Changes in Calf Muscle Performance, Energy Metabolism, and Muscle Volume Caused by Long Term Stay on Space Station MIR - Zange, J; Müller, K; Schuber, M; Wackerhage, H; Hoffmann, U; Günther, R W; Adam, G; Neuerburg, J M; Sinitsyn, V E; Bacharev, A O; Belichenko, O I (International Journal of Sports Medicine, 1997)