Results are preliminary
“This is an observational study, not an experiment, so it means causality cannot be presumed,” said Maria Fiatarone Singh, MD, a geriatrician with a focus on exercise physiology at the University of Sydney, in an interview. “In other words, it is possible that diseases resulting in mortality prevented people from walking rather than the other way around,” she noted. The only published experimental study on exercise and mortality in older adults was conducted by Dr. Fiatarone Singh and colleagues in Norway. In that study, published in the British Medical Journal in 2020, high-intensity training programs were associated with reduced all-cause mortality compared with inactive controls and individuals who engaged in moderate intensity exercise.
The current study “would have needed to control for many factors related to mortality, such as cardiovascular disease, hypertension, diabetes, malnutrition, and dementia to see what residual benefit might be related to walking,” Dr. Fiatarone Singh said.
“Although walking seems easy and safe, in fact people who are frail, sarcopenic, osteoporotic, or have fallen are recommended to do resistance and balance training rather than walking, and add walking later when they are able to do it safely,” she emphasized.
The study received no outside funding. The researchers had no financial conflicts to disclose. Dr. Fiatarone Singh had no financial conflicts to disclose.