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Keywords: Muscle activation
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Journal Articles
J Exp Biol (2021) 224 (9): jeb233965.
Published: 04 May 2021
... force production. The force-rate cost could contribute substantially to the overall cost of movements that require cyclic muscle activation, such as locomotion. Summary: The energetic cost of cyclic isometric force production increases sharply with cycle frequency and in proportion to the rate of...
Journal Articles
J Exp Biol (2019) 222 (22): jeb209924.
Published: 27 November 2019
... al., 2016 ; Joumaa et al., 2007 , 2008b ; Leonard et al., 2010a ; Powers et al., 2014 ; Rassier et al., 2003 ). Skeletal muscle myofibril Sarcomere length instability Sarcomere length dispersion Muscle activation Residual force enhancement Experiments were conducted using an...
Journal Articles
J Exp Biol (2018) 221 (15): jeb169623.
Published: 10 August 2018
... joint velocity calculated using the slack test method increased whereas V F decreased with muscle activation level ( P ≤0.03). Passive and low-level quick releases elicited higher V F values (≥41.8±10.7 cm s −1 ) compared with the ballistic condition (36.3±8.7 cm s −1 ), while quick releases applied at...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (5): 828–836.
Published: 01 March 2017
... element within muscle sarcomeres, is activated upon Ca 2+ influx in skeletal muscle. Titin Connectin Muscle activation Muscular dystrophy with myositis ( mdm ) Elastic recoil Muscle stiffness increases ∼3-fold from the passive state to maximum isometric force ( Campbell and Moss, 2002...
Journal Articles
J Exp Biol (2016) 219 (7): 1041–1049.
Published: 01 April 2016
...Sina David; Johannes Funken; Wolfgang Potthast; Alexander Blanke ABSTRACT Insects show a great variety of mouthpart and muscle configurations; however, knowledge of their mouthpart kinematics and muscle activation patterns is fragmentary. Understanding the role of muscle groups during movement and...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (2): 285–294.
Published: 01 January 2016
...-tendon force Muscle activation Muscle-tendon architecture At the level of myofibril and sarcomere organization, the underlying machinery of vertebrate striated muscle is highly conserved in terms of the proteins that serve as molecular motors to produce force and change length, the regulatory...
Journal Articles
J Exp Biol (2013) 216 (2): 260–274.
Published: 15 January 2013
... sandfish during walking, burial and swimming, here we use high-speed X-ray and visible light imaging with synchronized electromyogram (EMG) recordings of epaxial muscle activity. While moving on the surface, body undulation was not observed and EMG showed no muscle activation. During subsurface sand...
Includes: Supplementary data
Journal Articles
J Exp Biol (2005) 208 (12): 2377–2387.
Published: 15 June 2005
...@ucsd.edu ) 29 3 2005 © The Company of Biologists Limited 2005 2005 muscle activation strain swimming lamnid Isurus Previous studies have examined the role of skeletal muscle in the mechanics of steady swimming of a number of bony fish species (reviewed in Altringham and...
Journal Articles
J Exp Biol (2005) 208 (2): 409–417.
Published: 15 January 2005
... of the fish. This study was then extended to include a different species of salmonid, brook trout Salvelinus fontinalis , to explore the generality of TnT modulation of muscle activation. Muscle contractile properties were determined from anterior and posterior muscle, and relative expression of S1...
Journal Articles
J Exp Biol (2003) 206 (7): 1117–1126.
Published: 01 April 2003
... ±4.8% in the posterior body position. Strain was in-phase with local midline curvature. In addition, strain amplitude calculated from a bending beam model closely matched strain measured using sonomicrometry at all three body positions. There is a high degree of similarity in red muscle activation...
Journal Articles
J Exp Biol (2001) 204 (13): 2277–2287.
Published: 01 July 2001
...Boris I. Prilutsky; Robert J. Gregor SUMMARY There has been no consistent explanation as to why humans prefer changing their gait from walking to running and from running to walking at increasing and decreasing speeds, respectively. This study examined muscle activation as a possible determinant of...