Reduction of metabolic cost during motor learning of arm reaching dynamics.

  title={Reduction of metabolic cost during motor learning of arm reaching dynamics.},
  author={Helen J. Huang and Rodger Kram and Alaa A. Ahmed},
  journal={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  volume={32 6},
It is often assumed that the CNS controls movements in a manner that minimizes energetic cost. While empirical evidence for actual metabolic minimization exists in locomotion, actual metabolic cost has yet to be measured during motor learning and/or arm reaching. Here, we measured metabolic power consumption using expired gas analysis, as humans learned novel arm reaching dynamics. We hypothesized that (1) metabolic power would decrease with motor learning and (2) muscle activity and… CONTINUE READING
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