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Changes in muscle fiber size (left panel) and fiber type distribution (right panel) of the vastus lateralis in astronauts after 11 days of spaceflight (drawn from data in Ref. [28]). *p < 0.05 vs type I of preflight, † p < 0.05 vs type IIa of preflight, ‡ p < 0.05 vs type IIb of preflight
