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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04643080
Other study ID # 18-203
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date March 7, 2019
Est. completion date July 15, 2019

Study information

Verified date November 2020
Source University of Idaho
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of this study was to determine the effect of dairy-based probiotics on cognitive function, emotional wellbeing, and inflammation. Subjects were assigned to either consume 6 oz of yogurt/day or abstain from consuming yogurt and other probiotic-containing foods for 12 weeks. Subjects completed baseline testing and 12-week follow-up testing consisting of a laboratory blood draw to assess inflammatory biomarkers, and a computerized assessment to evaluate cognitive and emotional wellbeing measures.


Recruitment information / eligibility

Status Completed
Enrollment 47
Est. completion date July 15, 2019
Est. primary completion date July 15, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 50 Years and older
Eligibility Inclusion Criteria: - ability to participate in a 12-week study - at least 50 years of age - not currently taking a probiotic dietary supplement - willing to refrain from consuming probiotic dietary supplements or fermented foods for 12-weeks - willing to have blood drawn twice - willing to consume yogurt daily for 12 weeks Exclusion Criteria: -

Study Design


Intervention

Other:
Yogurt
6 oz. of a commercially available yogurt were provided daily for 12 weeks

Locations

Country Name City State
United States University of Idaho Boise Idaho
United States University of Idaho Coeur d'Alene Idaho
United States Kansas State University Manhattan Kansas
United States University of Idaho Pocatello Idaho

Sponsors (2)

Lead Sponsor Collaborator
University of Idaho Kansas State University

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Change in Fluid Cognition Composite from Baseline to 12-weeks Subjects completed a battery of computerized cognitive assessments at baseline and 12-weeks, using the NIHToolbox for Assessment of Neurological and Behavioral Function application. The fluid cognition composite score was derived from scores on the Flanker Inhibitory Control and Attention Test, Dimensional Change Card Sort Test, Picture Sequence Memory Test, Pattern Comparison Processing Speed Test, and List Sorting Working Memory test. Change from baseline fluid cognition composite score at 12-weeks
Primary Change in Executive Function from Baseline to 12-weeks Subjects completed a battery of computerized cognitive assessments at baseline and 12-weeks, using the NIHToolbox for Assessment of Neurological and Behavioral Function application. Executive function was assessed by the Flanker Inhibitory Control and Attention Test and the Dimensional Change Card Sort Test. Change from baseline executive function test scores at 12 weeks
Primary Change in Attention from Baseline to 12-weeks Subjects completed a battery of computerized cognitive assessments at baseline and 12-weeks, using the NIHToolbox for Assessment of Neurological and Behavioral Function application. Attention was assessed by the Flanker Inhibitory Control and Attention Test. Change from baseline attention test scores at 12 weeks
Primary Change in Working Memory from Baseline to 12-weeks Subjects completed a battery of computerized cognitive assessments at baseline and 12-weeks, using the NIHToolbox for Assessment of Neurological and Behavioral Function application. Working Memory was assessed by the List Sorting Working Memory test. Change from baseline working memory test scores at 12 weeks
Primary Change in Processing Speed from Baseline to 12-weeks Subjects completed a battery of computerized cognitive assessments at baseline and 12-weeks, using the NIHToolbox for Assessment of Neurological and Behavioral Function application. Processing Speed was assessed by the Pattern Comparison Processing Speed test. Change from baseline processing speed test scores at 12 weeks
Primary Change in Episodic Memory from Baseline to 12-weeks Subjects completed a battery of computerized cognitive assessments at baseline and 12-weeks, using the NIHToolbox for Assessment of Neurological and Behavioral Function application. Episodic Memory was assessed by the Picture Sequence Memory test. Change in baseline episodic memory score at 12 weeks
Secondary Change in Negative Affect from Baseline to 12-weeks Subjects completed a battery of computerized self-reported questionnaires using the NIHToolbox for Assessment of Neurological and Behavioral Function. A Negative Affect summary score was derived from 5 individual assessments of anger affect, anger hostility, sadness, fear affect, and perceived stress. Change from baseline negative affect test scores at 12 weeks
Secondary Change in Psychological Wellbeing Subjects completed a battery of computerized self-reported questionnaires using the NIHToolbox for Assessment of Neurological and Behavioral Function. A Psychological Wellbeing summary score was derived from 3 individual assessments of life satisfaction, meaning, and positive affect. Change from baseline psychological satisfaction test scores at 12 weeks
Secondary Change in Social Satisfaction from Baseline to 12-weeks Subjects completed a battery of computerized self-reported questionnaires using the NIHToolbox for Assessment of Neurological and Behavioral Function. A Social Satisfaction summary score was derived from 5 individual assessments of friendship, loneliness, emotional support, instrumental support, and perceived rejection. Change from baseline social satisfaction test scores at 12 weeks
Secondary Change in serum interleukin-6 concentration from baseline to 12 weeks Serum samples were analyzed to determine concentrations of interleukin-6 (pg/mL). Change from baseline serum interleukin-6 concentration at 12 weeks
Secondary Change in serum tumor necrosis factor-alpha concentration from baseline to 12 weeks Serum samples were analyzed to determine concentrations of tumor necrosis factor-alpha (pg/mL). Change from baseline serum tumor necrosis factor-alpha concentration at 12 weeks
Secondary Change in serum c-reactive protein concentration from baseline to 12 weeks Serum samples were analyzed to determine concentrations of c-reactive protein (mg/L). Change from baseline serum c-reactive protein concentration at 12 weeks
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