D′ Balance Simulator · London, 12 Aug 2017 · Kirby et al. (2021) J Appl Physiol · Splits: IAAF SEIKO
D′b > 0 — reserve available
D′b < 0 — tank empty
D′b < 30m — critical (pulse ring)
CS = aerobic threshold speed (m/s)
D′ = total anaerobic capacity (m)
2017 IAAF Worlds · Men's 5000m