scholarly journals Interactive effects of an isocaloric high-protein diet and resistance exercise on body composition, ghrelin, and metabolic and hormonal parameters in untrained young men: A randomized clinical trial

2013 ◽  
Vol 5 (2) ◽  
pp. 242-247 ◽  
Author(s):  
Hyun Ho Kim ◽  
Yun Jin Kim ◽  
Sang Yeoup Lee ◽  
Dong Wook Jeong ◽  
Jeong Gyu Lee ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Body Composition ◽  
Resistance Exercise ◽  
Randomized Clinical Trial ◽  
Young Men ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet ◽  
Interactive Effects

scholarly journals The Effects of a High-Protein Diet on Bone Mineral Density in Exercise-Trained Women: A 1-Year Investigation

2018 ◽  
Vol 3 (4) ◽  
pp. 62
Author(s):  
Jose Antonio ◽  
Anya Ellerbroek ◽  
Cassandra Carson
Keyword(s):  
Bone Mineral Density ◽  
Body Composition ◽  
Bone Mineral ◽  
Mineral Content ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet ◽  
Whole Body ◽  
Mineral Density ◽  
One Year

The effects of long-term high-protein consumption (i.e., >2.2 g/kg/day) are unclear as it relates to bone mineral content. Thus, the primary endpoint of this investigation was to determine if consuming a high-protein diet for one year affected various parameters of body composition in exercise-trained women. This investigation is a follow-up to a prior 6-month study. Subjects were instructed to consume a high-protein diet (>2.2 g/kg/day) for one year. Body composition was assessed via dual-energy X-ray absorptiometry (DXA). Subjects were instructed to keep a food diary (i.e., log their food ~three days per week for a year) via the mobile app MyFitnessPal®. Furthermore, a subset of subjects had their blood analyzed (i.e., basic metabolic panel). Subjects consumed a high-protein diet for one year (mean ± SD: 2.3 ± 1.1 grams per kilogram body weight daily [g/kg/day]). There were no significant changes for any measure of body composition over the course of the year (i.e., body weight, fat mass, lean body mass, percent fat, whole body bone mineral content, whole body T-score, whole body bone mineral density, lumbar bone mineral content, lumbar bone mineral density and lumbar T-score). In addition, we found no adverse effects on kidney function. Based on this 1-year within-subjects investigation, it is evident that a diet high in protein has no adverse effects on bone mineral density or kidney function.

The effect of choice feeding during the rearing period on reproductive function in the gilt

2000 ◽  
Vol 2000 ◽  
pp. 102-102 ◽  
Author(s):  
S. R. L. Lucas ◽  
J. A. Rooke ◽  
V. C. Bland ◽  
A.G. Sinclair ◽  
S. A. Edwards
Keyword(s):  
Body Composition ◽  
Reproductive Function ◽  
High Protein Diet ◽  
Diet Selection ◽  
Growing Pigs ◽  
High Protein ◽  
Protein Source ◽  
Protein Diet ◽  
Choice Feeding ◽  
Growth And Reproduction

Previous studies (e.g. Cia et al. 1998) have shown that modification of body composition of the prepubertal gilt has effects on responsiveness of gilts to exogenous gonadotrophin. Growing pigs are able to select a diet from different foods differing in protein:energy ratio (Dalby 1998); however there is little evidence of what effect the conflicting nutritional demands of growth and reproduction have on diet selection. The objectives of the experiment were to quantify the effects of choice feeding on responsiveness of gilts to exogenous gonadotrophin (Cia et al. 1998) and to investigate the effect of protein source on diet selection as Jones et al.(2000) have observed selection by breeding gilts against a high protein diet containing fishmeal.

scholarly journals An isoenergetic high-protein, moderate-fat diet does not compromise strength and fatigue during resistance exercise in women

2008 ◽  
Vol 100 (2) ◽  
pp. 283-286 ◽  
Author(s):  
Konstantina Dipla ◽  
Maria Makri ◽  
Andreas Zafeiridis ◽  
Dimitrios Soulas ◽  
Sofia Tsalouhidou ◽  
...  
Keyword(s):  
Resistance Exercise ◽  
Lower Limb ◽  
High Intensity ◽  
Handgrip Strength ◽  
Control Diet ◽  
High Protein Diet ◽  
High Protein ◽  
Lower Limbs ◽  
Protein Diet ◽  
Isometric Handgrip

Resistance exercise is recommended to individuals following high-protein diets in order to augment changes in body composition. However, alterations in macronutrient composition may compromise physical performance. The present study investigated the effects of an isoenergetic high-protein diet on upper and lower limb strength and fatigue during high-intensity resistance exercise. Ten recreationally active women, aged 25–40 years, followed a control diet (55, 15 and 30 % of energy from carbohydrate, protein and fat, respectively) and a high-protein diet (respective values, 30, 40 and 30) for 7 d each in a random counterbalanced design. Each participant underwent strength testing of upper limb (isometric handgrip strength and endurance) and lower limb (four sets of sixteen maximal knee flexions and extensions on an isokinetic dynamometer) before and after applying each diet. Body weight, body fat and RER were significantly reduced following the high-protein diet (P < 0·05). No differences were found between diets in any of the strength performance parameters (handgrip strength, handgrip endurance, peak torque, total work and fatigue) or the responses of heart rate, systolic and diastolic arterial pressure, blood lactate and blood glucose to exercise. Women on a short-term isoenergetic high-protein, moderate-fat diet maintained muscular strength and endurance of upper and lower limbs during high-intensity resistance exercise without experiencing fatigue earlier compared with a control diet.

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