"Attribution retraining" may be the key to convincing seniors that advanced age is no excuse for being physically unfit, according to American researchers.

Scientists at the University of California, Los Angeles used the technique, which changes a person's perceptions and patterns, to boost seniors' activity levels.

"We can teach older adults to get rid of those old beliefs that becoming sedentary is just a normal part of growing older," Dr. Catherine Sarkisian, assistant professor of geriatrics and the study's lead author, said in a release.

Four times a week, the study's 46 participants — all over the age of 65 — were taught in hour long sessions that activity can continue in old age.

The seniors then participated in exercise classes of the same duration and frequency. The classes focused on exercises that increased stamina, flexibility and strength.

During the seven-week study, the participants were fitted with electronic pedometers that counted how many steps they walked each week. They also filled out surveys that were meant to determine their views on aging and fitness.

Over the course of the pilot program, the people involved in the study increased the number of steps they took weekly from a mean of 24,749 to 30,707, an increase of 24 per cent.

The study was published online Thursday in the Journal of the American Geriatrics Society.

The study's participants also reported higher energy levels, less pain and an improvement in the quality of their sleep.

As for their views on exercise and aging, there was a 30 per cent increase in positive feelings towards aging and exercise, the researchers found.