Isokinetics and Exercise Science - Volume 6, issue 1
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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: The purpose of this study was to examine angular velocity fluctuations during isokinetic eccentric movements. The Biodex and KinCom isokinetic dynamometers were used for data recording and analysis. Kinematic analysis was performed to calculate the criterion angular velocity against which the velocity recorded by the dynamometer was tested. The period of constant velocity expressed as a percentage of the whole range of motion ranged between 76.5 and 20.9% for the Biodex and for preset velocities ranging from 30 to 150°/s. The respective values for the KinCom were 66.7–28.1% from 30 to 250°/s. It was also found that the dynamometers' angular…velocity measurements are only approximations of the actual angular velocity. In conclusion the results of this study indicate that at high velocities and in cases where the range of motion is limited, the effects of angular velocity to various mechanical parameters such as peak moment, power, work, etc. have to be considered or the measurements have to be limited only to constant velocity periods throughout the range of motion.