I would like to know in two different treadmill protocols, if we are going to reduce the treadmill velocity for rodents (14 m/min instead of 20 m/min) but increase the time of exercise (60 min instead of 45 min), then intensities of these two protocols are the same? (14 m/min, 60 min/day) (20 m/min, 45 min/day)

Thanks