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Relationship between extremities in motor performance.

K J Kauranen1, H V Vanharanta

  • 1Department of Physical Medicine and Rehabilitation, Oulu University Hospital, Finland.

Perceptual and Motor Skills
|April 27, 2001
PubMed
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Motor performance in hands and feet are distinct, with hands showing stronger correlations between themselves than with feet. Age does not significantly alter these relationships, suggesting specialized tests for lower extremity motor skills.

Area of Science:

  • Neuroscience
  • Human Movement Science
  • Kinesiology

Background:

  • Motor performance varies across different body parts.
  • Understanding inter-extremity relationships is crucial for assessing overall motor function.
  • Previous research has not fully elucidated the distinct motor performance characteristics of upper versus lower extremities.

Purpose of the Study:

  • To investigate the correlations in motor performance across different extremities (hands and feet).
  • To analyze how factors like age influence the relationship between upper and lower limb motor skills.
  • To determine if hand motor performance can predict lower extremity motor performance.

Main Methods:

  • 186 healthy, right-handed adults (21-70 years) participated.

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  • A battery of five motor performance tests was administered to both hands and feet.
  • Statistical correlation analyses were performed to assess relationships between extremities and within age groups.

    • Main Results:

    • Strongest correlations were observed between hands (r=.71-.80) and between feet (r=.57-.88).
    • Correlations between upper and lower extremities were considerably lower (r=.40-.62).
    • These inter-extremity correlations were less pronounced in younger age groups (21-30 years) compared to the overall cohort.

    Conclusions:

    • Motor performance of the hands is not a reliable predictor of lower extremity motor performance.
    • Distinct motor control mechanisms likely exist for upper and lower limbs.
    • Specific motor performance tests tailored to the lower extremities are recommended for accurate assessment.