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

Old Dominion University

Status: Completed

Conditions: Impaired Thermoregulation

Treatments: Other: Placebo Beverage; Other: Carbohydrate Beverage

Study type: Interventional

Funder types: Other

Identifiers

NCT02814188

892213-3

Details and patient eligibility

About

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.

Enrollment: 37 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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37 participants in 2 patient groups, including a placebo group

Carbohydrate Beverage

Experimental group

Treatment:

Other: Carbohydrate Beverage

Placebo Beverage

Placebo Comparator group

Treatment:

Other: Placebo Beverage