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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: J Anim Ecol. 2019 Jun 7:10.1111/1365-2656.13040. doi: 10.1111/1365-2656.13040

Figure 6.

Figure 6

Variation in measured rate of oxygen consumption (upper panel) and VeDBA (smoothed over 2 s) (lower panel) for a human with a waist-mounted tag running on a treadmill at a series of constant speeds that increased stepwise by 1 km/h between 3 and 11 km/h (after an initial period at 0 km/h). V˙O2 was measured using mask respirometry on a breath-by-breath basis but averaged over 5 s (Oxygon Pro [Jaeger Oxygon Manual Version 4.5]). Note the lag in response of the oxygen consumption (see text) but also considerable variability in both this and the smoothed VeDBA, even within one speed (the large step in DBA corresponds to the gait changing from walking to jogging).