Isokinetics and Exercise Science - Volume 28, issue 4
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Isokinetics and Exercise Science (IES) is an international journal devoted to the study of theoretical and applied aspects of human muscle performance. Since isokinetic dynamometry constitutes the major tool in this area, the journal takes a particular interest in exploring the considerable potential of this technology.
Isokinetics and Exercise Science publishes studies associated with the methodology of muscle performance especially with respect to the issues of reproducibility and validity of testing, description of normal and pathological mechanical parameters which are derivable from muscle testing, applications in basic research topics such as motor learning paradigms and electromyography. The journal also publishes studies on applications in clinical settings and technical aspects of the various measurement systems employed in human muscle performance research.
Isokinetics and Exercise Science welcomes submissions in the form of research papers, reviews, case studies and technical reports from professionals in the fields of sports medicine, orthopaedic and neurological rehabilitation and exercise physiology.
Abstract: We report a longitudinal survey of a 53-year-old man suffering from right knee osteoarthritis who has undergone total knee replacement (TKR). We aimed at evaluating the effect of a short preoperative isokinetic strengthening program on the functional status, pain, and quadriceps and hamstrings strength before and after TKR. The patient performed a 4-week (6 sessions) preoperative isokinetic strengthening program of the quadriceps and hamstrings. The findings for the concentric strength at 60 ∘ /s, 6-minute walk test (6MWT), and Knee injury and Osteoarthritis Outcome Score (KOOS) were recorded. At baseline the patient presented with an overall KOOS…score of 44%, a 6MWT of 444 m, a 63% and 21% strength deficits of the quadriceps and hamstrings, respectively. Following the strengthening program, the quadriceps strength of the operated limb improved (+ 121 Nm; + 83%), but the function as reflected by the KOOS score remained unchanged. Following the TKR, the concentric isokinetic strength of the quadriceps reappeared altered (63% of deficit) despite pain and functional improvements. This case report underlines the importance of functional evaluation rather than the maximal strength to assess the effectiveness of TKR. However, further studies are necessary to conceptualize the meaning of maximal strength measurement and the impact of associated deficits, if any.
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Keywords: Knee osteoarthritis, total knee arthroplasty, muscle strength, rehabilitation