What Are Spotter Bars?
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Squat Rack
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Squat racks allow the user to perform a weighted exercise. A barbell is loaded with weight and onto the back of the user. The user then lowers the weight by squatting toward the ground. Due to the potential harm that the user could incur by not being able to return the weight to the original upright position, spotter bars are used to prevent injury. They are placed at a point just low enough to allow for full range of motion through a squat, but not too high where they inhibit proper form.
Smith Machine
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Smith machines mechanically assist several different exercise motions. The bar has welded hooks on the outer end that can be clamped to a spotter bar by the turn of a wrist. There are multiple levels of spotter bars, which allows the user to turn his wrist and hook the barbell back on to the rack at any point in their movement. The Smith machine bar is permanently affixed to the steel structure but can move freely vertically. The bar cannot move horizontally. This permits the user to perform exercises that include and up and down motion and resistance.
Bench Press Weight Bench
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This bench sometimes has a spotter bar built into the equipment. However, the bench press movement can be performed in a horizontal or inclined position and can be done inside of a squat rack or Smith machine with a movable flat bench as the additional piece of equipment. The spotter bar on the squat rack and the multiple spottter bars on the Smith machine allows the user to go without a human spotter for the selected exercise.
Safety
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The primary purpose of a spotter bar is safety. A human spotter is the best way to get a spot during a difficult and heavy exercise. When one is not available, the spotter bar is an efficient substitute.
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sports