نتایج جستجو برای: isometric contraction

تعداد نتایج: 67327  

2015
Martin Behrens Anett Mau-Moeller Matthias Weippert Josefin Fuhrmann Katharina Wegner Ralf Skripitz Rainer Bader Sven Bruhn

This study investigated effects of caffeine ingestion (8 mg/kg) on maximum voluntary torque (MVT) and voluntary activation of the quadriceps during isometric, concentric and eccentric contractions. Fourteen subjects ingested caffeine and placebo in a randomized, controlled, counterbalanced, double-blind crossover design. Neuromuscular tests were performed before and 1 h after oral caffeine and ...

Journal: :Revista brasileira de fisioterapia (Sao Carlos (Sao Paulo, Brazil)) 2010
Poliana H Leite Ruth C Melo Marcelo F Mello Ester da Silva Audrey Borghi-Silva Aparecida M Catai

BACKGROUND the magnitude of cardiovascular responses is dependent on the static and dynamic components as well as the duration and intensity of the contraction performed. OBJECTIVE to evaluate the heart rate responses to different percentages of isometric contractions in 12 patients (63 ± 11.6 years) with coronary artery disease and/or risk factors for coronary artery disease that were partic...

Journal: :BioMed research international 2016
Vilma Juodzbaliene Tomas Darbutas Albertas Skurvydas Marius Brazaitis

UNLABELLED The aim of the study was to determine the effect of different muscle length and visual feedback information (VFI) on accuracy of isometric contraction of elbow flexors in men after an ischemic stroke (IS). MATERIALS AND METHODS Maximum voluntary muscle contraction force (MVMCF) and accurate determinate muscle force (20% of MVMCF) developed during an isometric contraction of elbow f...

2014
Hiroyuki Fujisawa Hiroto Suzuki Emi Yamaguchi Hiromi Yoshiki Yui Wada Aya Watanabe

[Purpose] This study aimed to determine the effect of varying hip flexion angle on hip muscle activity during isometric contraction in abduction. [Subjects] Twenty-seven healthy men (mean age=21.5 years, SD=1.2) participated in this study. [Methods] Surface electromyography (EMG) was recorded of the upper portion of the gluteus maximus (UGM), lower portion of the gluteus maximus (LGM), tensor f...

2011
Mathias Reiser Dirk Büsch Jörn Munzert

The purpose of this training study was to determine the magnitude of strength gains following a high-intensity resistance training (i.e., improvement of neuromuscular coordination) that can be achieved by imagery of the respective muscle contraction imagined maximal isometric contraction (IMC training). Prior to the experimental intervention, subjects completed a 4-week standardized strength tr...

2014
Jessica McGuire Lara A. Green David A. Gabriel

This study compared the effects of a simple versus complex contraction pattern on the acquisition, retention, and transfer of maximal isometric strength gains and reductions in force variability. A control group (N = 12) performed simple isometric contractions of the wrist flexors. An experimental group (N = 12) performed complex proprioceptive neuromuscular facilitation (PNF) contractions cons...

Journal: :PloS one 2015
Akira Saito Hiroshi Akima

Although activity of the rectus femoris (RF) differs from that of the other synergists in quadriceps femoris muscle group during physical activities in humans, it has been suggested that the activation pattern of the vastus intermedius (VI) is similar to that of the RF. The purpose of present study was to examine activation of the VI during isometric hip flexion. Ten healthy men performed isome...

Journal: :Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology 1999
S Kumar Y Narayan

The objective of this study was to determine the frequency profile, median frequency (MF) and mean power frequency (MPF) of trunk muscles in an isometric graded maximal voluntary contraction (MVC) in isometric axial trunk rotation from a neutral upright seated posture. Twelve young healthy subjects (seven males, five females) were instrumented with surface electrodes on their external obliques,...

جبل‌عاملی, محمود, ابراهیمی‌تکامجانی, اسماعیل, هادیزاده‌خرازی, همایون , کریمی, حسین , گوهرپی, شاهین,

ABSTRACT The patellar stability is maintained by ligaments. Muscles and joint capsule. Due to vastus medialis atrophy patella is moving outward and finally causes lateral hyperpressure syndrome. Which is painfull. This is a common syndrome that too many patients suffered from it. The perpose of this study is to determine the level of activity of medial and lateral muscles of the pate...

Journal: :Jurnal Ilmiah Keperawatan Orthopedi 2021

Femur fracture is a in the largest bone body. The femur requires significant force to fracture. One of treatments for femoral reduction and immobilization using traction. Immobilization traction-attached patients before preoperatively isometric exercises maintain muscle strength. Isometric exercise contraction exercise, patient contracts muscles without moving prevent atrophy. purpose this pape...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید