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Related Experiment Videos

Stability and change in children's skill

H E Parker1, D Larkin, T R Ackland

  • 1Department of Human Movement, University of Western Australia, Nedlands.

Psychological Research
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

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Children

Area of Science:

  • Pediatric motor development
  • Biomechanics of locomotion
  • Human performance variability

Background:

  • Age-related differences in motor control are significant.
  • Understanding performance variability is crucial for assessing development.
  • Repetitive hopping tasks offer insights into motor learning and stability.

Purpose of the Study:

  • To investigate age-related changes in performance variability during hopping.
  • To analyze the reliability of hopping measures across repeated sessions.
  • To examine the influence of foot dominance on hopping performance and variability.

Main Methods:

  • Forty-five participants across five age groups (3-9 years and adults) performed one-footed hopping.
  • Measures included timing and ground-reaction-force variables (mean, standard deviation, coefficient of variation).

Related Experiment Videos

  • Repeated-measures ANOVA analyzed age, foot, and session effects on hopping performance.

    • Main Results:

    • Significant age effects were observed in most force and time variables.
    • No significant main effects for foot dominance were found.
    • Foot x Session interactions indicated learning effects in flight-time measures, with initial differences between preferred and non-preferred feet diminishing over sessions.

    Conclusions:

    • Standard deviation (SD) and coefficient of variation (CV) are more sensitive to performance changes in children than mean scores.
    • Hopping efficiency improves with age, indicated by decreased SD and CV and shorter flight times.
    • The order of limb testing is critical for accurate measurement in studies involving lateralized tasks.