The Validity of CORE Sensor in Heat Training for Male and Female Endurance Athletes


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This study is investigating the efficacy of CORE™ devices in calculating core body temperature in athletes under varying environmental conditions.

Targeted Conditions

Study Overview

Start Date
September 19, 2022
Completion Date
December 31, 2024
Date Posted
January 20, 2023
Accepts Healthy Volunteers?


Full Address
Bowerman Sports Science Center at the University of Oregon
Eugene, Oregon 97403, United States


Minimum Age (years)
Maximum Age (years)
Eligibility Criteria
Inclusion Criteria:

Highly trained or elite athlete
Able to read and speak English
No underlying cardiovascular limitations

Exclusion Criteria:

Currently or previously a habitual smoker (nicotine/cannabis)
Pregnant, breast feeding, trying to conceive, undergoing treatment to increase sperm count
Those taking medications that affect cardiovascular function, with the exception of oral contraceptives
History of stroke, clotting disorders or venous thrombosis
A history of heat illness or heat injury
History of obstructive diseases of the gastrointestinal tract including diverticulosis, diverticulitis, inflammatory bowel disease, peptic ulcer disease, Chron's disease, ulcerative colitis, or previous GI surgery

Study Contact Info

Study Contact Name
Christopher T Minson, PhD; Karen W Needham, BS
Study Contact Phone

Contact Listings Owner Form

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Other Details

FDA Regulated Drug?
FDA Regulated Device?
Detailed Description
As athletes exercise, their core body temperature rises, which can affect their performance. Additionally, repeated mild to moderate heat stress, heat acclimation, can be used to improve exercise tolerance and performance. Thus, an athlete can gain performance benefits through monitoring their heat loading while training. The aim of this study is to compare the CORE™ body temperatures recorded during exercise in two different environmental conditions in which the investigators will get a separation of core temperature and skin temperature. The investigators will accomplish this by recruiting trained and elite athletes, ages 18-59, to participate in two exercise sessions in the heat at low (10-20%) and high (80-100%) relative humidity. The investigators will compare the CORE™ temperature estimates against an FDA approved ingestible temperature monitoring device to assess the accuracy of the CORE™ devices.
NCTid (if applicable)