Muscle fiber recruitment and the slow component of O2 uptake: constant work rate vs. all-out sprint exercise.

@article{Vanhatalo2011MuscleFR,
  title={Muscle fiber recruitment and the slow component of O2 uptake: constant work rate vs. all-out sprint exercise.},
  author={Anni Vanhatalo and David C. Poole and Fred J. DiMenna and Stephen J Bailey and Andrew M. Jones},
  journal={American journal of physiology. Regulatory, integrative and comparative physiology},
  year={2011},
  volume={300 3},
  pages={
          R700-7
        }
}
The slow component of pulmonary O(2) uptake (Vo(2)) during constant work rate (CWR) high-intensity exercise has been attributed to the progressive recruitment of (type II) muscle fibers. We tested the following hypotheses: 1) the Vo(2) slow component gain would be greater in a 3-min all-out cycle test than in a work-matched CWR test, and 2) the all-out test would be associated with a progressive decline, and the CWR test with a progressive increase, in muscle activation, as estimated from the… 

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