Whey protein improves HDL/non-HDL ratio and body weight gain in rats subjected to the resistance exercise

Abstract

ABSTRACT

Whey protein isolate decreases murine stomach weight and intestinal length and alters the expression of Wnt signalling-associated genes

“…A reduction in cumulative energy intake was observed in rats fed a diet containing 42 % energy from protein (26 % whey and 16 % albumin) between 5 and 10 weeks compared with those fed a similar diet but whey replaced by either albumin or soya protein (7) . In contrast, when energy from dietary protein was reduced to 15 or 25 %, with energy from fat being maintained at about 9 and 15 %, respectively, whey protein did not affect energy intake and body-weight gain (8,9) . Interestingly, the latter studies assessed food intake only for a period of 2 or 7 weeks, in comparison to the study on high whey protein, in which the reduction in energy intake occurred by week 5 and continued up to 10 weeks (7) .…”

“…Thus, the purpose of the present study was to assess whether WPI at 20 % energy in a diet containing 10 % energy from fat alters energy balance and, where there is an effect, to explore the underlying mechanisms. The study lasted for 15 weeks in consideration of the previous published data showing that whey protein (at an adequate range) did not affect energy balance up to 7 weeks ( 8 , 9 ) .…”