Figure 8. Schematic diagrams showing various possibilities that might have produced the differences among the diet groups in Pepe and McLennan (2002).

REF (thin continuous line), FO (thick continuous line) and SFA (dotted line). A, example of genuine differences in peak efficiencies, despite being observed at only the selected afterload (vertical broken line). B and C, further examples of no differences in peak efficiency among the groups nevertheless leading to faulty conclusions because of different efficiency profiles.