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Lötscher, Fabian; Löffel, Tobias; Steiner, Roger; Vogt, Michael; Klossner, Stephan; Popp, Albrecht; Lippuner, Kurt; Hoppeler, Hans; Däpp, Christoph (2007). Biologically relevant sex differences for fitness-related parameters in active octogenarians. European journal of applied physiology, 99(5), pp. 533-40. Heidelberg: Springer-Verlag 10.1007/s00421-006-0368-5
