The original research was published here: https://bjsm.bmj.com/content/early/2019/09/25/bjsports-2018-100493 https://bjsm.bmj.com/content/early/2019/09/25/bjspo

The original research was published here: https://bjsm.bmj.com/content/early/2019/09/25/bjsports-2018-100493 https://bjsm.bmj.com/content/early/2019/09/25/bjsports-2018-...