Staged-resistance training device and method of use

Abstract

A staged resistance training device is described. When performing an exercise motion, normal human joint mechanics often mean less effort is needed in the later stages of a resistance exercise motion than at the beginning of the motion. The staged resistance training device is configured to allow a user, such as a weightlifter using a training machine having a series of resistive elements, to perform an exercise repetition with staged resistance forces experienced during the repetition. A range of motion of the exercised body part is opposed during a first stage of the motion by an initial resistance, transitioning to a second, greater resistance in a later second stage of the exercise motion. The staged resistance training device provides a means wherein the user can apply increased resistance to overcome an increasing mechanical advantage later during an exercise motion, versus at the motion's beginning.

What is claimed is: 
     
         1 . A staged-resistance training device comprising:
 a first coupling device removably coupled to a first resistance, wherein the first resistance is configured to oppose a first stage of a range of motion, the range of motion comprising
 the first stage, 
 a second stage, 
 and a transition point, wherein the first stage precedes the second stage at the transition point; 
   a second coupling device removably coupled to a second resistance, wherein the second resistance is configured to oppose the second stage; and   a resistance interval adjustment coupled between the first coupling device and the second coupling device, wherein the transition point is adjustable in response to movement of the resistance interval adjustment.   
     
     
         2 . The invention of  claim 1  wherein the resistance interval adjustment is flexible. 
     
     
         3 . A method of using a staged-resistance training device, comprising the steps of:
 coupling a first resistance to a first retaining device on a flexible member;   coupling a second resistance to a second retaining device on the flexible member;   setting a length along the flexible member between the first retaining device and the second retaining device;   moving a body part through a first stage of a range of motion against the first resistance to a transition point; and
 moving the body part through a second stage of the range of motion against the second resistance from the transition point. 
   
     
     
         4 . A method of modifying a resistance training device, comprising the steps of:
 selecting a first amount of resistance;   coupling a first retaining device to engage said first resistance;   selecting a second amount of resistance;   coupling a second retaining device to engage said second resistance; and   attaching said first and second retaining device to a member whereby at a predetermined point while lifting the first resistance said second resistance is engaged for lifting.