Healthy Clinical Trial
Official title:
Cannabidiol Effects on Cardiovascular System and Exercise Responses
To identify the autonomic effects of recreationally-relevant doses of cannabidiol (CBD) in an older population, and to evaluate the effect of CBD on exercise performance and recovery.
Heart rate variability (HRV) analysis is a common method used to evaluate the function of the autonomic nervous system. While heart rate is the number of heart beats per minute, HRV is the fluctuation of the time intervals between those beats (interbeat intervals). If the interbeat intervals are too similar, this is an indication of an unhealthy heart. A major influence on heart rate (and thus interbeat interval), is the autonomic nervous system which is divided into two branches: sympathetic and parasympathetic. HRV represents the balance between both systems, with higher HRV being associated with greater parasympathetic activity, and lower HRV with greater sympathetic activity. While there is no optimal level of HRV, a higher HRV is associated with reduced stress and good health, and a lower HRV is associated with chronic diseases and cardiovascular risk. The current study will evaluate the effect of recreationally-relevant doses of CBD (25-200mg) on resting HRV in older adults (aims 1&2). Investigators will also look at the effects of CBD on cardiovascular fitness by having participants complete a maximum graded exercise test under the influence of a placebo and again after ingesting a single dose of CBD (aims 3&4). ;
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