Table 3 Comparison of forces and thrust efficiency between Swimmer A and B.
Item A B
Average of swimmer’s advancing speed (m·s-1) 1.84 1.75
Average of resultant force, ave(|F|), (N) 63.9 52.4
Average of thrust force, ave(|Fx|), (N) 32.4 23
Thrust efficiency, η (%) 50.7 43.9