Muscle efficiency

Former Member
Former Member
Does anyone know how efficient human muscle tissue is as a means of converting stored energy into mechanical work? More precisely, how much stored energy (in terms of ATP, fatty acids or glycogen -- say, expressed in calories) must a muscle burn in order to perform one foot-pound of mechanical work? Of course this will depend on a lot of things (age, conditioning, fatigue level,etc.), but just a range or ballpark estimate would be useful. (I am trying to estimate the energy expenditure of various activities using this approach.)
Parents
  • Dang! The next time people joke about my being quick to calculate relay splits, I should point them to your post. :D I'm trying to remember back to high school biology. I think reptile muscle is a lot more efficient for work output, because they are cold blooded. Our system is designed to put out a lot of heat, to keep the body temperature up.
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  • Dang! The next time people joke about my being quick to calculate relay splits, I should point them to your post. :D I'm trying to remember back to high school biology. I think reptile muscle is a lot more efficient for work output, because they are cold blooded. Our system is designed to put out a lot of heat, to keep the body temperature up.
Children
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