چکیده:
Background. The double haul is a unique feature of single-handed fly casting and is used in both fly fishing and fly
casting competition. The movement behaviour during the double haul has not been investigated in previous research.
Objectives. Describe the coordination of the rod and line hauling movements during distance fly casting. Methods.
Elite fly casters performed distance casting with four different fly rod and fly line set-ups used in fly fishing and fly
casting competition. Rod and hauling movements were measured with a 3D motion analysis system. Results. The
rod and line hauling movements were coordinated in an order whereby peak translational speed of the rod occurs
prior to the peak speed of the angular rotation of the rod, and the peak speed of the angular rotation of the rod occurs
prior to the peak speed of the line haul. This was consistent for all cast sequences, i.e., the back and forward false
casts and the delivery cast, and for all four equipment set-ups, i.e., a shooting-head line cast with a relatively stiff fly
rod and a long-belly line cast with three different fly rods with different stiffness and action curves. Results also
showed differences in movement coordination between cast sequences and rod and line set-ups. Conclusion. Among
elite casters, single-handed fly casting with double haul is coordinated in an order of events whereby the peak speed
occurs first for the translation of the rod, then for the rotation of the rod and finally for the line haul.
خلاصه ماشینی:
"Among elite casters, single-handed fly casting with double haul is coordinated in an order of events whereby the peak speed occurs first for the translation of the rod, then for the rotation of the rod and finally for the line haul.
An experimental design was used that evaluated the coordination of the rod and line hand movements during the various cast sequences of overhead single-handed fly casting with double haul using four different equipment set-ups.
A comparison between equipment revealed a significantly lower peak speed of the rod translation and rotation for each cast sequence for Sea Trout (short line) compared to Trout 1-3 (long line).
Regarding sequential coordination, it was shown that during forward false casting, there were increased time delays between the peak speed of rod translation and rotation as well as between the peak speed of rod translation and line haul for Sea Trout compared to Trout 1-3.
Regarding differences in peak speed between short and long lines, it was shown that during false casting (backward and forward), the peak speed of rod translation and rod rotation as well as line haul was lower for Sea Trout compared to Trout 1-3.
CONCLUSION The results support the fact that, among elite casters, single-handed fly casting with double haul is coordinated in an order of events whereby the peak speed occurs first for the translation of the rod, then for the rotation of the rod and finally for the line haul."