Preliminary Use of the Physical and Neurological Examination of Subtle Signs for Detecting Subtle Motor Signs in Adolescents With Sport-Related Concussion

Equivalence of in-person and videoconference administration of the Physical and Neurological Examination of Subtle Signs (PANESS) timed motor section

Demand for telehealth services has increased in many settings as a means of reducing patient burden and increasing access to care. It is therefore critical to understand if clinical tools validated for in-person use are feasible to administer via telehealth and, if so, how results may vary from those obtained in-person. The Revised Physical and Neurological Examination of Subtle Signs (PANESS) is a validated assessment of pediatric neuromotor functioning that is sensitive to detecting motor dysfunction in youth. The Timed Motor section of the PANESS is an ideal candidate for telehealth administration given its strong inter-rater reliability when scored via video review. Here, we preliminarily examined the feasibility of administering the Timed Motor section of PANESS via videoconferencing and its equivalence with in-person administration. We administered the Timed Motor section of the PANESS in-person and via videoconferencing in 25 typically developing youth ages 10-18 (including n = 11 who had clinically recovered from concussion). All were able to complete the assessment via videoconference. We observed moderate to excellent reliability of scores obtained in-person and via videoconference (intraclass correlations ranging from .743 to .971). Results suggest that the Timed Motor Section of the PANESS can be administered remotely in typically developing youth (including those with a history of concussion) and that the scores obtained are stable with in-person scores. Future work is needed to examine the feasibility and equivalence of telehealth-based PANESS administration in clinical settings and patient populations.

Patterns of Change in Functional Connectivity and Motor Performance Are Different in Youth Recently Recovered from Concussion

Adolescents who have sustained a concussion or mild traumatic brain injury (mTBI) are prone to repeat injuries which may be related to subtle motor deficits persisting after clinical recovery. Cross-sectional research has found that these deficits are associated with altered functional connectivity among somatomotor, dorsal attention, and default mode networks. However, our understanding of how these brain-behavior relationships change over time after clinical recovery is limited. In this study, we examined categorical and dimensional trajectories of functional connectivity and subtle motor performance in youth clinically recovered from mTBI and never-injured controls (10-17 years). All participants completed task-based and resting-state functional magnetic resonance imaging scans and the Physical and Neurological Examination of Subtle Signs (PANESS) at initial and 3-month follow-up visits. We examined somatomotor-dorsal attention and somatomotor-default mode network connectivity and their association with PANESS performance. Compared with controls, a larger proportion of youth recovered from mTBI showed increases in somatomotor-dorsal attention functional connectivity over time; in contrast, there were no differences in somatomotor-default mode connectivity trajectories between youth recovered from mTBI and controls. Relative to controls, youth recovered from mTBI who showed greater increases in somatomotor-dorsal attention connectivity over time also completed motor tasks more slowly at the 3-month compared with the initial visit. Collectively, these findings suggest that longitudinal changes in somatomotor-dorsal attention functional connectivity may be associated with lingering motor learning deficits after clinical recovery from pediatric mTBI. Further research is necessary to understand how trajectories of functional connectivity and motor performance can inform individual-level outcomes, for instance, susceptibility to future injuries in both youth who are never injured and those clinically recovered from mTBI.

Neurodevelopmental benefits of judo training in preschool children: a multinational, mixed methods follow-up study

Introduction

In our quasi-experimental study, we evaluated the neurodevelopmental impact of judo on young children (n = 182) aged 4-7 years, specifically focusing on primitive reflex integration. Participants were divided into judo and non-judo control groups, and assessments were conducted over 6 months across Hungary, Slovakia, and Austria.

Methods

Neurodevelopmental changes were measured using Institute for Neuro-Physiological Psychology (INPP) and Physical and Neurological Examination for Soft Signs (PANESS) for children, while parents completed the Performance Skills Questionnaire (PSQ).

Results

Analysis with Repeated Measures ANOVA (significance set at p < 0.05) revealed significant improvements in cognitive and motor performance in judo-practicing children compared to their non-judo counterparts. Furthermore, Spearman correlation analysis revealed that INPP and PANESS were effective in identifying neurodevelopmental changes, PSQ was not suitable as a simplified screening tool for parents, potentially due to its absence of items focused on primitive reflexes.

Conclusion

Despite the limitations of the study, our findings suggest that judo practice could foster central nervous system (CNS) maturation in young children, promoting the potential inclusion of judo in early childhood education programs.

Inter-rater Reliability of the Revised Physical and Neurological Examination of Subtle Signs (PANESS) scored using video review

The Physical and Neurological Examination of Subtle Signs (PANESS) is a brief neuromotor exam designed for use in children. This study examined the inter-rater reliability of PANESS scoring using video review in 23 typically developing youth, aged 10-18 years, who were either never-concussed or evaluated following clinical recovery from concussion. Moderate to excellent inter-rater reliability was identified across PANESS subscores and total score. The strongest inter-rater reliability was observed for the Timed Motor portion of the PANESS (ICCs >.90) suggesting that this section in particular may be a strong candidate for video-based scoring or telehealth administration.

Rethinking recovery in adolescent concussions: Network-level functional connectivity alterations associated with motor deficits

Adolescents who are clinically recovered from concussion continue to show subtle motor impairment on neurophysiological and behavioral measures. However, there is limited information on brain-behavior relationships of persistent motor impairment following clinical recovery from concussion. We examined the relationship between subtle motor performance and functional connectivity of the brain in adolescents with a history of concussion, status post-symptom resolution, and subjective return to baseline. Participants included 27 adolescents who were clinically recovered from concussion and 29 never-concussed, typically developing controls (10-17 years); all participants were examined using the Physical and Neurologic Examination of Subtle Signs (PANESS). Functional connectivity between the default mode network (DMN) or dorsal attention network (DAN) and regions of interest within the motor network was assessed using resting-state functional magnetic resonance imaging (rsfMRI). Compared to controls, adolescents clinically recovered from concussion showed greater subtle motor deficits as evaluated by the PANESS and increased connectivity between the DMN and left lateral premotor cortex. DMN to left lateral premotor cortex connectivity was significantly correlated with the total PANESS score, with more atypical connectivity associated with more motor abnormalities. This suggests that altered functional connectivity of the brain may underlie subtle motor deficits in adolescents who have clinically recovered from concussion. More investigation is required to understand the persistence and longer-term clinical relevance of altered functional connectivity and associated subtle motor deficits to inform whether functional connectivity may serve as an important biomarker related to longer-term outcomes after clinical recovery from concussion.

Altered white matter diffusivity and subtle motor function in a pilot cohort of adolescents with sports-related concussion

Background and objective:

Adolescents with sports-related concussion (SRC) demonstrate acute and persistent deficits in subtle motor function. However, there is limited research examining related neurological underpinnings. This pilot study examined changes in motor-associated white matter pathways using diffusion tensor imaging (DTI) and their relationship with subtle motor function.

Methods:

Twelve adolescents with SRC (12–17 years) within two-weeks post-injury and 13 never-injured neurotypical peers completed DTI scanning. A subset of 6 adolescents with SRC returned for a follow-up visit post-medical clearance from concussion. Subtle motor function was evaluated using the Physical and Neurological Examination of Subtle Signs (PANESS).

Results:

Adolescents with SRC showed higher mean diffusivity (MD) of the superior corona radiata and greater subtle motor deficits compared to controls. Across all participants, greater subtle motor deficits were associated with higher (more atypical) MD of the superior corona radiata. Preliminary longitudinal analysis indicated reduction in fractional anisotropy of the corpus callosum but no change in the MD of the superior corona radiata from the initial visit to the follow-up visit post-medical clearance.

Conclusions:

These findings support preliminary evidence for a brain–behavior relationship between superior corona radiata microstructure and subtle motor deficits in adolescents with SRC that merits further investigation.

Thirty-Second Single-Leg Stance Identifies Impaired Postural Control in Children After Concussion: A Preliminary Report

CONTEXT

Objective and expedient assessments of standing postural control incorporating static and dynamic tasks are necessary for identifying subtle motor deficits and clearing children to return to high-risk activities after concussion. The Revised Physical and Neurological Examination for Subtle Signs (PANESS) gaits and stations tasks evaluate both static and dynamic aspects of postural control. While the PANESS gaits and stations subscale is sensitive to concussion in youth, the benefit of each specific task for this purpose is unknown.

PURPOSE

This study evaluated whether specific PANESS tasks identify postural impairments after youth concussion.

DESIGN

Cross-sectional study.

SETTING

Academicallyaffiliated research laboratory.

PARTICIPANTS

Sixty youth, ages 10-17 years, comprised 3 groups: (1) youth symptomatic from concussion (4-14 d postinjury [n = 18]), (2) clinically-recovered youth (27-122 d postinjury [n = 15]), and (3) age- and gender-matched never-concussed controls (n = 27).

MAIN OUTCOME MEASURE

PANESS gaits and stations tasks (6 dynamic and 3 static) at the time of the initial research visit.

RESULTS

Kruskal-Wallis statistic identified a significant main effect of group on standing on one foot (a 30-s task). Both symptomatic and clinically-recovered youth showed deficits on standing on one foot relative to controls.

CONCLUSIONS

Single-leg tasks of longer duration may maximize the ability to detect residual postural deficits after concussion and can be readily incorporated in targeted sport rehabilitation protocols.

Construct Validity and Reliability of the Revised Physical and Neurological Examination of Subtle Signs (PANESS) Gaits and Stations Measures

Purpose: To facilitate precise diagnosis and provide tailored treatment of postural anomalies in the pediatric population, appropriate assessments are essential. In light of the multicomponent structure of postural control, understanding underlying constructs of an assessment is valuable in selecting and interpreting assessments. This study investigates the construct validity of the Gaits and Stations variables in the Revised Physical and Neurological Examination of Subtle Signs, a measure used to evaluate standing postural control in youth with mild neurological deficits. Methods: Data were included from 350 healthy participants ages 10–19 years old. An exploratory factor analysis with varimax rotation was performed. Individual loadings of ≥0.4 were used for factor designation. Results: Three latent factors were identified and labeled, based on evidence, as dynamic stability, movement strategies/coordination, and underlying motor systems—musculoskeletal strength. Conclusions: These brief, easily administered Gaits and Stations measures of the Physical and Neurological Examination of Subtle Signs facilitate evaluation of three constructs of standing postural control relevant to youth with mild neuromotor impairments. This information will potentially assist in clinical practice to identify youth with postural control deficits and establish developmentally appropriate interventions and in research to refine understanding of pathology and the impact on components of postural control.

The Effect of Age and Competition Level on Subtle Motor Performance in Adolescents Medically Cleared Postconcussion: Preliminary Findings

OBJECTIVE

The aim of this study was to examine the effect of age and level of competition on subtle motor performance in adolescents who have recently been medically cleared postconcussion and never-injured controls.

DESIGN

Thirty adolescents who were recently medically cleared postconcussion (12-18 yrs) and 30 never-concussed, typically developing controls were examined using the Revised Physical and Neurological Examination of Subtle Signs (PANESS) and the Immediate Post-Concussion Assessment and Cognitive Testing.

RESULTS

Older age was associated with better Immediate Post-Concussion Assessment and Cognitive Testing scores in both groups, whereas only the control group showed improved motor performance on the PANESS with increasing age. Adolescents across both groups participating at a higher level of competition (school or travel level) had better motor performance on the PANESS than those participating at a lower level of competition (recreational level or no sports participation). Adolescents medically cleared postconcussion had greater motor deficits on the PANESS than controls did.

CONCLUSION

After medical clearance, adolescents with a history of recent concussion demonstrate alterations in the relationship between motor function and age. The PANESS merits further exploration as a measure that is sensitive to factors affecting motor performance, such as age and level of athletic competition, as well as to persistent subtle motor deficits in adolescents medically cleared postconcussion.

Developmental trajectory of subtle motor signs in attention-deficit/hyperactivity disorder: A longitudinal study from childhood to adolescence

This study examined the developmental trajectory of neurodevelopmental motor signs among boys and girls with attention-deficit/hyperactivity disorder (ADHD) and typically-developing (TD) children. Seventy children with ADHD and 48 TD children, aged 8-17 years, were evaluated on at least two time-points using the Physical and Neurological Assessment of Subtle Signs (PANESS). Age-related changes in subtle motor signs (overflow, dysrhythmia, speed) were modeled using linear mixed-effects models to compare the developmental trajectories among four subgroups (ADHD girls and boys and TD girls and boys). Across visits, both boys and girls with ADHD showed greater overflow, dysrhythmia, and slower speed on repetitive motor tasks compared to TD peers; whereas, only girls with ADHD were slower on sequential motor tasks than TD girls. Developmental trajectory analyses revealed a greater reduction in overflow with age among boys with ADHD than TD boys; whereas, trajectories did not differ among girls with and without ADHD, or among boys and girls with ADHD. For dysrhythmia and speed, there were no trajectory differences between the subgroups, with all groups showing similar reductions with age. Children with ADHD show developmental trajectories of subtle motor signs that are consistent with those of TD children, with one clear exception: Boys with ADHD show more significant reductions in overflow from childhood to adolescence than do their TD peers. Our findings affirm the presence of subtle motor signs in children with ADHD and suggest that some of these signs, particularly motor overflow in boys, resolve through adolescence while dysrhythmia and slow speed, may persist.

Subtle Motor Signs and Executive Functioning in Chronic Paediatric Traumatic Brain Injury: Brief Report

Background: Children with traumatic brain injury (TBI) are reported to have persistent deficits in executive functioning and subtle motor functionsAim: This study examined the relationship between subtle motor signs and executive functioning in children with TBIMethods: Eighteen children aged 13-18 years with mild to severe TBI at least one year before study participation and 16 age-matched typically-developing controls were examined using the Revised Physical and Neurological Examination of Subtle Signs (PANESS), a simplified Go/No-go task, portions of the Delis-Kaplan Executive Function System Verbal Fluency and Trail Making tests, and a Wechsler Coding testResults: There were significant associations between PANESS scores and executive functioning measures in children with TBI but not in controls. Conclusion: Results suggest that assessment of subtle motor signs may provide broader information regarding functioning after pediatric TBI.

Subtle Motor Signs in Children With Chronic Traumatic Brain Injury

OBJECTIVE

The aim of the study was to characterize subtle motor signs in children with moderate-severe traumatic brain injury in the chronic phase of injury.

DESIGN

Fourteen children with moderate (n = 6) or severe (n = 8) traumatic brain injury, ages 11-18 yrs, who had sustained their injury at least 1-yr before study participation (range 1-14 yrs since injury), and 14 matched typically developing controls were examined using the Physical and Neurological Examination of Subtle Signs (PANESS). To examine the neural correlates of subtle motor signs, measures of total cerebral volume and motor/premotor volume were derived from magnetic resonance imaging.

RESULTS

Children with traumatic brain injury had significantly poorer PANESS performance than controls on the total timed subscore, proximal overflow, and the PANESS total score. Participants with severe traumatic brain injury had greater proximal overflow than those with moderate injury, after controlling for age at injury. Across all participants, greater proximal overflow correlated with reduced total cerebral volume, whereas within the traumatic brain injury group, reduced motor/premotor volume correlated with lower PANESS total score.

CONCLUSIONS

The study highlights the importance of examining subtle motor signs including overflow during clinical evaluation of chronic pediatric traumatic brain injury and establishes the clinical utility of the PANESS as a measure sensitive to chronic subtle motor signs in this population.

TO CLAIM CME CREDITS

Complete the self-assessment activity and evaluation online at http://www.physiatry.org/JournalCME CME OBJECTIVES: Upon completion of this article, the reader should be able to: (1) Define subtle motor signs including motor overflow; (2) Identify subtle motor signs such as motor overflow during clinical evaluation of children with brain injury; and (3) Explain the relevance of examining subtle motor signs in chronic pediatric brain injury during clinical evaluations.

LEVEL

Advanced.

ACCREDITATION

The Association of Academic Physiatrists is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.The Association of Academic Physiatrists designates this Journal-based CME activity for a maximum of 1.0 AMA PRA Category 1 Credit(s)™. Physicians should only claim credit commensurate with the extent of their participation in the activity.

Evaluating Motor Control Improves Discrimination of Adolescents with and without Sports Related Concussion

Disrupted motor performance is increasingly recognized as a critical sequela of concussion which may have relevance for diagnosis and treatment. In 17 adolescents with recent concussion and 20 never-concussed controls, we evaluated the discriminant ability of a commonly used neurocognitive measure compared to a motor subtle sign exam, which evaluates gait, balance, and fine and gross motor control. We found that the motor subtle sign exam had better discriminant ability than the neurocognitive measure, but combining both measures was superior to analyses with individual measures (Wilks' ƛ = .297, p < .001). This supports that there is an added benefit of evaluating motor control along with neurocognitive capacities after suspected concussion to enhance diagnosis and treatment of injury.