Compared with an energy-restricted SP diet , an isocalorically prescribed HP diet provides modest benefits for reductions in body weight , FM , and triglycerides and for mitigating reductions in FFM and REE
BACKGROUND It is currently unclear whether altering the carbohydrate-to-protein ratio of low-fat , energy-restricted diets augments weight loss and cardiometabolic risk markers .
OBJECTIVE The objective was to conduct a systematic review and meta- analysis of studies that compared energy-restricted , isocaloric , high-protein , low-fat ( HP ) diets with st and ard-protein , low-fat ( SP ) diets on weight loss , body composition , resting energy expenditure ( REE ) , satiety and appetite , and cardiometabolic risk factors .
Effects of an 8-week high-protein or high-carbohydrate diet in adults with hyperinsulinemia.
CONTEXT Incidence of insulin resistance ( IR ) in Americans is steadily rising . IR may be ameliorated with < or = 5 % loss in body weight . OBJECTIVE To examine effects of 2 weight-loss diets on body weight and composition in overweight adults with IR . DESIGN Participants r and omly assigned to a high-protein , low-fat ( HPLF ) or a high-carbohydrate , low-fat ( HCLF ) diet for 8 weeks . SETTING All meals prepared and weighed in the metabolic kitchen at Arizona State University . Lunch consumed on-site ; all other meals packaged for home consumption . PATIENTS Twenty overweight , healthy participants with elevated fasting serum insulin ( > or = 15 microU/L ) were recruited . INTERVENTIONS Both diets were low-fat ( 27 % kcal from fat ; < 7 % saturated , < or = 10 % monounsaturated , and < or = 10 % polyunsaturated ) and energy-restricted ( energy levels were 1200 , 1500 , 1700 or 2000 kcal ) ; HPLF : 32 % protein , 41 % carbohydrate ; HCLF : 59 % carbohydrate , 14 % protein . Energy levels were assigned on the basis of participant 's resting metabolic rate . MAIN OUTCOME MEASURES Body composition , etabolic indices , fasting plasma glucose , and insulin . RESULTS No significant differences were found in the main outcome measures between the diets . Body weight ( HPLF : -4.9 kg ; HCLF : -4.0 kg ) and total percent body fat ( HPLF : -1.5 % ; HCLF : -0.4 % ) significantly reduced from baseline to week 8 ( P = .005 and P = .035 , respectively ) . CONCLUSION Both diets promoted > or = 5 % loss in body weight and significantly reduced percent body fat
Compared with an energy-restricted SP diet , an isocalorically prescribed HP diet provides modest benefits for reductions in body weight , FM , and triglycerides and for mitigating reductions in FFM and REE
BACKGROUND It is currently unclear whether altering the carbohydrate-to-protein ratio of low-fat , energy-restricted diets augments weight loss and cardiometabolic risk markers .
OBJECTIVE The objective was to conduct a systematic review and meta- analysis of studies that compared energy-restricted , isocaloric , high-protein , low-fat ( HP ) diets with st and ard-protein , low-fat ( SP ) diets on weight loss , body composition , resting energy expenditure ( REE ) , satiety and appetite , and cardiometabolic risk factors .