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Keywords: Cost of transport
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Journal Articles
J Exp Biol (2021) 224 (13): jeb234567.
Published: 05 July 2021
...Elaine E. Kozma; Herman Pontzer ABSTRACT Previous studies in primates and other animals have shown that mass-specific cost of transport (J kg −1 m −1 ) for climbing is independent of body size across species, but little is known about within-species allometry of climbing costs or the effects...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (4): jeb236216.
Published: 16 February 2021
... are able to survive at low energy costs; therefore, they may have adopted a corresponding strategy of slow swimming. Summary: The slow swim speed of sea turtles is regulated by their morphological and physiological features Optimal swim speed Cost of transport Metabolic rate Drag...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (13): jeb203877.
Published: 10 July 2019
... (work output) or a brake (work absorption), or can simply exert force; these functions and their costs are relevant to locomotion. This versatility is revealed by a varying stimulation pattern. Energy Heat Cost of transport Performance Rabbit Locomotion claims a substantial proportion...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (9): jeb195172.
Published: 30 April 2019
... of this hypothesis, we examined whether conservation of stance-phase joint mechanics is prioritized over COM mechanics in a locomotor task where simultaneous conservation of COM and joint mechanics is not feasible: imposed leg-length asymmetry. Positive joint mechanical cost of transport (work per distance traveled...
Journal Articles
J Exp Biol (2019) 222 (9): jeb185447.
Published: 30 April 2019
...Koren Gast; Rodger Kram; Raziel Riemer ABSTRACT Humans have evolved the ability to walk very efficiently. Further, humans prefer to walk at speeds that approximately minimize their metabolic energy expenditure per unit distance (i.e. gross cost of transport, COT). This has been found in a variety...
Journal Articles
J Exp Biol (2019) 222 (4): jeb185603.
Published: 18 February 2019
... (maximum depth, 108 m). Modal swim speeds (0.80–1.35 m s −1 ) were slower than the estimated speeds that minimize cost of transport (1.3–1.9 m s −1 ), a pattern analogous to a ‘sit-and-wait’ strategy for a perpetually swimming species. All but one shark employed unpowered gliding during descents, rendering...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (15): jeb182303.
Published: 01 August 2018
... running. Cost of transport Acceleration Deceleration Unsteady Running Unsteady locomotion in terms of both non-linear trajectory and speed changes is a common observation in the everyday life of humans and animals, as well as in sport activities of bipeds and quadrupeds. The scientific...
Journal Articles
J Exp Biol (2018) 221 (12): jeb175372.
Published: 19 June 2018
... and grizzly bears ( Ursus arctos ) trained to rest and walk on a treadmill. At routine walking speeds, we found polar bears and grizzly bears exhibited similar costs of locomotion and gait kinematics, but differing measures of overall dynamic body acceleration. Minimum cost of transport while walking...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (1): jeb149583.
Published: 11 January 2018
... The authors declare no competing or financial interests. © 2018. Published by The Company of Biologists Ltd 2018 Summary: This Review discusses the solutions that developing larval fish have evolved to the challenges of swimming in the intermediate Reynolds number regime. Cost of transport...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (1): jeb168575.
Published: 11 January 2018
...Brad J. Gemmell; Sean P. Colin; John H. Costello ABSTRACT Recently, it has been shown that some medusae are capable of swimming very efficiently, i.e. with a low cost of transport, and that this is in part due to passive energy recapture (PER) which occurs during bell relaxation. We compared...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (18): 3204–3208.
Published: 15 September 2017
... to travel a unit distance, or cost of transport (COT), has a U -shaped relationship to speed. The relationship between propulsive kinematics and speed, summarized by the Strouhal number ( St = fA / U , where f is tail beat frequency, A is tail tip amplitude in m and U is swimming speed in m s −1 ), allows...
Journal Articles
J Exp Biol (2017) 220 (14): 2521–2528.
Published: 15 July 2017
.../ Summary: Male house mice that control exclusive polygynous territories are less economical runners compared with non-territory-holding males. Male–male aggression Cost of transport Functional trade-offs Sexual selection Whole-organism performance * Author for correspondence ( j.s.morris...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (21): 3420–3427.
Published: 01 November 2016
... that forced them to crouch at nearly 25% lower hip height than in an unconstrained condition, whereas degus would not perform on the treadmill past a ∼9% reduction in hip height. Both ferrets and degus exhibited significantly higher metabolic rates and cost of transport (CoT) values when moving in the tunnel...
Journal Articles
J Exp Biol (2016) 219 (16): 2534–2544.
Published: 15 August 2016
... not differ among successful and unsuccessful individuals, although successful sturgeon exhibited higher costs of transport (42.75 versus 25.85 J kg −1 m −1 ). Energy expenditure metrics were not predictive of successful fishway passage, leading us to conclude that other endogenous or exogenous factors...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (11): 1625–1631.
Published: 01 June 2016
... of ecological function. Metabolic scope Locomotor performance Calcium cycling Muscle Cost of transport Locomotor performance is an essential component in the ecology of animals, because it can influence dispersal, foraging and predation, and behavioural interactions ( Hillman et al., 2014...
Journal Articles
J Exp Biol (2014) 217 (23): 4229–4236.
Published: 01 December 2014
... and energy balance. These costs have never been measured in free-swimming cetaceans. To examine the effect of drag from a tag on metabolic rate, cost of transport and swimming behavior, four captive male dolphins ( Tursiops truncatus ) were trained to swim a set course, either non-tagged ( n =7) or fitted...
Journal Articles
J Exp Biol (2013) 216 (4): 578–586.
Published: 15 February 2013
... measured metabolic rates of weasels during voluntary locomotion to determine whether energy costs of transport are also high in these unusually shaped mammals. In addition, we measured the lower and upper limits of aerobic metabolism [resting metabolic rate (RMR) and maximal oxygen consumption in forced...
Journal Articles
J Exp Biol (2012) 215 (22): 3944–3954.
Published: 15 November 2012
... was significantly slower than the 3.66±0.19 FL s −1 U crit of sham SN-disrupted fish. The oxygen consumption rate (mg O 2 kg −1 min −1 ) of the unilaterally SN-disrupted fish in a speed range of 1.0–2.2 FL s −1 was significantly greater than that of the sham SN-disrupted fish. The least gross cost of transport...
Journal Articles
J Exp Biol (2012) 215 (20): 3665–3671.
Published: 15 October 2012
... cross-sectional area. * Author for correspondence ( jussi.t.peltonen@jyu.fi ) 7 12 2011 26 7 2012 © 2012. 2012 running cost of transport overuse ultrasonography foot strike pattern The Achilles tendon (AT) is one of the most ruptured and surgically treated...
Journal Articles
J Exp Biol (2012) 215 (9): 1509–1514.
Published: 01 May 2012
.... In animals ranging in size from 0.8 g (roach) to 260 kg (zebu steer), the minimum cost of transport (COT min ) decreases with increasing body size roughly as COT min ∝body mass ( M b ) –0.316±0.023 (95% CI). Typically, the variation of COT min with body mass is weaker at the intraspecific level as a result...