Examining the Circadian Timing Effects of the Hypotensive Response to Exercise
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-39
SponsorFreda Patterson
About this trial
The goal of this study is to learn how exercise timing affects blood pressure in adults with elevated or high blood pressure. Exercise can influence the body's natural 24-hour rhythms, including blood pressure patterns. A single exercise session can lower blood pressure for up to 24 hours, but it is not fully understood how the time-of-day for exercise affects this response. The main question this study aims to answer is:
• When the same participant exercises at different times of day (morning, afternoon, or evening), how does this affect the participant's blood pressure over the next 24 hours?
Participants will:
* Undergo an in-lab assessment of individual biological rhythm that will indicate the clock-time for an individual's biological night * Complete 3 supervised treadmill exercise sessions
* 1 in the biological morning (biological night + 10 hours) * 1 in the biological afternoon (biological night + 15 hours) * 1 in the biological evening (biological night + 20 hours) * Complete a 24-hour blood pressure assessment before and after each exercise session
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
18-39 Years old
Resting blood pressure greater than or equal to 120/80 mmHg or less than 140/90 mmHg
Disqualifiers
Diagnosis or history of chronic or autoimmune disease (i.e., cardiovascular, metabolic, renal, endocrine, cancer)
Diagnosis or history of sleep disorder (i.e., obstructive sleep apnea, insomnia, restless leg syndrome)
Alcohol or drug dependence
Elevated risk for sleep disorders
Trial design
Design model
Crossover
Treatments tested in this trial
Exercise
BehavioralA single standardized, in-lab, 30-minute monitored treadmill exercise session
Treatment groups
30 Participants
are divided into 3 treatment groupsGroup A: MorningExperimental treatment 1 intervention
Group B: AfternoonExperimental treatment 1 intervention
Group C: EveningExperimental treatment 1 intervention
Trial outcomes
Primary outcomes
1
Average daytime systolic blood pressure
Change in average daytime systolic blood pressure (post-exercise - pre-exercise)
Time frame
24-hoursSponsors and contacts
Click on the lead sponsor to view all of their trials.
Freda Patterson
Lead sponsor
University of Delaware
Sponsor institution
Source ClinicalTrials.gov