scholarly journals Limits to sustained energy intake XII: is the poor relation between resting metabolic rate and reproductive performance because resting metabolism is not a repeatable trait?

2009 ◽  
Vol 213 (2) ◽  
pp. 278-287 ◽  
Author(s):  
L. C. Duarte ◽  
L. M. Vaanholt ◽  
R. E. Sinclair ◽  
Y. Gamo ◽  
J. R. Speakman
Keyword(s):  
Metabolic Rate ◽  
Energy Intake ◽  
Reproductive Performance ◽  
Resting Metabolic Rate ◽  
The Poor ◽  
Resting Metabolism ◽  
Poor Relation

Resting Metabolic Rate and Thermic Effect of a Meal in Low- and Adequate-Energy Intake Male Endurance Athletes

1993 ◽  
Vol 3 (2) ◽  
pp. 194-206 ◽  
Author(s):  
Janice Thompson ◽  
Melinda M. Manore ◽  
James S. Skinner
Keyword(s):  
Metabolic Rate ◽  
Energy Intake ◽  
Weight Maintenance ◽  
Resting Metabolic Rate ◽  
Activity Level ◽  
Low Energy ◽  
Fat Free Mass ◽  
Endurance Athletes ◽  
Male Athletes ◽  
Thermic Effect

The resting metabolic rate (RMR) and thermic effect of a meal (TEM) were determined in 13 low-energy intake (LOW) and 11 adequate-energy intake (ADQ) male endurance athletes. The LOW athletes reported eating 1,490 kcal·day-1less than the ADQ group, while the activity level of both groups was similar. Despite these differences, both groups had a similar fat-free mass (FFM) and had been weight stable for at least 2 years. The RMR was significantly lower (p<0.05) in the LOW group compared to the values of the ADQ group (1.19 vs. 1.29 kcal·FFM-1·hr-l, respectively); this difference represents a lower resting expenditure of 158 kcal·day-1. No differences were found in TEM between the two groups. These results suggest that a lower RMR is one mechanism that contributes to weight maintenance in a group of low- versus adequate-energy intake male athletes.

scholarly journals Resting metabolic rate is associated with hunger, self-determined meal size, and daily energy intake and may represent a marker for appetite

2012 ◽  
Vol 97 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Phillipa Caudwell ◽  
Graham Finlayson ◽  
Catherine Gibbons ◽  
Mark Hopkins ◽  
Neil King ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Energy Intake ◽  
Resting Metabolic Rate ◽  
Meal Size ◽  
Daily Energy Intake ◽  
Daily Energy

EFFECT OF ENERGY INTAKE FREQUENCY ON PREPRANDIAL RESTING METABOLIC RATE IN WOMEN

2003 ◽  
Vol 35 (Supplement 1) ◽  
pp. S395
Author(s):  
R P. Mikat ◽  
K J. Brasel ◽  
L M. Brown ◽  
S Nimphius ◽  
M K. Weis
Keyword(s):  
Metabolic Rate ◽  
Energy Intake ◽  
Resting Metabolic Rate

scholarly journals Metabolic reduction after long-duration flight is not related to fat-free mass loss or flight duration in a migratory passerine

2020 ◽  
Vol 223 (19) ◽  
pp. jeb215384
Author(s):  
Alexander R. Gerson ◽  
Joely G. DeSimone ◽  
Elizabeth C. Black ◽  
Morag F. Dick ◽  
Derrick J. Groom
Keyword(s):  
Metabolic Rate ◽  
Mass Loss ◽  
Body Mass ◽  
Lean Mass ◽  
Migratory Birds ◽  
Resting Metabolic Rate ◽  
Fat Free Mass ◽  
Flight Duration ◽  
Long Duration ◽  
Resting Metabolism

ABSTRACTMigratory birds catabolize large quantities of protein during long flights, resulting in dramatic reductions in organ and muscle mass. One of the many hypotheses to explain this phenomenon is that decrease in lean mass is associated with reduced resting metabolism, saving energy after flight during refueling. However, the relationship between lean body mass and resting metabolic rate remains unclear. Furthermore, the coupling of lean mass with resting metabolic rate and with peak metabolic rate before and after long-duration flight have not previously been explored. We flew migratory yellow-rumped warblers (Setophaga coronata) in a wind tunnel under one of two humidity regimes to manipulate the rate of lean mass loss in flight, decoupling flight duration from total lean mass loss. Before and after long-duration flights, we measured resting and peak metabolism, and also measured fat mass and lean body mass using quantitative magnetic resonance. Flight duration ranged from 28 min to 600 min, and birds flying under dehydrating conditions lost more fat-free mass than those flying under humid conditions. After flight, there was a 14% reduction in resting metabolism but no change in peak metabolism. Interestingly, the reduction in resting metabolism was unrelated to flight duration or to change in fat-free body mass, indicating that protein metabolism in flight is unlikely to have evolved as an energy-saving measure to aid stopover refueling, but metabolic reduction itself is likely to be beneficial to migratory birds arriving in novel habitats.

Resting Metabolic Rate and Energy Intake in Female Gymnasts, Figure-Skaters and Soccer Players

1995 ◽  
Vol 16 (08) ◽  
pp. 551-556 ◽  
Author(s):  
C. Fogelholm ◽  
T. Kukkonen-Harjula ◽  
S. Taipale ◽  
H. Sievänen ◽  
P. Oja ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Energy Intake ◽  
Resting Metabolic Rate ◽  
Soccer Players ◽  
Figure Skaters ◽  
Female Gymnasts

scholarly journals Costly steroids: egg testosterone modulates nestling metabolic rate in the zebra finch

2007 ◽  
Vol 3 (4) ◽  
pp. 408-410 ◽  
Author(s):  
Michael Tobler ◽  
Jan-Åke Nilsson ◽  
Johan F Nilsson
Keyword(s):  
Metabolic Rate ◽  
Competitive Ability ◽  
Resting Metabolic Rate ◽  
Taeniopygia Guttata ◽  
Energetic Costs ◽  
Offspring Performance ◽  
Nestling Growth ◽  
Prenatal Testosterone ◽  
Yolk Hormones ◽  
Resting Metabolism

The transfer of non-genetic resources from mother to the offspring often has considerable consequences for offspring performance. In birds, maternally derived hormones are known to influence a variety of morphological, physiological and behavioural traits in the chick. So far, the range of these hormonal effects involves benefits in terms of enhanced growth and competitive ability as well as costs in terms of immunosuppression. However, since yolk hormones can enhance growth and begging activity, high levels of these hormones may also involve energetic costs. Here, we show experimentally that elevated levels of prenatal testosterone increase resting metabolic rate in nestling zebra finches ( Taeniopygia guttata ). Surprisingly, however, elevation of prenatal testosterone did not result in higher growth rates and, thus, differences in resting metabolism do not seem to be linked to nestling growth. We conclude that apart from immunosuppressive effects, high levels of egg steroids may also entail costs in terms of increased energy expenditure.

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