Effect of an office worksite-based yoga program on heart rate variability: a randomized controlled trial.
Study Goal
The researchers aimed to determine if a 10-week worksite-based yoga program, including Pranayama Breathing, could improve resting heart rate variability (HRV) and related physical and psychological parameters in sedentary office workers.
Results Summary
The study found that the yoga program, which included Pranayama Breathing, was designed to improve HRV (a marker of parasympathetic autonomic control) and overall health status, though specific results for Pranayama alone were not detailed in the abstract. The full effects will be measured post-intervention and at 6-month follow-up.
Population
Sedentary office workers
Effective Dosage
Three times per week during lunch hour (as part of a broader yoga program)
Duration
10 weeks
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
a 10-week, worksite-based yoga program delivered during lunch hour | increase | resting HRV and related physical and psychological parameters | sedentary office workers | - | can improve | #1 |
worksite-based yoga practice | neutral | HRV and physical and psychological health status | - | - | determine the effect of | #2 |
practical interventions, such as yoga | decrease | stress | - | - | mitigate | #3 |
practical interventions, such as yoga | increase | health status | - | - | enhance | #4 |
practical interventions, such as yoga | decrease | the risk of cardiovascular and metabolic diseases | - | - | reduce | #5 |
BACKGROUND: Chronic work-related stress is a significant and independent risk factor for cardiovascular and metabolic diseases and associated mortality, particularly when compounded by a sedentary work environment. Heart rate variability (HRV) provides an estimate of parasympathetic and sympathetic autonomic control, and can serve as a marker of physiological stress. Hatha yoga is a physically demanding practice that can help to reduce stress; however, time constraints incurred by work and family life may limit participation. The purpose of the present study is to determine if a 10-week, worksite-based yoga program delivered during lunch hour can improve resting HRV and related physical and psychological parameters in sedentary office workers. METHODS AND DESIGN: This is a parallel-arm RCT that will compare the outcomes of participants assigned to the experimental treatment group (yoga) to those assigned to a no-treatment control group. Participants randomized to the experimental condition will engage in a 10-week yoga program delivered at their place of work. The yoga sessions will be group-based, prescribed three times per week during lunch hour, and will be led by an experienced yoga instructor. The program will involve teaching beginner students safely and progressively over 10 weeks a yoga sequence that incorporates asanas (poses and postures), vinyasa (exercises), pranayama (breathing control) and meditation. The primary outcome of this study is the high frequency (HF) spectral power component of HRV (measured in absolute units; i.e. ms2), a measure of parasympathetic autonomic control. Secondary outcomes include additional frequency and time domains of HRV, and measures of physical functioning and psychological health status. Measures will be collected prior to and following the intervention period, and at 6 months follow-up to determine the effect of intervention withdrawal. DISCUSSION: This study will determine the effect of worksite-based yoga practice on HRV and physical and psychological health status. The findings may assist in implementing practical interventions, such as yoga, into the workplace to mitigate stress, enhance health status and reduce the risk of cardiovascular and metabolic diseases. TRIAL REGISTRATION: ACTRN12611000536965URL: http://www.anzctr.org.au/ACTRN12611000536965.aspx.