Compendium of Physical Activities: an update of activity codes and MET intensitiesMedicine and Science in Sports and Exercise - Tập 32 Số Supplement - Trang S498-S516 - 2000
Barbara E. Ainsworth, William L. Haskell, M. Whitt, Melinda L. Irwin, Ann M. Swartz, Scott J. Strath, W. L. O’Brien, David R. Bassett, Kathryn H. Schmitz, PATRICIA O. EMPLAINCOURT, David R. Jacobs, Arthur S. Leon