Because of the bar positioning it gives the same effect as an overhead/front squat
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The "safety squat bar" can give you a new lease on effective off-season squat training. The exquisite isolation the Safety Squat Bar provides for your quads will be a truly unique experience, I assure you.
Your hands are not holding the bar. This allows you to grasp the specially built handles on the SportStrength power rack. Because of the heavy loads involved in squatting, there is a tendency to "round" your back and place unnecessary stress on those easily displaceable intervertebral discs. This is avoided by exerting pressure against the handles, thus maintaining a perfectly straight back throughout the entire squatting motion.
Using your hands to spot yourself prevents you from falling forward or backward. Also, when the "sticking point" is reached, your hands can be used to help you through it. This unique feature allows you to work with heavier weights in the ranges of movement where you are strongest and gives you help when you are weakest. You are exerting closer to your maximum effort through the entire range of motion.
The padded yolk that the Safety Squat Bar is equipped with effectively eliminates neck and shoulder girdle discomfort. And the fact that you needn't use your hands to hold the bar on your shoulders eliminates wrist, shoulder and elbow discomfort.
By using your hands to regulate body position, your posture under the bar can be adapted to suit your own anatomical peculiarities so that you can literally "tailor" your squatting style to afford maximum overload.
Conventional squatting places the weight behind you, fully four inches behind your body's midline. That caused you to lean or bend forward for balance. With the Safety Squat Bar, the weight is distributed directly in line with your body's midline, and completely eliminates the need to lean forward.
And, because you are holding onto handles build onto the squat rack, you do not back up before squatting, and you are not obliged to walk back into the rack after squatting. This element alone has the potential of eliminating up to three quarters of all squat-related injuries.
As a final note, remember that your off-season training is NEVER meant to be a time for impressing your training buddies by seeing how much weight you can squat with. It is a time for establishing a solid foundation for the high-intensity pre-season training to follow. It is a time for eliminating weaknesses. It is a time for establishing a high degree of limit strength in all muscles of the body in preparation for the highly ballistic speed-strength training that must be incorporated into your precontest preparation. THAT, fellow iron freaks, means SQUATTING, but squatting SAFELY!