Health Behavior, Quality of Life
Conditions
Keywords
Yoga, Electroencephalography, Heart rate variability, Breathing Exercises, Quality of life
Brief summary
Since yoga breathing exercises are traditionally used to tranquilize the mind, and have a well-known positive effect on the cardiovascular system, it is our hypothesis that a respiratory yoga exercise named bhastrika pranayama may have positive effects on heart rate variability, electroencephalography, quality of life and salivary cortisol (stress hormone).
Detailed description
The effects of yoga interventions on heart rate variability have been previously shown in our laboratory, having its efficacy in improving autonomic heart modulation of hypertensives and elderly subjets proven. However, there is a lack of data addressing the effects of such interventions on EEG patterns of health fit male subjects, as well as there are no study investigating if there is a relationship between heart autonomic modulation changes and EEG patterns. Thus, the aim of this study was to investigate the effects of 1 month respiratory yoga training on heart rate variability, EEG, salivary cortisol and quality of life of health fit male subjets.
Interventions
BEHAVIORAL1 month respiratory training
Bhastrika yoga respiratory training: 30 kapalabhati and 1 surya bedhana form 1 bhastrika
BEHAVIORAL1 month waiting period
waiting or detraining period
Sponsors
Conselho Nacional de Desenvolvimento Científico e Tecnológico
University of Sao Paulo
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
SUPPORTIVE_CARE
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
25 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
* Young adults; * Physically fit (engaged in physical activity at least 2-3 times a week); * Non athletes; * Possibility to follow protocol agenda.
Exclusion criteria
* Epileptic events in previous 5 years; * Chronic allergic rhinitis, with airway occlusion; * Oral bronchodilator usage; * Beta blocker user; * Any diagnosed cardiac rhythm alteration at rest; * Cerebral dysrhythmia; * Previous training in respiratory yoga exercises.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes from baseline electroencephalography measures of brain waves at 1 and 2 months | baseline, one month, two months | 64 active electrodes electroencephalography |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| frequency domain heart rate variability | study entry, one month, two months | R-R interval autoregressive spectral analysis |
| salivary cortisol | study entry, one month, two months | — |
| quality of life | study entry, one month, two months | quality of life will be addressed by the World Health Organization Questionaire of Quality of Life in its brief form |
Countries
Brazil
Outcome results
None listed