Results 21 to 30 of about 296,117 (304)
Inferring muscle functional roles of the ostrich pelvic limb during walking and running using computer optimization [PDF]
, 2016 Owing to their cursorial background, ostriches (Struthio camelus) walk and run with high metabolic economy, can reach very fast running speeds and quickly execute cutting manoeuvres.
Burkholder TJ +5 more
core +1 more source
Muscle coordination of maximum-speed pedaling
Journal of Biomechanics, 1997 A simulation based on a forward dynamical musculoskeletal model was computed from an optimal control algorithm to understand uni- and bi-articular muscle coordination of maximum-speed startup pedaling. The muscle excitations, pedal reaction forces, and crank and pedal kinematics of the simulation agreed with measurements from subjects.
C C, Raasch +3 more
openaire +2 more sources
Frontiers in Systems Neuroscience, 2020 A mid-thoracic spinal cord injury (SCI) severely impairs activation of the lower limb sensorimotor spinal networks, leading to paralysis. Various neuromodulatory techniques including electrical and pharmacological activation of the spinal networks have ...
Raymond Chia +12 more
doaj +1 more source
Fatigue Induced Changes in Muscle Strength and Gait Following Two Different Intensity, Energy Expenditure Matched Runs [PDF]
, 2020 Purpose: To investigate changes in hip and knee strength, kinematics, and running variability following two energy expenditure matched training runs; a medium intensity continuous run (MICR) and a high intensity interval training session (HIIT). Methods:
Caplan, Nick +3 more
core +2 more sources
Coordination of metabolic plasticity in skeletal muscle [PDF]
Journal of Experimental Biology, 2006 SUMMARYSkeletal muscle is a highly malleable tissue, capable of pronounced metabolic and morphological adaptations in response to contractile activity(i.e. exercise). Each bout of contractile activity results in a coordinated alteration in the expression of a variety of nuclear DNA and mitochondrial DNA(mtDNA) gene products, leading to phenotypic ...
David A, Hood +3 more
openaire +2 more sources
IEEE Access, 2020 Motor planning can enable integration of sensory input to generate motor execution. However, how the brain analyses visual information and modulates its signals to the muscle have been not well studied in human.
Chuyao Jian +5 more
doaj +1 more source
Uniqueness of human running coordination: The integration of modern and ancient evolutionary innovations [PDF]
, 2016 Running is a pervasive activity across human cultures and a cornerstone of contemporary health, fitness and sporting activities. Yet for the overwhelming predominance of human existence running was an essential prerequisite for survival. A means to hunt,
Collins, D.J, Kiely, J.,
core +2 more sources
Sharing of hand kinematic synergies across subjects in daily living activities [PDF]
, 2020 The motor system is hypothesised to use kinematic synergies to simplify hand control. Recent studies suggest that there is a large set of synergies, sparse in degrees of freedom, shared across subjects, so that each subject performs each action with a ...
Gracia-Ibáñez, Verónica +4 more
core +1 more source
Muscle Coordination Is Habitual Rather than Optimal [PDF]
The Journal of Neuroscience, 2012 When sharing load among multiple muscles, humans appear to select an optimal pattern of activation that minimizes costs such as the effort or variability of movement. How the nervous system achieves this behavior, however, is unknown. Here we show that contrary to predictions from optimal control theory, habitual muscle activation patterns are ...
De Rugy, Aymar +2 more
openaire +3 more sources
eLife, 2018 In order to produce movements, muscles must act through joints. The translation from muscle force to limb movement is mediated by internal joint structures that permit movement in some directions but constrain it in others.
Cristiano Alessandro +3 more
doaj +1 more source