Woman Walking (IMAGE) University of Jyväskylä - Jyväskylän yliopisto Caption Commercial activity monitors may underestimate the exertion level of older adults' activity. Credit University of Jyväskylä. Usage Restrictions Photo to be used with articles related to this press release only. University of Jyväskylä has to mentioned. 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.