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Exercise apparatus having a slidable weight bar assembly with hand brake assemblies is provided for enaging and disengaging the weight bar assembly with a support frame. The exercise apparatus can be configured as a squat machine or a bench press. The exercise apparatus can include an adjustable bac

Exercise apparatus having a slidable weight bar assembly with hand brake assemblies is provided for enaging and disengaging the weight bar assembly with a support frame. The exercise apparatus can be configured as a squat machine or a bench press. The exercise apparatus can include an adjustable back support that facilitates proper positioning and support of the operator's upper and lower back while performing squat exercises. The exercise apparatus can further include spring assemblies that increase the kinetic load during downward movements of the slidable weight bar assembly.

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1. An exercise apparatus, comprising: a support frame comprising vertical sliding poles and plural sets of latch catches;a slidable weight bar assembly coupled to vertical sliding poles of the support frame, the slidable weight bar assembly capable of guided movement along the sliding poles, the wei

1. An exercise apparatus, comprising: a support frame comprising vertical sliding poles and plural sets of latch catches;a slidable weight bar assembly coupled to vertical sliding poles of the support frame, the slidable weight bar assembly capable of guided movement along the sliding poles, the weight bar assembly comprising:hollow sliding guides coupling the slidable weight bar assembly to the vertical sliding poles;horizontal weight bars extending horizontally from the hollow sliding guides;a set of latch assemblies coupled to an exterior of the sliding guides, the set of latch assemblies capable of pivotal movement for engagement with the plural sets of latch caches of the support frame;arm handles extending from the weight bar assembly to form a yoke about a neck and shoulder area,a pair of hand brake assemblies, each hand brake assembly directly coupled to a terminal end of a respective arm handle, each hand brake assembly further coupled to a respective latch assembly of the set of latch assemblies by a transmission cable, the hand brake assemblies being operable to pivot the set of latch assemblies into a first position for disengaging the slidable weight bar assembly from one of the plural sets of latch catches of the support frame and into a second position for engaging the slidable weight bar assembly into one of the plural sets of latch catches of the support frame. 2. The exercise apparatus of claim 1, wherein each of the hand brake assemblies comprises a lever, when the levers are in a depressed state, the respective transmission cables each transmits a first mechanical signal causing the set of latch assemblies to pivot into the first position for disengaging the slidable weight bar assembly from one of the plural sets of latch catches, enabling guided movement of the slidable weight bar assembly along the sliding poles. 3. The exercise apparatus of claim 2, wherein when the levers are in a released state, the respective transmission cables each transmits a second mechanical signal causing the set of latch assemblies to pivot into the second position for engaging the sliding weight bar assembly into one of the plural sets of latch catches, preventing guided movement of the sliding weight bar assembly. 4. The exercise apparatus of claim 3, wherein guided movement of the sliding weight bar assembly is prevented in a downward direction only. 5. The exercise apparatus of claim 1, wherein each latch assembly further comprises a spring that compresses or decompresses to pivot a latch member when receiving the first mechanical signal or the second mechanical signal, respectively, from the transmission cable. 6. The exercise apparatus of claim 1, wherein the weight bar assembly further comprises a back support adjustably coupled to the slidable weight bar assembly. 7. The exercise apparatus of claim 1, further comprising springs, each spring positioned about one of the vertical sliding poles at a height above the slidable weight bar assembly, the springs being compressed by the hollow sliding guides during an upward movement of the weight bar assembly and the springs being released and generating an additional downward force on the weight bar assembly during a downward movement of the weight bar assembly. 8. The exercise apparatus of claim 1 is configured as a squat machine. 9. The exercise apparatus of claim 1 is configured as a bench press. 10. An exercise apparatus, comprising: a support frame comprising vertical sliding poles and plural sets of latch catches;a slidable weight bar assembly coupled to vertical sliding poles of the support frame, the slidable weight bar assembly capable of guided movement along the sliding poles, the weight bar assembly comprising:hollow sliding guides coupling the slidable weight bar assembly to the vertical sliding poles;horizontal weight bars extending horizontally from the hollow sliding guides;a set of latch assemblies coupled to an exterior of the sliding guides, the set of latch assemblies capable of pivotal movement for engagement with the plural sets of latch caches of the support frame;arm handles extending from the weight bar assembly to form a yoke about a neck and shoulder area,a pair of hand brake assemblies, each hand brake assembly directly coupled to a terminal end of a respective arm handle, each hand brake assembly coupled to a respective latch assembly of the set of latch assemblies, the hand brake assemblies being operable to pivot the set of latch assemblies into a first position for disengaging the slidable weight bar assembly from one of the plural sets of latch catches of the support frame and into a second position for engaging the slidable weight bar assembly into one of the plural sets of latch catches of the support frame.