Baby carriage: infants walking with loads

Jessie S Garciaguirre1, Karen E Adolph, Patrick E Shrout

  • 1Department of Psychology, New York University, New York, NY 10003, USA. jsg251@nyu.edu

Child Development
|March 27, 2007
PubMed

Insights

Carrying loads, even 15% of body weight, significantly disrupts infant walking, affecting gait and footfall patterns. Infants show unique leaning responses to asymmetrical loads, differing from adults.

Area of Science:

  • Developmental Psychology
  • Biomechanics
  • Motor Control

Background:

  • Infant balance control is crucial for independent walking.
  • Understanding how infants adapt to external perturbations is key to developmental research.

Purpose of the Study:

  • To investigate the effects of load carriage on infant gait stability and patterns.
  • To analyze infant postural responses to symmetrical and asymmetrical loads.

Main Methods:

  • 14-month-old infants walked with 15% body weight in shoulder packs (symmetrical and asymmetrical loads).
  • Gait parameters and footfall patterns were analyzed.
  • Infant postural responses to loads were observed.

Main Results:

  • Both load types disrupted alternating gait and led to less mature footfall patterns.
  • Back loads most severely impacted walking.
  • Infants leaned with asymmetrical loads, unlike adults who lean away.
  • Less experienced walkers and those with chubbier proportions were more affected.

Conclusions:

  • Load carriage presents significant balance challenges for new walkers.
  • Infants utilize distinct, developing strategies for balance control under load.
  • Findings suggest a developmental trajectory from accommodation to compensatory strategies in balance.