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  • Title: Skeletal muscle metabolism in maximal bicycle and treadmill exercise distinguished by using in vivo metabolic freeze method and phosphorus-31 magnetic resonance spectroscopy in normal men.
    Author: Okita K, Nishijima H, Yonezawa K, Ohtsubo M, Hanada A, Kohya T, Murakami T, Kitabatake A.
    Journal: Am J Cardiol; 1998 Jan 01; 81(1):106-9. PubMed ID: 9462622.
    Abstract:
    This study indicates that skeletal muscle metabolism may affect the results of maximal bicycle and treadmill exercise differently, and that maximal bicycle exercise was limited by quadriceps muscle metabolism rather than by cardiopulmonary capacity. In contrast, maximal treadmill exercise was not limited, eliciting more cardiopulmonary reserve and attaining greater peak oxygen uptake than maximal bicycle exercise.
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