A resistance training system, comprising a main body (10), a resistance motor (20), and a traction rope (30),
- wherein said traction rope (30) has a winding end (31) and a connecting end (32), wherein said winding end (31) is wound around a rotating output shaft of said resistance motor (20), wherein said connecting end (32) is actively connected to a converter (100),
- wherein said converter (100) and a puller (40) are interconnected to each other, and said resistance motor (20) is able to generate a tension force (F), wherein said tension force (F) is transmitted through said traction rope (30) and said converter (100) to said puller (40),
- said converter (100) has a direct tension transmission manner and a doubled tension transmission manner,
- wherein while operating under said direct tension transmission manner, said converter (100) is able to directly transmit said tension force (F) to said puller (40),
- wherein while operating under said doubled tension transmission manner, said converter (100) is able to convert said tension force (F) to a doubled tension force (Fa), wherein said doubled tension force (Fa) is subsequently transmitted to said puller (40),
- said converter (100) is able to switch between said direct tension transmission manner and said doubled tension transmission manner, wherein said converter (100a) comprising a traction rope channel (110a), a free rope hole (111a), a fixed rope hole (112a), and a connecting end fixture (113a),
- wherein said free rope hole (111a) and said fixed rope hole (112a) are respectively positioned at both ends of said traction rope channel (110a), and said traction rope (30) is simultaneously threaded through said traction rope channel (110a), said free rope hole (111a), and said fixed rope hole (112a),
- wherein while operating under said direct tension transmission manner, said puller (40) is connected to said converter (100a), and said connecting end (32) of said traction rope (30) is fixed at the position of said fixed rope hole (112a),
- wherein while operating under said doubled tension transmission manner, said puller (40) is connected to said converter (100a), said connecting end (32) of said traction rope (30) is fixed to said connecting end fixture (113a), and said converter (100a) is positioned in between of said winding end (31) of said traction rope (30) and said connecting end (32) of said traction rope (30),
- said traction rope (30) forms a primary tension portion (121a) in between of said fixed rope hole (112a) and said connecting end fixture (113a),
- and said traction rope (30) forms a secondary tension portion (122a) in between of said converter (100a) and said winding end (31).