Respiratory Muscle Power And The Slow Component Of O2 Uptake

“The slow component of O2 uptake represents a progressive decline in work efficiency during strenuous, constant work rate cycling. Although most of this "excess" O2 uptake can be explained by factors intrinsic to the exercising muscles, it has been proposed that respiratory muscle work rate may also contribute to the O2 uptake response.”

Conclusion:

“This investigation supports the thesis that the energetic contribution from respiratory muscles to the O2 uptake amplitude is disproportionately higher during severe-intensity exercise compared with that during heavy-intensity exercise.”

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