Biomechanical analysis of gait patterns in children with intellectual disabilities.
Kids with ID walk short, flat, and weak—train calf strength and single-leg balance, not just walking laps.
01Research in Context
What this study did
Beck et al. (2021) filmed kids with intellectual disability while they walked across a lab floor.
They measured step length, foot angle, push-off force, and leg strength.
The same tests were given to typically-developing kids for comparison.
What they found
The ID group took shorter, flatter steps and spent less time on one foot.
Their big-toe push-off was weak and leg strength was low.
The gait looked uneven side-to-side, not just slow.
How this fits with other research
Almuhtaseb et al. (2014) already showed that gait quirks are common in ID; the new data add exact numbers for children.
Oppewal et al. (2018) saw the same pattern in adults, noting ID gait mirrors that of neurotypical people twenty years older—so the problem starts young and stays.
Kachouri et al. (2016) gave boys an eight-week strength-and-balance program and strength went up; Beck et al. (2021) now say weak push-off is a core issue, so that training target makes sense.
Knight et al. (2019) found trained adults with ID had near-normal muscle power, hinting that strength work can close most of the gap the kids show.
Why it matters
If a child with ID walks short and flat, check leg and foot strength, not just speed.
Add calf raises, toe walks, and wobble-board balance to PE or therapy minutes.
Track single-leg stand time as an easy probe—gain here may smooth out the uneven gait and cut fall risk later.
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02At a glance
03Original abstract
BACKGROUND: Children with intellectual disabilities (ID) typically master walking skills much later than typically developing (TD) children and have poor postural control ability. This study aimed to explore the gait ability and characteristics of children with ID and whether there is any difference in walking ability between them and TD children. METHOD: In this study, integrating kinematic-biomechanic-dynamic measurement methods and corresponding analysis methods (video analysis, three-dimensional force analysis and electromyography test analysis) were used to characterise and compare the gait patterns between ID children and TD children. RESULTS: ID children's step length/leg length ratio was lower than TD children. The left-leg single-leg support time and step length of ID children were shorter than TD children. While walking, ID children touched the ground with the whole foot pad and could not powerfully thrust against the ground with their toes. Their left legs had obvious disadvantages compared with their right legs. ID children's lower limb muscle strength was lower than TD children, and their thigh muscles had an obvious compensation function. CONCLUSIONS: Correcting ID children's gait should be an important teaching goal for physical education institutors and teachers. Muscle-strength and flexibility training can help ID children reinforce core strength and better coordinate lower limbs.
Journal of intellectual disability research : JIDR, 2021 · doi:10.1111/jir.12872