Study Examines Impact of Light Exercise on Heart Disease Risk in Older Women

Cardiovascular Disease in Older Women

Cardiovascular disease (CVD) remains the leading cause of death globally, with heart attacks and coronary heart disease (CHD) particularly prevalent in women aged 85 and older. In contrast, men under 85 experience higher rates of heart attacks and CHD. Consequently, heart disease poses a significant concern for the medical community. Research indicates that older women who engage in regular physical activity are likely to experience a reduced risk of CHD and CVD.

Research Methodology

A study published in JAMA investigated this relationship by monitoring 5,861 women over the age of 63. Each participant wore an accelerometer on their right hip for a full week, with the devices calibrated for age. Throughout the study, participants reported any medical changes. The cohort included women of diverse backgrounds: 33.5% Black, 48.8% White, and 17.6% Hispanic. All participants had no history of stroke or heart attack, and the research was funded by the National Heart, Lung, and Blood Institute.

Key Findings

The study revealed a strong correlation between physical activity and a reduced risk of heart disease. Women engaging in moderate to vigorous physical activity experienced a 46% lower risk of CHD and a 31% reduced risk of overall heart disease. Additionally, those who participated in light physical activity had a 42% lower risk of CHD and a 22% reduced risk of overall heart disease.

Understanding Light Physical Activity

Light exercise does not exclusively involve gym workouts; everyday activities such as household chores—like folding laundry, washing dishes, dusting, or taking walks—also qualify as light physical activity. It is crucial for individuals to avoid prolonged periods of inactivity throughout the day.

Strengths of the Study

This research addressed a topic that has been relatively understudied, and its robustness was enhanced by the large participant pool and the use of accelerometers to objectively measure physical activity levels. Previous studies often relied on self-reported data or questionnaires, which can be less reliable.

Recommendations for Future Research

Further and longer-term studies are recommended to deepen the understanding of how physical activity may mitigate the risk of heart disease in both men and women.

Conclusion

It is strongly advised that older women incorporate regular light physical activity into their routines to help lower their risk of heart disease.

References

LaCroix, Andrea Z, et al. “Association of Light Physical Activity Measured by Accelerometry and Incidence of Coronary Heart Disease and Cardiovascular Disease in Older Women”. JAMA. 2019. 1-14. Online.
Light physical activity linked to lower risk of heart disease in older women. 2019, https://www.eurekalert.org/pub_releases/2019-03/nhla-lpa031419.php, assessed 21 Mar. 2019.