Effects Of Old Age And Contraction Mode On Knee Extensor Muscle Metabolic Economy In Vivo: 1320 Board #2 May 28 9:30 AM ‐ 11:30 AM. (July 2020) - Fitzgerald, Liam F.; Bartlett, Miles F.; Martin, Anthony R.; Francisco, Ericber Jimenez; Sup, Frank C.; Nagarajan, Rajakumar; Kent, Jane A.