Effects of Yoga on Heart Rate and Heart Rate Variability Responses to Stress

NCT04897230 | Completed

• 1 other identifier: KMUH-IRB-20120375
• Study Type: interventional
• Target: 44
• Locations: 0 countries
• Sites: N/A

Brief Summary

Introduction: Yoga has been shown to reduce stress and have benefits for a number of stress-related disorders. However, the effects of an acute bout of yoga practice on cardiac autonomic response to and recovery from stress remain unclear. This study aimed to examine the effect of a single bout of yoga on heart rate (HR) and heart rate variability (HRV) response to and recovery from mental stress. Materials and Methods: This study was conducted with a randomized, counterbalanced, crossover design. A total of 44 participants completed two sessions (yoga and video watching (VW)) in randomly assigned order. After each condition, participants underwent a Stroop task and mental arithmetic task. Electrocardiogram was measured and HR and HRV for resting, each condition, and the stress and recovery periods were analyzed.

Conditions

Cardiovascular Reactivity to Stress

Keywords

yoga, mental stress, cardiac autonomic function, stress response

Outcome Measures

Primary Outcomes (2)

• Heart Rate

  Heart rate was derived from continuous heart rate recording, at a sampling rate of 1024 Hz, using an electrocardiogram (ECG) system

  up to 5 minutes

• Heart Rate Variability

  Heart rate variability was derived from continuous heart rate recording, at a sampling rate of 1024 Hz, using an electrocardiogram (ECG) system

  up to 5 minutes

Study Arms (2)

Hatha Yoga Condition

ACTIVE COMPARATOR

An experienced yoga instructor led the 30 minutes yoga condition session which consisted of 5 minutes warm up, 5 minutes breathing exercises, and 20 minutes yoga poses practice. The yoga props were used according to each participant's particular body type and needs to help he/she achieve precise yoga postures safely and comfortably.

Behavioral: Hatha Yoga

Control Condition

PLACEBO COMPARATOR

Participants in the control condition were watching a neutral video on a television.

Behavioral: Video Watching

Interventions

Hatha Yoga BEHAVIORAL

The yoga poses were chosen for providing a restorative session based on their purported relationship to restorative effects to best promote cardiac autonomic recovery from mental stress.

Hatha Yoga Condition

Video Watching BEHAVIORAL

The video was about the history of the Earth which encompasses the development of the planet Earth from its formation to the present day.

Control Condition

Eligibility Criteria

• Age: 20 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• aged between 20 and 40 years old
• a body mass index (BMI) between 18.5 and 30
• being sedentary

You may not qualify if:

• Electrocardiogram (ECG) abnormalities (e.g., arrhythmia, atrioventricular blocks)
• history of cardiovascular disease, diabetes, or renal disease
• contraindications for exercise (e.g., orthopedic problems)
• involvement in any yoga practice
• being pregnant or nursing
• use of tobacco products or medications that may affect cardiovascular function

Sponsors & Collaborators

• Kaohsiung Medical University Chung-Ho Memorial Hospital: lead

MeSH Terms

Conditions

Stress, Psychological; Fractures, Stress

Condition Hierarchy (Ancestors)

Behavioral Symptoms; Behavior; Fractures, Bone; Wounds and Injuries

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 12, 2021
• First Posted: May 21, 2021
• Study Start: September 1, 2013
• Primary Completion: March 30, 2015
• Study Completion: March 30, 2015
• Last Updated: May 21, 2021

Record last verified: 2021-05

Data Sharing

• IPD Sharing: Will not share