Mitigating Heat-induced Physiological Strain and Discomfort in Older Adults Via Lower Limb Immersion and Neck Cooling
Hyperthermia, Weather; Heat, Heat Stress
About this trial
This is an interventional basic science trial for Hyperthermia focused on measuring Heat wave, Cooling intervention, Heat strain, Cardiovascular strain, Heat and health protection, Extreme heat events
Eligibility Criteria
Inclusion Criteria: Male or female adults. Aged 65-85 years. Non-smoking. English or French speaking. Ability to provide informed consent. Exclusion Criteria: Physical restriction (e.g., due to disease: intermittent claudication, renal impairment, active proliferative retinopathy, unstable cardiac or pulmonary disease, disabling stroke, severe arthritis, etc.). Use of or changes in medication judged by the patient or investigators to make participation in this study inadvisable (e.g., medications increasing risk of heat-related illness; beta blockers, anticholinergics, etc.) Cardiac abnormalities identified via 12-lead ECG during an incremental exercise test to volitional fatigue (performed for all participants). Peak aerobic capacity (VO2peak), as measured during an incremental exercise test to volitional fatigue, exceeding the 50th percentile of age- and sex-specific normative values published by the American College of Sports Medicine (ACSM).
Sites / Locations
- University of Ottawa
Arms of the Study
Arm 1
Arm 2
Arm 3
Active Comparator
Experimental
Experimental
No cooling intervention (control)
Lower limb immersion
Lower limb immersion + neck cooling
Adults aged 65-85 years with or without type 2 diabetes and/or hypertension.
Adults aged 65-85 years with or without type 2 diabetes and/or hypertension.
Adults aged 65-85 years with or without type 2 diabetes and/or hypertension.