Absolute und relative Kraftausdauer der Kniebeuge- und -streckmuskulatur: eine Reliabilitätsstudie unter Verwendung des IsoMed 2000-Dynamometers

Abstract

In general, for extension measurements concerning KADabs and - in an weakened form - KADrel high ICC -values of 0.76-0.89 combined with clinically acceptable values of SEM% of 1.2-5.9 % could be found. For flexion measurements this only applies to KADabs, whereas results for KADrel turned out to be clearly weaker with ICC- and SEM% values of 0.42-0.62 and 9.6-17.7 % and leave considerable doubts on the clinical usefulness. However, if there should be after all a need to measure KADrel for flexion, it is - in view of the stronger reliability results - recommended (i) to concentrate on the calculation of KADrelB, (ii) to use the parameter Work and - in view of considerable familiariszation and learning effects of ≈10 % - (iii) to include a familiarisation period that extends exceeds the familiarisation session conducted in the present study.

Kinesio Taping Improves Perceptions of Pain and Function of Patients With Knee Osteoarthritis: A Randomized, Controlled Trial

“…To ensure a 90°flexion during the testing situation, the knee joint was fixed at 95°to control the deformation of the shin pad. 35 Gravity correction was made in a relaxed extension using integrated function of the software. Before starting the measurement, the subjects performed 2 submaximal exertions with a 2-minute break in between, in order to become familiar with the dynamometer.…”

Angular Velocity Affects Trunk Muscle Strength and EMG Activation during Isokinetic Axial Rotation

“…The reliability of the instrumentation has been evaluated previously [24]. The subjects' feet were secured in straps to a platform that could be adjusted to produce a consistent hip and knee position.…”

“…EMG measurement has been extensively used to assess the pattern and magnitude of trunk muscles in maximal isometric and graded isometric axial rotational contractions [16, 18, 22] and identify their functional roles as a result [20, 23]. In comparison with isometric measurement, isokinetic measurement has better reliability and precision [24–26] and has been increasingly used for dynamic strength measurement to understand the mechanical profile of skeletal muscle, including trunk muscles [27, 28]. Specifically, a number of studies were aimed at the trunk rotator muscle performances using this measurement in various kinds of subjects [29, 30].…”

ACTN3 Genotypes and Their Relationship with Muscle Mass and Function of Kosovan Adults

“…Isometric handgrip strength was assessed in a sitting position through recording the best of two trials by maximally squeezing the adaptable dynamometer (JAMAR, Patterson Medical, Warrenville, IL, USA) with the self-reported dominant hand (1 min rest in between trials) [36]. Isokinetic dynamometry [37] was used to assess the absolute and relative knee extensors isokinetic concentric peak torque at 60°/s unilaterally on the self-reported dominant side (Biodex System 4 Pro, Biodex Medical Systems, Inc., Shirley, NY, USA). During the assessment, participants were fixed on the device's chair with straps over the shin, thigh, pelvic, and crossed above upper torso, while holding the supporting sideway handles [38].…”