The Effects of Hot Yoga on Vascular Function

Not Applicable

Completed

• Conditions: Elevated Blood Pressure; Hypertension
• Interventions: Behavioral: Hot Yoga

• Registration Number: NCT03993184
• Lead Sponsor: Texas State University

Brief Summary

This study will examine the effects of a 12 week hot yoga intervention on vascular health in adults between the ages of 20 and 65. The investigators are seeking individuals with slightly elevated blood pressure and stage I hypertension who are not currently taking blood pressure medications or exercising regularly. Participants will receive 12 weeks of free yoga for their participation.

Detailed Description

This study will examine the effects of a 12 week hot yoga intervention on vascular health by assessing changes of pre-intervention and post-intervention measurements in ambulatory blood pressure, endothelial function, and arterial stiffness in adults between the ages of 20 and 65. The investigators are seeking individuals with elevated blood pressure and stage I hypertension who are not currently taking blood pressure medications or exercising regularly. Participants will receive 12 weeks of free yoga for their participation.

Study Timeline

• Study First Submitted: 2018-03-06
• Study Start: 2018-04-17
• Study First Submitted QC: 2019-06-19
• Study First Posted: 2019-06-20
• Status Verified: 2021-03
• Primary Completion: 2021-12-01
• Study Completion: 2021-12-01
• Last Update Submitted: 2022-10-25
• Last Update Posted: 2022-10-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• Elevated blood pressure or stage I hypertension;
• sedentary (not currently exercising regularly);
• not currently taking blood pressure medications.

Exclusion Criteria

• Pregnancy;
• renal disease;
• prior heart attack;
• known coronary artery disease;
• history of stroke,
• heart failure, cardiac arrhythmias or chronic obstructive pulmonary disease (COPD);
• recent chest pain;
• heat intolerance;
• body mass index of 40 or more.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
60-minute Hot Yoga Classes	Hot Yoga	This group will complete 3, 60-minute hot yoga classes weekly for 12 weeks.
90-minute Hot Yoga Classes	Hot Yoga	This group will complete 3, 90-minute hot yoga classes weekly for 12 weeks.

Primary Outcome Measures

Name	Time	Method
Averages in ambulatory blood pressure and vascular function	24 hours	Blood pressure monitoring using an arm cuff for one full day before and after the intervention

Secondary Outcome Measures

Name	Time	Method
Brachial artery endothelial function	15 minutes	Ultrasound imaging of the upper arm before and after 5 minutes of lower arm cuff inflation (this cuff similar to a blood pressure cuff but smaller) before and after the intervention. Arterial diameter images will be analyzed for baseline and post-cuff release diameters and flow-mediated dilation will be quantified as the percentage change in arterial diameter from baseline.
Perceived stress	5 minutes	"Perceived Stress Scale" questionnaire will be filled out by participant before and after the intervention in order to asses current perception of stress of daily living. 10 total questions, scaled from 0 to 4, 4 being the most often a participant felt stress and carries a weight of 5 and 0 holds a weight of 1. Question 4, 5, 7, and 8 have reversed values where 0 is the most heavily weighted and 4 is the least. The total is added up upon completion of each test and can be compared to before and after values.
Arterial Stiffness	10 minutes	Tonometry readings of the carotid and femoral artery pulses assessing pulse wave velocity before and after the intervention. Pulse wave velocity will be determined by dividing the distance traveled in millimeters by the time delay between the initiations of the carotid and femoral pulse waveforms in seconds.

Trial Locations

Locations (1)

Texas State University; 🇺🇸 San Marcos, Texas, United States