Variable loading in resistance training

Abstract

A system for variable loading strength training includes a loading arm assembly, a top bracket assembly, a trolley assembly, a dual pulley assembly, a dual pulley housing and a dual pulley assembly bracket. The loading arm assembly is configured for removable mounting to a first post of a rig. The top bracket assembly is configured for removable mounting to the rig first post distanced from the loading arm assembly. The trolley assembly is configured for translation along the rig first post superior to the top bracket assembly. The dual pulley trolley assembly configured for mounting to the second post of the rig distanced from the top pulley assembly. The dual pulley assembly bracket is configured for coupling the dual pulley housing to the dual pulley trolley assembly.

What is claimed is: 
     
         1 . A system for variable loading strength training, comprising:
 a loading arm assembly configured for removable mounting to a first post of a rig;   a top bracket assembly configured for removable mounting to the rig first post distanced from the lever arm assembly;   a trolley assembly configured for translation along the rig first post superior to the top bracket assembly;   a dual pulley trolley assembly configured for mounting to the second post of the rig distanced from the top pulley assembly;   a dual pulley housing; and   a dual pulley assembly bracket configured for coupling the dual pulley housing to the dual pulley trolley assembly.   
     
     
         2 . The system as set forth in  claim 1 , wherein the arrangement of the loading arm assembly and pulley assemblies is configured to deliver accentuated-eccentric loading to a user, such that the resistance applied during the cable's retraction exceeds the resistance applied during its advancement. 
     
     
         3 . The system as set forth in  claim 1 , further comprising:
 a cable take-up device mounted to the trolley assembly and configured to vary the effective length of the cable so as to adjust a start-position of the trolley assembly relative to the frame, wherein the cable take-up device is a hand operated winch.   
     
     
         4 . The system as set forth in  claim 1 , wherein the structural support assemblies comprise:
 lever arm assembly plates;   trolley assembly plates including the tensioner plate;   floating top pulley assembly plates;   dual pulley trolley assembly plates and dual pulley assembly bracket plates; and   lever arm dual pulley assembly plates.   
     
     
         5 . The system as set forth in  claim 1 , wherein the pulley assemblies are arranged to provide mechanical advantage ratios of one-to-one, two-to-one and three-to-one. 
     
     
         6 . The system as set forth in  claim 1 , wherein the dual pulley trolley assembly comprises a quick-index bracket having three discrete notches for seating the dual pulley assembly bracket in selectable positions. 
     
     
         7 . The system as set forth in  claim 1 , wherein the floating pulley assembly is removably mounted along an upper crossmember and houses one upper pulley and two lower pulleys, the upper pulley guiding a trolley-to-user cable from the trolley assembly to the top pulley assembly, and the lower pulleys routing the trolley-to-user cable through the openings in the crossmember. 
     
     
         8 . A system for variable loading strength training, comprising:
 a loading arm assembly configured for removable mounting to a first post of a rig; and   a top bracket assembly configured for removable mounting to the rig first post distanced from the lever arm assembly.   
     
     
         9 . The system as set forth in  claim 8 , wherein the loading arm assembly further comprises:
 a loading arm;   configured to sandwich the first post of the rig, first and second lever arm mounting plates; and   configured to suspend the loading arm, first and second loading plates.   
     
     
         10 . The system as set forth in  claim 9 , wherein each of the loading plates further comprises:
 first and second edges extending approximately perpendicular with third and fourth edges;   a fastener hole;   a pivot pin hole;   a loading horn hole aligned with the pivot pin hole along the second edge; and   near a corner of the first and third edges, a multiplier anchor point.   
     
     
         11 . The system as set forth in  claim 9 , further comprising a pivot stop configured for mounting to the loading arm to support the same in a position elevated above a support/floor surface. 
     
     
         12 . The system as set forth in  claim 9 , wherein the loading arm further comprises:
 configured for suspending by the first and second loading arm mounting plates, a shoulder portion having a length;   a lever portion having a length substantially longer than the length of the shoulder portion and which extends substantially perpendicularly to the length of the shoulder portion;   a pivot pin hole formed through the shoulder portion and configured to receive a pivot pin for pivotably coupling the loading arm to a rig through the first and second loading arm mounting plates;   a fastener hole formed through the lever portion distal from the shoulder portion and configured to receive a fastener for coupling the loading plate to the lever portion; and   a loading horn provided to the lever portion distal from the shoulder portion and extending from the lever portion along a length perpendicular to both the length of the shoulder portion and the length of the lever portion, wherein the loading horn is configured for insertion through the loading horn hole of the loading plate.   
     
     
         13 . The system as set forth in  claim 12 , wherein each of the loading arm mounting plates further comprises:
 first and second edges extending approximately perpendicular with third and fourth edges;   first and second peg holes aligned with the first edge; and   a first pivot pin hole.   
     
     
         14 . The system as set forth in  claim 13 , wherein the first and second peg holes are configured to receive first and second pegs, respectively, for insertion through peg holes of the first pole of the rig. 
     
     
         15 . The system as set forth in  claim 13 , wherein a pivot pin of a loading arm is received in the first pivot pin holes of the first and second mounting arm plates. 
     
     
         16 . A cable management trolley, comprising:
 configured to sandwich a post of a rig, first and second trolley assembly plates;   at least one trolley pulley suspended between the first and second trolley assembly plates;   at least one length management pulley suspended between the first and second trolley assembly plates;   at least one length management winch; and   a plurality of rollers suspended between the first and second trolley assembly plates and configured for rolling along first and second exterior surfaces of the post of the rig.   
     
     
         17 . The cable management trolley as set forth in  claim 16 , further comprising at least one loading horn. 
     
     
         18 . The system as set forth in  claim 16 , wherein each of the trolley assembly plates further comprises:
 first and second edges extending approximately perpendicular with third and fourth edges;   first pair of axle holes aligned with the first edge;   spaced from the first pair of axle holes, a second pair of axle holes aligned with the first edge;   a first individual axle hole adjacent to a corner of the second and third edges;   a second individual axle hole between the first individual axle hole and the second pair of axle holes; and   first and second anchor points.   
     
     
         19 . The system as set forth in  claim 18 , wherein axles of the length management pulley and the trolley pulley are received in the first and second individual axle holes, respectively, of the first and second trolley assembly plates. 
     
     
         20 . The system as set forth in  claim 18 , wherein axles of the rollers are received in the first and second axle hole pairs of the first and second trolley assembly plates. 
     
     
         21 . The system as set forth in  claim 18 , wherein the length management winch is mounted to a tensioner plate fixed between the second edges of the first and second trolley assembly plates.