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A reader weighs in on this one – and finds it will depend on how far you’re travelling
gives a graph showing oxygen consumption as a function of speed for walking and running .per kilogram body weight per kilometre at around 1.3 metres per second.
Running is a straight line that decreases from around 210 ml OThis means that if you want to go a certain distance in a given, fairly long amount of time while consuming the lowest possible amount of oxygen, then you should walk. However, when the allotted time is less than a certain value, corresponding to a slightly fast walk, then you should alternate between running as fast as you can and walking at that slightly fast walking speed.
My theory is that, because dogs don’t climb and have no aerial predators, they tend to not have much concept of ‘up’ Note, however, that this is talking about total oxygen consumption, not extra oxygen consumption over normal basal rate. To minimise extra oxygen consumption, the optimum is a slower walk than that for total consumption. Questions should be scientific enquiries about everyday phenomena, and both questions and answers should be concise.
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