In A Nutshell
- Boosting walking speed by 14 steps per minute enhances the likelihood of functional improvement in frail older adults.
- Participants who walked at their maximum safe speed were almost twice as likely to show improvement in a standard 6-minute walking test compared to those walking leisurely.
- The observed benefits were tied to individual speed increases rather than merely participation in a high-intensity exercise group.
- These findings indicate that using simple devices to track walking speed could help customize exercise plans for seniors.
CHICAGO — It might seem simple to say that walking faster is good for health, but for many older Americans facing physical decline, those extra steps can really be crucial. A study involving 102 seniors in Chicago-area retirement communities found that increasing walking speed by just 14 steps per minute can significantly enhance physical function in individuals who are frail or on the verge of being frail. Over four months, 65% of seniors who aimed to walk “as fast as they safely could” reported meaningful improvements in walking longer distances, while only 39% of those who walked at a relaxed pace saw similar benefits.
For example, if someone usually walks at 80 steps per minute and increases that to 94, they could notice tangible improvements in their daily activities—whether it’s grocery shopping, climbing stairs, or just maintaining independence.
The Growing Problem of Frailty
Frailty affects about 15% of Americans over the age of 65, and it’s more than just normal aging. This condition includes things like unintentional weight loss, fatigue, muscle weakness, sluggish movement, and low physical activity. Unlike typical age-related changes, frailty can lead to a perilous cycle: a person becomes less active, which makes them weaker, leading to even less activity.
This situation considerably heightens the chances of falls, disability, hospitalizations, and even mortality. As the population ages rapidly, it’s become increasingly urgent to find effective interventions for those who are particularly vulnerable to these issues.
Walking programs have shown potential by tackling several aspects of frailty at once. However, determining how to tailor these exercises—like how often, how long, and at what intensity people should walk—has proven challenging, especially for older adults with heart issues or those on medications that alter their responses to exercise.
Why Counting Steps Works Better Than Heart Rate
Older adults often struggle with traditional methods for gauging exercise intensity. For instance, heart rate monitors can be unreliable for those on medications like beta blockers, while subjective exertion ratings can vary widely among seniors.
On the other hand, counting steps provides a clearer, more objective measure. People can easily track this using a smartphone or a basic fitness tracker. Research indicates that reaching 100 steps per minute generally correlates with moderate exercise intensity.
The Chicago study, led by Dr. Daniel Rubin from the University of Chicago, outfitted participants with precise accelerometers worn on their thighs during the workouts. These devices recorded every step taken, allowing for exact measurements of walking speeds throughout the four-month period.
The Experiment: Fast Walkers vs. Comfortable Pacers
The participants, who were nearly 79 years old on average and from varied backgrounds across 14 retirement communities, all exhibited signs of frailty according to standard assessments. The majority, about 80%, were women.
Both groups followed an identical schedule: three sessions a week, each lasting 45 minutes, with 15 minutes for warm-up and cool-down and 30 minutes for walking. The key difference was in the instructions. The casual walkers were told to keep a relaxed pace, while the high-intensity group aimed to walk “as fast as they safely could.” Trained staff supervised all sessions to ensure safety and provide encouragement.
At the end of the program, the results were clear. The high-intensity group averaged 100 steps per minute, whereas the casual walkers averaged only 77. Crucially, the faster walkers had significantly better results on a standard fitness test called the 6-minute walk test.
This test gauges how far someone can walk in six minutes, serving as a strong indicator of overall physical capability and independence. For frail older people, improving by 30 meters or more in this test is clinically significant, signaling real-world capabilities in daily tasks.
The analysis showed that participants who increased their walking speed by 14 steps per minute from their comfortable baseline were far more likely to meet this threshold for improvement. Interestingly, when looking exclusively at the individual speed changes, the benefits of being in the “high-intensity” group seemed to vanish, showing that the actual speed increase, not just the group designation, drove the positive outcomes.
Overall, there were no serious injuries reported, and participants were allowed to take breaks as needed during sessions, which didn’t count towards their 30-minute walking target.
This research, published in PLOS One, offers immediate implications for assisted living facilities, community centers, and healthcare providers working with older adults. Instead of generic exercise programs, facilities could implement individualized walking speed targets based on each person’s comfortable pace and use simple activity trackers to monitor progress.
For the millions of older adults experiencing declining physical function, this study brings both hope and a practical guide. Maintaining independence might boil down to something as straightforward as adding 14 extra steps per minute to routine walks—a remarkably achievable goal that could significantly influence aging in America.
Paper Summary
Methodology
This study analyzed data from a randomized controlled trial involving 102 prefrail and frail older adults (average age 79) living in 14 Chicago-area retirement communities. Participants were divided into either a casual walking group or a high-intensity walking group. Both groups completed 48 exercise sessions over four months, with each session consisting of 45 minutes including warm-up and cool-down, and 30 minutes dedicated to walking. The casual group was instructed to maintain a comfortable pace, while the high-intensity group walked “as fast as you safely can.” All participants wore accelerometers to accurately track steps per minute. The primary outcome was an increase of at least 30 meters in the 6-minute walk test.
Results
The high-intensity group achieved a higher average of steps per minute than the casual group (100 vs. 77) during the final phase. Notably, 65% of those in the high-intensity group demonstrated meaningful improvements in their 6-minute walk test compared to 39% in the casual group. The study found that increasing walking speed by 14 steps per minute significantly boosted the odds of functional improvement, and once individual speed changes were considered, the group assignment’s impact disappeared.
Limitations
The study involved motivated participants from retirement communities, which may not reflect the broader population of frail older adults. Sessions were supervised by research staff providing encouragement, so it’s uncertain if unsupervised individuals would achieve similar results. The baseline walking distance of around 250 meters was significantly below community norms, indicating the participants’ impaired functional capacity. The authors noted the potential for selection bias given all subjects were motivated volunteers.
Funding and Disclosures
This research received funding from the National Institutes of Health, National Institute on Aging. There were no reported competing interests, and the funders did not influence study design, data collection, analysis, or manuscript preparation.
Publication Information
“Walking cadence as a measure of activity intensity and impact on functional capacity for prefrail and frail older adults” was published in PLOS One on July 16, 2025. The research team included Daniel S. Rubin and colleagues from several institutions, such as the University of Chicago and University of Michigan. The original clinical trial was registered as NCT03654807 and conducted from November 2017 to April 2022.
