colostrum-power-output

この研究の注釈：

Bovine colostrum (10g of 20% immunoglobulins) daily for five weeks prior to a 40km time trial increased performance relative to whey control in a somewhat ambiguous manner in elite cyclists, but continuing supplementation for another week of high intensity training before another 40km time trial noted significant improvements in overall performance, intensity (VO2max), and heart rate relative to whey control which was more pronounced in faster athletes.

The ventilatory threshold, which decreased by 14.6+/-19.2% in control, was preserved to 2.2+/-15.7% of baseline value in the colostrum group; peak power output was not influenced at any time.

この研究の注釈：

Supplementation of 60g colostrum daily for eight weeks in otherwise healthy sedentary persons (at least three months of somewhat routine activity) subject to a weight lifting regimen (four times weekly) during the experiment noted that, relative to whey protein, that increases in muscle mass were seen in both groups yet comparable; an exception was total limb circumference and cross sectional area, but the increase in colostrum relative to whey was thought to be due to lower baseline values in the colostrum group.

この研究の注釈：

Supplementation of either 60g whey protein, 60g colostrum, or a combination of 20g colostrum with 40g whey, in elite cyclists over the course of eight weeks noted that performance on a weighted cycling test (similar to Wingate) failed to have any difference between groups (despite all groups improving by about 4% relative to baseline) although in a 2 hour endurance test there was an improvement of 132s and 158s in the colostrum groups (difference not significant) which were both greater than the whey only group at 37s.

この研究の注釈：

In patients with short bowel syndrome, supplementation of colostrum (250mL of a beverage containing 26.5g protein; control of skim milk and protein) for four weeks failed to outperform placebo protein in improving nutritive status and protein absorption and underperformed for increasing weight and lean mass. Power output (assessed by handgrip strength) was not different between groups but increased with protein in general.

Meal-induced GLP-2 secretion was not different between groups.

この研究の注釈：

Supplementation of colostrum at 20g daily for two weeks (relative to the placebo of maltodextrin at 20g) noted that colostrum was associated with an increase in muscle protein synthesis and breakdown, but the overall net protein retention did not differ from maltodextrin placebo.

この研究の注釈：

Supplementation of bovine colostrum (25mL or a 125mL beverage) conferring 49mg IgG and 8.5mcg IGF-1 (125mL group) in otherwise healthy adults for eight days failed to increase IGF-1 overall, but when comparing the levels of IGF-1 pretraining and posttraining it was noted that the colostrum groups had a larger increase in IGF-1 relative to placebo.

There was also a nonsignificant trend to increase IGF-1 over the eight days of the study when compared to placebo, but due to lower baseline IGF-1 in its groups there was a significant increase when comparing the levels of IGF-1 after the study to their own baseline values.

Power output as assessed by jumping was not altered in any group.

この研究の注釈：

Eight weeks supplementation of colostrum powder at 60g (three doses of 20g) in elite field hockey players during the beginning of their competitive seasons noted that, relative to the placebo (whey protein), colostrum failed to improve anaerobic cardiovascular exercise (sprints and suicide runs) and did not influence power output.

Lean mass increased with colostrum relative to baseline, but was similar to the increase seen with whey protein.

この研究の注釈：

Supplementation of 20g colostrum daily for eight weeks in active subjects, relative to the placebo of whey protein (20g), appeared to have a slight increase in lean mass (2.3%) without any changes in weight due to nonsignificant decreases in fat mass; whey protein did not have any significant changes relative to baseline. Measurements via DEXA.

Performance parameters including treadmill time to exhaustion, power output, and muscular endurance did not change.

この研究の注釈：

In lightly active men given colostrum at 60g daily conferring 120mcg IGF-1 (placebo of whey protein at the same dose) daily for eight weeks alongside a six time weekly training protocol noted that colostrum failed to improve any measurement of power output relative to whey protein.