Does Exercise Alter Dietary Protein Requirements?

2015 ◽  
pp. 15-37 ◽  
Author(s):  
Peter W. R. Lemon
Keyword(s):  
Dietary Protein ◽  
Protein Requirements

Reevaluation of the Dietary Protein Requirements and Optimum Dietary Protein to Energy Ratios in Japanese Eel, Anguilla japonica

2007 ◽  
Vol 38 (3) ◽  
pp. 418-426 ◽  
Author(s):  
Okorie E. Okorie ◽  
Young-Chul Kim ◽  
Seunghyung Lee ◽  
Jun-Young Bae ◽  
Jin H. Yoo ◽  
...  
Keyword(s):  
Dietary Protein ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
Protein Requirements ◽  
Energy Ratios

scholarly journals Indicator amino acid oxidation protein requirement estimate in endurance-trained men 24 h postexercise exceeds both the EAR and current athlete guidelines

2019 ◽  
Vol 316 (5) ◽  
pp. E741-E748 ◽  
Author(s):  
Arash Bandegan ◽  
Glenda Courtney-Martin ◽  
Mahroukh Rafii ◽  
Paul B. Pencharz ◽  
Peter W. R. Lemon
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Protein Pattern ◽  
Training Session ◽  
Acid Mixture ◽  
Acid Oxidation ◽  
Institute Of Medicine ◽  
Protein Requirement ◽  
Amino Acid Oxidation ◽  
Protein Requirements

Despite studies indicating increased protein requirements in strength-trained or endurance-trained (ET) individuals, the Institute of Medicine has concluded that “no additional dietary protein is suggested for healthy adults undertaking resistance or endurance exercise,” and the controversy regarding exercise effects on protein requirements continues. The objective of this study was to determine the dietary protein requirement of healthy young ET men (≥1 yr training experience) 24 h post exercise (to minimize any acute effects of the previous training session) by measuring the oxidation of ingested l-[1-13C]phenylalanine to 13CO2 in response to graded intakes of protein (indicator amino acid oxidation technique). Eight men [maximal oxygen consumption 64.1 ml·kg−1·min−1 (SD 3.7)] were each studied 24 h postexercise repeatedly with protein intakes ranging from 0.3 to 3.5 g·kg−1·day−1. Protein was fed as an amino acid mixture based on the protein pattern in egg, except for phenylalanine and tyrosine, which were maintained at constant amounts across all protein intakes. For 2 days before the study day, all participants consumed 1.6 g protein·kg−1·day−1. The estimated average requirement (EAR) for protein was determined by applying a nonlinear mixed-effects change-point regression analysis to F13CO2 (label tracer oxidation in 13CO2 breath), which identified a breakpoint in the F13CO2 in response to the graded amounts of protein. The EAR for protein and the upper 95% confidence interval were 2.1 and 2.6 g·kg−1·day−1, respectively. These data suggest that the protein EAR for ET men 24 h postexercise exceeds the Institute of Medicine EAR and established athlete guidelines by ~3.5- and 1.3-fold, respectively.

The dietary protein requirements of Cichlasoma synspilum Hubbs, 1935 (Pisces: Cichlidae) fry

1996 ◽  
Vol 27 (3) ◽  
pp. 167-166 ◽  
Author(s):  
M A Olvera-Novoa ◽  
E Gasca-Leyva ◽  
C A Martinez-Palacios
Keyword(s):  
Dietary Protein ◽  
Protein Requirements

Nutrient reserves of breeding Ring-necked Ducks (Aythya collaris)

1990 ◽  
Vol 68 (12) ◽  
pp. 2524-2530 ◽  
Author(s):  
Ray T. Alisauskas ◽  
Robert T. Eberhardt ◽  
C. Davison Ankney
Keyword(s):  
Dietary Protein ◽  
Lipid Production ◽  
Carcass Composition ◽  
Follicle Growth ◽  
Body Lipid ◽  
Body Protein ◽  
Protein Requirements ◽  
Daily Rate ◽  
Lipid Stores ◽  
Nutrient Reserves

We studied carcass composition of Ring-necked Ducks, Aythya collaris, collected on breeding areas in Beltrami County, Minnesota. Females collected before they had commenced rapid growth of ovarian follicles apparently stored body lipid and body protein. For every gram of egg lipid produced, somatic lipid stores declined by 0.48 g at all stages of rapid follicle growth, irrespective of the daily rate of egg lipid production. A decline in body protein coincided with increased daily requirements for clutch proteins. However, females increased their protein reserves from mid to late rapid follicle growth, resulting in no difference between reserves of females starting and terminating rapid follicle growth. We suggest that observed patterns of lipid storage by Ring-necked Ducks, and possibly by other species of temperate-nesting ducks, have evolved to allow supply of clutch lipids at a rate in line with the ease with which we suspect that breeding hens are able to procure dietary protein; the high daily protein requirements to meet protein demands of clutch formation are possible to meet because ducks typically nest near wetlands in which there is a large seasonal flush of invertebrates.

Effects of Exercise on Dietary Protein Requirements

1998 ◽  
Vol 8 (4) ◽  
pp. 426-447 ◽  
Author(s):  
Peter W.R. Lemon
Keyword(s):  
Energy Balance ◽  
Exercise Training ◽  
Adverse Effects ◽  
Dietary Protein ◽  
Protein Intake ◽  
Nutrient Intake ◽  
Healthy Individuals ◽  
High Protein Intake ◽  
Protein Requirements ◽  
Exercise Type

This paper reviews the factors (exercise intensity, carbohydrate availability, exercise type, energy balance, gender, exercise training, age, and timing of nutrient intake or subsequent exercise sessions) thought to influence protein need. Although there remains some debate, recent evidence suggests that dietary protein need increases with rigorous physical exercise. Those involved in strength training might need to consume as much as 1.6 to 1.7 g protein ⋅ kg−1 day−1 (approximately twice the current RDA) while those undergoing endurance training might need about 1.2 to 1.4 g ⋅ kg−1 day−1 (approximately 1.5 times the current RDA). Future longitudinal studies are needed to confirm these recommendations and assess whether these protein intakes can enhance exercise performance. Despite the frequently expressed concern about adverse effects of high protein intake, there is no evidence that protein intakes in the range suggested will have adverse effects in healthy individuals.

Dietary protein requirements of Atlantic salmon during smoltification

Aquaculture ◽  
1994 ◽  
Vol 121 (1-3) ◽  
pp. 298-299 ◽  
Author(s):  
A.J. Wiggs ◽  
E.B. Henderson ◽  
D.H. Wiggs
Keyword(s):  
Atlantic Salmon ◽  
Dietary Protein ◽  
Protein Requirements
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