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פותח על ידי קלירמאש פתרונות בע"מ -
Running in cheetahs, gazelles, and goats: energy cost and limb configuration
Year:
1974
Source of publication :
American Journal of Physiology
Authors :
בהרב, דן
;
.
Volume :
227
Co-Authors:
Taylor, C.R., Mus. Comp. Zool., Harvard Univ., Cambridge, Mass. 02138, United States
Shkolnik, A., Mus. Comp. Zool., Harvard Univ., Cambridge, Mass. 02138, United States
Dmi'el, R., Mus. Comp. Zool., Harvard Univ., Cambridge, Mass. 02138, United States
Baharav, D.
Borut, A.
Facilitators :
From page:
848
To page:
850
(
Total pages:
3
)
Abstract:
Functional anatomists have argued that an animal can be built to run cheaply by lightening the distal parts of the limbs and/or by concentrating the muscle mass of the limbs around their pivot points. These arguments assume that much of the energy expended as animals run at a constant speed goes into alternately accelerating and decelerating the limbs. Gazelles, goats, and cheetahs offer a nice gradation of limb configurations in animals of similar total mass and limb length and, therefore, provide the opportunity to quantify the effect of limb design on the energy cost of running. It was found that, despite large differences in limb configuration, the energetic cost of running in cheetahs, gazelles, and goats of about the same mass was nearly identical over a wide range of speeds. Also, the observed energetic cost of running was almost the same as that predicted on the basis of body weight for all three species: cheetah, 0.14 ml O 2 (g.km) -1 observed vs. 0.13 ml O 2 (g.km) -1 predicted; gazelle, 0.16 ml O 2 (g.km) -1 observed vs. 0.15 ml O 2 (g.km) -1 predicted; and goat, 0.18 ml O 2 (g.km) -1 observed vs. 0.14 ml O 2 (g.km) -1 predicted. Thus the relationship between body weight and energetic cost of running apparently applies to animals with very different limb configurations and is more general than anticipated. This suggests that most of the energy expended in running at a constant speed is not used to accelerate and decelerate the limbs.
Note:
Related Files :
Animal
Animals
body composition
exercise
Female
Goat
goats
limb
Male
running
עוד תגיות
תוכן קשור
More details
DOI :
83
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32140
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:07
You may also be interested in
Scientific Publication
Running in cheetahs, gazelles, and goats: energy cost and limb configuration
227
Taylor, C.R., Mus. Comp. Zool., Harvard Univ., Cambridge, Mass. 02138, United States
Shkolnik, A., Mus. Comp. Zool., Harvard Univ., Cambridge, Mass. 02138, United States
Dmi'el, R., Mus. Comp. Zool., Harvard Univ., Cambridge, Mass. 02138, United States
Baharav, D.
Borut, A.
Running in cheetahs, gazelles, and goats: energy cost and limb configuration
Functional anatomists have argued that an animal can be built to run cheaply by lightening the distal parts of the limbs and/or by concentrating the muscle mass of the limbs around their pivot points. These arguments assume that much of the energy expended as animals run at a constant speed goes into alternately accelerating and decelerating the limbs. Gazelles, goats, and cheetahs offer a nice gradation of limb configurations in animals of similar total mass and limb length and, therefore, provide the opportunity to quantify the effect of limb design on the energy cost of running. It was found that, despite large differences in limb configuration, the energetic cost of running in cheetahs, gazelles, and goats of about the same mass was nearly identical over a wide range of speeds. Also, the observed energetic cost of running was almost the same as that predicted on the basis of body weight for all three species: cheetah, 0.14 ml O 2 (g.km) -1 observed vs. 0.13 ml O 2 (g.km) -1 predicted; gazelle, 0.16 ml O 2 (g.km) -1 observed vs. 0.15 ml O 2 (g.km) -1 predicted; and goat, 0.18 ml O 2 (g.km) -1 observed vs. 0.14 ml O 2 (g.km) -1 predicted. Thus the relationship between body weight and energetic cost of running apparently applies to animals with very different limb configurations and is more general than anticipated. This suggests that most of the energy expended in running at a constant speed is not used to accelerate and decelerate the limbs.
Scientific Publication
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