BACKGROUND AND PURPOSE Studies in subjects with spastic hypertonia indicate that the higher resistance to stretch in the spastic muscles is not only due to hyperactive stretch reflexes but also to changes in the muscle-tendon unit (nonreflex components). The aim of this study was to compare the test-retest reliability of two methods: hand-held dynamometry and isokinetic dynamometry for the eval...

This paper presents a three-component fixed dynamometer based on a strain gauge, which reduces output errors produced by the cutting force imposed on different milling positions of the workpiece. A reformative structure of tri-layer cross beams is proposed, sensitive areas were selected, and corresponding measuring circuits were arranged to decrease the inaccuracy brought about by positional va...

This study evaluates the standardized strength test in the Constant-Murley shoulder assessment of adults with healthy shoulders in a randomized, single-blind design. The following questions were to be answered: (1) Can the spring balance and a digital dynamometer both yield the same result? (2) What is the intraobserver and interobserver reliability of the strength test? (3) Is the strength tes...

The European Commission is examining test procedures to ensure that light-duty vehicle emissions are well controlled both in real use and over the legislative test cycle. At the same time, the UN Working Party on Pollution and Energy (GRPE) has developed a Worldwide harmonised Light vehicles Test Procedure (WLTP) that is expected to be used for Type Approval in the EU in the future. To identify...

BACKGROUND Handgrip strength is currently considered a predictor of overall muscle strength and functional capacity. Therefore, it is important to find reliable and affordable instruments for this analysis, such as the modified sphygmomanometer test (MST). OBJECTIVES To assess the concurrent criterion validity of the MST, to compare the MST with the Jamar dynamometer, and to analyze the repro...

[Purpose] This study aimed to develop a simple, inexpensive, and accurate method for measuring the strength of shoulder flexion (Experiment 1) and evaluate the bilateral force deficit in shoulder flexion (Experiment 2) in healthy subjects. [Subjects and Methods] In Experiment 1, maximal voluntary contractions (MVCs) in isometric shoulder flexion were measured on both sides using an isometric dy...

An innovative downscale test rig called V-Track has been constructed for wheel-rail contact experiments under impact loading conditions. In this paper, a force measurement system termed dynamometer was developed in to measure the forces. The consists of four 3-component piezoelectric sensors and mounted between wheel assembly steel frame V-Track, enabling it forces transmitted from interface fr...

introduction: the ability to accurately measure forces produced by orthodontic appliances during orthodontic treatment is desirable. the aim of the present study was to compare forces measured by mechanical formulae designed with a software program and those experimentally measured by a dynamometer to find a scientific way to determine the exact amount of activation needed for applying a force ...

OBJECTIVE The aim of this study was to measure lower extremity isometric strength in patients with juvenile idiopathic arthritis (JIA) and to evaluate the usefulness of an adjustable dynamometer chair in the clinical work. METHODS Twenty-five children with JIA and 25 healthy, age-matched controls, aged 7-12 (mean age 10.1) were studied. The isometric maximal strength of knee and ankle muscles...