Isokinetics and Exercise Science - Volume 25, issue 2
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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: OBJECTIVE: Our purpose was to describe the reproducibility and validity of measurements of hip extension strength obtained by hand-held dynamometry from patients participating in inpatient rehabilitation. METHOD: Strength measurements were obtained bilaterally from 24 women and 42 men (33-92 years) patients on admission and again the following day. The patients' ability to independently stand from a 45 cm surface and to walk 30 meters was noted. RESULTS: The relative test-retest reproducibility of the measurements was supported by intraclass correlation coefficients of 0.703 to 0.835. However, absolute reliability as indicated by minimal detectable changes,…was not so good. Known-groups validity was evinced by greater hip extension strength among those able to independently complete a sit-to-stand and to walk 30 meters. CONCLUSION: Hip extension strength measurements obtained as described herein in an inpatient rehabilitation setting demonstrate good relative reproducibility and known groups validity.