Interrater Reliability of Activity Questionnaires After an Intensive Motor-Skill Learning Intervention for Children With Cerebral Palsy

Motor Skill Training May Restore Impaired Corticospinal Tract Fibers in Children With Cerebral Palsy

Background. In children with unilateral cerebral palsy (UCP), the fibers of the corticospinal tract (CST) emerging from the lesioned hemisphere are damaged following the initial brain injury. The extent to which the integrity of these fibers is restorable with training is unknown. Objective. To assess changes in CST integrity in children with UCP following Hand-and-Arm-Bimanual-Intensive-Therapy-Including-Lower-Extremity (HABIT-ILE) compared to a control group. Methods. Forty-four children with UCP participated in this study. Integrity of the CSTs was measured using diffusion tensor imaging before and after 2 weeks of HABIT-ILE (treatment group, n = 23) or 2 weeks apart without intensive treatment (control group, n = 18). Fractional anisotropy (FA) and mean diffusivity (MD) were the endpoints for assessing the integrity of CST. Results. As highlighted in our whole tract analysis, the FA of the CST originating from the nonlesioned and lesioned hemispheres increased significantly after therapy in the treatment group compared to the control group (group * test session interaction: P < .001 and P = .049, respectively). A decrease in MD was also observed in the CST emerging from the nonlesioned and lesioned hemispheres (group * time interaction: both P < .001). In addition, changes in manual ability correlated with changes in FA in both CSTs (r = 0.463, P = .024; r = 0.643, P < .001) and changes in MD in CST emerging from nonlesioned hemisphere (r = -0.662, P < .001). Conclusions. HABIT-ILE improves FA/MD in the CST and hand function of children with UCP, suggesting that CST fibers retain a capacity for functional restoration. This finding supports the application of intensive motor skill training in clinical practice for the benefit of numerous patients.

Effects of speech cues in French-speaking children with dysarthria

BACKGROUND

Articulatory excursion and vocal intensity are reduced in many children with dysarthria due to cerebral palsy (CP), contributing to the children's intelligibility deficits and negatively affecting their social participation. However, the effects of speech-treatment strategies for improving intelligibility in this population are understudied, especially for children who speak languages other than English. In a cueing study on English-speaking children with dysarthria, acoustic variables and intelligibility improved when the children were provided with cues aimed to increase articulatory excursion and vocal intensity. While French is among the top 20 most spoken languages in the world, dysarthria and its management in French-speaking children are virtually unexplored areas of research. Information gleaned from such research is critical for providing an evidence base on which to provide treatment.

AIMS

To examine acoustic and perceptual changes in the speech of French-speaking children with dysarthria, who are provided with speech cues targeting greater articulatory excursion (French translation of 'speak with your big mouth') and vocal intensity (French translation of 'speak with your strong voice'). This study investigated whether, in response to the cues, the children would make acoustic changes and listeners would perceive the children's speech as more intelligible.

METHODS & PROCEDURES

Eleven children with dysarthria due to CP (six girls, five boys; ages 4;11-17;0 years; eight with spastic CP, three with dyskinetic CP) repeated pre-recorded speech stimuli across three speaking conditions (habitual, 'big mouth' and 'strong voice'). Stimuli were sentences and contrastive words in phrases. Acoustic analyses were conducted. A total of 66 Belgian-French listeners transcribed the children's utterances orthographically and rated their ease of understanding on a visual analogue scale at sentence and word levels.

OUTCOMES & RESULTS

Acoustic analyses revealed significantly longer duration in response to the big mouth cue at sentence level and in response to both the big mouth and strong voice cues at word level. Significantly higher vocal sound-pressure levels were found following both cues at sentence and word levels. Both cues elicited significantly higher first-formant vowel frequencies and listeners' greater ease-of-understanding ratings at word level. Increases in the percentage of words transcribed correctly and in sentence ease-of-understanding ratings, however, did not reach statistical significance. Considerable variability between children was observed.

CONCLUSIONS & IMPLICATIONS

Speech cues targeting greater articulatory excursion and vocal intensity yield significant acoustic changes in French-speaking children with dysarthria. However, the changes may only aid listeners' ease of understanding at word level. The significant findings and great inter-speaker variability are generally consistent with studies on English-speaking children with dysarthria, although changes appear more constrained in these French-speaking children. What this paper adds What is already known on the subject According to the only study comparing effects of speech-cueing strategies on English-speaking children with dysarthria, intelligibility increases when the children are provided with cues aimed to increase articulatory excursion and vocal intensity. Little is known about speech characteristics in French-speaking children with dysarthria and no published research has explored effects of cueing strategies in this population. What this paper adds to existing knowledge This paper is the first study to examine the effects of speech cues on the acoustics and intelligibility of French-speaking children with CP. It provides evidence that the children can make use of cues to modify their speech, although the changes may only aid listeners' ease of understanding at word level. What are the potential or actual clinical implications of this work? For clinicians, the findings suggest that speech cues emphasizing increasing articulatory excursion and vocal intensity show promise for improving the ease of understanding of words produced by francophone children with dysarthria, although improvements may be modest. The variability in the responses also suggests that this population may benefit from a combination of such cues to produce words that are easier to understand.

The effects of modified constraint-induced movement therapy combined with intensive bimanual training in children with brachial plexus birth injury: a retrospective data base study

BACKGROUND

In children with Brachial Plexus Birth Injury, a non-use of the affected upper limb despite sufficient capacity, is sometimes observed, called developmental disregard. The combination of modified constraint-induced-movement-therapy with bimanual training is frequently applied to overcome developmental disregard in unilateral Cerebral Palsy. In the current study the effects of the combination of modified constraint-induced-movement-therapy with bimanual training are investigated in children with Brachial Plexus Birth Injury in comparison to children with unilateral Cerebral Palsy. We hypothesize that the combination of modified constraint-induced-movement-therapy with bimanual training is effective in Brachial Plexus Birth Injury.

METHODS

Data of 19 children with Brachial Plexus Birth Injury (M_age: 4.1 years) and 18 with unilateral Cerebral Palsy (M_age: 4.5 years) were compared. The effects of modified constraint-induced-movement-therapy with bimanual training (54 h modified constraint-induced-movement-therapy, 18 h bimanual training, 8-10 weeks) was investigated by assessing spontaneous affected-upper-limb-use ("Assisting Hand Assessment"), manual abilities ("ABILHAND-kids") and subjective performance and satisfaction of problematic bimanual activities ("Canadian Occupational Performance Measure") at three time points (pre-treatment, post-treatment, follow-up). This data was analyzed using repeated-measures analysis.

RESULTS

Children with Brachial Plexus Birth Injury showed significant improvements on all outcome measures following modified constraint-induced-movement-therapy with bimanual training. These results were comparable to those observed in the group of children with unilateral Cerebral Palsy.

DISCUSSION

These results suggest that modified constraint-induced-movement-therapy with bimanual training is effective in Brachial Plexus Birth Injury. They indicate a comparable improved bimanual performance in children with Brachial Plexus Birth Injury than in unilateral Cerebral Palsy and suggests that both groups of children have affectively overcome their developmental disregard.IMPLICATIONS FOR REHABILITATIONChildren with Brachial Plexus Birth Injury frequently experience difficulties in activities of daily living.It has recently been suggested that children with Brachial Plexus Birth Injury may also show a non-use of the affected upper limb despite sufficient capacity, called developmental disregard.Children with Brachial Plexus Birth Injury and developmental disregard might therefore benefit from intensive therapies aimed at overcoming developmental disregard, originally developed for children with unilateral Cerebral Palsy.A combination of modified Constrained-Induced Movement Therapy with intensive Bimanual Training has shown to be affective in children with unilateral Cerebral Palsy.In a small sample, this study shows that a combination of modified Constrained-Induced Movement Therapy with intensive bimanual training is effective in children with Brachial Plexus Birth Injury, comparable and even more than in unilateral Cerebral Palsy.