نتایج جستجو برای: eccentric section

تعداد نتایج: 165903  

Journal: :Journal of strength and conditioning research 2010
Cesar M P Meylan Ken Nosaka Jonathan P Green John B Cronin

The purposes of this study were to determine the (a) magnitude of variability associated with certain eccentric variables (eccentric peak velocity, displacement, and ground contact time) during unilateral countermovement jump performance (vertical [VCMJ], horizontal [HCMJ], and lateral [LCMJ]); (b) differences between limbs as well as between jumps; and (c) relationship between jump performance...

خدیجه اوتادی, , سعید طالبیان مقدم, , غلامرضا علیایی, , محمدرضا هادیان, ,

Introduction: It is suggested that quadriceps muscle has an important role in stability & mobility of Knee joint in athletics and normal individuals therefore, the purpose of this study was evaluation of the strength in Power Athletics (PA) and Normal Un-trained Individuals (NUI) groups. Methods and Materials: 31 Females (20 NUI & 11 PA) participated in this study. For measuring the strength, e...

Journal: :Lecture notes in civil engineering 2023

Abstract Traditional hollow concrete filled steel tube components are mainly used in the transformer power structure. In order to improve mechanical properties and application scope of components, a new type reinforcement high-strength combination structure is proposed. Given that construction system frequently an eccentric stress condition throughout structural system, finite element analysis ...

2016
C. del Burgo S. Ertel

Context. Imaging of debris disks has found evidence for both eccentric and offset disks. One hypothesis is that these provide evidence for massive perturbers, for example planets or binary companions, that sculpt the observed structures. One such disk was recently observed in the far-IR by the Herschel Space Observatory around ζ2 Reticuli. In contrast with previously reported systems, the disk ...

ژورنال: طب مکمل 2018

Introduction: Exercise-related stress changes the amount of cytokines produced. Dietary supplements can accelerate the muscle recovery process. Q10 is one of the most effective and nutritional supplements that is prescribed to reduce the inflammatory-oxidative damage. Therefore, this study aimed to investigate the effect of Q10 supplementation and recovery in water on serum levels of IL-6 and I...

Journal: :IOP conference series 2023

Abstract This study aims to evaluate the effect of cross-section modification on performance square reinforced concrete (SRC) columns discontinuously strengthened with CFRP bands. In line this research aim, SRC under eccentric and concentric compression was compared that circularized RC (CSRC) columns. Six 800 mm height including three 150 side length CSRC 212 diameter were prepared tested. The...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1967
K G McCracken

M\Ian's knowledge of the properties of interplanetary space has advanced radically since 1962, the major part of this advance occurring since the commencement of the International Years of the Quiet Sun. The IQSY has, in fact, been quite unique in that it has seen the augmentation of the extensive synoptic studies of both geophysical and solar phenomena such as were mounted during the IGY and i...

Journal: :Journal of neurophysiology 2001
Y Fang V Siemionow V Sahgal F Xiong G H Yue

Despite abundant evidence that different nervous system control strategies may exist for human concentric and eccentric muscle contractions, no data are available to indicate that the brain signal differs for eccentric versus concentric muscle actions. The purpose of this study was to evaluate electroencephalography (EEG)-derived movement-related cortical potential (MRCP) and to determine wheth...

2014
Mandana Rezaei Ismael Ebrahimi-Takamjani Ali A. Jamshidi Behnoush Vassaghi-Gharamaleki Nosratollah Hedayatpour Naser Havaei

BACKGROUND The aim of this study was to investigate muscle damage indicators and electromyography activities of quadriceps muscles at 25° of hip flexion in untrained healthy females after an eccentric exercise induced muscle fiber damage. METHODS A total of 14 healthy females participated in this pre-experimental study. The subjects performed maximal eccentric quadriceps contractions at 25˚ o...

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