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Published on: November 11, 2022
Developmentally delayed children with different muscle tone have different muscle activity and acceleration during
1Institute for Basic Sciences Research, Kyungnam University, Changwon, Korea.
Insights
Muscle activity and acceleration during sit-to-stand differ in children with developmental delays (DD) based on muscle tone. Findings reveal distinct patterns in hypertonic and hypotonic DD children, informing targeted interventions.
Area of Science:
- Movement science
- Developmental pediatrics
- Rehabilitation medicine
Background:
- Developmental delays (DD) present with varied motor characteristics influenced by muscle tone.
- Understanding these differences is crucial for effective therapeutic strategies.
Purpose of the Study:
- To investigate muscle activity and acceleration during the sit-to-stand task in developmentally delayed (DD) children with varying muscle tone.
- To compare these parameters between typically developing (TD) children and DD children with hypertonia and hypotonia.
Main Methods:
- Electromyography (EMG) measured muscle activity.
- BTS G-Walk device assessed acceleration.
- Participants included TD children (n=18), DD children with hypertonia (n=12), and DD children with hypotonia (n=10).
Main Results:
- DD children with hypertonia showed lower rectus abdominal and quadriceps muscle activity compared to TD children.
- DD children with hypotonia exhibited higher tibialis anterior muscle activity and a greater trunk angle than TD children.
- Vertical acceleration was reduced in DD children with hypertonia versus TD children.
Conclusions:
- Distinct muscle activity and acceleration patterns exist in DD children with hypertonia and hypotonia during sit-to-stand.
- These findings support the development of tailored intervention programs based on individual muscle tone characteristics in DD children.
Abstract:
Developmental delays cover a wide range, with different movement characteristics occurring depending on differences in muscle tone. We aimed to investigate muscle activity and acceleration during sit-to-stand in developmentally delayed (DD) children with different muscle tones. Forty participants were divided into three groups: typically developing (TD) children (n=18), DD children with hypertonia (n=12), and DD children with hypotonia (n=10). Electromyography was used to measure muscle activity and BTS G-Walk was used to measure acceleration. As a result, the activities of the rectus abdominal muscle and quadriceps muscle were lower in DD children with hypertonia than in TD children (P<0.05). The activity of the tibialis anterior muscle was higher in DD children with hypotonia than in TD children (P<0.05). The trunk angle was greater in DD children with hypotonia than in TD children (P<0.05), and vertical acceleration was lower in DD children with hypertonia than in TD children (P<0.05). Based on these differences, we will be able to provide intervention programs appropriate for the characteristics of DD children with different muscle tone.
