Cardiovascular Reactivity to StressNCT04897230
Effects of Yoga on Heart Rate and Heart Rate Variability Responses to Stress
A study testing Hatha Yoga and Video Watching in people with Cardiovascular Reactivity to Stress, run by Kaohsiung Medical University Chung-Ho Memorial Hospital.
Trial 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. Read more about this study
- Who is it for?
- Ages 20 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Cardiovascular Reactivity to Stress
- What is being tested?
- Hatha Yoga and Video Watching
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 44 participants
- Where
- No sites listed yet
- Study dates
- 1 Sep 2013to 30 Mar 2015
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- aged between 20 and 40 years old
- a body mass index (BMI) between 18.5 and 30
- being sedentary
Who cannot join
- 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
About this study
Official title: The Effects of Acute Yoga Practice on Heart Rate and Heart Rate Variability Responses to Mental Stress
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
- Being tested
- Hatha Yoga, Video Watching
- Keywords
- yoga, mental stress, cardiac autonomic function, stress response
- Medical subject headings
- Stress, Psychological, Fractures, Stress
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Hatha YogaBehavioural
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.
Video WatchingBehavioural
The video was about the history of the Earth which encompasses the development of the planet Earth from its formation to the present day.
| Study group | Role | What they receive |
|---|---|---|
| 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. Receives: Behavioral: Hatha Yoga |
| Control Condition | Placebo comparator | Participants in the control condition were watching a neutral video on a television. Receives: Behavioral: Video Watching |
What is being measured
The primary outcome is the main question the study is designed to answer.
Heart Rate
Heart rate was derived from continuous heart rate recording, at a sampling rate of 1024 Hz, using an electrocardiogram (ECG) system
Measured: 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
Measured: up to 5 minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 May 2021
- Study start1 Sep 2013
- Primary completion30 Mar 2015
- Study completion30 Mar 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Cardiovascular Reactivity to StressStudies of the same condition, open and under way.
- More trials run by Kaohsiung Medical University Chung-Ho Memorial HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 44 participants (actual)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04897230
- Sponsor's protocol ID
- KMUH-IRB-20120375
- Status last verified
- May 2021
- First submitted
- 12 May 2021
- Last updated
- 21 May 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 May 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effects of Acute Yoga Practice on Heart Rate and Heart Rate Variability Responses to Mental Stress
- ClinicalTrials.gov ID
- NCT04897230
- Acronym / sponsor ID
- KMUH-IRB-20120375
- Conditions
- Cardiovascular Reactivity to Stress
- Keywords
- yoga, mental stress, cardiac autonomic function, stress response
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 44 participants (actual)
- Lead sponsor
- Kaohsiung Medical University Chung-Ho Memorial HospitalUniversity, hospital or other
- Study start
- 1 Sep 2013 (actual)
- Primary completion
- 30 Mar 2015 (actual)
- Study completion
- 30 Mar 2015 (actual)
- First posted
- 21 May 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Hatha Yoga Condition | Active comparator | Behavioral: Hatha YogaAn 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. |
| Control Condition | Placebo comparator | Behavioral: Video WatchingParticipants in the control condition were watching a neutral video on a television. |
Who may qualify
- Ages
- 20 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- aged between 20 and 40 years old
- a body mass index (BMI) between 18.5 and 30
- being sedentary
Key exclusion criteria (6 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Hatha YogaThe 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. | Behavioural | Hatha Yoga Condition |
| Video WatchingThe video was about the history of the Earth which encompasses the development of the planet Earth from its formation to the present day. | Behavioural | Control Condition |
Primary outcome
Heart Rate
Time frame: 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
Time frame: 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
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 May 2021.
- Individual participant dataSharing planned: No
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing Hatha Yoga and Video Watching in people with Cardiovascular Reactivity to Stress, run by Kaohsiung Medical University Chung-Ho Memorial Hospital.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 21 May 2021. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Heart Rate (time frame: up to 5 minutes). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 May 2021; AzTrials last refreshed its copy on 8 Nov 2026.