Related Experiment Videos
Changes in the gait patterns of growing children
Insights
Childhood gait analysis reveals that walking speed and height influence stride length. Foot-ground reaction forces mature by age five, with growth impacting measurements in younger children over shorter intervals.
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.
Abstract:
We observed the gait patterns, including time and distance measurements and ground reaction forces, of fifty-one normal children. Thirty-three children were retested once at one, three, six, nine, or twelve months, over a two-year period, for a total of eighty-four gait observations. Time and distance measurements and foot-ground reaction force measurements were found to be dependent on walking speed and the age of the child. An increase in height with age was found to be the major factor in determining the changes in time and distance measurements with age. For example, we found that average stride length was 76 per cent of the child's height at a walking speed of 1.04 meters per second regardless of the child's age. In contrast, the three components of foot-ground reaction force (vertical, lateral, and forward directions) were observed to vary with age up to five years even when normalized. After the age of five years an adult pattern of ground reaction force emerged. In addition, we found that walking patterns of children who were more than found years old did not vary when retested within a three-month period. However, for children less than four years old, measurements were found to change due to growth during the three-month period to retesting. Similar changes due to growth were found in children more than four years old who were tested at intervals more than three months apart. This important finding may be clinically useful in the study of the effects of treatment.