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CURRENT ISSUEEUROPEAN JOURNAL OF PHYSICAL AND REHABILITATION MEDICINE

A Journal on Physical Medicine and Rehabilitation after Pathological Events


Official Journal of the Italian Society of Physical and Rehabilitation Medicine (SIMFER), European Society of Physical and Rehabilitation Medicine (ESPRM), European Union of Medical Specialists - Physical and Rehabilitation Medicine Section (UEMS-PRM), Mediterranean Forum of Physical and Rehabilitation Medicine (MFPRM), Hellenic Society of Physical and Rehabilitation Medicine (EEFIAP)
In association with International Society of Physical and Rehabilitation Medicine (ISPRM)
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ORIGINAL ARTICLES  


European Journal of Physical and Rehabilitation Medicine 2012 December;48(4):569-75

language: English

Does choice of angular velocity affect pain level during isokinetic strength testing of knee osteoarthritis patients?

Almosnino S. 1, 2, Brandon S. C. E. 2, 3, Sled E. A. 4

1 School of Kinesiology and Health Studies, Queen’s University, Kingston, ON, Canada;
2 Department of Mechanical and Materials Engineering Queen’s University, Kingston, ON, Canada;
3 Human Mobility Research Centre, Syl and Molly Apps Medical Research Centre, Kingston General Hospital and Queen’s University Kingston, ON, Canada;
4 School of Rehabilitation Therapy, Queen’s University, Kingston, ON, Canada


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BACKGROUND: Thigh musculature strength assessment in individuals with knee osteoarthritis is routinely performed in rehabilitative settings. A factor that may influence results is pain experienced during testing.
AIM: To assess whether pain experienced during isokinetic testing in individuals with knee osteoarthritis is dependent on the angular velocity prescribed.
DESIGN: Experimental, repeated measures.
SETTING: University laboratory.
POPULATION: Thirty-five individuals (19 women, 16 men) with tibiofemoral osteoarthritis.
METHODS: Participants performed three randomized sets of five maximal concentric extension-flexion repetitions at 60°/s, 90°/s and 120°/s. Pain intensity was measured immediately after the completion of each set. Strength outcomes for each set were the average peak moment.
RESULTS: Across gender, pain level was not significantly affected by testing velocity (P=0.18, ηp2 =0.05). There was a trend of women reporting more pain than men across all testing velocities, however this comparison did not reach statistical significance (P=0.18, ηp2=0.05). There was a significant main effect of testing velocity on strength, with the highest level attained at 60°/s. However, no difference in strength was noted when testing was performed at 90°/s or 120°/s.
CONCLUSION: A large variation in pain scores within and across conditions and gender was noted, suggesting that at the current stage: 1) isokinetic angular velocity prescription be performed on an individual patient basis; and 2) improvements in the manner pain is recorded are needed in order to reduce the variations in pain scores.
CLINICAL REHABILITATION IMPACT: Individual prescription of angular velocity may be necessary for optimal strength output and reduction of pain during effort exertion in this patient population.

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