Daily energy expenditure and the cost of activity in a free-living mammal

Oecologia ◽  
1981 ◽  
Vol 51 (2) ◽  
pp. 253-259 ◽  
Author(s):  
William H. Karasov
Keyword(s):  
Energy Expenditure ◽  
Daily Energy Expenditure ◽  
Free Living ◽  
Daily Energy ◽  
The Cost

Components and variations in daily energy expenditure of athletic and non-athletic adolescents in free-living conditions

2000 ◽  
Vol 84 (4) ◽  
pp. 531-539 ◽  
Author(s):  
Jérôme Ribeyre ◽  
Nicole Fellmann ◽  
Jean Vernet ◽  
Michel Delaître ◽  
Alain Chamoux ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Direct Method ◽  
Exercise Duration ◽  
Living Conditions ◽  
Fat Free Mass ◽  
Whole Body ◽  
Daily Energy Expenditure ◽  
Free Living ◽  
Daily Energy ◽  
Free Living Conditions

The objectives of the study were to determine: (1) daily energy expenditure (EE) of athletic and non-athletic adolescents of both sexes in free-living conditions; (2) day-to-day variations in daily EE during 1 week; (3) energy costs of the main activities; and (4) the effect of usual activity on EE during sleep, seated and miscellaneous activities. Fifty adolescents (four groups of eleven to fifteen boys or girls aged 16–19 years) participated in the study. Body composition was measured by the skinfold-thickness method, and VO2max and external mechanical power (EMP) by a direct method (respiratory gas exchanges) on a cycloergometer. Daily EE and partial EE in free-living conditions were computed from heart-rate (HR) recordings during seven consecutive days using individual prediction equations established from the data obtained during a 24 h period spent in whole-body calorimeters with similar activities. Fat-free mass (FFM), VO2max, EMP, daily EE and EE during sleep were significantly higher in athletic than in non-athletic subjects. After adjustment for FFM, VO2max, EMP, daily EE and EE during exercise were still higher in athletic than in non-athletic adolescents (P<0·001). However, adjusted sleeping EE was not significantly different between athletic and non-athletic adolescents. Increases in exercise EE were partly compensated for by significant reductions in EE during schoolwork and miscellaneous activities. Thus, the differences in daily EE between athletic and non-athletic subjects resulted mainly from increases in FFM and EE during exercise (duration and energy cost).

scholarly journals Daily energy expenditure during lactation is strongly selected in a free‐living mammal

2014 ◽  
Vol 29 (2) ◽  
pp. 195-208 ◽  
Author(s):  
Quinn E. Fletcher ◽  
John R. Speakman ◽  
Stan Boutin ◽  
Jeffrey E. Lane ◽  
Andrew G. McAdam ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Daily Energy Expenditure ◽  
Free Living ◽  
Daily Energy

Daily Energy Expenditure and Water Flux of Free-Living Blanford's Foxes (Vulpes cana), a small Desert Carnivore

10.2307/5616 ◽  
1992 ◽  
Vol 61 (3) ◽  
pp. 611 ◽  
Author(s):  
Eli Geffen ◽  
A. Allan Degen ◽  
Michael Kam ◽  
Reuven Hefner ◽  
Kenneth A. Nagy
Keyword(s):  
Energy Expenditure ◽  
Water Flux ◽  
Daily Energy Expenditure ◽  
Free Living ◽  
Daily Energy

Cost of locomotion and daily energy expenditure by free-living swift foxes (Vulpes velox): a seasonal comparison

1996 ◽  
Vol 74 (2) ◽  
pp. 283-290 ◽  
Author(s):  
Darrel F. Covell ◽  
David S. Miller ◽  
William H. Karasov
Keyword(s):  
Energy Expenditure ◽  
Allometric Equation ◽  
Activity Period ◽  
Daily Energy Expenditure ◽  
Free Living ◽  
Average Mass ◽  
Daily Movement ◽  
Vulpes Velox ◽  
Daily Energy ◽  
Movement Distance

We studied the daily energy expenditure of free-living nonreproductive carnivorous swift foxes (Vulpes velox, average mass 2.1 kg) on shortgrass prairie in southeastern Colorado in summer and winter in relation to air temperature, daily activity pattern, movement rate, and daily movement distance. The field metabolic rate (FMR) was measured with doubly labeled water, and activity and movements were monitored by radiotelemetry. During their nighttime activity period in winter, swift foxes traveled large distances (18.5 ± 0.6 km/d). Locomotion costs (estimated from daily movement distance in winter, using an allometric equation) accounted for at least 21% of total daily expenditure, the highest proportion reported for a mammal. During their nocturnal activity periods (winter vs. summer), swift foxes apparently traveled farther (ca. 13.0 vs. 5.7 km/night, using equal sampling intervals) and were active longer (ca. 12.9 vs. 11.3 h/night) in colder air. Nevertheless, FMR in winter (1488 kJ/d) was significantly lower than during summer (2079 kJ/d). We review available data for other free-living eutherians and show that low temperatures in winter are not necessarily associated with increases in FMR.

scholarly journals Evaluation of a portable device to measure daily energy expenditure in free-living adults

2007 ◽  
Vol 85 (3) ◽  
pp. 742-749 ◽  
Author(s):  
Maxime St-Onge ◽  
Diane Mignault ◽  
David B Allison ◽  
Rémi Rabasa-Lhoret
Keyword(s):  
Energy Expenditure ◽  
Portable Device ◽  
Daily Energy Expenditure ◽  
Free Living ◽  
Daily Energy

Free-living Daily Energy Expenditure in Patients with Parkinson's Disease

Neurology ◽  
1997 ◽  
Vol 48 (1) ◽  
pp. 88-91 ◽  
Author(s):  
M. J. Toth ◽  
P. S. Fishman ◽  
E. T. Poehlman
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Energy Expenditure ◽  
Daily Energy Expenditure ◽  
Free Living ◽  
Daily Energy
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