Finger exercising device and system for the training, warming up, and/or rehabilitation of muscles, tendons, and pulleys of the phalanges and method of determining adhesion for climbing

A finger exercising device for the training, warming up, or rehabilitation of muscles, tendons, and pulleys of a phalanx, comprising:

• a base configured to define a longitudinal direction, a transverse direction, and a sagittal direction orthogonal to one another and a front face perpendicular to the sagittal direction, the base comprising at least one longitudinal guide extending in the longitudinal direction;
• a carpal support, associated with the base and configured to support the base of the palm of the hand where the carpal bones are located;
• at least one distal phalangeal support, associated with the base and configured to define a concave distal phalangeal seating to support the ends of the fingers where the distal phalanges are located;
• the distal phalangeal support being guided by the at least one longitudinal guide and configured to allow a relative sliding between the carpal support and the distal phalangeal support in the longitudinal direction along a travel distance between a maximum extension position and a minimum extension position;
• at least one elastic element configured to offer elastic resistance to the sliding, in the longitudinal direction, of the at least one distal phalangeal support;
• the carpal support configured to define a concave carpal seating defined by a concavity formed between a sagittal carpal surface, mostly facing the sagittal direction, and a longitudinal carpal surface, mostly facing the longitudinal direction, the longitudinal carpal surface being disposed closer to the distal phalangeal support than the sagittal carpal surface and being disposed adjacent to the sagittal carpal surface, and configured to force an arched, semi-arched, or extended grip of a hand between the concave carpal seating and the concave distal phalangeal seating.