Table 3. Proportion of myosin light chain (MLC) isoforms in the vastus lateralis muscle before and after a 54-week strength and power training program in training group subjects (n = 8). Values are means (±SD). MLC1s MLC1f MLC2s MLC2f MLC3 Before 32.0 (5.4) 23.9 (3.8) 13.6 (3.8) 17.8 (5.0) 12.7 (5.2) After 30.6 (4.4) 25.5 (2.0) 13.7 (2.9) 18.8 (5.4) 11.3 (4.6) s = slow type, f = fast type.