Table 1. The input variables generated by artificial neural network which were used to define functional model of monofin swimming relations (classification, names and symbols of the parameters calculated by the network). PARAMETERS AND SYMBOLS Part of the monofin/lower limb Points marked on the monofin/body surface ANGLES OF FLEXION ON THE MONOFIN’S ANGULAR VELOCITIES OF THE MONOFIN FLEXION ANGULAR ACCELERATIONS OF THE MONOFIN FLEXION MONOFIN Tail (Ankle-Tail-Middle) (αT) (ωT) (εT), Middle (Tail-Middle-Edge) (αM) (ωM), (εM) ANGLES OF ATTACK OF THE MONOFIN ANGULAR VELOCITIES OF THE MONOFIN ATTACK ANGULAR ACCELERATIONS OF THE MONOFIN ATTACK The entire surface (Tail-Edge-Horizontal) (βEH) (ωEH) (ωEH) Proximal part (Tail-Middle-Horizontal) (βPH) (ωPH) (εPH) The distal part (Middle-Edge-Horizontal) (βDH) (ωDH) (ωDH) Water resistance forces FORCES FLEXING THE TAIL (FT) FORCES FLEXING THE MIDDLE (FM) LOWER LIMBS ANGLES OF FLEXION ON THE LEGS ANGULAR VELOCITIES OF THE LES FLEXION ANGULAR ACCELERATIONS OF THE LEGS FLEXION Knee joints (Ankle-Knee-Hip) (αK) (ωK) (εK) Shin-ankle joints (Knee-Ankle-Tail) (αA) (ωK) (ωK)