Standardized Walking Obstacle Course (SWOC): reliability and validity of a new functional measurement tool for children

Are challenging walking environments linked to falls or risk of falling in children with cerebral palsy? A systematic review

BACKGROUND

Children with cerebral palsy (CP) regularly fall over and this has negative effects on their physical and psychosocial wellbeing (e.g., reduced activity participation). However, the reasons for falls are not well understood. The way in which children negotiate challenging walking environments (e.g., uneven surfaces), may reveal more about how falls occur as these environments require gait modifications to maintain stability. Stability in challenging walking environments has been explored for children with CP; however, it remains unclear how these lead to falls.

RESEARCH QUESTION

Do challenging walking environments that mimic those faced in the real-world, contribute to increased fall occurrence and fall risk in children with CP?

METHODS

Five databases were searched, and 1386 records screened to include ambulatory children with CP, aged 5-18 years old, investigating dynamic walking in challenging environments, with outcomes of fall occurrence or fall risk. The full protocol for this review was registered on PROSPERO (CRD42021290456).

RESULTS

Sixteen studies met the inclusion criteria. One study reported occurrence of stumbles, two reported no falls. Fifteen studies identified gait alterations used by children with CP in challenging environments. Twenty-four gait characteristics were identified to be indicative of cautious walking strategies and seven gait characteristics identified to increase fall risk, suggesting a potential link. However, limited evidence exists as to whether this reflects falls faced in the real-world.

SIGNIFICANCE

Investigations into stability over challenging walking environments for children with CP are lacking any measures of fall occurrence. Investigations into the mechanisms that may contribute to high fall risk, or fall avoidance when negotiating obstacles, uneven surfaces, steep declines and stairs may reveal further causes of real-world falls, and in doing so inform future fall prevention techniques. Finally, understanding the multifaceted causes of falls in real-world challenging environments from the perspectives of children with CP is key for future research.

Psychometric properties of the Obstacles and Curb tests and their discriminative ability across functional levels in ambulatory children with spastic cerebral palsy

The Obstacles and Curb tests are timed walking assessments that have emerged from the Spinal Cord Injury Functional Ambulation Profile and have been modified for children; however, their psychometric properties have not been adequately investigated. The aim of this research was to examine the psychometric properties of the Obstacles and Curb tests for children with cerebral palsy (CP). This cross-sectional study included 68 children aged 6-12 years; there were 34 children with CP and 34 age- and sex-matched typically developing children. Validity was examined by correlation with the 10-m Walk Test (10-MWT), Modified Time Up and Go test (mTUG), and Pediatric Balance Scale (PBS). Differences in the Obstacle and Curb test scores were calculated between children with CP and typically developing children and within different Gross Motor Function Classification System (GMFCS) levels. Children with CP completed the tests twice within a 30-min interval in the same session. The tests showed significant strong to very strong correlations with the 10-MWT, mTUG, and PBS. The within-session reliability was excellent, typically developing children were significantly faster than children with CP with high sensitivity and specificity, and the time differed significantly within the GMFCS level. Thus, the Obstacles and Curb tests can be considered valid, reliable, and sensitive walking tests for ambulatory children with CP.

The Use of Serious Gaming to Improve Sensorimotor Function and Motivation in People with Cerebral Palsy: A Systematic Review

The aim of this systematic review was to review the evidence for serious gaming interventions in improving sensorimotor function in children and adults with cerebral palsy (CP). Seven databases were searched with terms related to serious gaming and CP. Articles were evaluated according to the Downs and Black rating scale and important principles of serious gaming defined by Whyte et al. Extracted data included the population, intervention, serious gaming elements, outcomes, and authors' conclusions. Fifty-seven articles were identified for inclusion. Participants' ages ranged from 3 to 57 years. Interventions tested included commercial videogames as well as specially designed games. Most interventions had themed content, short-term goals, rewards, feedback, and multiple games. Outcome measures and study designs were inconsistent between studies. Sensorimotor function results of noncomparative studies were positive or neutral overall, but results of comparative studies were more mixed. We concluded that serious gaming interventions may be a useful adjunct to treatment as they are noninvasive, were not associated with deterioration in most cases, and may improve compliance. More comparative studies need to be completed to assess compliance and treatment outcomes. Future games should also aim to adhere more closely to the principles of serious gaming.

Normative reference values for Obstacles Test and Curb Test and their correlation with demographic characteristics: a cross-sectional study in Saudi children

The Obstacles Test and Curb Test have been used to measure gait speed and functional balance in adults. Recently, they have been modified for use in children but the normative values have not been established. This requires correlating the sex, age, height, weight, and BMI% of children with the test results and developing prediction equations. In this cross-sectional study, the Obstacles Test and Curb Test were administered to a convenience sample of 240 typically developing children aged 6-11 years. The factors associated with the time to complete each test were studied and prediction equations were established. The completion times were 5.27 ± 0.81 s for the Obstacles Test and 2.82 ± 0.45 s for the Curb Test. The Obstacles Test showed a fair negative relationship with height (Pearson's r  = -0.41, P  < 0.001), age ( r  = -0.35, P  < 0.001), and weight ( r  = -0.32, P  < 0.05). The Curb Test also had fair negative correlations with height ( r  = -0.42, P  < 0.001), age ( r  = -0.39, P  < 0.001), and weight ( r  = -0.31, P  < 0.001). Both tests showed poor correlations with the sex [eta ( η ) = 0.15 and 0.12, respectively]. Nonetheless, age and sex emerged as the main predictors of both test scores, accounting for 14% and 17% of the total variance in the Obstacles Test and Curb Test times, respectively. Normative values and prediction equations for both tests in typically developing children may be used for individual comparisons and in clinical research for the evaluation of interventions targeting disabled children.

Psychometric properties of functional postural control tests in children: A systematic review

BACKGROUND

Postural control deficits are one of the most common impairments treated in pediatric physiotherapeutic practice. Adequate evaluation of these deficits is imperative to identify postural control deficits, plan treatment and assess efficacy. Currently, there is no gold standard evaluation for postural control deficits. However, the number of studies investigating the psychometric properties of functional pediatric postural control tests has increased significantly.

OBJECTIVE

To facilitate the selection of an appropriate pediatric functional postural control test in research and clinical practice.

METHODS

Systematic review following the PRISMA guidelines. PubMed, Web of Science and Scopus were systematically searched (last update: June 2022; PROSPERO: CRD42021246995). Studies were selected using the PICOs-method (pediatric populations (P), functional assessment tools for postural control (I) and psychometric properties (O). The risk of bias was rated with the COSMIN checklist and the level of evidence was determined with GRADE. For each test, the postural control systems were mapped, and the psychometric properties were extracted.

RESULTS

Seventy studies investigating 26 different postural control tests were included. Most children were healthy or had cerebral palsy. Overall, the evidence for all measurement properties was low to very low. Most tests (95%) showed good reliability (ICC>0.70), but inconsistent validity results. Structural validity, internal consistency and responsiveness were only available for 3 tests. Only the Kids-BESTest and FAB covered all postural control systems.

CONCLUSION

Currently, 2 functional tests encompass the entire construct of postural control. Although reliability is overall good, validity results depend on task, age and pathology. Future research should focus on test batteries and should particularly explore structural validity and responsiveness in different populations with methodologically strong study designs.

Canan Outdoor Multisurface Terrain Enhance the Effects of Fall Prevention Exercise in Older Adults? A Randomized Controlled Trial

Walking on complex surface conditions in outdoor environments is important for active aging. This study aimed at examining whether fall prevention exercise integrated with an outdoor multisurface terrain compared with indoor solid ground was more beneficial for older adults. Twenty-two older nursing home residents were randomly assigned to outdoor multisurface terrain (n = 11, 79.5 ± 2.1 years) or indoor solid ground (n = 11, 78.8 ± 5.2 years) groups. Training occurred five times per week (30 min) for 3 weeks. The following performance test outcomes were measured: 10 m walk test (10 mWT), multisurface terrain walk test (MTWT), 2 min walk test (2 MWT), timed up and go test (TUGT), single-leg standing test with eyes open (SLSTEO), single-leg standing test with eyes closed (SLSTEC), and closed cycles test (CCT). Compared with baseline, the outdoor multisurface terrain training significantly improved performance in all tests (p < 0.01). The improvements of the outdoor multisurface terrain group after intervention were significantly higher than those of the indoor solid group in the 10 mWT (p = 0.049), MTWT (p = 0.02), and 2 MWT (p = 0.000). Exercise combined with outdoor multisurface terrain training may be an efficacious approach and a feasible environmental intervention for fall prevention in older adults.

Reliability and construct validity of the Walking Adaptability Ladder Test for Kids (WAL-K): a new clinical test for measuring walking adaptability in children

PURPOSE

Walking adaptability is essential for children to participate in daily life, but no objective measurement tools exist. We determined psychometric properties of the Walking Adaptability Ladder test for Kids (WAL-K) in 6-12 year old children.

MATERIALS AND METHODS

In total, 122 typically developing (TD) children and 26 children with Developmental Coordination Disorder (DCD) completed the single and double run conditions of the WAL-K. Intra-rater, inter-rater and test-retest reliability were determined by ICCs and Smallest Detectable Change (SDC) in 53 TD children. Construct validity was determined by comparing WAL-K scores between 69 TD and all DCD children and correlating these scores with age and MABC-2 scores.

RESULTS

ICCs for reliability varied between 0.76 and 0.99. Compared to the first test performance, WAL-K scores were lower (i.e., better) at retest. SDCs for test-retest reliability varied between 20.8 and 26.1% of the mean scores. WAL-K scores were significantly higher (i.e., worse) in DCD children compared to TD children (p < 0.001). Significant negative correlations were found with MABC-2 (-0.52 and -0.60) and age (-0.61 and -0.68).

CONCLUSIONS

The WAL-K shows to be a valid, reliable and easy-to-use tool for measuring walking adaptability in children. Adding an extra practice trial may reduce the observed learning effect.Implications for rehabilitationWalking adaptability is an essential skill for children to participate in daily life, but no objective measurement tools are available.The Walking Adaptability Ladder test for Kids (WAL-K) is a new measurement tool for evaluating walking adaptability in children.The WAL-K shows to be a reliable and valid measurement tool for evaluating walking adaptability in 6-12 year old children.

Reliability of a New Clinical Gait Assessment Scale for Children with Idiopathic Toe Walking Gait - A Pilot Study

AIMS

Children with idiopathic toe walking (ITW) gait are increasingly referred to physical therapists. The purpose of this study was to evaluate the intra-rater and inter-rater reliability of the Clinical Gait Assessment Scale (CGAS), a newly developed observational rating scale.

METHODS

Four raters evaluated videos of four children. Foot, arm and head/trunk movement was scored as children walked over four surfaces. Intra-class correlation coefficients (ICC), model (3,k) were calculated to determine intra-rater and inter-rater reliability of each dependent variable.

RESULTS

The key findings of this study indicate robust intra- and inter-rater reliability, particularly of the foot (Inter-rater reliability, ICC (3,2)=0.9) and head and trunk (Inter-rater reliability, ICC (3,2)=1.0) subsections. Arm movements were more challenging to rate and showed moderate reliability (Inter-rater reliability, ICC (3,2)=0.7). Highest total impairment score; the highest value occurred while walking on the obstacle course (38 ± 29).

CONCLUSIONS

Overall, the CGAS showed adequate/acceptable reliability across different surfaces (linoleum, textured surface, narrow base, obstacle), however the obstacle surface was most challenging surface to the rater.

An exploratory study of gait and functional outcomes after neuroprosthesis use in children with hemiplegic cerebral palsy

PURPOSE

To evaluate the immediate orthotic, total and therapeutic effects of functional electrical stimulation (FES) neuroprosthesis use on clinic based measures of gait and function in children with hemiplegic cerebral palsy.

METHODS

Eleven children (mean 9 years 11 months) participated in an FES neuroprosthesis (Ness L300) intervention (4 week accommodation period followed by 12 weeks of daily use) and were assessed at baseline and post in stimulation off and stimulation on conditions. Measures included clinic based outcomes of gait and function.

RESULTS

No significant immediate orthotic effects were observed. Significant (p < 0.01) total effects were noted for dorsiflexion at initial contact, Six-Minute Walk Test (6MWT), and walking speed. A significant therapeutic effect was found for steps off path on the Standardized Walking Obstacle Course (SWOC).

CONCLUSIONS

Results support previous findings of neuroprosthesis total effects on gait and provide some evidence for effects on function. Therapeutic effects remain unclear. Implications for Rehabilitation In this study, children with hemiplegic CP did not demonstrate immediate improvements in gait or function at their first clinic visit using the FES neuroprosthesis device suggesting one visit using the device is not sufficient to determine potential benefits. Over time with daily use of the FES neuroprosthesis, ankle dorsiflexion in swing and at initial contact, walking speed and endurance increased with the device worn. Overtime, no carryover effects in ankle dorsiflexion in swing and at initial contact were noted at the end of the intervention period with the device off. Clinicians should consider purchasing units to loan or rent to individuals to trial a device at home before determining long-term potential for benefit.

Reference data for performances on the standardized walking obstacle course in children developing typically

PURPOSE

To establish reference performance groups on the Standardized Walking Obstacle Course (SWOC) a pathway to screen ambulation for children developing typically.

METHODS

SWOC tests ambulation under three conditions: walk (W), walk with tray (WT) and walk wearing sunglasses (WG). One trial consisted of standing up, walking the course in one direction and sitting down. Children (n=355) completed two trials per condition. Trial measures included time to complete (seconds) and numbers of steps, stumbles, and steps off path.

RESULTS

Trial 1 and trial 2 for time and number of steps are significantly different (p=0.0005), but highly correlated (r=0.93 and r=0.96) therefore their average was used to establish reference data. Gender was not a significant factor. Age and height predict performances in all conditions, but measures between age groups were not always significantly different. Significant different measures by height groups could be established across all conditions, therefore reference data was established using three height groups.

CONCLUSION

Reference values will assist clinicians to compare a child's performance on the SWOC based on an individual height because this can vary within and between ages thus screening for possible ambulation limitations.

A Modified Version of the Timed Up and Go Test for Children Who Are Preschoolers

PURPOSE

This study investigated factors predicting the Timed Up and Go (TUG) test in children who are preschoolers, using a modified protocol of the TUG.

METHOD

This was a cross-sectional study of children 3 to 5 years old (n = 192). Regression analysis identified predictive factors for TUG performances. Differences in mean values (standard deviation) were calculated for each age group.

RESULTS

The results of 172 children were analyzed. Age and ethnicity were predictive of TUG performance (R = 0.280). Children who are preschoolers with Flemish ethnicity need less time to perform the TUG than their peers with another ethnicity (P < .05), but this difference is not significant for the age groups. The TUG performance differs significantly among all age groups (P < .05).

CONCLUSIONS

A modified protocol for the TUG, which is sensitive to age-related changes in dynamic balance control, is proposed for children who are preschoolers.

Psychometric properties of functional balance tests in children: a literature review

AIM

Identifying balance problems are the first step towards monitoring and rehabilitation. Therefore, this paper aims to make an overview of the psychometric properties of the functional balance tests available for children.

METHOD

A literature search was performed in PubMED and Web of Science on 8 February 2014 and updated on 6 July 2014. A conceptual framework for functional balance tests was defined, taking balance control components and task constraints into account. The tests were selected for inclusion by consensus of 2-3 reviewers using the conceptual framework.

RESULTS

Fourteen tests were investigated in 25 articles and analysed within the conceptual framework. The Timed Up and Go test, Pediatric Balance Scale, and Pediatric Reach Test are well investigated and all show good reliability. Validity remains unclear because of lack of a criterion standard to measure balance control.

INTERPRETATION

Because of the lack of good methodological studies, strong evidence for the use of one or more functional balance tests in children cannot be provided. Moreover, it is necessary that a criterion standard to measure balance is established.

Timed "Up & Go" test in children and adolescents

OBJECTIVE

To evaluate, by a literature review, the Timed "Up & Go" (TUG) test use and its main methodological aspects in children and adolescents.

DATA SOURCES

The searches were performed in the following databases: PubMed, CINAHL, Web of Science, SciELO and Cochrane Library, from April to July 2012. Studies published from 1990 to 2012 using the terms in Portuguese and English "Timed "Up & Go", "test", "balance", "child", and "adolescent" were selected. The results were divided into categories: general characteristics of the studies, population, test implementation METHODS, interpretation of results and associations with other measurements.

DATA SYNTHESIS

27 studies were analyzed in this review and most of them used the TUG test along with other outcome measures to assess functional mobility or balance. Three studies evaluated the TUG test in significant samples of children and adolescents with typical development, and the most studied specific diagnoses were cerebral palsy and traumatic brain injury. The absence of methodological standardization was noted, but one study proposed adaptations to the pediatric population. In children and adolescents with specific clinical diagnoses, the coefficient of within-session reliability was found to be high in most studies, as well as the intra and inter-examiner reliability, which characterizes the good reproducibility of the test.

CONCLUSIONS

The TUG test was shown to be a good tool to assess functional mobility in the pediatric population, presenting a good reproducibility and correlation with other assessment tools.

Effects of constraint-induced movement therapy on gait, balance, and functional locomotor mobility

PURPOSE

This study reports the secondary effects of a constraint-induced movement therapy (CIMT) protocol on spatial temporal parameters of gait, balance, and functional locomotor mobility in children with cerebral palsy.

METHODS

Sixteen children (4-12 years old) participated in a 3-week CIMT program. Participants were tested on the first and last day of the CIMT program using the Standardized Walking Obstacle Course (SWOC), the Pediatric Balance Scale (PBS) and the GAITRite Gold system (CIR Systems, Inc, Havertown, Pennsylvania).

RESULTS

Wilcoxon signed rank tests were used on all pre- and posttests. Only the spatial temporal parameters of cadence and velocity differed significantly, with 12 subjects displaying a faster cadence (P = .02) and 10 subjects displaying a faster velocity (P = .05).

CONCLUSION

In this pilot study, CIMT was found to promote changes in 2 spatial temporal parameters of gait. However, no changes were noted in the participant's measures on the SWOC and PBS.

Predictors of Standardized Walking Obstacle Course outcome measures in children with and without developmental disabilities

PURPOSE

This study was designed to determine which characteristics of children predict measures on the Standardized Walking Obstacle Course (SWOC).

METHODS

SWOC testing was performed under 3 conditions: (1) walk, (2) walk with a tray, and (3) walk wearing shaded glasses. Trials consisted of standing up, walking the course in 1 direction, and sitting down. Children (n = 440) completed 2 trials per condition. Trial measures included time, and numbers of steps, stumbles, and steps off the path. Relationships were evaluated using Chi-square analyses and significant predictors were determined by multiple logistic regression analyses. Sensitivity and specificity were calculated to determine the accuracy of disability as a predictor.

RESULTS

Age, weight, and disability were the strongest predictors (P < .05). Increased age and weight predicted shorter time and fewest steps. Disability predicts longer time and most steps.

CONCLUSION

The SWOC is appropriate to screen children for disabilities in functional ambulation.