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Related Experiment Videos

Reliability of functional knee tests in normal athletes

M A Risberg1, I Holm, A Ekeland

  • 1Surgical Clinic, Ullevaal Hospital, Oslo, Norway.

Scandinavian Journal of Medicine & Science in Sports
|February 1, 1995
PubMed
Summary

The triple jump and stairs hop tests are reliable for assessing functional limitations in athletes with anterior cruciate ligament injuries. However, the figure 8 and vertical jump tests demonstrated poor reproducibility and are not recommended.

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Area of Science:

  • Sports Medicine
  • Orthopedics
  • Biomechanics

Background:

  • Anterior cruciate ligament (ACL) injuries often lead to functional limitations.
  • Accurate assessment of these limitations is crucial for rehabilitation and return to sport.
  • Reproducibility of functional tests is essential for reliable clinical evaluation.

Purpose of the Study:

  • To evaluate the reproducibility of four common functional tests used in assessing athletes.
  • To determine which functional tests demonstrate reliable performance over time.

Main Methods:

  • Twenty-one healthy athletes performed four functional tests twice, with a 3.9-week interval.
  • Tests included: Figure 8, Vertical Jump, Triple Jump, and Stairs Hopple.
  • Reliability was assessed using the coefficient of variation (CV).

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Main Results:

  • The Figure 8 test showed significant performance differences between trials.
  • The Vertical Jump test exhibited a higher CV (7.7%), indicating lower reliability.
  • The Triple Jump test (CV 2.0%) and Stairs Hopple test demonstrated good reproducibility.

Conclusions:

  • The Triple Jump and Stairs Hopple tests are reliable for assessing functional performance in athletes.
  • The Figure 8 and Vertical Jump tests lack sufficient reproducibility for clinical use in this population.