Stu Phillips (IMAGE) McMaster University Caption Stu Phillips, senior author of the study and a professor in the Department of Kinesiology at McMaster University Credit Georgia Kirkos/McMaster University Usage Restrictions Editorial use only License Original 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.