Lightweight and ultralight wheelchairs: propulsion and preferences of two young children with spina bifida

Isokinetic arm and shoulder muscle torque-velocity characteristics in mobility limited children and adolescents with spina bifida

INTRODUCTION

Propulsive wheelchair capacity may be influenced by arm muscle performance.Objectives: To determine whether children and adolescent wheelchair-users with spina bifida show reduced arm muscle strength compared to their typically developing peers and to compare muscle strength data obtained by isokinetic and handheld dynamometry (HHD).

METHODS

Participants (mean age 12.5 ± 2.5 years) were assigned to spina bifida (SB; n = 11) or control (n = 22) groups. Isokinetic dynamometry was used to measure peak torque (PT) during dynamic (60°s-1 and 120°s-1) and isometric strength testing (MVIC) for shoulder and elbow flexors and extensors. HHD was used to measure MVIC of the same muscle groups.

RESULTS

SB showed reduced isokinetic PT for shoulder extensors at 60°s-1 and 120°s-1, shoulder flexor MVIC, and elbow flexors at 60°s-1 and MVIC; higher PT for shoulder flexors and elbow flexors at 120°s-1; and decreased MVIC for elbow flexors but not extensors compared to controls when assessed by HHD. The SB and control groups showed strong positive correlations between MVIC data obtained by the two devices for all muscle groups (r ≥ 0.81; p < .01), except for shoulder flexor MVIC in controls (r = 0.68; p < .01).

CONCLUSION

SB presented reduced levels of dynamic slow-speed and isometric shoulder and elbow muscle strength and greater dynamic high-speed shoulder and elbow flexor strength than controls possibly due to the exposure to self-sustained wheelchair ambulation. Exercise-based intervention protocols to increase slow-speed arm muscle strength should be considered in youth with SB. Strong positive correlations observed between muscle strength assessed by isokinetic dynamometry and HHD support the use of HHD in this clinical population.

Scoping review of propelling aids for manual wheelchairs

Manual wheelchair (MWC) users face a variety of obstacles limiting their participation. Different MWC models and new add-on components intended to improve propulsion may impact users' function and participation, although there is a lack of research on this topic. The aims of this study were to: 1) identify MWC propelling aids (PA) that are reported in the literature; 2) classify the outcomes used to evaluate the influence of PA according to the International Classification of Functioning, Disability and Health (ICF); and 3) summarize evidence for the influence of PA. A scoping review was conducted in 2017 using Pubmed, Medline, Embase, CINAHL, Compendex, IEEE Xplore, RESNA and ISS proceedings, Google, and Google Scholar. The content of each manuscript was assessed by two independent reviewers. A total of 28 PA (19 human-powered; 9 power-assisted) were identified from 163 manuscripts. The three most cited ICF subdomains were "Activity & Participation" (n = 125), "Body Function" (n = 100), and "Personal Factors" (n = 55). The findings suggest an overall positive influence of PA on various ICF domains/subdomains, but initial findings should be interpreted with caution. Confirmation of the effect and safety of PA requires higher levels of evidence.

Use of single-subject research designs in seating and wheeled mobility research: a scoping review

Background: Evidence-based practice (EBP) in seating and wheeled mobility practice is often hindered by a dearth of published research.Purpose: The purpose of this review was to explore and critically appraise the use of single-subject research designs (SSRDs) in seating and wheeled mobility studies published between January 1995 and May 2018.Study Selection: Primary source, peer-reviewed SSRDs focused on exploring the impact of a seating and wheeled mobility intervention were included in the review.Data Extraction: Relevant data extraction, determination of level of evidence, evaluation of methodological rigor, and assessment of the risk of bias were each independently performed.Data Synthesis: The review yielded 19 studies (2 Level III, 15 Level IV, and 2 Level V). A majority of these studies incorporated a withdrawal-type of SSRD and involved subjects representing patient populations with seating and wheeled mobility needs. Methodological rigor/quality features most commonly absent in the included studies included: blinding/masking, inter-rater or intra-rater reliability, >5 data points in each phase, planned replication (≥3 subjects), procedural fidelity methods, randomization, stability of the data during baseline, statistical analyses and use of subject selection criteria. The limited number of published SSRDs, combined with the lower levels of evidence (Levels III-V) provided by these studies, indicates that the use of SSRDs in seating and wheeled mobility research is in the early stages of development.Conclusions: Increasing the methodological quality and rigor as well as reporting methods in future SSRDs involving seating and wheeled mobility interventions may help to support EBP in this area.Implications for RehabilitationSingle-subject research designs (SSRDs) offer both researchers and clinicians the opportunity to contribute to the existing knowledge base in ways that reflect actual clinical practice.SSRDs provide flexibility in adapting and modifying seating and wheeled mobility-related assistive technology devices to meet the individual needs of specific subjects.SSRDs preserve individual responses to seating and wheeled mobility-related assistive technology devices.SSRDs may help to enhance evidence-based practice (EBP) in seating and wheeled mobility practice by spanning the divide between research and practice.Increasing the methodological quality and rigor as well as reporting methods in future SSRDs may help to support EBP in seating and wheeled mobility practice.

Wheelchair interventions, services and provision for disabled children: a mixed-method systematic review and conceptual framework

Background

Wheelchairs for disabled children (≤18 years) can provide health, developmental and social benefits. World Health Organisation and United Kingdom Government reports demonstrate the need for improved access to wheelchairs both locally and internationally. The use of health economics within this field is lacking. Provision of wheelchairs based on cost-effectiveness evidence is not currently possible. We conducted the first systematic review in this field to incorporate evidence of effectiveness, service user perspectives, policy intentions and cost-effectiveness in order to develop a conceptual framework to inform future research and service development.

Methods

We used an adapted EPPI-Centre mixed-method systematic review design with narrative summary, thematic and narrative synthesis. 11 databases were searched. Studies were appraised for quality using one of seven appropriate tools. A conceptual framework was developed from synthesised evidence.

Results

22 studies and 14 policies/guidelines were included. Powered wheelchairs appear to offer benefits in reduced need for caregiver assistance; improved communicative, personal-social and cognitive development; and improved mobility function and independent movement. From 14 months of age children can learn some degree of powered wheelchair driving competence. However, effectiveness evidence was limited and low quality. Children and parents placed emphasis on improving social skill and independence. Participation in wider society and development of meaningful relationships were key desired outcomes. Policy intentions and aspirations are in line with the perspectives of children and parents, although translation of policy recommendations into practice is lacking.

Conclusions

There is a distinct lack of high quality effectiveness and economic evidence in this field. Social and health needs should be seen as equally important when assessing the mobility needs of disabled children. Disabled children and parents placed highest priority on independence and psychosocial outcomes of wheelchair interventions. Translation of policy and guidelines into practice is lacking and more effective implementation strategies are required to improve services and outcomes. Future research should focus on outcome measure development, developing economic evaluation tools and incorporating these into high quality studies to address known research gaps. The novel conceptual framework maps current gaps in evidence and outlines areas for development.