Sugar flux through the flight muscles of hovering vertebrate nectarivores: a review

@article{Welch2014SugarFT,
  title={Sugar flux through the flight muscles of hovering vertebrate nectarivores: a review},
  author={K. C. Welch and C. Chen},
  journal={Journal of Comparative Physiology B},
  year={2014},
  volume={184},
  pages={945-959}
}
In most vertebrates, uptake and oxidation of circulating sugars by locomotor muscles rises with increasing exercise intensity. However, uptake rate by muscle plateaus at moderate aerobic exercise intensities and intracellular fuels dominate at oxygen consumption rates of 50 % of maximum or more. Further, uptake and oxidation of circulating fructose by muscle is negligible. In contrast, hummingbirds and nectar bats are capable of fueling expensive hovering flight exclusively, or nearly… Expand
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