects of role functioning.
Source: Maney Online – Maney Publishing
To evaluate the effectiveness of the video game console Nintendo Wii (NW) in motor function, balance, and functional independence in the treatment of poststroke patients and to identify which games are commonly used in therapy.
Randomized controlled trials were researched in MEDLINE, Cochrane Library, PEDro, CAPES Periodic, BIREME, and LILACS databases, covering publications up to March 31, 2014. The assessment of methodological quality was performed using the PEDro Scale as reference.
The 5 studies included for analysis showed that NW can provide an improvement of motor function of the individual, but the data are unclear when it comes to the balance and functional independence.
It was concluded that there is little evidence to ensure the effectiveness and support the inclusion of the treatment with NW in patients with sequelae caused by a stroke; however, some of the studies analyzed suggest that NW can provide improvement in motor function.
[ARTICLE] Rehabilitation that incorporates virtual reality is more effective than standard rehabilitation for improving walking speed, balance and mobility after stroke: a systematic review – Full Text PDF
Question: In people after stroke, does virtual reality based rehabilitation (VRBR) improve walking speed, balance and mobility more than the same duration of standard rehabilitation? In people after stroke, does adding extra VRBR to standard rehabilitation improve the effects on gait, balance and mobility?
Design: Systematic review with meta-analysis of randomised trials.
Participants: Adults with a clinical diagnosis of stroke.
Intervention: Eligible trials had to include one these comparisons: VRBR replacing some or all of standard rehabilitation or VRBR used as extra rehabilitation time added to a standard rehabilitation regimen. Outcome measures: Walking speed, balance, mobility and adverse events.
Results: In total, 15 trials involving 341 participants were included. When VRBR replaced some or all of the standard rehabilitation, there were statistically significant benefits in walking speed (MD 0.15 m/s, 95% CI 0.10 to 0.19), balance (MD 2.1 points on the Berg Balance Scale, 95% CI 1.8 to 2.5) and mobility (MD 2.3 seconds on the Timed Up and Go test, 95% CI 1.2 to 3.4). When VRBR was added to standard rehabilitation, mobility showed a significant benefit (0.7 seconds on the Timed Up and Go test, 95% CI 0.4 to 1.1), but insufficient evidence was found to comment about walking speed (one trial) and balance (high heterogeneity).
Conclusion: Substituting some or all of a standard rehabilitation regimen with VRBR elicits greater benefits in walking speed, balance and mobility in people with stroke. Although the benefits are small, the extra cost of applying virtual reality to standard rehabilitation is also small, especially when spread over many patients in a clinic. Adding extra VRBR time to standard rehabilitation also has some benefits; further research is needed to determine if these benefits are clinically worthwhile. [Corbetta D, Imeri F, Gatti R (2015) Rehabilitation that incorporates virtual reality is more effective than standard rehabilitation for improving walking speed, balance and mobility after stroke: a systematic review. Journal of Physiotherapy XX: XX-XX]
via Rehabilitation that incorporates virtual reality is more effective than standard rehabilitation for improving walking speed, balance and mobility after stroke: a systematic review – Journal of Physiotherapy.