New research has shown that for those aged 70 and over, any movement can increase their life span.
Published in the British Journal of Sports Medicine, an observational study of more than 1,000 men aged 71 to 92 found there was a 15 per cent reduction in all-cause mortality risk for every thousand steps a day, no matter the intensity, .
Emmanuel Stamatakis, Associate Professor of Exercise, Health, and Physical Activity at the University of Sydney, says for this particular demographic the study refutes the idea that activity must be done it at least 10 minute bouts.
"Importantly this showed that it did not matter how participants accumulated their physical activity," Professor Stamatakis said.
"The key public health message from this study is that any movement in this age group matters," he told AAP.
Researchers at University College London tracked the activity levels of more than 1,181 men from the British Regional Heart Study through the use of wearable monitors for five years.
The average age of the men was 78 and all were without pre-existing cardiovascular disease.
The researchers concluded "all activities" of light intensity and upwards was associated with a reduction in overall mortality risk.
Each 30 minute increase in light physical activity per day was associated with a 17 per cent reduction in mortality, the study found.
The more vigorous the exercise the more substantial the reduction in mortality risk.
While high intensity exercise is not realistic for many older people, one thousand steps per day should is achievable for pretty much everyone with the exception of those with serious functional limitations, says Prof Stamatakis.
"It doesn't have to be in long bouts of 10 minutes or more, any movement seems to matter, any steps we are making seem to make a difference, including light intensity," he said.