Allometric scaling of maximal metabolic rate in mammals: muscle aerobic capacity as determinant factor

2004 ◽  
Vol 140 (2) ◽  
pp. 115-132 ◽  
Author(s):  
Ewald R. Weibel ◽  
Leonardo D. Bacigalupe ◽  
Beat Schmitt ◽  
Hans Hoppeler
Keyword(s):  
Metabolic Rate ◽  
Aerobic Capacity ◽  
Allometric Scaling ◽  
Maximal Metabolic Rate ◽  
Determinant Factor

Mass‐independent maximal metabolic rate predicts geographic range size of placental mammals

2018 ◽  
Vol 32 (5) ◽  
pp. 1194-1202
Author(s):  
Jack P. Hayes ◽  
Chris R. Feldman ◽  
Miguel B. Araújo
Keyword(s):  
Metabolic Rate ◽  
Geographic Range ◽  
Range Size ◽  
Geographic Range Size ◽  
Maximal Metabolic Rate

scholarly journals Aerobic capacity influences the spatial position of individuals within fish schools

2011 ◽  
Vol 279 (1727) ◽  
pp. 357-364 ◽  
Author(s):  
Shaun S. Killen ◽  
Stefano Marras ◽  
John F. Steffensen ◽  
David J. McKenzie
Keyword(s):  
Metabolic Rate ◽  
Aerobic Capacity ◽  
Leading Edge ◽  
Standard Metabolic Rate ◽  
Fish Schools ◽  
Liza Aurata ◽  
Schooling Behaviour ◽  
In The Wild ◽  
Focal Fish ◽  
Spatial Positioning

The schooling behaviour of fish is of great biological importance, playing a crucial role in the foraging and predator avoidance of numerous species. The extent to which physiological performance traits affect the spatial positioning of individual fish within schools is completely unknown. Schools of juvenile mullet Liza aurata were filmed at three swim speeds in a swim tunnel, with one focal fish from each school then also measured for standard metabolic rate (SMR), maximal metabolic rate (MMR), aerobic scope (AS) and maximum aerobic swim speed. At faster speeds, fish with lower MMR and AS swam near the rear of schools. These trailing fish required fewer tail beats to swim at the same speed as individuals at the front of schools, indicating that posterior positions provide hydrodynamic benefits that reduce swimming costs. Conversely, fish with high aerobic capacity can withstand increased drag at the leading edge of schools, where they could maximize food intake while possibly retaining sufficient AS for other physiological functions. SMR was never related to position, suggesting that high maintenance costs do not necessarily motivate individuals to occupy frontal positions. In the wild, shifting of individuals to optimal spatial positions during changing conditions could influence structure or movement of entire schools.

The Effects of a 20-Week Exercise Training Program on Resting Metabolic Rate in Previously Sedentary, Moderately Obese Women

2001 ◽  
Vol 11 (1) ◽  
pp. 15-31 ◽  
Author(s):  
Heidi K. Byrne ◽  
Jack H. Wilmore
Keyword(s):  
Resistance Training ◽  
Exercise Training ◽  
Metabolic Rate ◽  
Training Program ◽  
Body Fat ◽  
Aerobic Capacity ◽  
Resting Metabolic Rate ◽  
Fat Free Mass ◽  
Obese Women ◽  
Resistance Training Program

The present study was designed to investigate the effects of exercise training on resting metabolic rate (RMR) in moderately obese women. It was hypothesized that exercise training would increase resting metabolic rate. Nineteen previously sedentary, moderately obese women (age = 38.0 ± 0.9 years, percent body fat = 37.5 ± 0.8) trained for 20 weeks using either resistance training (RT) or a combination of resistance training arid walking (RT/W). The high intensity resistance training program was designed to increase strength and fat-free mass and the walking program to increase aerobic capacity. There was also a non-exercising control group (C) of 9 subjects in this study. Fat-free mass was significantly increased in both the RT (+1.90 kg) and RT/W (+1.90 kg) groups as a result of the training program. No group showed significant changes in fat mass or relative body fat from pre- to post-training. Aerobic capacity was slightly, though significantly, increased in the RT/W group only. The RT group showed a significant increase (+44 kcal · day−1), while the RT/W group showed a significant decrease (-53 kcal · day−1) in resting metabolic rate post-training. RT can potentiate an increase in RMR through an increase in fat-free mass, and the decrease in RMR in the RT/W group may have been a result of heat acclimation from the walk training.

Bioenergetics and stellar luminosities

2017 ◽  
Vol 18 (3) ◽  
pp. 211-212
Author(s):  
C Sivaram ◽  
K Arun ◽  
O V Kiren
Keyword(s):  
Metabolic Rate ◽  
Unit Mass ◽  
Infrared Galaxies ◽  
X Ray ◽  
Luminous Infrared Galaxies ◽  
Maximal Metabolic Rate ◽  
Luminous Objects ◽  
The Universe

AbstractWe draw attention to a curious coincidence wherein the most (steadily emitting) luminous objects in the Universe from stellar X-ray sources to ultra-luminous quasars and Ultra Luminous Infrared Galaxies, steadily emit a power per unit mass, which is just the same value as the maximal metabolic rate in (warm-blooded) bio-organisms.

scholarly journals Effect of Constitution on Mass of Individual Organs and Their Association with Metabolic Rate in Humans—A Detailed View on Allometric Scaling

PLoS ONE ◽  
2011 ◽  
Vol 6 (7) ◽  
pp. e22732 ◽  
Author(s):  
Manfred J. Müller ◽  
Dirk Langemann ◽  
Isabel Gehrke ◽  
Wiebke Later ◽  
Martin Heller ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Allometric Scaling
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