Table 1. Participant characteristics according to increase in ultra-endurance exercise (IUEE) groupa

From

Changes in Physical Activity across the Lifetime of Current Ultra-Endurance Exercisers

Karen Birkenhead, Geoff Lovell, Susan I. Barr, Colin Solomon

Journal of Physical Activity Research. 2018, 3(1), 11-19 doi:10.12691/jpar-3-1-3