Virtual reality is a promising therapy tool for walking activities in pediatric neurorehabilitation: Evaluation of usability and user experience (Preprint)

To see or not to see: Does foot visualization in immersive virtual reality influence gait parameters of youths with neuromotor impairments when performing walking-related activities?

BACKGROUND

Immersive virtual reality (VR) experienced through a head-mounted display (HMD) offers the possibility to practice real-world situations in a safe and motivating way in pediatric neurorehabilitation. As the HMD blocks the view of the physical world, patients lack visual feedback of their body parts. Foot visualization in the virtual environment could inform patients about their feet's position during walking-related activities.

RESEARCH QUESTION

How does foot visualization affect spatial gait parameters of youths with neuromotor gait impairments during everyday walking tasks with an immersive VR-HMD?

METHODS

In this cross-sectional study, 15 youths with neuromotor gait impairments (mean age 12.3 years) performed four walking-related tasks wearing the VR-HMD Meta Quest 2. Walking through the virtual environment, they had to place their feet as accurately as possible on bollards, step over a plank, balance over a beam, and cross a gap. We used a Vicon motion capture system to assess spatial gait parameters when the participants could not see their feet and when a real-time virtual model of their feet was integrated into the virtual environment.

RESULTS

In the bollard task, foot visualization had a large positive effect (Hedges' g = 0.82) on the foot placement accuracy, with a reduction in deviation from the bollard center from 12.1 cm (IQR: 16 cm) to 6.5 cm (IQR: 5.1 cm) (p < 0.001). Further, the maximum step height of the leading foot when overstepping the plank decreased by 2.9 cm (g = 0.4, p = 0.05). Foot visualization did not influence the spatial gait parameters when balancing over a beam or crossing a gap.

SIGNIFICANCE

Pediatric patients who practice walking-related activities with an immersive VR-HMD can benefit from foot visualization, as it increases foot placement accuracy for certain tasks. However, technical solutions have to become simpler for the clinical implementation of foot visualization.

Immersive virtual reality rehabilitation after lower limb surgery in paediatric patients

PurposePatients who have undergone lower limb surgery require rehabilitation to regain movement and function in the affected leg. Unfortunately, physical rehabilitation can be painful, reducing compliance and recovery. This feasibility study aimed to demonstrate that immersive virtual reality (IVR) applications can provide potential benefits of anxiety reduction and pain distraction for children during gait rehabilitation, increased engagement and enjoyment, and improved perceived walking quality.MethodsThis study included 15 children aged 11-16 who required weight-bearing rehabilitation following lower limb surgery. A mixed methods (quantitative and qualitative) approach and a multidirectional perspective (patients, parents and physiotherapists) were adopted to measure. Changes in anxiety (General Anxiety Disorder-7) and pain (visual analogue scale) before and after the intervention were assessed. Qualitative data were collected through interviews with children, their parents, and physiotherapists, focusing on their experiences, satisfaction, perceived effectiveness, and acceptability of the IVR intervention.ResultsResults demonstrated that IVR for rehabilitation after lower limb surgery in children (1) reduced anticipatory anxiety; (2) reduced the level of pain experienced during gait rehabilitation; (3) improved rehabilitation, such that children were walking more than expected and with better quality; (4) increased confidence; (5) made rehabilitation more enjoyable; and (6) was delivered via a system that was easy to learn and accept.ConclusionThis rehabilitation IVR is the first product of its class for paediatric lower limb postoperative rehabilitation. These preliminary results will inform improvements to the system in a future multi-site study with a large calculated sample size to demonstrate its clinical effectiveness and safety in acquiring medical device markings and adoption.

Efficacy of videogames and exergames in pediatric neurorehabilitation: a systematic review

INTRODUCTION

In recent years, the rehabilitation of children with neurological disorders has taken into account the possibility of using videogaming consoles and virtual reality systems to make children's therapy more enjoyable, motivating, participated and effective. This study aims at conducting a systematic review about the use and the efficacy of digital games in pediatric neurorehabilitation.

EVIDENCE ACQUISITION

In accordance with the PRISMA approach, a rather wide-ranging search was conducted on PubMed, Scopus, and Web of Science databases by using different combinations of keywords based on MeSH terms.

EVIDENCE SYNTHESIS

Fifty-five papers have been included into this review, namely, 38 original studies and 17 reviews. The total number of children and adolescents is 573, with 58% of them being affected by cerebral palsy. Despite a wide variability in the adopted protocols, devices, assessment tools, and a more frequent focus on motor aspects than on cognitive ones, the results of the majority of the analyzed studies support the safety (i.e., absence of severe adverse effects) and efficacy of the videogame-based therapy.

CONCLUSIONS

Videogames, when administered by means of commercial consoles or ad-hoc digital systems, seem to be a valid support for physical therapy. Further researchers are needed to deeply investigate the role of this approach in cognitive therapy and cognitive outcomes.

Revolutionizing Care: Unleashing the Potential of Digital Health Technology in Physiotherapy Management for People With Cystic Fibrosis

Unlabelled

This viewpoint paper explores the dynamic intersection of physiotherapy and digital health technologies (DHTs) in enhancing the care of people with cystic fibrosis (CF), in the context of advancements such as highly effective modulator therapies that are enhancing life expectancy and altering physiotherapy needs. The role of DHTs, including telehealth, surveillance, home monitoring, and activity promotion, has expanded, becoming crucial in overcoming geographical barriers and accelerated by the recent pandemic. Physiotherapy, integral to CF care since 1946, has shifted toward patient-centered approaches, emphasizing exercise training and a physically active lifestyle. The reduction in inpatient admissions due to highly effective modulator therapies has led to increased home care and online or electronic consultations, and DHTs have revolutionized service delivery, offering flexibility, self-management, and personalized care options; however, there is a need to comprehensively understand user experiences from both people with CF and physiotherapists. This paper highlights the essential exploration of user experiences to facilitate clinician adaptation to the digital requirements of modern clinical management, ensuring equitable care in the "future hospitals" arena. Identifying research gaps, this paper emphasizes the need for a thorough evaluation of DHT use in CF physiotherapy education, training, and self-monitoring, as well as the experiences of people with CF with online or electronic consultations, self-monitoring, and remote interventions. Online group exercise platforms address historical challenges relating to infection control but necessitate comprehensive evaluations of user experiences and preferences. Future-proofing DHTs within the physiotherapy management of CF demands a shift toward full integration, considering stakeholder opinions and addressing barriers. While DHTs have the potential to extend physiotherapy beyond the hospital, this paper stresses the importance of understanding user experiences, addressing digital poverty, and working toward more equitable health care access. A flexible approach in the "future hospital" is advocated, emphasizing the need for a nuanced understanding of user preferences and experiences to optimize the integration of DHTs in CF care.

Safety of virtual reality use in children: a systematic review

The study aimed to systematically review available literature regarding the safety of virtual reality (VR) use via head-mounted display in children under 14 years of age. The study was a systematic review including all study designs. A search was conducted in January 2023 in PubMed and EMBASE using key terms referring to 'virtual reality', 'paediatrics' and 'safety'.  Following title and abstract and full-text screening, data were extracted and a narrative synthesis undertaken. Twenty-six studies met criteria for inclusion in the final review.  Limited data suggest that VR may cause mild cybersickness symptoms (not severe enough to cause participants to discontinue use of VR) and that for children with existing amblyopia using VR may result in double vision, which resolves on cessation of VR exposure.  Two randomised control trials did not report differences in adverse events between the intervention (VR use) and control groups. Reporting of safety data was poor; only two studies used a validated measure, and in the remaining studies, it was often unclear how adverse events were defined (if at all), how they were categorised in terms of severity and how they were recorded.     Conclusion: There is limited evidence regarding any potential harms from short exposure to VR in children under 14 years under supervision. Additional research is required to understand increases in cybersickness during and after VR exposure, and the impact of repeated exposure.  Adverse events need to be accurately and routinely recorded to determine any hitherto unknown safety concerns for children < 14 years using VR. What is Known: • Virtual reality (VR) is increasingly being applied in paediatrics, with benefits in terms of anxiety reduction, improved pain management associated with procedures, as an adjunct to physiotherapy and supporting treatments in autistic spectrum disorder.. • Safety guidance in relation to VR use, particularly in younger children, is limited. What is New: • A systematic review of available literature regarding the safety of VR use via head-mounted display in children under 14 years of age demonstrated limited evidence regarding any potential harms from short exposure to VR.. • Studies rarely report safety data and adverse side effects are poorly defined, measured and/or reported. • The lack of a validated measure for evaluating VR-associated symptoms in children compounds the challenging ethical issues of undertaking research into the effects of VR on younger children.

Comparing Walking-Related Everyday Life Tasks of Children with Gait Disorders in a Virtual Reality Setup With a Physical Setup: Cross-Sectional Noninferiority Study

BACKGROUND

A frequent rehabilitation goal for children with gait disorders is to practice daily-life walking activities. Unfortunately, these are often difficult to practice in a conventional therapeutic setting. Virtual reality (VR) with head-mounted displays (HMDs) could be a promising approach in neurorehabilitation to train such activities in a safe environment. First, however, we must know whether obstacles in VR are indeed mastered as obstacles.

OBJECTIVE

This study aimed to provide information on whether VR is feasible and motivating to induce and practice movements needed to master real obstacles in children and adolescents with gait disorders. Furthermore, this project aims to evaluate which kinds of everyday walking activities are appropriate to be practiced in VR.

METHODS

In this cross-sectional study, participants stepped over a bar, crossed a gap, balanced over a beam, and circumvented stationary obstructions arranged in a course under real physical and virtual conditions wearing a VR HMD. We recorded the respective primary outcomes (step height, step length, step width, and minimal shoulder-obstacle distance) with motion capture. We then calculated the mean differences and 95% CI of the spatiotemporal parameters between the VR and physical setup and later compared them using noninferiority analysis with margins defined a priori by a clinical expert panel. Additionally, the participants responded to a standardized questionnaire while the therapists observed and evaluated their movement performance.

RESULTS

We recruited 20 participants (mean age 12.0, range 6.6-17.8 years) with various diagnoses affecting their walking ability. At 3.77 (95% CI 1.28 to 6.26) cm, the mean difference in step height of the leading foot in the overstepping task did not exceed the predefined margin of -2 cm, thus signifying noninferiority of the VR condition compared to mastering the physical obstacles. The same was true for step length (-1.75, 95% CI -4.91 to 1.41 cm; margin -10 cm), step width (1.05, 95% CI 0.20 to -1.90 cm; margin 3 cm), and the minimal shoulder-obstacle distance (0.25, 95% CI -0.85 to 0.35 cm; margin -2 cm) in the other tasks. Only the trailing foot in the overstepping task yielded inconclusive results.

CONCLUSIONS

Children with gait disorders perform everyday walking tasks like overstepping, crossing, balancing, or circumventing similarly in physical and VR environments, suggesting that VR could be a feasible therapeutic tool to practice everyday walking tasks.

Areas of Research Focus and Trends in the Research on the Application of VR in Rehabilitation Medicine

OBJECTIVE

To establish the areas of research focus in the application of VR in rehabilitation medicine, analyze its themes and trends, and offer a reference for future related research in this field.

METHODS

This paper provides an in-depth analysis of the development process, areas of research focus, and research trends in the field of the application of VR in rehabilitation medicine, using the Web of Science core dataset as the source and using a bibliometric analysis with CiteSpace.

RESULTS

The application of VR in rehabilitation medicine was composed of three stages, and the research topics were reviewed from five perspectives: neurological rehabilitation, psychological treatment, pain distraction, cardiopulmonary rehabilitation, and visual-spatial disorder.

LIMITATIONS

The research data were sourced from the Web of Science core dataset only, and the data-sample size was not comprehensive.

CONCLUSIONS

Overcoming VR-technology-induced vertigo, mental disorders from the overuse of VR, individualized treatments, and integration with traditional therapy are all challenges in the application of VR in rehabilitation medicine that require research. In addition, developing VR products with better experiences, constructing standardized guidelines, and conducting more high-quality clinical studies are all future research topics related to the application of VR in rehabilitation medicine.

Acceptability of wearable devices for measuring mobility remotely: Observations from the Mobilise-D technical validation study

Background

This study aimed to explore the acceptability of a wearable device for remotely measuring mobility in the Mobilise-D technical validation study (TVS), and to explore the acceptability of using digital tools to monitor health.

Methods

Participants (N = 106) in the TVS wore a waist-worn device (McRoberts Dynaport MM + ) for one week. Following this, acceptability of the device was measured using two questionnaires: The Comfort Rating Scale (CRS) and a previously validated questionnaire. A subset of participants (n = 36) also completed semi-structured interviews to further determine device acceptability and to explore their opinions of the use of digital tools to monitor their health. Questionnaire results were analysed descriptively and interviews using a content analysis.

Results

The device was considered both comfortable (median CRS (IQR; min-max) = 0.0 (0.0; 0-20) on a scale from 0-20 where lower scores signify better comfort) and acceptable (5.0 (0.5; 3.0-5.0) on a scale from 1-5 where higher scores signify better acceptability). Interviews showed it was easy to use, did not interfere with daily activities, and was comfortable. The following themes emerged from participants' as being important to digital technology: altered expectations for themselves, the use of technology, trust, and communication with healthcare professionals.

Conclusions

Digital tools may bridge existing communication gaps between patients and clinicians and participants are open to this. This work indicates that waist-worn devices are supported, but further work with patient advisors should be undertaken to understand some of the key issues highlighted. This will form part of the ongoing work of the Mobilise-D consortium.