Mamils Cycling Once Per Month (IMAGE) University of Sydney Caption The proportion of middle aged men aged 45-65 years who cycled at least once in the previous year nearly doubled from 11 percent (2002-04) to 20.8 percent (2016) Credit MJA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.