NCT00942513

Effect of Lactose, Fructose, Sucrose, Whey Protein, and Soy Protein on Substrate Absorption and Oxidation: a Pilot Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 9 (actual)
• Sponsor: United States Department of Agriculture (USDA) · Federal
• Sex: Male
• Age: 25 Years – 65 Years
• Healthy volunteers: Accepted

Summary

Does the consumption of various combinations of mono and disaccharides (lactose, sucrose and fructose) and protein isolates (whey or soy) result in altered substrate absorption, substrate oxidation, and glucose regulation? This proposed research will provide data to determine the relative contribution of source of protein (whey vs soy) and carbohydrate (mono- and disaccharides) on the observed effects of dairy products on absorption, substrate oxidation and glucoregulation mechanisms that affect body composition.

Detailed description

Epidemiological research has shown that dairy products aid in weight loss and weight maintenance. Some evidence suggests that this effect is due to the whey component (which contains whey proteins and lactose) of milk. Previous work from our laboratory has demonstrated that chronic administration of whey protein concentrate results in decreased body fat and insulin concentration. Recent research (unpublished) from Castonguay and colleagues (University of Maryland, College Park, MD) has suggested that specific combinations of sucrose, maltose and lactose similarly alter body fat levels in rats. This proposed research will provide data to determine the relative contribution of source of protein (whey vs soy) and carbohydrate (mono- and disaccharides) on the observed effects of dairy products on absorption, substrate oxidation and glucoregulation mechanisms that affect body composition.

Conditions

• Substrate Absorption
• Substrate Oxidation
• Glucose Regulation

Interventions

Type	Name	Description
OTHER	trt 1	Fructose - 14 g; Lactose - 10 g; Sucrose - 16 g; Starch - 40 g; Whey Protein Isolate - 40 g; Soy Protein Isolate - 0 g
OTHER	trt 2	Fructose - 30 g; Lactose - 10 g; Sucrose - 0 g; Starch - 40 g; Whey Protein Isolate - 40 g; Soy Protein Isolate - 0 g
OTHER	trt 3	Fructose - 24 g; Lactose - 8 g; Sucrose - 8 g; Starch - 40 g; Whey Protein Isolate - 40 g; Soy Protein Isolate - 0 g
OTHER	trt 4	Fructose - 0 g; Lactose - 0 g; Sucrose - 40 g; Starch - 40 g; Whey Protein Isolate - 40 g; Soy Protein Isolate - 0 g
OTHER	trt 5	Fructose - 0 g; Lactose - 0 g; Sucrose - 40 g; Starch - 40 g; Whey Protein Isolate - 0 g; Soy Protein Isolate -40 g
OTHER	trt 6	Fructose - 0 g; Lactose - 40 g; Sucrose - 0 g; Starch - 40 g; Whey Protein Isolate - 40 g; Soy Protein Isolate - 0 g
OTHER	trt 7	Fructose - 0 g; Lactose - 40 g; Sucrose - 0 g; Starch - 40 g; Whey Protein Isolate - 0 g; Soy Protein Isolate -40 g

Timeline

• First posted: 2009-07-21
• Last updated: 2011-02-09

Locations

1 site across 1 country: United States