The Effect of Psyllium and Wheat Bran on Body Weight in People With Parkinson's Disease and Constipation Symptoms

NCT ID: NCT04829760

Last Updated: 2024-06-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

35 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-05-13

Study Completion Date

2024-04-28

Brief Summary

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This is a 10-week randomized, controlled study to compare the safety and efficacy of two common fiber supplements, psyllium and wheat bran in terms of changes in body weight, nutrition status, and bowel function in patients with Parkinson's Disease who have constipation symptoms. After a 2-week run-in period, participants will be randomized to receive 10 grams daily of psyllium, coarse wheat bran, or maltodextrin (placebo) for 8 weeks. Nutritional and neurological evaluations will be conducted at the beginning and end of the 8-week intervention period.

Detailed Description

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Conditions

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Parkinson Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

A randomized, single-blind, placebo-controlled parallel study in which participants consume 10 grams of psyllium, coarse wheat bran, or a placebo (maltodextrin) for eight weeks.
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants

Study Groups

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Psyllium

10 g per day. Participants will be instructed to divide the 10 g into 2 doses and ingest by adding the product to at least 8 ounces (240 mL) of cold water or a beverage that is typically consumed. Participants will ingest the intervention each morning and evening for eight weeks.

Group Type EXPERIMENTAL

Psyllium

Intervention Type DIETARY_SUPPLEMENT

Participants will consume 10 grams of fiber from psyllium in two doses each day for 8 weeks

Coarse wheat bran

10 g per day. Participants will be instructed to divide the 10 g into 2 doses and ingest by adding the product to a food they normally eat.

Group Type EXPERIMENTAL

Coarse wheat bran

Intervention Type DIETARY_SUPPLEMENT

Participants will consume 10 grams of fiber from coarse wheat bran in two doses each day for 8 weeks

Maltodextrin

Volume equivalent to the psyllium. Participants will be instructed to divide the daily dose into 2 doses and ingest by adding the product to a food or to 8 ounces (240 mL) of a beverage that is typically consumed.

Group Type PLACEBO_COMPARATOR

Maltodextrin

Intervention Type DIETARY_SUPPLEMENT

Participants will consume maltodextrin in a volume equivalent to the psyllium intervention (\~2 tablespoons) in two doses each day for 8 weeks

Interventions

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Psyllium

Participants will consume 10 grams of fiber from psyllium in two doses each day for 8 weeks

Intervention Type DIETARY_SUPPLEMENT

Coarse wheat bran

Participants will consume 10 grams of fiber from coarse wheat bran in two doses each day for 8 weeks

Intervention Type DIETARY_SUPPLEMENT

Maltodextrin

Participants will consume maltodextrin in a volume equivalent to the psyllium intervention (\~2 tablespoons) in two doses each day for 8 weeks

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Physician-diagnosed Parkinson's disease
* Age 40-85 years
* Drug naïve or on stable dosage of PD medications with no plans to change for the duration of the study protocol
* Hoehn \& Yahr stage \< 4 in the clinical "ON" state
* Using laxatives (Miralax, Dulcolax, sennosides, etc.) regularly over the past 1 months (≥ 2 days per week)
* Complete informed consent in English
* Maintain habitual diet and exercise routine throughout study period
* Consume the study intervention twice per day during the eight-week intervention period
* Complete daily and weekly questionnaires, and all dietary recalls over approximately 10 weeks
* Fast (no food or drink, except plain water, coffee, or tea) at least 12 hours before each study visit

Exclusion Criteria

* Atypical or secondary Parkinsonism
* Underweight (BMI \<18.5)
* Inability to swallow study supplement due to swallowing concerns
* Currently using a fiber supplement
* Use of another investigational product within 3 months of the screening visit
* Being treated for a physician-diagnosed GI disease or condition other than constipation, gastroparesis, gastroesophageal reflux disease, or diverticular disease
Minimum Eligible Age

40 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Florida

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Bobbi Langkamp-Henken, PhD, RD

Role: PRINCIPAL_INVESTIGATOR

University of Florida

Locations

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University of Florida

Gainesville, Florida, United States

Site Status

Countries

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United States

Other Identifiers

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IRB202100363

Identifier Type: -

Identifier Source: org_study_id

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