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

University of Oregon

Status: Completed

Conditions: Temperature Change, Body

Treatments: Device: Core body temperature device

Study type: Interventional

Funder types: Other

Identifiers

NCT05692947

STUDY00000607

Details and patient eligibility

About

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

Full 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.

Enrollment: 40 patients

Sex: All

Ages: 18 to 59 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Highly trained or elite athlete
• Nonsmokers
• 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

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: None (Open label)

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40 participants in 2 patient groups

Hot/Dry

Experimental group

Description:

Core body temperature, skin temperature, heart rate, and heat perceptions will be collected from elite athletes while running or cycling for 45 minutes in the heat at low humidity (38 degrees Celsius with 10-20% relative humidity).

Treatment:

Device: Core body temperature device

Hot/Humid

Experimental group

Description:

Core body temperature, skin temperature, heart rate, and heat perceptions will be collected from elite athletes while running or cycling for 45 minutes in the heat at high humidity (28 degrees Celsius with 80-100% relative humidity).

Treatment:

Device: Core body temperature device