Fig. 4From: Can metrics of acceleration provide accurate estimates of energy costs of locomotion on uneven terrain? Using domestic sheep (Ovis aries) as an examplePower in watts (W) against treadmill speed (m/s) from oxygen consumption data collected on sheep and goats. Blue data points and blue line represent data from sheep in the current study on treadmill inclines and decline angles (− 6 to 6°). Black data points and line represent data on sheep on treadmill inclines of 0°, 2.6° and 5° obtained from Clapperton [27]. The red points and red line represent similar data from sheep, and the grey points and grey line represent data from goats, both of which were walking at a 25° treadmill incline, obtained from Dailey and Hobbs [25]Back to article page