Impact of Neck Cooling Collar on Exercise Performance in the Heat

Inclusion criteria

• Physically active (at least 30 minutes of exercise 3-5 days per week) male
• been cleared by the medical monitor for this study
• Have a VO2max >45ml/kg/min

Exclusion criteria

• Have a current musculoskeletal injury that would limit their physical activity or preclude the participant from walking, jogging, running, sprinting, or cutting.
• Chronic health problems that affect your ability to thermoregulate (disorders affecting the liver, kidneys or the ability to sweat normally)
• Fever or current illness at the time of testing
• History of cardiovascular, metabolic, or respiratory disease
• A family member died for no apparent reason, had a heart attack, died from heart problems, or sudden death before the age of 50
• Current musculoskeletal injury that limits their physical activity
• Currently taking a medication that is known to influence body temperature (amphetamines, antihypertensives, anticholinergics, acetaminophen, diuretics, NSAIDs, aspirin)
• Are a female. Due to the internal body temperature gradient that accompanies the menstrual cycle, inclusion of females may not provide the most controlled internal body temperature data for this study.
• Have a history of heat related illness
• Throat or gastroesophageal diseases including gastroesophageal reflux disease (aka, GERD) or difficulty swallowing
• Have any allergies or adverse reactions to the cold (e.g. Cold Urticaria, Raynauds Phenomenon/Disease, or cryoglobulinaemia)
• Any COVID-19 related symptoms including fever, cough, shortness of breath or difficulty breathing, gastrointestinal discomfort (nausea, vomiting, and/or diarrhea), repeated shaking with chills, muscle pain (unrelated to exercise), headache, sore throat, new loss of taste or smell, congestion or runny nose.
• Participant with clinical diagnosis of COVID-19 infection or positive result on a COVID-19 test due to concern about cardiac complications.