Results 251 to 260 of about 726,001 (302)
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Metabolic Energy Cost of Unrestrained Walking
Physical Therapy, 1976Physiologic factors of metabolic energy cost as well as selected mechanical characteristics of gait are described in a group of 40 presumably normal men and women between the ages of 20 and 60 years. Special emphasis was placed on unrestrained (free cadence) walking to provide a reliable baseline for comparison to persons with physical gait impairments.
R L, Blessey +3 more
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The metabolic cost of neural information
Nature Neuroscience, 1998We derive experimentally based estimates of the energy used by neural mechanisms to code known quantities of information. Biophysical measurements from cells in the blowfly retina yield estimates of the ATP required to generate graded (analog) electrical signals that transmit known amounts of information.
S B, Laughlin +2 more
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The Metabolic Cost of Force Generation
Medicine & Science in Sports & Exercise, 2003The purpose of this study was to provide support, based on a review of existing data, for a general relationship between metabolic cost and force generated. There are confounding factors that can affect metabolic cost, including muscle contraction type (isometric, eccentric, or concentric), length, and speed as well as fiber type (e.g., fast or slow ...
Bryant L, Sih, James H, Stuhmiller
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Lowering locomotion's metabolic cost
Science, 2019Robotics Walking and running require different gaits, with each type of motion putting a greater bias on different muscles and joints. Kim et al. developed a soft, fully portable, lightweight exosuit that is able to reduce the metabolic rate for both running and walking by assisting each motion via the hip extension (see the Perspective by Pons).
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The metabolic cost of various occupational exposures
Ergonomics, 1987This paper reports on the oxygen uptake in seated volunteers subjected to 5 Hz sinusoidal vibration at 2ms−2, axial rotation alone and axial rotation in combination with vibration. Compared to non-vibrated, non-twisted tests, the axial rotation and vibration exposure increased the oxygen uptake by 32%.
M, Magnusson +4 more
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Metabolic cost of head-stand posture
Journal of Applied Physiology, 1962Metabolic cost to the human body of various postures has been assessed by many workers. The cost with the body in the topsy-turvy posture, or while “standing on the head,” has not been reported so far. Energy expenditure was calculated indirectly by estimating the amount of oxygen consumed while in a particular posture.
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Metabolic cost of grade running in dogs
Journal of Applied Physiology, 1976Dogs (Canis familiaris) were run up and down 7.4, 11.8, and 20.4% gradesas well as on the horizontal at speeds of 3 and 6 km/h while their steady-state oxygen comsumption was measured. On positive grades the metabolism wasdirectly dependent on both grade and speed.
J L, Raab, P, Eng, R A, Waschler
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Metabolic Energy Cost of Action Potential Velocity
Journal of Neurophysiology, 2006The action potential of the unmyelinated nerve is metabolically expensive. Using the energetic cost per unit length for the biophysically modeled action potential of the squid giant axon, we analyze this cost and identify one possible optimization. The energetic cost arising from an action potential is divided into three separate components: 1) the ...
Patrick, Crotty +2 more
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The Metabolic Cost of Swimming in Ducks
Journal of Experimental Biology, 1970ABSTRACT The metabolic cost of swimming was studied in mallard ducks (Anas platy-rhynchos) which had been trained to swim steadily in a variable-speed water channel. At speeds of from 0·35 to 0·50 m/sec the oxygen consumption remained relatively constant at approximately 2·2 times the resting level. At speeds of 0·55 m/sec and higher the
H D, Prange, K, Schmidt-Nielsen
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The Metabolic Cost of Two Kayaking Techniques
International Journal of Sports Medicine, 1995A common technique employed in flatwater kayak and canoe races is "wash riding", in which a paddler positions his/her boat on the wake of a leading boat and, at a strategic moment, drops off the wake to sprint ahead. It was hypothesized that this manoeuver was energy efficient, analogous to drafting in cycling.
G L, Gray, G O, Matheson, D C, McKenzie
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