NCT03956602 · San Diego State University
Effects of Snack Types on Acute Glucose and Insulin Response
What this study is about
The purpose of the present study was to determine the effects of different type of snack consumption on postprandial satiety, glucose, insulin, antioxidant capacity and anxiety in healthy subjects.
View original scientific description
The purpose of the present study was to determine the effects of different type of snack consumption on postprandial satiety, glucose, insulin, antioxidant capacity and anxiety in healthy subjects.
Interventions
OTHER
Pretzels
To examine postprandial responses of pretzel consumption
OTHER
Brazil nuts
To examine postprandial responses of Brazil nut consumption
OTHER
Potato chips
To examine postprandial responses of potato chip consumption
OTHER
Mixed nuts
To examine postprandial responses of mixed nut consumption
OTHER
White bread
To examine postprandial responses of white bread consumption
OTHER
Dried mango
To examine postprandial responses of dried mango consumption
OTHER
Mango fruit
To examine postprandial responses of fresh mango consumption
Primary outcome measures
Change of Satiety
Time frame: 0, 20, 40, 60, 90 and 120 minutes post snack consumption
Hunger feeling (appetite) will be examined using visual analog scale (0-10): 0 least and 10 greatest
Change of glucose level
Time frame: 0 and 40 minutes post snack consumption
Blood will be collected by finger pricks and change of glucose level will be examined.
Change of insulin level
Time frame: 0 and 40 minutes post snack consumption
Blood will be collected by finger pricks and change of insulin level will be examined
Change of anxiety feeling
Time frame: 0 and 40 minutes post snack consumption
Anxiety feeling will examined using STAI (Spielberger Stasumte-Trait Anxiety Inventory) questionnaire (1-4): 1 least and 4 greatest, total summed score will be used.
Change of antioxidant level
Time frame: 0 and 40 minutes post snack consumption
Blood will be collected by finger pricks and change of antioxidant level will be examined
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- 18-55 years old
Exclusion criteria
- Pregnant woman
- Required dietary supplement use
- Required medication of metabolic disorders
- Allergy to nuts or gluten (wheat)
Where
- San Diego, California
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jan 21, 2026 · Source of record for eligibility and locations