1-16 of 16
Keywords: Inverse dynamics
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Journal Articles
J Exp Biol (2021) 224 (18): jeb239889.
Published: 22 September 2021
... interests. 14 4 2021 10 8 2021 © 2021. Published by The Company of Biologists Ltd 2021 Editor's Choice: Soft tissue deformations dissipate substantial energy during human walking, as predicted by a simple dynamic walking model. Inverse dynamics Dissipation Heel strike...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (10): jeb198325.
Published: 23 May 2019
... joints were estimated throughout stance via inverse dynamics. Hindlimb stiffness was estimated from plots of total leg force versus total leg length, and individual joint stiffness was estimated from plots of joint moment versus joint angle. Our results support the hypothesis that goats modulate hindlimb...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (22): jeb182113.
Published: 16 November 2018
... and limb levels during walking. We also posit that rehabilitative approaches to improve locomotor patterns should consider more direct means to elicit favorable changes in ankle power output. Thus, here we used real-time inverse dynamics in a visual biofeedback paradigm to test young adults' ability...
Journal Articles
J Exp Biol (2018) 221 (22): jeb186700.
Published: 12 November 2018
... a range of heights. We hypothesized that increases in net work would be equally divided across hind limb joints with increases in jump height. To test this hypothesis, we used an inverse dynamics analysis to quantify the mechanical output from the hind limb joints of kangaroo rats jumping vertically over...
Journal Articles
J Exp Biol (2017) 220 (9): 1729–1736.
Published: 1 May 2017
... numerical fluid flow simulations and inverse dynamics modeling. Across a threefold increase in load, total work and power significantly increased from 0.38±0.09 to 0.67±0.13 J kg –1 , and 0.47±0.06 to 1.14±0.16 W kg –1 , respectively. Shoulder and elbow equally supplied >97% of the upper limb total work...
Journal Articles
J Exp Biol (2017) 220 (7): 1322–1329.
Published: 1 April 2017
... medial ground reaction forces (lateral pushing from the animal) than would be expected for an upright mammal, suggesting frontal plane movement may be an important aspect of their locomotion. To examine this, we conducted an inverse dynamics analysis in the sagittal and frontal planes, using ground...
Journal Articles
J Exp Biol (2016) 219 (7): 1041–1049.
Published: 1 April 2016
... and comparing them between insect groups could yield insights into evolutionary patterns and functional constraints. Here, we developed a mathematical inverse dynamic model including distinct muscles for an insect head–mandible–muscle complex based on micro-computed tomography (µCT) data and bite force...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (6): 876–886.
Published: 15 March 2015
...Karl E. Zelik; Kota Z. Takahashi; Gregory S. Sawicki ABSTRACT Measuring biomechanical work performed by humans and other animals is critical for understanding muscle–tendon function, joint-specific contributions and energy-saving mechanisms during locomotion. Inverse dynamics is often employed...
Journal Articles
J Exp Biol (2013) 216 (20): 3906–3916.
Published: 15 October 2013
... kinematic data derived from X-ray motion analysis with single limb force plate measurements during locomotion of the common quail. This permits us to evaluate both the virtual leg function during stance (CoP–CoM) and joint mechanics using inverse dynamics analysis and joint kinematics. Our second main...
Journal Articles
J Exp Biol (2013) 216 (12): 2201–2212.
Published: 15 June 2013
... were estimated at the goats' hip, knee, ankle and metatarsophalangeal joints throughout the stance phase via inverse dynamics calculations. Differences in locomotor speed on the level, inclined and declined surfaces were characterized and accounted for by fitting regression equations to the joint...
Journal Articles
J Exp Biol (2009) 212 (1): 21–31.
Published: 1 January 2009
... that the Achilles' tendon performs at least 44–59% of the total ankle muscle–tendon work. * Author for correspondence (e-mail: gsawicki@brown.edu ) 24 10 2008 2009 locomotion walking step length metabolic cost exoskeleton ankle human inverse dynamics joint power efficiency...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2008) 211 (9): 1402–1413.
Published: 1 May 2008
... Limited 2008 2008 locomotion walking metabolic cost exoskeletons ankle human efficiency inverse dynamics joint power Humans are adept at harnessing the passive dynamics of their lower limbs to save energy during each walking step( Alexander, 1991 ; Cavagna et al., 2002 ; Kuo et al...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2007) 210 (4): 655–667.
Published: 15 February 2007
..., by using a combination of high speed imaging,kinematic and inverse dynamics analyses and electromyographic recordings from the tongue projector muscle. All three taxa require high-power output of the paired tongue projector muscles to produce the observed kinematics. Required power output peaks...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2007) 210 (3): 383–394.
Published: 1 February 2007
... inverse dynamics. We did not include internal moments (segment inertial and gravitational terms) because we were concerned with relating joint dynamics to body COM mechanics rather than obtaining accurate values of total muscle work. The external moment is the magnitude of the cross product between...
Journal Articles
J Exp Biol (2005) 208 (1): 41–53.
Published: 1 January 2005
...C. P. McGowan; R. V. Baudinette; A. A. Biewener SUMMARY Measurements of joint work and power were determined using inverse dynamics analysis based on ground reaction force and high-speed video recordings of tammar wallabies as they decelerated and accelerated while hopping over a force platform...
Journal Articles
J Exp Biol (2002) 205 (9): 1339–1353.
Published: 1 May 2002
... during stance phase in the four kinematically relevant joints of the forelimbs (scapular pivot,shoulder joint, elbow joint, wrist joint) and the hindlimbs (hip joint, knee joint, ankle joint, intratarsal joint) were determined by inverse dynamic analysis. Kinematics were measured by cineradiography (150...