Effects of Different Sports Supplements on Metabolism and Perceptual Responses During Distance Running

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

TERMINATED

Clinical Phase

NA

Total Enrollment

4 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-08-01

Study Completion Date

2025-02-17

Brief Summary

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Several previous studies have shown that repeatedly ingesting carbohydrate supplements during exercise training sessions, over a period of days and weeks, can gradually increase carbohydrate oxidation and reduce gut discomfort during exercise. However, repeatedly ingesting large amounts of carbohydrate during training sessions can be burdensome and can cause gut distress. Thus, it would be advantageous if the same long-term benefits could be realized from consuming these carbohydrate supplements at rest instead of specifically during training sessions. Therefore, the goal of this study is to examine whether repeatedly ingesting a carbohydrate-rich beverage at rest over a 5-day period alters metabolism and gut symptoms while ingesting carbohydrate during exercise.

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Detailed Description

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Conditions

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Anomalies Gastrointestinal

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Participants

Study Groups

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Carbohydrate Beverage

A glucose-fructose beverage mixture supplying 100 grams of carbohydrate per day for 5 days

Group Type EXPERIMENTAL

Carbohydrate Beverage

Intervention Type DIETARY_SUPPLEMENT

The carbohydrate beverage will supply approximately 100 grams of carbohydrate per day (in the form of glucose and fructose)

Placebo Beverage

An artificially-sweetened beverage containing aspartame

Group Type PLACEBO_COMPARATOR

Placebo Beverage

Intervention Type DIETARY_SUPPLEMENT

The placebo beverage will contain aspartame.

Interventions

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Carbohydrate Beverage

The carbohydrate beverage will supply approximately 100 grams of carbohydrate per day (in the form of glucose and fructose)

Intervention Type DIETARY_SUPPLEMENT

Placebo Beverage

The placebo beverage will contain aspartame.

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Be currently running ≥15 miles per week
* Have completed at least one run \>60 minutes over the past month
* Have completed one or more marathons within the past year

Exclusion Criteria

* Overt cardiovascular disease or metabolic disorder
* Adverse symptoms (e.g., unusual shortness of breath, dizziness, chest pain) with exercise
* Allergies/intolerances to any of the ingredients in the beverages

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes