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An exercise machine has a main frame and a user support movably mounted relative to the main frame for movement between a start position and an end position during an exercise. At least one multi-function user engagement device is movably mounted relative to the frames for engagement and actuation b

An exercise machine has a main frame and a user support movably mounted relative to the main frame for movement between a start position and an end position during an exercise. At least one multi-function user engagement device is movably mounted relative to the frames for engagement and actuation by a user during an exercise, and a connecting linkage translates movement of the user engagement device to movement of the user support. The user engagement device has two different modes of operation selectable by a user for performing different exercises which exercise distinct muscles or muscle groups. A load provides resistance for both exercises.

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1. An exercise machine, comprising: a stationary main frame;a user support frame movably mounted relative to the main frame for rotation between a start position and an end position during an exercise;the user support frame having a primary support and at least one secondary support which are config

1. An exercise machine, comprising: a stationary main frame;a user support frame movably mounted relative to the main frame for rotation between a start position and an end position during an exercise;the user support frame having a primary support and at least one secondary support which are configured to engage different parts of a user's body, the primary support configured to support the majority of a user's weight in the start position of the support frame and the secondary support being fixed at a predetermined angular orientation and not moving relative to the primary support throughout an exercise movement;at least one multi-function user engagement device movably mounted relative to the frames which is configured for engagement by the user in performing exercises, the multi-function user engagement device configured for performance of at least first and second different exercises adapted to exercise different muscles or muscle groups in first and second modes of operation, respectively;the user engagement device being configured for movement in first and second predetermined paths, the first predetermined path corresponding to the first mode of operation and the second predetermined path corresponding to the second mode of operation, the user engagement device being switchable between the first and second modes of operation without adding any parts to the machine or removing any parts from the machine;a connecting linkage which is configured to translate movement of the user engagement device in the first and second modes of operation to movement of the user support frame;the secondary support moving together with the primary support at said predetermined fixed angular orientation throughout the first and second exercises; anda load configured for resisting movement of at least one of the user support frame, user engagement device, and connecting linkage in both the first and the second mode of operation of the user engagement device. 2. The machine of claim 1, wherein the user support frame is configured to support a user in a seated position and the primary support comprises a seat pad. 3. The machine of claim 2, wherein the secondary support comprises a back pad. 4. The machine of claim 3, wherein the back pad is configured to provide low back support. 5. The machine of claim 3, wherein the back pad is configured to provide upper back support. 6. The machine of claim 2, wherein the secondary support comprises a chest pad. 7. The machine of claim 2, wherein the secondary support comprises a back pad in the first mode of operation of the multi-function user engagement device and comprises a chest pad in the second mode of operation of the multi-function user engagement device, the secondary support being configured to support the user facing in opposite directions on the primary support in the first and second modes of operation. 8. The machine of claim 2, wherein the secondary support comprises an arm support pad. 9. The machine of claim 2, wherein the secondary support comprises a foot rest. 10. The machine of claim 1, wherein the user support frame has an additional support which is configured to support a different part of a user's body from the primary and secondary supports. 11. The machine of claim 1, further comprising a pivot mount on the main frame and at least one pivot connection on the pivot mount which pivotally connects the user support frame to the main frame for rotation about a user support pivot axis. 12. The machine of claim 11, wherein the pivot mount is located beneath the user support frame. 13. The machine of claim 1, wherein the user engagement device comprises a lower body exercise arm adjustable between the first mode in which the exercise arm is configured for performing a first lower body exercise and the second mode in which the exercise arm is configured for performing a second lower body exercise. 14. The machine of claim 13, wherein the lower body exercise arm comprises a leg exercise arm which is configured for performing leg extension exercises in the first mode and for performing leg curl exercises in the second mode. 15. The machine of claim 1, wherein the user engagement device comprises an exercise arm configured for performing two different arm exercises. 16. The machine of claim 15, wherein the exercise arm is adjustable between the first mode in which it is configured for performing biceps curl exercises and the second mode in which it is configured for performing triceps extension exercises. 17. The machine of claim 1, wherein the user engagement device is rotatably mounted relative to one of the user support frame and main frame. 18. The machine of claim 1, wherein the user engagement device is movable in a linear path. 19. The machine of claim 1, wherein the user engagement device comprises first and second handles and first and second arm portions extending from the respective handles and associated with at least one of the main frame, user support frame, and connecting linkage. 20. The machine of claim 1, wherein the user engagement device is configured for performance of an upper body exercise in the first mode of operation and an arm exercise in the second mode of operation. 21. The machine of claim 20, wherein the upper body exercise is an upper back exercise. 22. The machine of claim 1, wherein the user engagement device is configured for performance of an upper body exercise in the first mode of operation and a lower body exercise in the second mode of operation. 23. The machine of claim 1, wherein the user engagement device is configured for performance of at least two different torso exercises in first and second modes of operation. 24. The machine of claim 23, wherein the torso exercises are upper torso exercises. 25. The machine of claim 23, wherein the user engagement device is configured for performance of a chest exercise in the first mode of operation and an upper back exercise in the second mode of operation. 26. The machine of claim 25, wherein the chest exercise is a pectoral fly exercise. 27. The machine of claim 1, wherein the user engagement device comprises first and second rigid exercise arms rotatable relative to the frame, at least one exercise arm having a handle for gripping by a user positioned on the user support frame. 28. The machine of claim 27, wherein the exercise arms are joined to move together about a common pivot axis in each exercise movement. 29. The machine of claim 27, wherein the first exercise arm is configured for performance of an upper body exercise and the second exercise arm configured for performance of a lower body exercise. 30. The machine of claim 29, wherein the second exercise arm has a foot or leg engaging device configured for engagement by the user's feet or legs when performing a lower body exercise. 31. The machine of claim 27, wherein the exercise arms are independently movable. 32. The machine of claim 1, wherein the user engagement device travels in a fixed path in each mode of operation. 33. The machine of claim 1, wherein the user engagement device travels in a converging path in at least one mode of operation. 34. The machine of claim 1, wherein the user engagement device is configured for engagement by a user's upper body in at least one mode of operation. 35. The machine of claim 1, wherein the user engagement device is configured for engagement by a user's lower body in at least one mode of operation. 36. The machine of claim 1, further comprising a second multi-functional user engagement device movably mounted relative to the frames which is configured for engagement by the user in performing exercises, the second multi-function user engagement device configured for performance of a third exercise different from the first and second exercises in a third mode of operation and for performance of a fourth exercise different from the first, second and third exercises in a fourth mode of operation, the second user engagement device configured to exercise third and fourth distinct muscles or muscle groups of the user in the third and fourth modes of operation, respectively, the third and fourth muscles or muscle groups being different from the first and second muscles or muscle groups. 37. The machine of claim 36, wherein the exercises include upper and lower body exercises. 38. The machine of claim 36, wherein the exercises are selected from the group consisting of chest exercises, back exercises, shoulder exercises, leg exercises, and arm exercises. 39. The machine of claim 1, wherein the moving user support frame is configured to rock forward between the start and end position of both exercises. 40. The machine of claim 1, wherein the moving user support frame is configured to rock rearward between the start and end position of both exercises. 41. The machine of claim 1, wherein the moving user support frame is configured to travel through a horizontal orientation during an exercise movement. 42. The machine of claim 1, wherein the user engagement device comprises at least one elongate exercise arm which is flexible along at least part of its length. 43. The machine of claim 42, wherein the exercise arm comprises a flexible elongate exercise arm. 44. The machine of claim 43, wherein the exercise arm comprises a cable having a user engageable device at least at one end. 45. The machine of claim 44, wherein the cable has first and second handles at opposite ends and is movably mounted on at least one of the frames between the opposite ends. 46. An exercise machine, comprising: a stationary main frame;a user support frame;a pivot assembly pivotally mounting the user support frame relative to the main frame, whereby the user support frame is configured for rotation between a start position and an end position during an exercise, the pivot assembly defining a pivot axis about which the user support frame rotates and a vertical gravitational center line passing through the pivot axis;the user support frame having at least a primary support and a secondary support which are configured to engage different parts of a user's body, the primary support configured to support the majority of a user's weight in the start position of the support frame and being fixed at a predetermined angular orientation relative to the secondary support throughout an exercise movement;at least one multi-function user engagement device movably mounted relative to the frames which is configured for engagement by the user in performing exercises, the multi-function user engagement device having at least first and second different modes of operation and being configured for performance of a first exercise which exercises a first muscle or muscle group in the first mode of operation and for performance of a second exercise which exercises a second muscle or muscle group distinct from the first muscle or muscle group in the second mode of operation;a connecting linkage which is configured to translate movement of the user engagement device in the first and second modes of operation to movement of the user support frame;the secondary support configured to move together with the primary support at said predetermined fixed angular orientation throughout the first and second exercise;a load configured to resist movement of at least one of the user support frame, user engagement device, and connecting linkage; andthe user support frame and pivot assembly being configured such that portions of the user support frame are distributed on each side of the vertical gravitational center line during pivotal movement of the user support frame and only a portion of the user support frame passes through the gravitational center line during each of the first and second exercises. 47. The machine of claim 46, wherein the user support frame is configured to support a user in a seated position and the primary support comprises a seat pad. 48. The machine of claim 46, wherein the secondary support comprises a back pad. 49. The machine of claim 47, wherein the secondary support comprises a chest pad. 50. The machine of claim 47, wherein the secondary support comprises a foot rest. 51. The machine of claim 47, wherein the secondary support is configured to support a user facing in opposite directions in the first and second modes of operation, the secondary support comprising a back pad in the first mode of operation of the multi-function user engagement device and a chest pad in the second mode of operation of the multi-function user engagement device. 52. The machine of claim 46, wherein the secondary support comprises an arm support pad. 53. The machine of claim 46, wherein the user support frame has an additional support which is configured to support a different part of a user's body from the primary and secondary supports. 54. The machine of claim 46, wherein the user engagement device comprises an exercise arm adjustable between the first mode in which the exercise arm is configured for performing a first lower body exercise and the second mode in which the exercise arm is configured for performing a second lower body exercise. 55. The machine of claim 54, wherein the exercise arm comprises a leg exercise arm which is configured for performing leg extension exercises in the first mode and for performing leg curl exercises in the second mode. 56. The machine of claim 46, wherein the user engagement device comprises an exercise arm configured for performing two different arm exercises. 57. The machine of claim 56, wherein the exercise arm is adjustable between the first mode in which it is configured for performing biceps curl exercises and the second mode in which it is configured for performing triceps extension exercises. 58. The machine of claim 46, wherein the user engagement device is configured for performance of an upper body exercise in the first mode of operation and an arm exercise in the second mode of operation. 59. The machine of claim 58, wherein the upper body exercise is an upper back exercise. 60. The machine of claim 46, wherein the user engagement device is configured for performance of an upper body exercise in the first mode of operation and a lower body exercise in the second mode of operation. 61. The machine of claim 45, wherein the user engagement device is configured for performance of at least two different torso exercises in first and second modes of operation. 62. The machine of claim 61, wherein the exercises are upper torso exercises. 63. The machine of claim 61, wherein the user engagement device is configured for performance of a chest exercise in the first mode of operation and an upper back exercise in the second mode of operation. 64. The machine of claim 63, wherein the chest exercise is a pectoral fly exercise. 65. The machine of claim 46, wherein the pivot assembly comprises a pivot mount on the main frame and a single pivot connection on the pivot mount which pivotally connects the user support frame to the main frame for rotation about the user support pivot axis. 66. The machine of claim 65, wherein the pivot mount is located beneath the user support frame. 67. The machine of claim 46, wherein the pivot assembly comprises a four bar pivot linkage between the user support frame and main frame. 68. The machine of claim 46, wherein the user engagement device is rotatably mounted relative to one of the user support frame and main frame. 69. The machine of claim 46, wherein the user engagement device comprises first and second handles and first and second arm portions extending from the respective handles and associated with at least one of the main frame, user support frame, and connecting linkage. 70. The machine of claim 46, wherein the user engagement device comprises first and second rigid exercise arms rotatable relative to the frame, at least the first exercise arm having a handle configured for gripping by a user when positioned on the user support frame. 71. The machine of claim 70, wherein the exercise arms are joined to move together about a common pivot axis in each exercise movement. 72. The machine of claim 70, wherein the first exercise arm is configured for performance of an upper body exercise and the second exercise arm configured for performance of a lower body exercise. 73. The machine of claim 72, wherein the second exercise arm has a foot or leg engaging device configured for engagement by the user's feet or legs when performing a lower body exercise. 74. The machine of claim 70, wherein the exercise arms are independently movable. 75. The machine of claim 46, wherein the user engagement device comprises at least one bi-directional exercise arm configured to move in a first direction in the first mode of operation and in a second direction in the second mode of operation. 76. The machine of claim 75, wherein the user engagement device comprises first and second pivotally mounted, bi-directional exercise arms configured to extend on opposite sides of the user support, each exercise arm having at least one user engaging portion configured for engagement by a user. 77. The machine of claim 76, further comprising first and second pivot mounts pivotally mounting the first and second exercise arms for rotational movement relative to the frames, respectively, the pivot mounts having relatively skewed pivot axes, whereby the user engaging portions are configured to move in a converging path on rotation of the exercise arms in the first direction about the respective pivot axes to perform the first exercise and are configured to move in a diverging path on rotation of the exercise arms in the second, opposite direction to perform the second exercise. 78. The machine of claim 46, wherein the user engagement device is configured to move in a converging path in at least one mode of operation. 79. The machine of claim 46, further comprising a second multi-functional user engagement device movably mounted relative to the frames which is configured for engagement by the user in performing exercises, the second multi-function user engagement device configured for performance of a third exercise different from the first and second exercises in a third mode of operation and for performance of a fourth exercise different from the first, second and third exercises in a fourth mode of operation, the second user engagement device configured to exercise third and fourth distinct muscles or muscle groups of the user in the third and fourth modes of operation, respectively, the third and fourth muscles or muscle groups being different from the first and second muscles or muscle groups. 80. The machine of claim 79, wherein the exercises are selected from the group consisting of chest, back, shoulder, leg and arm exercises. 81. The machine of claim 46, wherein the user engagement device and user support frame move in the same direction during an exercise. 82. The machine of claim 46, wherein the user engagement device is movable in a linear path. 83. The machine of claim 46, wherein the user engagement device comprises at least one elongate exercise arm which is flexible along at least part of its length. 84. The machine of claim 83, wherein the exercise arm comprises a flexible elongate exercise arm. 85. The machine of claim 84, wherein the exercise arm comprises a cable having a user engageable device at least at one end. 86. The machine of claim 85, wherein the cable has first and second handles at opposite ends and is movably mounted on at least one of the frames between the opposite ends.