Fig. 2From: Effects of oral contraceptive use on muscle strength, muscle thickness, and fiber size and composition in young women undergoing 12 weeks of strength training: a cohort studyIncreases in the proportions and thicknesses of type 2 muscle fibers. The photographs (× 10 magnification) compare young women in the non-OC (a: pre-training, b: post-training) and OC (c: pre-training, d: post-training) groups before and after 12 weeks of strength training. Scale bar: 100 μm. OC, oral contraceptiveBack to article page