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Head-erect behavior among three preschool-aged children with cerebral palsy
Insights
Vibratory stimulation improved head-erect behavior in children with severe multiple handicaps. This intervention increased head lifts and duration, showing promise for similar conditions.
Area of Science:
- Rehabilitation Medicine
- Pediatric Physical Therapy
- Neuromuscular Rehabilitation
Background:
- Children with severe multiple handicaps often exhibit impaired postural control.
- Head-erect behavior is crucial for development and interaction.
- Limited research exists on non-invasive methods to improve head control in this population.
Purpose of the Study:
- To evaluate the efficacy of vibratory stimulation on head-erect behavior in young children with severe multiple handicaps.
- To assess the impact of vibration on electromyographic (EMG) activity during head-erect tasks.
Main Methods:
- A multiple baseline design across three subjects with severe multiple handicaps (mean age 2 years 4 months) was employed.
- Head lifts and head-erect duration were measured during prone positioning over a wedge.
- Vibratory stimulation was applied to paraspinal muscles of the neck and upper back.
Main Results:
- All three subjects demonstrated a significant increase in the cumulative duration of head-erect behavior during vibratory stimulation.
- Electromyographic (EMG) activity in relevant muscles increased concurrently with vibration.
- The effectiveness of vibratory stimulation was consistent across subjects with diverse conditions, including seizures and muscle tone disorders.
Conclusions:
- Vibratory stimulation is an effective intervention for enhancing head-erect behavior in children with severe multiple handicaps.
- The findings suggest that muscle vibration can positively influence postural control regardless of specific co-occurring conditions.
- Further research is warranted to explore long-term effects and optimize application protocols for this population.
Abstract:
This article presents the results of a multiple baseline design, across subjects, to assess the effect of vibratory stimulation on head-erect behavior in subjects who were prone. The subjects were three children with severe multiple handicaps whose mean age was 2 years 4 months and whose conditions included seizures and muscle tone disorders. Frequency of head lifts and cumulative duration of head-erect behavior were recorded during three-minute sessions with the subjects positioned prone on their forearms over a wedge. After baseline observations were recorded, vibration was applied to the paraspinal muscles of the neck and upper back for the first two minutes of each intervention session. In addition, electromyographic activity was recorded for a three-minute session at least once during both the baseline and intervention conditions. Results of the study demonstrated an increase in the cumulative duration of head-erect behavior for the three subjects and an accompanying increase in EMG activity during muscle vibration. The diversity of handicapping conditions (ie, seizures, hypertonia, and hypotonia) appeared to have no effect on the benefits received from muscle vibration for these subjects. Limitations of the study and implications for future research are discussed.