Brisk Walking May Reverse Frailty in Older Adults, Study Finds

A recent study published in the journal PLOS ONE indicates that walking at a faster pace may help reverse frailty, a condition often misunderstood as merely a natural part of aging. Frailty is a clinically recognized syndrome that significantly increases the risk of health deterioration, including complications following surgery and rapid decline after infections or falls. Key indicators include slow walking speed and taking longer than 13 seconds to complete a “timed up-and-go” test, which involves rising from a chair, walking a short distance, and returning to sit.

Researchers found that while both leisurely and vigorous walking offered benefits, participants who maintained a high intensity were more likely to see improvements in their frailty scores. Nearly 70% of those in the high-intensity group improved in at least one category, compared to 46% in the casual walking group.

Margaret Danilovich, a physical therapist at Northwestern University and co-author of the study, emphasized that the common assumption that frail individuals should limit their activity is a miscalculation. Her team conducted the trial across 14 retirement homes, where research assistants coached residents through weekly walking sessions. The high-intensity groups were encouraged to reach a vigorous level of activity, exceeding 70% of their maximum heart rate, with assistants providing verbal cues to maintain speed if participants slowed down.

Despite the positive outcomes, Dr. Kenneth Rockwood of Dalhousie University noted that higher dropout rates in the intense walking group could make it difficult to generalize the findings to the broader older population. However, he praised the effort, stating that more research focused on preventing frailty is urgently needed.

Dr. Sara Espinoza, a geriatrician at Cedars-Sinai Medical Center, highlighted that the study’s safety profile is notable, with only one fall recorded during the entire trial. This challenges the perception that high-intensity exercise is dangerous for older adults. Nevertheless, Espinoza pointed out significant barriers to real-world application, such as healthcare systems that often do not reimburse for high-intensity exercise training typically prescribed through physical therapy.

Looking ahead, the researchers plan to expand their work to include healthy older adults using smartwatches. The goal is to determine the most effective ways to prompt faster walking via wearable technology, potentially making these interventions accessible to anyone with a wrist-worn device.