BIOL3030 Lecture Notes - Lecture 20: Naked Mole-Rat, Ectotherm, Poikilotherm
14 Mar 2017
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Energy cost of running/walking vs body mass. Cost of transport: how much it takes to move 1 kg of mass 1 meter. Same relationship of other metabolic things: mass specific resting metabolic, standard metabolic rate. Cost less to move 1 kg of body mass on a per kg basis. Runners dont do much work to keep themselves going. Bigger animals can store more energy in springs of their legs. Move quicker, store more energy in springs. Bigger: have more spring/material to store energy in. Spring: achilles tendon: attached to gastric nemius and soleus. Change length of tendons when bounding: elastic rebound. Cost of transport decreases with increase of speed. Generate ground reaction force and store energy. Too fast: legs move over and use muscular energy. Efficiency is less and more energy is used: j/u shaped. Types of locomotion and cost of transport. Less viscous/thick: more energy to move because of fighting gravity. They are buoyant while we have gravity.
