Acute Berry Intake on Metabolic Control and Cognitive Function (RRB3)

• ClinicalTrials.gov Identifier: NCT03879213
• Recruitment Status: Completed
• First Posted: March 18, 2019
• Last Update Posted: July 14, 2020
• Sponsor: Clinical Nutrition Research Center, Illinois Institute of Technology
• Information provided by (Responsible Party): Clinical Nutrition Research Center, Illinois Institute of Technology

Study Description

Brief Summary:

The objectives of this study are:

1. Evaluate the effects of acute dietary raspberry intake on metabolic-associated impairments in cognitive and psychomotor function in overweight/obese adults (55-70y) following a meal challenge
2. Evaluate the effects of acute dietary raspberry on measures of vascular function.

Condition or disease	Intervention/treatment	Phase
Healthy	Dietary Supplement: Active breakfast; Dietary Supplement: Control breakfast	Not Applicable

Detailed Description:

The proposed study will be conducted in humans according to Good Clinical Practice (GCP) guidelines. All subjects will review and sign an Informed Consent Form approved by the Illinois Institute of Technology's Institutional Review Boards (IRB) prior to screening.

This multi-center clinical trial is a randomized, single-blind, 2-arm, placebo-controlled, within subject cross-over trial, featuring a repeated postprandial sampling paradigm to evaluate the effects of acute dietary red raspberry intake on cognitive function, inflammation, insulin sensitivity / glucose handling and vascular function in overweight/obese older adults after consuming a standardized challenge meal.

A planned sample size of 30 will be enrolled into the study. This study will require one initial screening visit and 3 study visits. This study will take approximately 3-4 weeks per subject to complete.

The initial screening visit will provide subject with their site-specific, IRB-approved informed consent document prior to the start of any study related procedures. Subject eligibility will be determined through anthropometric measurements, vital signs, fasting blood glucose test (finger prick), and completion of a survey relate to general eating, health, mood and exercise habits.

Eligible subjects will follow a limited polyphenolic diet throughout the duration of their participation, although stricter guidelines will be imposed during the 3 days prior to a study visit. Shopping lists and meal plans will be provided to subjects, along with counseling by the investigator's study dietitians, to help subjects adhere to the limited polyphenolic diet. The trial will initiate with a 3-day food diary to assess background (pre-study) dietary intake followed by counseling to follow a diet relatively low in (poly)phenolic rich-beverages/foods, which will be maintained for the duration of the experiment. After an initial 7 day run-in period on the limited polyphenolic diet, subjects will be randomized to 1 of 2 treatment sequences. Treatment codes will be maintained by the principal investigator/study physician. All subjects will receive both treatments, once each on 2 different occasions and separated by at least 1 week. Red raspberries or placebo will be provided with a standardized meal providing 840 kcal. A low-polyphenol snack will be provided to subjects after their final cognitive assessment.

Each visit will last ~ 9.5 hours and subjects will be required to remain at the Clinical Unit for the duration of the visit. Blood samples will be collected at 0 (fasting) and at 0.5 h, 1 h, 2 h, 4 h, 5 h, 6 h and 7.5 h via a catheter placed on the non-dominant arm by a registered nurse. Cognitive function will be measured at 0 (fasting), 2 h, and 6 h. FMD or NIRS will be conducted at the CNRC or the HNRCA, respectively at 0 (fasting), and at 1 h and 5 h.

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 30 participants
• Allocation: Randomized
• Intervention Model: Crossover Assignment
• Intervention Model Description: Multi center, randomized, single-blind, 2-arm, placebo-controlled, within subject cross-over trial, featuring a repeated postprandial sampling paradigm
• Masking: Single (Participant)
• Masking Description: Single (Participant) Single blinded
• Primary Purpose: Other
• Official Title: The Effects of Acute Raspberry Intake on the Relationship Between Enhanced Metabolic Control and Cognitive and Psychomotor Function
• Actual Study Start Date: September 17, 2018
• Actual Primary Completion Date: February 1, 2020
• Actual Study Completion Date: June 1, 2020

Arms and Interventions

Arm	Intervention/treatment
Experimental: Active; freeze-dried red raspberry powder (25 g) in active breakfast meal	Dietary Supplement: Active breakfast; freeze-dried red raspberry powder (12.5 g) in drink+ freeze-dried red raspberry powder (12.5 g) in buttermilk biscuit sandwich
Placebo Comparator: Placebo; Placebo breakfast	Dietary Supplement: Control breakfast; Control drink + buttermilk biscuit sandwich

Outcome Measures

Primary Outcome Measures :

1. Changes in Profile of Mood States response between 2 treatments [ Time Frame: Baseline to 6 hours ]
   Cognitive assessment tasks will be performed in Profile of Mood States
2. Changes in Digit Symbol Coding response between 2 treatments [ Time Frame: Baseline to 6 hours ]
   Cognitive assessment tasks will be performed in Digit Symbol Coding
3. Changes in Hopkins Verbal Learning Test response between 2 treatments [ Time Frame: Baseline to 6 hours ]
   Cognitive assessment tasks will be performed in Hopkins Verbal Learning Test
4. Changes in CANTAB- paired-associates-learning response between 2 treatments [ Time Frame: Baseline to 6 hours ]
   Cognitive assessment tasks will be performed in CANTAB- paired-associates-learning
5. Changes in CANTAB- rapid-visual-information-processing response between 2 treatments [ Time Frame: Baseline to 6 hours ]
   Cognitive assessment tasks will be performed in CANTAB- rapid-visual-information-processing
6. Changes in CANTAB- spatial-working-memory response between 2 treatments [ Time Frame: Baseline to 6 hours ]
   Cognitive assessment tasks will be performed in CANTAB- spatial-working-memory

Secondary Outcome Measures :

1. Changes in Psychomotor function between 2 treatments [ Time Frame: Baseline to 6 hours ]
   Psychomotor function will be measured with the Grooved Pegboard
2. Changes in postprandial endothelial function between 2 treatments [ Time Frame: Baseline to 5 hours ]
   Vascular Assessments will be measured with Flow mediated vasodilation (FMD)

Eligibility Criteria

• Ages Eligible for Study: 55 Years to 70 Years (Adult, Older Adult)
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes

Criteria

Inclusion Criteria:

• BMI between 27 and 35 kg/m2 and/or waist circumference (>35 inches for women, >40 inches for men)
• Aged 55-70 years old
• Able to provide informed consent and comply with study procedures
• Willing to maintain stable body weight and follow his/her habitual diet and physical activity patterns throughout the trial.
• Judged by the Investigator to be in general good health on the basis of medical history and screening laboratory tests.

Exclusion Criteria:

• Current smoker and/or marijuana user, past smokers may be allowed in the study if stopped >2 years
• Have a history or presence of atherosclerotic cardiovascular disease, inflammatory disease, diabetes mellitus, or other systemic diseases, psychological or psychiatric disorders
• Have recent surgery or injury to head
• Mini-Mental Status Exam score < 24 or Beck Depression Inventory score > 20
• Taking any medications that would interfere with outcomes of the study (i.e., lipid-lowering medications, anti-inflammatory drugs, and supplements, not including multivitamin/mineral or calcium/Vit D supplements),
• Unstable use of any medication/supplement
• Have a history of cancer in the prior 5 years, except for non-melanoma skin cancer
• Addicted to drugs and/or alcohol (>2 drinks/day)
• Have been exposed to any non-registered drug product within last 30 days.
• Working overnight (e.g. 3rd shift of overnight workers)
• Excessive exercisers or trained athletes
• Have allergies/intolerances to berries.
• Vegetarian/vegan or have extreme dietary habits.
• Excessive coffee/tea drinker
• Actively losing weight/ trying to lose weight (unstable body weight fluctuations of > 5 kg in 3 months)
• Donated blood within last 3 months
• Female who is pregnant, planning to be pregnant, breastfeeding
• Current regular consumption of berries which exceeds > 2 servings per day
• The individual has a condition the Investigator believes would interfere with his or her ability to provide informed consent or comply with the study protocol, or which might confound the interpretation of the study results or put the person at undue risk.

Contacts and Locations

Locations

United States, Illinois

Clinical Nutrition Research Center

Chicago, Illinois, United States, 60616

Sponsors and Collaborators

Clinical Nutrition Research Center, Illinois Institute of Technology

Investigators

• Principal Investigator: Britt Burton-Freeman, Ph.D; Illinois Institute of Technology

More Information

• Responsible Party: Clinical Nutrition Research Center, Illinois Institute of Technology
• ClinicalTrials.gov Identifier: NCT03879213
• Other Study ID Numbers: IRB2018-046
• First Posted: March 18, 2019
• Last Update Posted: July 14, 2020
• Last Verified: July 2020

• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Clinical Nutrition Research Center, Illinois Institute of Technology:

Raspberry; Metabolic responses; Endothelial function; Cognitive function