Unlock Longevity: New Study Shows How Physical Activity Extends Life
- A new study in the British Journal of Sports Medicine shows that physical activity (PA) boosts life expectancy, especially for those who are less active.
- They referenced 2017 statistics from the National Center for Health Statistics and the 2003–2006 National Health and Nutrition Examination Survey (NHANES).
- This study emphasizes the strong link between physical activity and longer life, especially for the least active individuals.
Walking Your Way to a Longer Life: Key Findings from Recent Research
A new study in the British Journal of Sports Medicine shows that physical activity (PA) boosts life expectancy, especially for those who are less active. Low PA contributes to non-communicable diseases and early deaths worldwide. Increasing PA reduces the risk of death for everyone, but the greatest benefits are for people with low activity levels.
Study Overview
The researchers used health data from the U.S. to analyze the effects of different PA levels on mortality. They referenced 2017 statistics from the National Center for Health Statistics and the 2003–2006 National Health and Nutrition Examination Survey (NHANES). This survey used accelerometers to measure activity accurately.
Key Findings
- The average life expectancy in the U.S. was 78.6 years in 2017.
- If all individuals aged 40 and older were as inactive as the least active quarter, life expectancy would drop to 73.0 years, a decline of 5.8 years.
- Increasing PA to levels seen in the second quartile (Q2) raises life expectancy to 79.2 years, while the third quartile (Q3) extends it to 82.0 years. Those in the most active quartile (Q4) could expect to live to 83.7 years, an increase of 5.3 years.
- To match the activity level of Q4, individuals in Q1 would need to walk an extra 111.2 minutes daily, potentially adding up to 10.9 years to their life.
- Every additional hour of walking can increase life by about 169.1 minutes.
- The gains from walking lifestyle vary by quartile:
- Q1 to Q2: Extra 28.5 minutes needed daily.
- Q2 to Q3: An additional 27.8 minutes.
- Q3 to Q4: Extra 55 minutes required.
Conclusion
This study emphasizes the strong link between physical activity and longer life, especially for the least active individuals. Simple changes, like walking for an hour each day, can significantly increase life expectancy. The researchers urge investment in environments that promote physical activity, such as public spaces and improved transit options, to benefit community health.