Results 21 to 30 of about 121,562 (315)

On m-Isometric Semigroups, and 2-Isometric Cogenerators [PDF]

open access: yesIntegral Equations and Operator Theory, 2019
It is known that a $C_0$-semigroup of Hilbert space operators is $m$-isometric if and only if its generator satisfies a certain condition, which we choose to call $m$-skew-symmetry. This paper contains two main results: We provide a Lumer--Phillips type characterization of generators of $m$-isometric semigroups.
openaire   +3 more sources

Test-retest reliability of isometric mid-thigh pull maximum strength assessment: a systematic review [PDF]

open access: yes, 2021
The aim of this systematic review was to explore the test-retest reliability of isometric mid-thigh pull maximum strength assessment. We searched through five databases to find studies that examined the testretest reliability of peak force in the ...
Pedisic, Zeljko   +3 more
core   +1 more source

Mechanomyographic Parameter Extraction Methods: An Appraisal for Clinical Applications

open access: yesSensors, 2014
The research conducted in the last three decades has collectively demonstrated that the skeletal muscle performance can be alternatively assessed by mechanomyographic signal (MMG) parameters.
Morufu Olusola Ibitoye   +4 more
doaj   +1 more source

Assessing the Validity and Reliability of A Low-Cost Microcontroller-Based Load Cell Amplifier for Measuring Lower Limb and Upper Limb Muscular Force

open access: yesSensors, 2020
Lower and upper limb maximum muscular force development is an important indicator of physical capacity. Manual muscle testing, load cell coupled with a signal conditioner, and handheld dynamometry are three widely used techniques for measuring isometric ...
Julie Gaudet, Grant Handrigan
doaj   +1 more source

Blood pressure lowering effects of a novel isometric exercise device following a 4-week isometric handgrip intervention [PDF]

open access: yes, 2019
Background: Hypertension is the leading risk factor for global mortality. Isometric resistance exercise training reduces blood pressure (BP). However, the protocols used are often limited by cost/immobility and the use of rigid exercise modalities.
Gordon, Benjamin D. H.   +12 more
core   +1 more source

Excursion of bone-patella tendon-bone grafts during the flexion–extension movement in anterior cruciate ligament reconstruction: Comparison between isometric and anatomic reconstruction techniques

open access: yesAsia-Pacific Journal of Sports Medicine, Arthroscopy, Rehabilitation and Technology, 2015
Background/objective: The purpose of this study was to elucidate the biomechanical differences between anterior cruciate ligament (ACL) grafts reconstructed by isometric and anatomic reconstruction techniques, based on their length changes.
Yasuhiro Take   +5 more
doaj   +1 more source

Isometric Autoencoders

open access: yesCoRR, 2020
High dimensional data is often assumed to be concentrated on or near a low-dimensional manifold. Autoencoders (AE) is a popular technique to learn representations of such data by pushing it through a neural network with a low dimension bottleneck while minimizing a reconstruction error.
Matan Atzmon, Amos Gropp, Yaron Lipman
openaire   +2 more sources

Inverting a Cylinder Through Isometric Immersions and Isometric Embeddings [PDF]

open access: yesTransactions of the American Mathematical Society, 1977
It is shown that a right circular cylinder can be turned inside out through immersions which preserve its flat Riemannian metric if and only if its diameter is greater than its height. Such a cylinder can be turned inside out through embeddings which preserve its flat Riemannian metric provided its diameter is greater than (7 + 2)/7 times its height. A
Halpern, B., Weaver, C.
openaire   +1 more source

Sustained Isometric Wrist Flexion and Extension Maximal Voluntary Contractions Similarly Impair Hand-Tracking Accuracy in Young Adults Using a Wrist Robot

open access: yesFrontiers in Sports and Active Living, 2020
Due to their stabilizing role, the wrist extensor muscles demonstrate an earlier onset of performance fatigability and may impair movement accuracy more than the wrist flexors. However, minimal fatigue research has been conducted at the wrist.
Davis A. Forman   +5 more
doaj   +1 more source

Isometric Posterior Chain Peak Force Recovery Response Following Match-Play in Elite Youth Soccer Players: Associations with Relative Posterior Chain Strength

open access: yesSports, 2019
The purpose of this study was to determine changes in two tests of lower limb isometric posterior chain force (IPC-F) following 90 min of match-play in elite youth soccer players and the interaction between relative strength and recovery profile.
Emma Constantine   +4 more
doaj   +1 more source

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