Changes in the gait patterns of growing children

Area of Science:

• Pediatrics
• Biomechanics
• Human Movement Science

Background:

• Understanding typical gait development in children is crucial for identifying developmental abnormalities.
• Previous studies have explored various aspects of pediatric gait, but comprehensive analysis linking kinematic and kinetic data across different ages and retest intervals is needed.

Purpose of the Study:

• To analyze gait patterns in normal children, focusing on time-distance parameters and ground reaction forces.
• To determine the influence of walking speed, age, and growth on these gait parameters.
• To establish optimal retesting intervals for gait analysis in children of different age groups.

Main Methods:

• Observed gait patterns in 51 normal children, including time-distance measurements and ground reaction forces.
• Retested 33 children over a two-year period at intervals of 1, 3, 6, 9, or 12 months.
• Analyzed data for dependencies on walking speed, age, height, and retest intervals.

Main Results:

• Gait time-distance measurements and ground reaction forces were dependent on walking speed and child's age.
• Child's height was the primary factor for changes in time-distance measurements with age; stride length averaged 76% of height at 1.04 m/s.
• Foot-ground reaction force components varied with age up to five years, with adult patterns emerging thereafter; growth affected measurements in children under four within 3 months, and in older children with >3-month intervals.

Conclusions:

• Gait parameters in children are age and speed-dependent, with height significantly influencing stride length.
• Ground reaction force patterns mature by age five, indicating a critical developmental window.
• Retesting intervals for gait analysis should consider the child's age and growth rate to ensure reliable data, particularly for clinical applications.