نتایج جستجو برای: maximal voluntary contraction mvc

تعداد نتایج: 170421  

Journal: :Journal of sports science & medicine 2014
Sumiaki Maeo Hiroaki Kanehisa

Simultaneous voluntary contractions of antagonistic pairs (co-contraction) produce resistive forces that act against each other (Maeo et al., 2013c). It has been reported that a training program in which subjects performed voluntary co-contractions of elbow flexors and extensors with maximal effort produced significant increases in the strength capability of both muscle groups, without the use ...

Background: Knee extension torque control decreases after anterior cruciate ligament (ACL) rupture. There is a controversy in neuromuscular control changes on the uninvolved side. We intended to evaluate the steadiness and accuracy of quadriceps muscle control in the healthy and deficient sides of people with acute ACL rupture.    Methods: In this cross-sectional study, thirteen men with ACL r...

Journal: :Journal of applied physiology 2002
G Y Millet R Lepers N A Maffiuletti N Babault V Martin G Lattier

Neuromuscular fatigue of the knee extensor (KE) and plantar flexor (PF) muscles was characterized after a 65-km ultramarathon race in nine well-trained runners by stimulating the femoral and tibial nerves, respectively. One week before and immediately after the ultramarathon, maximal twitches were elicited from the relaxed KE and PF. Electrically evoked superimposed twitches of the KE were also...

Journal: :Journal of applied physiology 2011
Soichiro Iwanuma Ryota Akagi Toshiyuki Kurihara Shigeki Ikegawa Hiroaki Kanehisa Tetsuo Fukunaga Yasuo Kawakami

The present study determined in vivo deformation of the entire Achilles tendon in the longitudinal and transverse directions during isometric plantar flexions. Twelve young women and men performed isometric plantar flexions at 0% (rest), 30%, and 60% of the maximal voluntary contraction (MVC) while a series of oblique longitudinal and cross-sectional magnetic resonance (MR) images of the Achill...

Journal: :Journal of the Chinese Medical Association : JCMA 2008
Chih-Jou Lai Rai-Chi Chan Tsui-Fen Yang I-Wen Penn

BACKGROUND Long-term piano training might induce some biochemical and structural adaptations in the intrinsic muscles of the hand or change the motor strategy of the nervous system. The main purpose of this study was to analyze whether the intrinsic muscles of the hands of pianists and sedentary controls differ in electromyographic characteristics at different strengths. METHODS Fifteen colle...

Journal: :Journal of applied physiology 2012
Carolina Vila-Chã Deborah Falla Miguel Velhote Correia Dario Farina

This study examined the effects of 3 wk of either endurance or strength training on plasticity of the neural mechanisms involved in the soleus H reflex and V wave. Twenty-five sedentary healthy subjects were randomized into an endurance group (n = 13) or strength group (n = 12). Evoked V-wave, H-reflex, and M-wave recruitment curves, maximal voluntary contraction (MVC), and time-to-task-failure...

2016
Valeria Regina Silva Cássio Riccetto Natalia Miguel Martinho Joseane Marques Leonardo Cesar Carvalho Simone Botelho

INTRODUCTION AND OBJECTIVES several studies have been investigated co-activation can enhance the effectveness of PFM training protocols allowing preventive and therapeutic goals in pelvic floor dysfunctions. The objective of the present study was to investigate if an abdominal-pelvic protocol of training (APT) using gametherapy would allow co-activation of PFM and transversus abdominis/oblique ...

Journal: :Clinical Neurophysiology 2021

The aim of this study was to elucidate the characteristics motor unit (MU) firing rate in Charcot-Marie-Tooth disease type 1A (CMT1A) patients and its longitudinal change using high-density surface-electromyography (surface-EMG) MU decomposition analysis. Nineteen with CMT1A 21 force-matched healthy controls prospectively underwent surface-EMG recording vastus lateralis muscle during ramp-up su...

Journal: :International journal of occupational safety and ergonomics : JOSE 2014
Kun-Hi Liao

The purpose of this study was to examine how gender of young adults in Taiwan affected the ability of their hands to apply force regarding the use of the left or right hand and the varying sequences of force application. Maximal voluntary contraction of grip (MVCg ) and hand-grip control (HGC 50% ) of 200 participants was measured. The study discovered that gender showed significant differences...

2017
Aseel Ghazwan Sarah M. Forrest Cathy A. Holt Gemma M. Whatling

This study aims to examine alternative methods of normalization that effectively reflect muscle activity as compared to Maximal Voluntary Contraction (MVC). EMG data recorded from knee flexion-extension muscles in 10 control subjects during the stance phase of the gait cycle were examined by adopting different approaches of normalization: MVC, Mean and Peak Dynamic during gait cycles, (MDM and ...

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