Leg extension machine

A leg extension machine comprising:

• a frame portion supported by a bottom surface thereof and standing upright;
• a seating portion that is connected to the frame portion and provides a space for a user to sit, and a standing angle and a height which are adjustable;
• an exercise rotation portion connected to the frame portion, disposed adjacent to the seating portion to provide a space for the user to be seated and hang his or her legs, and rotated by an external force applied by the user;
• a weight portion supported by the frame portion and accommodating a plurality of weights;
• and
• a weight delivering portion connected to the frame portion, connecting the exercise rotation portion and the weight portion, and linked to the rotation of the exercise rotation portion to raise and lower the plurality of weights of the weight portion,
• wherein the seating portion includes:
• a hip seating portion supporting buttocks of the user while seated;
• a back seating portion supporting a back of the user while seated;
• a seating angle adjuster connected to the frame portion and the back seating portion to be used to adjust an angle of the back seating portion;
• and
• a plurality of grip portions connected to opposing sides of the hip seating portion and arranged in parallel with the hip seating portion to be configured for gripping by the user.