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. - Okita,K.; Nishijima,H.; Yonezawa,K.; Ohtsubo,M.; Hanada,A.; Kohya,T.; Murakami,T.; Kitabatake,A. (Am J Cardiol, 1998)