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EUROPEAN JOURNAL OF PHYSICAL AND REHABILITATION MEDICINE
Rivista di Medicina Fisica e Riabilitativa dopo Eventi Patologici
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Indexed/Abstracted in: CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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European Journal of Physical and Rehabilitation Medicine 2011 Settembre;47(3)399-405
Isokinetic evaluation of ankle muscle strength and fatigue in patients with ankylosing spondylitis
Sahin N. 1, Ozcan E. 2, Baskent A. 2, Karan A. 3, Ekmeci O. 4, Kasikcioglu E. 5
1 Physical Medicine and Rehabilitation Department, Meram Faculty of Medicine, Selcuk University, Konya, Turkey
2 Physical Medicine and Rehabilitation Department, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey;
3 Department of Physical Medicine and Rehabilitation, Istanbul University, Istanbul, Turkey;
4 Department of Physical Medicine and Rehabilitation, Mayis Hospital, Mayis, Turkey;
5 Sports Medicine Department, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
AIM: The aim of the study was to compare the strength and fatigue of ankle plantarflexor/dorsiflexor muscles using isokinetic dynamometer in patients with ankylosing spondylitis (AS) versus healthy control subjects.
DESIGN: A controlled study
SETTING: Outpatients clinic of our Department of Physical Medicine and Rehabilitation.
POPULATION:Twenty-six AS patients and 26 control subjects participated in this study.
METHODS: In both groups the isokinetic tests are conducted by isokinetic dynamometer.The evaluations were made in plantarflexion/dorsiflexion patterns;peak torque, agonist/antagonist ratio and work fatigue isokinetic parameters were evaluated for the ankle 30 º/s, 60º/s, 120º/s angular velocities. Pain severity, clinical findings, and functional status were also evaluated in the study group.
RESULTS: In the patient group, ankle plantarflexion muscle strength was significantly lower compared to the control group in all angular velocities (P<0.05). Agonist/antagonist ratio was significantly lower in the patient group compared to the control group in all angular velocities (P<0.01). The work fatigue was decreased for bilateral ankle plantarflexors at 120º/s angular velocities (P<0.05). There was no significant difference between the measurements of ankle dorsiflexors (P>0.05). There was no relation between the decreased muscle strength and pain severity, clinical findings, and functional status of AS patients.
CONCLUSION: We found ankle muscles fatigue and decreased ankle plantarflexor muscle strength in patients with AS compared to control subjects.