Prior to the U Conn study, only one previous study compared the effect of soy and whey protein supplementation on the hormones of men doing resistance training.15 That study reported «no significant differences» between the soy and
whey groups for total testosterone, free testosterone and sex - hormone - binding globulin (SHBG) after twelve weeks of supplementation.
Not exact matches
Results showed there were no significant differences in the ratings between the
groups supplemented with rice versus
whey for recovery.
Results showed no significant differences in the ratings between the
groups supplemented with rice versus
whey for recovery and both
groups experienced changes in body composition, strength and power, specifically, muscle mass, strength, and power increased while body fat decreased.
One
group were additionally given 25 grams maltodextrin which is a carbohydrate and the other
group was given
whey powder supplement twice per day
for a duration of six months.
Once
group took 25 grams of
whey protein immediately after a set of leg - extension exercises; the other
group received the same 25 grams of
whey protein in 10 2.5 - gram doses every 20 minutes
for 200 minutes.
A twice daily dietary supplement
for 13 weeks containing
whey protein, leucine, and vitamin D (20 g
whey protein, 3 g total leucine, and 800 IU vitamin D) was given to older (~ 78 years) primarily independent - living sarcopenic adults and resulted in improved chair — stand test time and showed a greater gain in skeletal muscle mass than the control
group (and these results were repeated in other studies).
After 12 weeks, the
group on
whey protein lost the most weight: 7.6 kg (16.7 pounds), compared to 6.1 kg (13.4 pounds)
for those on the other proteins, and 3.1 kg (6.8 pounds)
for those in the carbohydrate
group.
Of these 24, the test
group received a drink containing 21 g of leucine enriched
whey protein, 9 g carbohydrates, 3 g fat, and 800 IU cholecalciferol (vitamin D3) before breakfast
for six weeks.