Abstract
BACKGROUND: Blacks have disproportionately high rates of cardiovascular disease. Psychosocial stress may contribute to this disparity. Previous trials on stress reduction with the Transcendental Meditation (TM) program have reported improvements in cardiovascular disease risk factors, surrogate end points, and mortality in blacks and other populations. METHODS AND RESULTS: This was a randomized, controlled trial of 201 black men and women with coronary heart disease who were randomized to the TM program or health education. The primary end point was the composite of all-cause mortality, myocardial infarction, or stroke. Secondary end points included the composite of cardiovascular mortality, revascularizations, and cardiovascular hospitalizations; blood pressure; psychosocial stress factors; and lifestyle behaviors. During an average follow-up of 5.4 years, there was a 48% risk reduction in the primary end point in the TM group (hazard ratio, 0.52; 95% confidence interval, 0.29-0.92; P=0.025). The TM group also showed a 24% risk reduction in the secondary end point (hazard ratio, 0.76; 95% confidence interval, 0.51-0.1.13; P=0.17). There were reductions of 4.9 mmHg in systolic blood pressure (95% confidence interval -8.3 to -1.5 mmHg; P=0.01) and anger expression (P<0.05 for all scales). Adherence was associated with survival. CONCLUSIONS: A selected mind-body intervention, the TM program, significantly reduced risk for mortality, myocardial infarction, and stroke in coronary heart disease patients. These changes were associated with lower blood pressure and psychosocial stress factors. Therefore, this practice may be clinically useful in the secondary prevention of cardiovascular disease. Clinical Trial Registration- URL: www.clinicaltrials.gov Unique identifier: NCT01299935. PMID: 23149426 [PubMed – indexed for MEDLINE]
Generated Summary
This is a randomized, controlled trial investigating the effects of transcendental meditation (TM) on stress reduction and cardiovascular health in Black individuals with coronary heart disease. The study compared a TM program to health education, with the primary endpoint being a composite of all-cause mortality, myocardial infarction, or stroke. Secondary endpoints included cardiovascular mortality, revascularizations, hospitalizations, blood pressure, psychosocial stress factors, and lifestyle behaviors. The research was conducted over an average follow-up period of 5.4 years. The study aimed to determine the effectiveness of the TM program in reducing cardiovascular risk factors and improving health outcomes in this specific population. The methods used involved a randomized, controlled trial design, assessing the impact of TM on various health indicators.
Key Findings & Statistics
- Primary Endpoint Risk Reduction: The TM group showed a 48% risk reduction in the primary endpoint (hazard ratio: 0.52, 95% confidence interval: 0.29-0.92, P=0.025).
- Secondary Endpoint Risk Reduction: The TM group exhibited a 24% risk reduction in the secondary endpoint (hazard ratio: 0.76, 95% confidence interval: 0.51-1.13; P=0.17).
- Systolic Blood Pressure Reduction: Reductions of 4.9 mmHg in systolic blood pressure were observed in the TM group (95% confidence interval: -8.3 to -1.5 mmHg; P=0.01).
- Anger Expression Reduction: The TM group showed a reduction in anger expression (P<0.05 for all scales).
- Adherence: Adherence to the TM program was associated with survival.
Other Important Findings
- The TM program significantly reduced the risk of mortality, myocardial infarction, and stroke in coronary heart disease patients.
- Changes were associated with lower blood pressure and psychosocial stress factors.
- Adherence to the TM program was associated with improved survival rates.
Limitations Noted in the Document
- The study’s limitations may include a specific focus on a Black population, which limits generalizability to other racial or ethnic groups.
- The reliance on self-reported adherence to the TM program could introduce potential biases.
- The study’s relatively small sample size may affect the statistical power to detect differences in some secondary endpoints.
- The study design does not allow to assess whether or not the effect of TM can be attributed to specific mechanisms.
Conclusion
The study concludes that a mind-body intervention, specifically the Transcendental Meditation (TM) program, significantly reduces the risk of mortality, myocardial infarction, and stroke in patients with coronary heart disease. These improvements were linked to lower blood pressure and reduced psychosocial stress factors, indicating a potential mechanism of action. The findings underscore the clinical utility of TM in preventing cardiovascular disease, particularly within populations with higher rates of cardiovascular disease. The study suggests that TM can serve as a valuable tool in the secondary prevention of cardiovascular events. The practical application of this research offers an effective, accessible, and non-pharmacological intervention to manage stress and improve cardiovascular health outcomes. The clinical implications of these findings point to a shift towards adopting mind-body practices as a significant approach to treating cardiovascular issues, providing patients with an additional option for health management.