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Keywords: mechanical power
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Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2024) 227 (17): jeb247377.
Published: 4 September 2024
... al., 2020 , 2021 ). Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659 SI841/15-1 2 EXC 2075–390740016 SE 2109/2-1 2 HA 5977/5-1 2 Contractile behaviour Muscle damping Mechanical power Sarcomere Signalling Mechanosensing Blebbistatin Cross...
Includes: Supplementary data
Journal Articles
In collection:
Comparative biomechanics of movement
Melody W. Young, Nicholas D. Flaim, Johnathan Yarbro, Ashwin Ragupathi, Navjot Guru, Edwin Dickinson, Michael C. Granatosky
Journal:
Journal of Experimental Biology
J Exp Biol (2023) 226 (7): jeb244833.
Published: 5 April 2023
... climbing was predominantly driven by potential energy, with negligible kinetic contributions). Utilizing power as a means of estimating efficiency, we also demonstrate that Australian green tree frogs show total mechanical power costs only slightly above the minimum mechanical power necessary to climb...
Includes: Supplementary data
Journal Articles
In collection:
Comparative biomechanics of movement
Journal:
Journal of Experimental Biology
J Exp Biol (2018) 221 (24): jeb191171.
Published: 10 December 2018
... by folding their wings over the body to adopt a ballistic posture. Calypte anna Maximal lift Mechanical power Vertical climbing Ascending flight is commonly used by volant taxa in a diversity of biological contexts, including chases, escapes and mating behavior. Climbing animals must exert...
Includes: Supplementary data
Journal Articles
The influence of strain and activation on the locomotor function of rat ankle extensor muscles
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Journal:
Journal of Experimental Biology
J Exp Biol (2010) 213 (2): 318–330.
Published: 15 January 2010
...E. F. Hodson-Tole; J. M. Wakeling SUMMARY The ankle extensor muscles of the rat have different mechanical and physiological properties, providing a means of studying how changes in locomotor demands influence muscle fascicle behaviour, force and mechanical power output in different populations...
Journal Articles
Efficiency of labriform swimming in the bluegill sunfish ( Lepomis macrochirus )
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Journal:
Journal of Experimental Biology
J Exp Biol (2007) 210 (19): 3422–3429.
Published: 1 October 2007
..., constituting half of the total pectoral girdle muscle mass,was measured in vitro and used to estimate the muscle mechanical power output during maximal labriform swimming ( P mech ;0.15–0.21 W kg –1 body mass). Respirometry was used to estimate the total metabolic power input ( P total ; 0.95 W kg –1 body mass...
Journal Articles
Dynamics of pectoral fin rowing in a fish with an extreme rowing stroke:the threespine stickleback ( Gasterosteus aculeatus )
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Journal:
Journal of Experimental Biology
J Exp Biol (2004) 207 (11): 1925–1939.
Published: 1 May 2004
..., A. and Rosén, M. ( 2000 ). Horizontal flight of a swallow ( Hirundo rustica )observed in a wind tunnel, with a new method for directly measuring mechanical power. J. Exp. Biol. 203 , 1755 -1765. Pereira, F. and Gharib, M. ( 2002 ). Defocusing digital particle image velocimetry and the three-dimensional...
Journal Articles
Effects of longitudinal body position and swimming speed on mechanical power of deep red muscle from skipjack tuna ( Katsuwonus pelamis )
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Journal:
Journal of Experimental Biology
J Exp Biol (2002) 205 (2): 189–200.
Published: 15 January 2002
...Douglas A. Syme; Robert E. Shadwick SUMMARY The mechanical power output of deep, red muscle from skipjack tuna ( Katsuwonus pelamis ) was studied to investigate (i) whether this muscle generates maximum power during cruise swimming, (ii) how the differences in strain experienced by red muscle...
Journal Articles
Metabolic power, mechanical power and efficiency during wind tunnel flight by the European starling Sturnus vulgaris
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Journal:
Journal of Experimental Biology
J Exp Biol (2001) 204 (19): 3311–3322.
Published: 1 October 2001
... dioxide production and calculated the mechanical power ( P mech ) from two aerodynamic models using wingbeat kinematics measured by high-speed cinematography. P met increased from 10.4 to 14.9 W as flight speed was increased from 6.3 to 14.4 m s –1 and was compatible with the U -shaped power/speed curve...
Journal Articles
Horizontal Flight of A Swallow ( Hirundo Rustica ) Observed In A Wind Tunnel, With A New Method for Directly Measuring Mechanical Power
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Journal:
Journal of Experimental Biology
J Exp Biol (2000) 203 (11): 1755–1765.
Published: 1 June 2000
... and the rotation of the humerus were estimated and used to analyse the time course of a number of variables, including the work done by the muscles in each wing beat. The average mechanical power turned out to be more than that predicted on the basis of current estimates of body drag coefficient and profile power...
Journal Articles
The Influence of Temperature on Power Production During Swimming: I. In Vivo Length Change and Stimulation Pattern
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Journal:
Journal of Experimental Biology
J Exp Biol (2000) 203 (2): 321–331.
Published: 15 January 2000
.... * Present address: Department of Biology, San Diego State University, San Diego, CA 92182, USA ‡ Author for correspondence (e-mail: [email protected] ) 14 09 1999 22 12 1999 © 2000 by Company of Biologists 2000 muscle function fish swimming scup mechanical power...
Journal Articles
The Influence of Temperature on Power Production During Swimming: II. Mechanics of Red Muscle Fibres In Vivo
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Journal:
Journal of Experimental Biology
J Exp Biol (2000) 203 (2): 333–345.
Published: 15 January 2000
... , A. F. ( 1994 ). Modeling red muscle power output during steady and unsteady swimming in largemouth bass . Am. J. Physiol . 267 , R481 – R488 . Josephson , R. K. ( 1985 ). Mechanical power output from striated muscle during cyclic contraction . J. Exp. Biol . 114 , 493 – 512...
Journal Articles
On the aerodynamics of moult gaps in birds
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Journal:
Journal of Experimental Biology
J Exp Biol (1999) 202 (1): 67–76.
Published: 1 January 1999
... © 1999 by Company of Biologists 1999 avian moult aerodynamics flight mechanical power cost of transport manoeuvrability predation risk Moulting in birds is an energetically costly process (e.g. Payne, 1972 ) because (i) during the moult there is an energy cost of synthesizing...
Journal Articles
Mechanics of Locomotion in Lizards
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Journal:
Journal of Experimental Biology
J Exp Biol (1997) 200 (16): 2177–2188.
Published: 15 August 1997
... (A) and a trot (B) in E. skiltonianus. A single step is shown, beginning when one diagonal limb pair hits the ground and ending when the other diagonal limb pair hits the ground. The data are for the same step as shown in Fig. 3 . biomechanics walking running mechanical work mechanical power...
Journal Articles
in vivo Length Oscillations of Indirect Flight Muscles in The Fruit Fly Drosophila Virilis
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Journal:
Journal of Experimental Biology
J Exp Biol (1996) 199 (12): 2767–2774.
Published: 1 December 1996
... but significant effect on mechanical power output. In the green crab Carcinus maenas , the work output of the scaphognathite muscle drops by approximately 20 % when the mean oscillatory length is changed by ±5 % of the optimal length ( Josephson and Stokes, 1989 ). Although the scaphognathite muscle...
Journal Articles
Efficiency of Energy Conversion During Sinusoidal Movement of Red Muscle Fibres from the Dogfish Scyliorhinus Canicula
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Journal:
Journal of Experimental Biology
J Exp Biol (1993) 185 (1): 195–206.
Published: 1 December 1993
... of twitch fibres ( Kuffler and Vaughan Williams, 1953 ; Lännergren, 1975 ). * Address for correspondence. 13 08 1993 © 1993 by Company of Biologists 1993 muscle fish dogfish efficiency mechanical power heat Scyliorhinus canicula The recognition that animals...
Journal Articles
Efficiency of Energy Conversion During Sinusoidal Movement of White Muscle Fibres from the Dogfish Scyliorhinus Canicula
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Journal:
Journal of Experimental Biology
J Exp Biol (1993) 183 (1): 137–147.
Published: 1 October 1993
... contraction are discussed. * Address for correspondence. 21 6 1993 © 1993 by Company of Biologists 1993 muscle fish dogfish efficiency mechanical power heat Scyliorhinus canicula Efficiency of muscle contraction can be defined as the net work output for each ATP...
Journal Articles
The Cost of Hovering and Forward Flight in a Nectar-Feeding Bat, Glossophaga Soricina , Estimated From Aerodynamic Theory
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Journal:
Journal of Experimental Biology
J Exp Biol (1993) 182 (1): 207–227.
Published: 1 September 1993
... have used to estimate the cost of flight in a neotropical nectar-feeding bat Glossophaga soricina (Phyllostomidae), namely the use of kinematic and morphological data and aerodynamic theory to estimate the mechanical power requirements (power output) for hovering and horizontal forward flight. A hot...
Journal Articles
Biomechanics of Flight in Neotropical Butterflies: Aerodynamics and Mechanical Power Requirements
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Journal:
Journal of Experimental Biology
J Exp Biol (1991) 159 (1): 335–357.
Published: 1 September 1991
... or negative vertical force. Estimated effective angles of incidence (α T of the wings averaged 39° during the downstroke and −22° during the upstroke; spanwise variation in α T was greater than the average difference between half-strokes. Total mechanical power requirements of forward flight averaged 12.5 W...
Journal Articles
Efficiency Of Energy Conversion During Shortening Of Muscle Fibres From The Dogfish Scyliorhinus Canicula
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Journal:
Journal of Experimental Biology
J Exp Biol (1991) 158 (1): 343–353.
Published: 1 July 1991
...N. A. Curtin; R. C. Woledge ABSTRACT Force and heat production were measured during isovelocity shortening of tetanized white myotomal muscle fibres from the dogfish at 12 °C. For each fibre preparation a range of velocities was used. Mechanical power was calculated from force x velocity...
Journal Articles
Effects of operating frequency and temperature on mechanical power output from moth flight muscle
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Journal:
Journal of Experimental Biology
J Exp Biol (1990) 149 (1): 61–78.
Published: 1 March 1990
... increased and then decreased. It was always possible to find a frequency that maximized work output. There also always existed a higher frequency (termed the ‘optimal’ frequency in this paper) that maximized the mechanical power output, which is the product of the cycle frequency (s −1 ) and the work per...
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