A study published in the British Journal of Sports Medicine found that American adults over the age of 40 could live an additional five years if they were as active as the top 25 percent most physically active Americans. For the least active 25 percent of this population, increasing their physical activity could potentially extend their lifespan by 11 years. The study utilized data from the National Health and Nutritional Examination Survey, as well as population and mortality data from the U.S. Census Bureau and the National Center for Health Statistics.
The study aimed to explore the relationship between physical activity and life expectancy, using a predictive model to estimate the impact of different levels of activity. It was found that if all Americans over the age of 40 matched the physical activity levels of the most active quarter, they could increase their average lifespan from 78.6 years to nearly 84 years. Similarly, if the least physically active quarter of this population matched these levels of movement, they could potentially add nearly 11 years to their life expectancy by walking for an additional two hours each day.
The study suggested that individuals in the lowest activity quartile saw the greatest gain in lifetime per hour of walking, with an hour’s walk potentially adding six hours to their life. While there are limitations to this study, as it is a hypothetical model based on observational research, the authors emphasized the potential benefits of creating living environments that encourage movement. Walkable neighborhoods with green spaces and active transport options could have a positive impact on Americans’ life expectancy.
Efforts to increase physical activity through environmental initiatives may have a significant effect on life expectancy in the American population. Encouraging individuals to engage in more movement, such as walking or other forms of exercise, could potentially extend their lifespan and improve overall health outcomes. More research is needed to further understand the relationship between physical activity and life expectancy, but these findings highlight the importance of adopting a more active lifestyle for improved health and longevity.
