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Knee position sense: does the time interval at the target angle affect position accuracy?

Shmuel Springer1, Dor Kelman2, Moshe Brand3

  • 1Faculty of Health Sciences, Department of Physical Therapy, Ariel University: Hubert Building, Room 412, Ariel, Israel 40700, Israel.

Journal of Physical Therapy Science
|November 30, 2017
PubMed
Summary
This summary is machine-generated.

The duration spent at a target angle in knee joint position sense (JPS) tests impacts reliability. A 9-second interval showed poor test-retest reliability for knee JPS accuracy.

Keywords:
Joint position senseKneeReliability

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Area of Science:

  • Kinesiology
  • Biomechanics
  • Neuroscience

Background:

  • Joint position sense (JPS) is crucial for motor control and proprioception.
  • Understanding factors influencing JPS measurement reliability is vital for clinical applications.

Purpose of the Study:

  • To investigate how the time interval at a target angle affects knee JPS repositioning accuracy.
  • To evaluate the impact of these time intervals on the test-retest reliability of knee JPS measurements.

Main Methods:

  • Twenty healthy participants underwent knee JPS testing at target angles (40°-60°).
  • Reposition accuracy was assessed after holding the angle for 3, 6, 9, and 12 seconds.
  • Measurements were repeated after one week to determine test-retest reliability using absolute error (AE).

Main Results:

  • No significant differences in absolute error (AE) were observed across different time intervals or between test sessions.
  • Fair-to-good reliability was found for intervals of 3, 6, and 12 seconds.
  • A poor reliability was noted specifically for the 9-second interval.

Conclusions:

  • The memorization time at the target angle can influence the reliability of knee JPS testing.
  • Practitioners should consider the 9-second interval potentially compromising test-retest reliability in knee JPS assessments.