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.

Effect of a high protein diet on worm recovery, growth and distribution of Echinostoma caproni in ICR mice

1997 ◽  
Vol 71 (4) ◽  
pp. 351-354 ◽  
Author(s):  
J.E. Sudati ◽  
F. Rivas ◽  
B. Fried
Keyword(s):  
Control Diet ◽  
High Protein Diet ◽  
Dry Weight ◽  
High Protein ◽  
Protein Diet ◽  
Echinostoma Caproni ◽  
Icr Mice ◽  
Parasite Relationship ◽  
Standard Laboratory Diet ◽  
Relationship Of

AbstractThe effects of a high protein diet on the host-parasite relationship of Echinostoma caproni in ICR mice were studied. The customized high protein diet (CHPD) contained 64% casein as a source of protein. The control diet consisted of a standard laboratory diet containing 23% casein as a source of protein. Mice were each fed 25 cysts of E. caproni by stomach tube and necropsied 2, 3, 4 and 5 weeks postinfection. The weight of mice on the CHPD did not differ significantly from mice on the control diet. Worm recoveries were also unaffected by the high protein diet. There was a significant decline in worm dry weight, body area and uterine egg counts in worms from mice on the CHPD compared with those on the control diet. Worms from hosts on the CHPD were located more posteriad in the gut than those recovered from mice on the control diet. Changes in the mouse diet adversely affected E. caproni maturation and growth, possibly by altering the immediate host mucosal environment and making it less conducive to worm development.

Plasma cholecystokinin and pancreatic growth during adaptation to dietary protein

1986 ◽  
Vol 251 (1) ◽  
pp. G70-G74 ◽  
Author(s):  
G. M. Green ◽  
V. H. Levan ◽  
R. A. Liddle
Keyword(s):  
Food Intake ◽  
Control Diet ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet ◽  
Pancreatic Acini ◽  
Pancreatic Growth ◽  
Low Protein ◽  
Plasma Cholecystokinin ◽  
Pancreatic Protease

The relationship among plasma cholecystokinin (CCK), pancreatic growth, and food intake was studied in rats over a 2-wk period of adaptation from a very low-protein to a very high-protein diet. Rats adapted to a control diet (5% casein) were killed at 0900 (without fasting) at 0 h, 12 h, 24 h, 48 h, 7 days, or 14 days after transfer to a high-protein diet (75% casein). CCK was measured by bioassay using isolated pancreatic acini. Plasma CCK in high protein-fed rats was increased approximately threefold in the first 24 h, but returned to control (approximately 2.5 pM) values by day 7. Pancreatic weight, DNA, protein, and chymotrypsin(ogen) significantly increased to maximal values by day 7 in high protein-fed rats. Food intake in high protein-fed rats was inhibited by 47% after 24 h but returned to control values by day 7. The results indicate that high-protein diets initially increase CCK release and increase pancreatic protease secretory capacity and that, when pancreatic protease secretion is sufficient to match protein digestive requirements, the stimulus for CCK secretion is reduced and plasma CCK returns to normal. The pronounced but transient inhibition of food intake in high protein-fed rats is consistent with a role for CCK in regulation of food intake.

Hypocaloric high-protein diet improves fatty liver and hypertriglyceridemia in sucrose-fed obese rats via two pathways

2009 ◽  
Vol 297 (1) ◽  
pp. E76-E84 ◽  
Author(s):  
Takashi Uebanso ◽  
Yutaka Taketani ◽  
Makiko Fukaya ◽  
Kazusa Sato ◽  
Yuichiro Takei ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
Fatty Liver ◽  
Control Diet ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet ◽  
Fibroblast Growth Factor 21 ◽  
Carbohydrate Diet ◽  
Low Carbohydrate Diet ◽  
Obese Rats

The mechanism by which replacement of some dietary carbohydrates with protein during weight loss favors lipid metabolism remains obscure. In this study, we investigated the effect of an energy-restricted, high-protein/low-carbohydrate diet on lipid metabolism in obese rats. High-sucrose-induced obese rats were assigned randomly to one of two energy-restricted dietary interventions: a carbohydrate-based control diet (CD) or a high-protein diet (HPD). Lean rats of the same age were assigned as normal control. There was significantly greater improvement in fatty liver and hypertriglyceridemia with the HPD diet relative to the CD diet. Expression of genes regulated by fibroblast growth factor-21 (FGF21) and involved in liver lipolysis and lipid utilitization, such as lipase and acyl-CoA oxidase, increased in obese rats fed the HPD. Furthermore, there was an inverse correlation between levels of FGF21 gene expression (regulated by glucagon/insulin balance) and increased triglyceride concentrations in liver from obese rats. Expression of hepatic stearoyl-CoA desaturase-1 (SCD1), regulated primarily by the dietary carbohydrate, was also markedly reduced in the HPD group (similar to plasma triglyceride levels in fasting animals) relative to the CD group. In conclusion, a hypocaloric high-protein diet improves fatty liver and hypertriglyceridemia effectively relative to a carbohydrate diet. The two cellular pathways at work behind these benefits include stimulation of hepatic lipolysis and lipid utilization mediated by FGF21 and reduction of hepatic VLDL-TG production by SCD1 regulation.

scholarly journals Changes in body composition with a hypocaloric high-protein diet combined with sedentary, moderate and high-intense physical activity in overweight or obese males: a 6-month randomized controlled trial

2020 ◽  
Author(s):  
Alberto Hernández-Reyes ◽  
A. Vidal ◽  
F. Cámara-Martos ◽  
R. Molina-Luque ◽  
R. Moreno-Rojas
Keyword(s):  
Physical Activity ◽  
Weight Loss ◽  
Body Composition ◽  
High Intensity ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet ◽  
Activity Group ◽  
Physical Activity Group ◽  
Intense Physical Activity

Abstract Objectives Although the effectiveness of high-intensity training has been widely recognized as positive in athletes, its application in a clinical context is not well established. There is enough evidence to confirm that high-intensity routines are safe and that at-risk populations, such as for overweight and obese subjects, can help from these weight loss treatments. The purpose of this study was to lead a trial to test whether manipulation of physical activity in extension to high protein diet intake would induce changes in total weight and body composition. Methods Sixty-eight healthy male volunteers were randomly assigned to one of the experimental groups: a control group with a low-level prescription of physical activity (1–4 METs), moderate physical activity group that performed 10.000 steps walking per day (5–8 METs) and intense physical activity group that trained exercises by at least 70% of VO2max three times a week (> 8 METs). All subjects followed a high-protein diet designed with a reduction of 500 kcal/day. Nutritional counseling was provided throughout the study period to help ensure dietary adherence. This intervention was delivered over twenty-four sessions as weekly one-on-one, face-to-face 30-min consultations. Results A significant reduction in body fat percentage was observed in the intense physical activity group (-20.9 ± 8.8 (CI95%: -25.6 – -16.2), p < 0.001). The change in muscle mass did not produce any significant differences between groups (p > 0.05). Concerning weight, a notable weight loss was found in those subjects who performed moderate or intense physical exercise, vs. those who did light exercise, (p < 0.001) and (p < 0.003), respectively. Conclusion our data strongly suggest that resistance training should be included, whenever possible, in any dietary treatment for improving the body composition of men with overweight or obesity.

scholarly journals FORMULATION AND NUTRITIONAL EVALUATION OF HIGH PROTEIN DIET PRODUCED FROM YELLOW MAIZE (Zea mays) SOYA BEAN (GLYCINE MAX), PUMPKIN (Cucurbita pepo) SEED AND FISH (Alestes nurse) MEAL

2021 ◽  
Vol 2 (2) ◽  
pp. 36-65
Author(s):  
G. Chamba ◽  
A. S. Falmata ◽  
B. P. Bintu ◽  
B. K. Maryam ◽  
S. Modu
Keyword(s):  
Amino Acid ◽  
Fish Meal ◽  
Control Diet ◽  
High Protein Diet ◽  
Amino Acid Profile ◽  
Soya Bean ◽  
High Protein ◽  
Protein Diet ◽  
Pumpkin Seed ◽  
Dried Fish

  The aim of this study was to produce high protein diet for growing children from yellow maize, soya bean, pumpkin seed and fish meal. The raw materials were subjected to different processing techniques. The yellow maize (YM) was blended with different proportions of soya bean (SB), pumpkin seeds (PS) and fish meal (FM) with a view to formulating a high protein diet to address protein Energy Malnutrition. The formulated food Blends were; Blend 1 (70 % YM: 30 % SB), Blend 2 (70 % YM: 30 % PS), Blend 3 (70 % YM: 30 % FM), Blend 4 (70 % YM: 20 % SB :10 % PS), Blend 5 (70 % YM: 15 % SB: 15 % FM), Blend 6 (60 % YM: 20 % PS: 20 % FM), and a therapeutic milk (F-100) was used as a control diet. The raw materials and the food Blends were assayed for proximate, mineral, vitamin content and amino acid profile. The data obtained were analyzed statistically. The results of the proximate composition showed significant (p<0.05) decrease in moisture, protein, total fat and fibre contents of the fermented yellow maize, roasted soya bean and pumpkin seed while that of the dried fish showed significant (P<0.05) increase.  The results shows that food Blend 6 had highest values for protein (17.77±0.09 %), total fat (6.00±0.27%) and total energy (388.10±0.29 Kcal/100g). A Significant (P<0.05) difference was observed in the mineral element content of yellow maize and fish meal after fermentation and drying respectively, while an increase was observed in roasted soya bean and pumpkin seed. The food Blend 5 recorded higher value for Na, and K, while the control diet had higher value for P, Zn, Fe and Cu. An increase in B-group vitamins, and vitamin C, were observed in the samples, while decreased in fat soluble vitamins A and E were observed in fermented yellow maize and dried fish, while decrease was observed in roasted soybean and pumpkin seed. The control diet had higher value for all the vitamins analyzed compared to the food Blends, except for vitamin A and E. The result of the amino acid profile showed that the levels of the essential amino acids were increased in the fermented yellow maize, and dried fish, while a reduction was observed in roasted soya bean and pumpkin seed. However, all the prepared food Blends were enhanced in terms of essential amino acid, but more enhanced in food Blend 6, followed very closely by food Blend 5. The amino acid profile of the control Blend was higher than those of the food Blends1, 2, 3 and 4. Thus, the high energy and protein contents of the formulated diets are adequate in the management of PEM.

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