ORCID Profile
0000-0001-6694-6358
Current Organisation
HES-SO Valais-Wallis Haute Ecole de Gestion
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Publisher: Elsevier BV
Date: 05-2023
Publisher: Cold Spring Harbor Laboratory
Date: 03-02-2020
DOI: 10.1101/2020.01.31.20019893
Abstract: Mirror movements (MM) influence bimanual performance in children with unilateral cerebral palsy (uCP). Whilst MM are related to brain lesion characteristics and the corticospinal tract (CST) wiring pattern, the combined impact of these neurological factors remains unknown. To investigate the combined impact of neurological factors on MM. Forty-nine children with uCP (mean age 10y6mo) performed a repetitive squeezing task to quantify similarity between MM activity (MM-similarity) and strength of the MM activity (MM-intensity). We used MRI to evaluate lesion type (periventricular white matter, N=30) cortico-subcortical, N=19), the extent of ipsilesional damage and damage to basal ganglia, thalamus and corpus callosum. The CST wiring pattern (17 CSTcontralateral, 16 CSTipsilateral, 16 CSTbilateral) was assessed with Transcranial Magnetic Stimulation. Data was analyzed with simple and multiple regression analyses. MM-similarity in the more-affected hand was higher with more damage to the corpus callosum. MM-intensity was higher in children with CSTcontralateral with damage to the basal ganglia and thalamus. In the less-affected hand, MM-similarity was explained by the interaction between lesion type and CST wiring pattern, with higher MM-similarity in children with cortico-subcortical lesions in the CSTcontralateral group. MM-intensity was higher with larger damage to the corpus callosum and unilateral lesions. A complex combination of neurological factors influences MM characteristics and the mechanisms differ between hands.
Publisher: Elsevier BV
Date: 08-2018
DOI: 10.1016/J.APMR.2018.01.035
Abstract: To introduce the Windmill-task, a new objective assessment tool to quantify the presence of mirror movements (MMs) in children with unilateral cerebral palsy (UCP), which are typically assessed with the observation-based Woods and Teuber scale (W&T). Prospective, observational, cohort pilot study. Children's hospital. Prospective cohort of children (N=23) with UCP (age range, 6-15y, mean age, 10.5±2.7y). Not applicable. The concurrent validity of the Windmill-task is assessed, and the sensitivity and specificity for MM detection are compared between both assessments. To assess the concurrent validity, Windmill-task data are compared with W&T data using Spearman rank correlations (ρ) for 2 conditions: affected hand moving vs less affected hand moving. Sensitivity and specificity are compared by measuring the mean percentage of children being assessed inconsistently across both assessments. Outcomes of both assessments correlated significantly (affected hand moving: ρ=.520 P=.005 less affected hand moving: ρ=.488 P=.009). However, many children displayed MMs on the Windmill-task, but not on the W&T (sensitivity: affected hand moving: 27.5% less affected hand moving: 40.6%). Only 2 children displayed MMs on the W&T, but not on the Windmill-task (specificity: affected hand moving: 2.9% less affected hand moving: 1.4%). The Windmill-task seems to be a valid tool to assess MMs in children with UCP and has an additional advantage of sensitivity to detect MMs.
Publisher: Cold Spring Harbor Laboratory
Date: 26-03-2021
DOI: 10.1101/2021.03.22.21253256
Abstract: Childhood arterial ischemic stroke (AIS) is associated with significant morbidity with up to 50% of affected children developing hemiparesis. Hemiparesis is assumed to influence participation within the peer group, but it is unclear to what extent its severity affects participation in different areas of social life. Thirteen children (mean age 9y6m) with AIS (6 without hemiparesis, 7 with hemiparesis) and 21 controls (mean age 9y8m) participated. We scored hemiparesis severity with hand strength asymmetry (pinch and grip strength), measured with a dynamometer. We assessed manual ability (ABILHAND-Kids), socioeconomic status (Family Affluence Scale) and participation (Participation and Environment Measure – Children and Youth). From structural MRI, we measured lesion size. We investigated differences in participation and its relationship with hemiparesis severity using non-parametric partial correlations (controlling for lesion size, manual ability, and socioeconomic status), interpreted as absent (r .25), weak (r=0.25-0.50), moderate (r=0.50-0.75) or strong (r .75). Analyses were performed in jamovi 1.6.3. Children with AIS (with or without hemiparesis) showed reduced participation frequency at school (p .001), whilst participation at home and in the community resembled that of their peers. Severity of hemiparesis was moderately related to frequency and involvement at home and to involvement and desire for change in the community, although unrelated to school participation. Reduced participation in school life requires close attention in the follow-up of children with AIS - regardless of the severity of hemiparesis. Participation at home and in the community is related to hemiparesis severity and may be improved with participation-focused motor intervention strategies. Children with stroke participate less frequently at school but are equally involved. Decreased participation at school is not related to hemiparesis severity. Participation at home and in the community are related to hemiparesis severity.
Publisher: Wiley
Date: 19-01-2021
DOI: 10.1111/DMCN.14806
Abstract: To investigate the inter‐ and intrarater reliability of the Woods and Teuber scale to detect mirror movements in children and adolescents with unilateral cerebral palsy (CP). A convenience s le of children and adolescents with unilateral CP ( n =68 31 males, 37 females mean age 12y 2mo, SD 3y 6mo) in Manual Ability Classification levels I to III was recruited from Norway, Australia, and Belgium. Three therapists scored mirror movements according to the Woods and Teuber scale from three video‐recorded tasks at two separate time points. A two‐way, mixed model regression was used to calculate intraclass correlation coefficients (ICCs) reflecting overall inter‐ and intrarater reliability. In addition, ICCs for each hand and task were calculated separately. The overall interrater reliability ICC was 0.90 and the corresponding intrarater reliability ICC was 0.92. The ICCs for each hand ranged from 0.86 to 0.92 and for each task from 0.63 to 0.89. The Woods and Teuber scale shows excellent reliability for scoring mirror movements in children and adolescents with unilateral CP. The assessment is easy to administer with no need for specific equipment and scoring can be determined from short video recordings, making it a feasible instrument in research and clinical practice.
Publisher: Elsevier BV
Date: 11-2021
DOI: 10.1016/J.EJPN.2021.09.010
Abstract: Childhood arterial ischemic stroke (AIS) is associated with significant morbidity with up to 50% of affected children developing hemiparesis. Hemiparesis is assumed to influence participation within the peer group, but it is unclear to what extent its severity affects participation in different areas of social life. Thirteen children (mean age 9y6m) with AIS (6 without hemiparesis, 7 with hemiparesis) and 21 controls (mean age 9y8m) participated. We scored hemiparesis severity with hand strength asymmetry (pinch and grip strength), measured with a dynamometer. We assessed manual ability (ABILHAND-Kids), socioeconomic status (Family Affluence Scale) and participation (Participation and Environment Measure - Children and Youth). From structural MRI, we measured lesion size. We investigated differences in participation and its relationship with hemiparesis severity using non-parametric partial correlations (controlling for lesion size, manual ability, and socioeconomic status), interpreted as absent (r 0.75). Analyses were performed in jamovi 1.6.3. Children with AIS (with or without hemiparesis) showed reduced participation frequency at school (p < 0.001), whilst participation at home and in the community resembled that of their peers. Severity of hemiparesis was moderately related to frequency and involvement at home and to involvement and desire for change in the community, although unrelated to school participation. Reduced participation in school life requires close attention in the follow-up of children with AIS - regardless of the severity of hemiparesis. Participation at home and in the community is related to hemiparesis severity and may be improved with participation-focused motor intervention strategies.
No related grants have been discovered for Cristina Simon-Martinez.