Smith Machine Squat

While many coaches don't like Smith machine squats because they're not a great way to improve your ability to perform free-weight squats, it's important to remember the two movements involve different mechanics. This doesn't make Smith machine squats a bad exercise; it simply means they may not be so great for improving your ability to squat without the support offered by the Smith machine. However, when used to improve quad strength and development, Smith machine squats are a great option. – Susy Natal