Analysis showed that soy products significantly reduced body weight , BMI , body fat percent and waist circumference in overweight or obese Asian population s ( −0.37 kg , P = 0.010 ; −0.27 kg/m2 , P = 0.042 ; −0.36 % , P = 0.032 ; −0.35 cm , P = 0.049 ) and more significant effects were observed in non-menopausal women reduced body weight ( −0.59 kg , P = 0.041 ) , BMI ( −0.59 , P = 0.041 ) and waist circumference ( −0.59 cm , P = 0.041 ) in overweight or obese population s. Conclusion : This meta- analysis showed that soy products  have weight loss effects , mainly due to soy protein , isoflavone and soy fiber
Background : The effect of soy products on the weight of overweight or obese people  is controversial , so we aim ed to conduct a systematic review and a meta- analysis of published r and omized controlled trials to analyze whether supplementation with soy products can help them to lose weight .
Whey protein supplementation preserves postprandial myofibrillar protein synthesis during short-term energy restriction in overweight and obese adults.
BACKGROUND Higher dietary energy as protein during weight loss results in a greater loss of fat mass and retention of muscle mass ; however , the impact of protein quality on the rates of myofibrillar protein synthesis ( MPS ) and lipolysis , processes that are important in the maintenance of muscle and loss of fat , respectively , are unknown . OBJECTIVE We aim ed to determine how the consumption of different sources of proteins ( soy or whey ) during a controlled short-term ( 14-d ) hypoenergetic diet affected MPS and lipolysis . METHODS Men ( n = 19 ) and women ( n = 21 ) ( age 35 - 65 y ; body mass index 28 - 50 kg/m(2 ) ) completed a 14-d controlled hypoenergetic diet ( -750 kcal/d ) . Participants were r and omly assigned , double blind , to receive twice-daily supplements of isolated whey ( 27 g/supplement ) or soy ( 26 g/supplement ) , providing a total protein intake of 1.3 ± 0.1 g/(kg · d ) , or isoenergetic carbohydrate ( 25 g maltodextrin/supplement ) result ing in a total protein intake of 0.7 ± 0.1 g/(kg · d ) . Before and after the dietary intervention , primed continuous infusions of L-[ring-(13)C6 ] phenylalanine and [(2)H5]-glycerol were used to measure postabsorptive and postpr and ial rates of MPS and lipolysis . RESULTS Preintervention , MPS was stimulated more ( P < 0.05 ) with ingestion of whey than with soy or carbohydrate . Postintervention , postabsorptive MPS decreased similarly in all groups ( all P < 0.05 ) . Postpr and ial MPS was reduced by 9 ± 1 % in the whey group , which was less ( P < 0.05 ) than the reduction in soy and carbohydrate groups ( 28 ± 5 % and 31 ± 5 % , respectively ; both P < 0.05 ) after the intervention . Lipolysis was suppressed during the postpr and ial period ( P < 0.05 ) , but more so with ingestion of carbohydrate ( P < 0.05 ) than soy or whey . CONCLUSION We conclude that whey protein supplementation attenuated the decline in postpr and ial rates of MPS after weight loss , which may be of importance in the preservation of lean mass during longer-term weight loss interventions . This trial was registered at clinical trials.gov as NCT01530646
Analysis showed that soy products significantly reduced body weight , BMI , body fat percent and waist circumference in overweight or obese Asian population s ( −0.37 kg , P = 0.010 ; −0.27 kg/m2 , P = 0.042 ; −0.36 % , P = 0.032 ; −0.35 cm , P = 0.049 ) and more significant effects were observed in non-menopausal women reduced body weight ( −0.59 kg , P = 0.041 ) , BMI ( −0.59 , P = 0.041 ) and waist circumference ( −0.59 cm , P = 0.041 ) in overweight or obese population s. Conclusion : This meta- analysis showed that soy products  have weight loss effects , mainly due to soy protein , isoflavone and soy fiber
Background : The effect of soy products on the weight of overweight or obese people  is controversial , so we aim ed to conduct a systematic review and a meta- analysis of published r and omized controlled trials to analyze whether supplementation with soy products can help them to lose weight .