Neither type of whey protein affected insulin levels in rats' blood an hour after exercise, regardless of dose.

Scientific Claim

In rats, whey protein hydrolysate and intact whey protein ingestion at 0.5 or 2.0 g/kg body weight were not associated with changes in plasma insulin levels 60 minutes post-exercise compared to the control group.

Original Statement

“plasma insulin levels did not differ between the control group and the WPH or the WPC groups 60 min after administration.”

From study:Effects of whey protein hydrolysate ingestion on post-exercise muscle protein synthesis compared with intact whey protein in rats

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

association

Can only show association/correlation

Assessment Explanation

The study design supports association claims. The phrasing correctly uses 'not associated' for no effect.

Evidence from Studies

Supporting (1)

Effects of whey protein hydrolysate ingestion on post-exercise muscle protein synthesis compared with intact whey protein in rats

Randomized Controlled Trial

Animal

2019

Contradicting (0)

No contradicting evidence found

Source Study

Effects of whey protein hydrolysate ingestion on post-exercise muscle protein synthesis compared with intact whey protein in rats

Score: 13

DOI: 10.1186/s12986-019-0417-9

Similar Assertions

When rats exercised and then ate a small amount of whey protein hydrolysate, their muscles built protein faster than when they ate regular whey protein at the same dose.

84%

When rats ate a larger dose of regular whey protein, their blood had more leucine than when they ate the same amount of hydrolyzed whey protein an hour later.

82%

A small dose of whey protein hydrolysate made a key muscle-building signal stronger in rats than regular whey protein or no protein.

78%

A larger dose of regular whey protein activated a key muscle-building pathway more than hydrolyzed whey protein or no protein in rats.

77%

After swimming, rats that drank whey protein had more leucine in their blood than those drinking other proteins at 1 and 1.5 hours after eating.

71%