NCT03309124

Effect of White Potatoes on Glycemic Response and Satiety in Older Adults

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 20 (actual)
• Sponsor: Toronto Metropolitan University · Academic / Other
• Sex: All
• Age: 65 Years
• Healthy volunteers: Accepted

Summary

The purpose of the present study is to explore the influence of cooking methods of potatoes on post-prandial glycaemia and satiety in healthy older adults.

Detailed description

Each of the 5 study sessions will be at least 7 days apart. Either meal skipping, or one of three treatments of white potatoes (a) baked (with skin), (b) mashed, (c) fried French fries, or white bread, prepared on the day of testing, will be served to healthy older adults (65+ years). Participants will consume the equivalent to 1 medium sized potato (\~280 kcal) or an equivalent amount of calories from white bread. Glycemic response, insulin, incretin hormones (glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic peptide (GIP)), dipeptidyl peptidase 4 (DPP4), and cholecystokinin (CCK) will be measured for 2 h (0, 15, 30, 45, 60, 90 and 120 min) following meal consumption, as well as mood and subjective appetite. An ad libitum test meal will be provided at 120 min to assess food intake suppression.

Conditions

• Healthy

Interventions

Type	Name	Description
OTHER	White bread	Toasted, with canola oil added to match for fat content of French fries (13.9 grams), as well as being matched for energy (280 kilocalories) and available carbohydrate content (33 grams) of potato treatments.
OTHER	Baked potato with skin	Baked russet potato with canola oil added once baked to match for fat content of French fries, and also matched for the salt content of white bread (280 milligrams).
OTHER	Mashed potatoes	Mashed potatoes prepared from frozen, with canola oil added to match for fat content of French fries, as well as being matched for energy and available carbohydrate content of the baked potato.
OTHER	Fried French fries	Prepared from frozen, matched for energy and available carbohydrate content of baked potato and salt content of white bread.
OTHER	Meal skipping	No food given

Timeline

• Start date: 2018-04-09
• Primary completion: 2019-08-01
• Completion: 2019-08-01
• First posted: 2017-10-13
• Last updated: 2019-09-13

Locations

1 site across 1 country: Canada