Cardiovascular Reactivity to Stress
Conditions
Keywords
yoga, mental stress, cardiac autonomic function, stress response
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.
Interventions
BEHAVIORALHatha Yoga
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.
BEHAVIORALVideo Watching
The video was about the history of the Earth which encompasses the development of the planet Earth from its formation to the present day.
Sponsors
Kaohsiung Medical University Chung-Ho Memorial Hospital
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
20 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* aged between 20 and 40 years old * a body mass index (BMI) between 18.5 and 30 * being sedentary
Exclusion criteria
* 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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Heart Rate | up to 5 minutes | Heart rate was derived from continuous heart rate recording, at a sampling rate of 1024 Hz, using an electrocardiogram (ECG) system |
| Heart Rate Variability | up to 5 minutes | Heart rate variability was derived from continuous heart rate recording, at a sampling rate of 1024 Hz, using an electrocardiogram (ECG) system |
Outcome results
None listed