Extended Data Fig. 4: Efficiency versus stimulus phase for individual muscle fibre bundles from wildebeest and cows.
From: Remarkable muscles, remarkable locomotion in desert-dwelling wildebeest

a–f, Data from wildebeest. g–k, Data from cows. Relationship between stimulus phase and efficiency during three cycles of movement at 0.5 Hz for stimulus duty cycles (DC). Circle, DC = 0.4; square, DC = 0.3; triangle, DC = 0.2; diamond, DC = 0.1. Efficiency = power per rate of heat + work output. a, b, d, Data are from a different muscle fibre bundle each from a different wildebeest. c, Data are the average of the values shown in e and f, which are results for two fibre bundles from the same wildebeest. g–k, Data are from a different fibre bundle from a different cow.