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Effects of Pre-Exercise Nutrition Strategies on Body Temperature and Thermoregulatory Responses

NCT ID: NCT02814188

Last Updated: 2017-12-15

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

37 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-06-30

Study Completion Date

2017-09-30

Brief Summary

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Carbohydrate ingestion, in particular fructose, has been shown in a handful of previous studies to elicit a thermic effect and increase core body temperature after ingestion. Carbohydrate foods and supplements are commonly consumed prior to endurance running competition, including situations where an athlete's ability to dissipate body heat is compromised. Thus, there is some potential for pre-exercise carbohydrate ingestion to have a deleterious effect on body heat regulation in hot and humid environments. Thus, this projects aims to study the effects of pre-exercise carbohydrate ingestion on core body temperature, perceived thermal stress, and perceived exertion during high-intensity running.

Detailed Description

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Conditions

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Impaired Thermoregulation

Keywords

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Exercise

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Carbohydrate Beverage

Group Type EXPERIMENTAL

Carbohydrate Beverage

Intervention Type OTHER

750 ml of a 13.5% carbohydrate (sucrose) beverage

Placebo Beverage

Group Type PLACEBO_COMPARATOR

Placebo Beverage

Intervention Type OTHER

750 ml of an artificially-sweetened beverage

Interventions

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Carbohydrate Beverage

750 ml of a 13.5% carbohydrate (sucrose) beverage

Intervention Type OTHER

Placebo Beverage

750 ml of an artificially-sweetened beverage

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Be currently running ≥20 miles per week
* Have a projected 5-km maximal effort running time between 16:00-23:00 minutes

Exclusion Criteria

* Any gastrointestinal disorders that cause swallowing problems or frequent nausea/vomiting
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Old Dominion University

OTHER

Sponsor Role lead

Responsible Party

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Patrick Wilson, PhD

Assistant Professor of Exercise Science

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Human Performance Laboratory

Norfolk, Virginia, United States

Site Status

Countries

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United States

Other Identifiers

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892213-3

Identifier Type: -

Identifier Source: org_study_id