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Effect of fatigue on knee proprioception: implications for dynamic stabilization.
L A Hiemstra1, I K Lo, P J Fowler
1Orthopaedic Sport Medicine, University of Western Ontario, London, Ontario, Canada.
The Journal of Orthopaedic and Sports Physical Therapy
|October 23, 2001
Summary
Fatigue may impair knee joint stability by altering proprioception, which is the body's sense of limb position. This review examines how fatigue affects knee position sense and movement sense, impacting dynamic stabilization during activities.
Area of Science:
- Sports Medicine
- Neuromuscular Physiology
- Biomechanics
Background:
- Injuries often occur late in sports sessions, suggesting fatigue plays a role.
- Fatigue may alter neuromuscular control and dynamic knee stabilization.
- Altered proprioception is a potential mechanism linking fatigue to knee instability.
Purpose of the Study:
- To review evidence on fatigue-induced changes in knee proprioception (joint position and movement sense).
- To discuss physiological mechanisms underlying these sensory changes.
- To explore the implications for dynamic knee joint stabilization.
Main Methods:
- Literature review of experimental studies on fatigue and knee proprioception.
- Discussion of physiological mechanisms involving joint and muscle receptors.
- Analysis of afferent feedback changes due to fatigue.
Main Results:
- Fatigue can alter knee joint position sense and kinesthesia.
- Changes in afferent output from muscle and joint receptors are implicated.
- These sensory alterations may compromise dynamic knee stabilization.
Conclusions:
- Fatigue-induced proprioceptive deficits may increase knee injury risk.
- Understanding these mechanisms is crucial for injury prevention strategies.
- Further research should focus on the link between proprioception, fatigue, and knee joint control.
