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Related Experiment Video

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Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
08:24

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Measuring movement fluency during the sit-to-walk task.

A Kerr1, V P Pomeroy, P J Rowe

  • 1Department of Biomedical Engineering, University of Strathclyde, 106 Rottenrow, Glasgow G4 0NW, United Kingdom. a.kerr@strath.ac.uk

Gait & Posture
|November 6, 2012
PubMed
Summary
This summary is machine-generated.

Movement fluency in adults can be objectively measured using hesitation, coordination, and smoothness during sit-to-walk tasks. These variables reveal significant differences in movement ability across age and fall risk groups.

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Area of Science:

  • Biomechanics
  • Rehabilitation Science
  • Gerontology

Background:

  • Objective measurement of movement fluency is crucial for physical rehabilitation.
  • Current methods for assessing movement fluency lack objectivity.
  • Sit-to-walk (STW) movement is a fundamental functional task for assessing mobility.

Purpose of the Study:

  • To determine if measurable movement fluency variables differ between adults with varying movement abilities.
  • To investigate hesitation, coordination, and smoothness during the STW movement.
  • To establish objective markers for movement fluency in adults.

Main Methods:

  • Kinematic data from three groups (young adults, older adults, older adults at risk of falling) were analyzed.
  • Movement fluency variables included hesitation (Center of Mass velocity), coordination (joint rotation overlap), and smoothness (Center of Mass jerk).
  • Analysis of variance (ANOVA) was used to test for group differences in fluency variables.

Main Results:

  • Significant differences in hesitation, coordination, and smoothness were found among the groups.
  • Older adults at risk of falling exhibited the most hesitation and poorest coordination.
  • Younger adults demonstrated the highest smoothness, indicating more fluid movement compared to older adults.

Conclusions:

  • Hesitation, coordination, and smoothness are valid indicators of movement fluency in adults.
  • These objective measures have potential applications in research and clinical practice for assessing mobility.
  • Quantifying movement fluency can aid in personalized rehabilitation strategies and fall prevention.