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Published on: May 17, 2024
Study on the motor development and biomechanical characteristics of children aged 3-5 years
Bojie Hou1, Jie Zhao2, Zhongqiu Ji1
1College of Physical Education and Sport Science, Beijing Normal University, Beijing, China.
Insights
Children
Area of Science:
- Pediatric biomechanics
- Motor development
- Human movement science
Background:
- Gait development in early childhood is crucial for motor skill acquisition.
- Understanding age-related changes in gait biomechanics informs developmental assessments.
Purpose of the Study:
- To analyze gait biomechanics in children aged 3-5 years.
- To explore motor development patterns during this critical period.
Main Methods:
- 3D gait motion and ground reaction forces collected using infrared systems and force plates.
- Inverse dynamics analysis performed with specialized software.
- Analysis of joint coordination, muscle forces, and gait stability.
Main Results:
- Joint angle coordination remained consistent; joint moment control simplified with age.
- Muscle strength, joint power, and gait stability improved significantly from 3 to 5 years.
- Enhanced movement efficiency and adaptability observed with age.
Conclusions:
- Gait control matures from hip/knee dependence in 3-year-olds to increased ankle involvement at 4 years.
- By age 5, children demonstrate more complex, stable, and refined gait control.
- Age 4 represents a critical transitional period in gait development.
Objective:
This study analyzes changes in gait biomechanics in children aged 3-5, exploring motor development patterns during this critical period.
Methods:
Using the BTS SMART DX infrared system and Kistler 3D force plate, three-dimensional gait motion and ground reaction forces were collected from 3-, 4-, and 5-year-olds during walking. Inverse dynamics analysis with Anybody 7.4 software provided detailed joint moments, muscle forces, and joint angles. Coordination patterns of joint angles and moments, Lyapunov exponents, muscle force data, joint energy absorption, and power were further analyzed.
Results:
Joint angle coordination patterns remained consistent across ages, while joint moment control patterns simplified from three to two with age, indicating progressive joint control development. Muscle strength, joint power, and gait stability improved with age, reflecting enhanced movement efficiency and adaptability to complex motor tasks.
Conclusion:
Gait control in 3-year-olds is immature and mainly hip- and knee-dependent. At 4 years, children show significant joint coordination changes with increased ankle involvement, marking a transitional phase. By age 5, children exhibit more complex and stable gait control, though still developing. Overall, gait stability and coordination increase with age, with 4 years as a critical developmental period and 5 years showing more refined control characteristics.
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