A recent study from the United Kingdom suggests that the duration of a walk, rather than simply the number of steps taken, may play a more significant role in supporting heart health. This research adds to ongoing discussions about how best to measure physical activity for optimal health benefits.
The idea that 10,000 steps per day is the ideal goal has been widely promoted. However, this figure originated from a Japanese advertising campaign in 1965 for a pedometer and not from scientific evidence. Over time, studies have both supported and questioned this target.
In the new study, researchers analyzed two years of data from 33,560 healthy adults who participated in the U.K. Biobank project. These participants averaged 62 years old and walked at least 8,000 steps daily while wearing fitness trackers for three to seven days. The researchers examined not only step counts but also categorized walks by their duration.
They found that individuals whose walks lasted about 15 minutes had a lower risk of developing cardiovascular disease compared to those who accumulated their steps through shorter walks. Additionally, people who took longer walks showed a lower rate of death from any cause. Since all participants walked at least 8,000 steps per day, researchers concluded that walk duration was the main factor influencing these differences in health outcomes.
The study suggests that walking for longer periods allows the body enough time to transition into exercise mode. During this process, heart rate increases, blood vessels expand, and muscles begin using fuel efficiently. These changes trigger metabolic and anti-inflammatory effects that can help protect the heart and circulatory system.
“Steps do matter, but duration may be even more important,” according to UCLA Health’s Ask the Doctors column. “By giving the body’s finely tuned systems time to warm up, the study suggests that the ordinary motion of walking has the potential to become a heart-protective habit.”
Walking remains an accessible form of exercise with many benefits including calorie burning, improved mood due to endorphin release, better balance and flexibility, blood sugar control, weight management, and cognitive support.
Questions can be sent to [email protected] or mailed to Ask the Doctors at UCLA Health Sciences Media Relations in Los Angeles.
