![]() ![]() However, the preacher curl is designed to position your arms out in front of you at a steeper incline, which places more emphasis on the short head of the biceps, otherwise known as the bicep peak. The preacher curl works similarly to the arm blaster to target both heads of the biceps by fixing the upper arm in place against the pad. Keeping your elbows forward while performing curls ensures that you’re keeping tension on the biceps during the concentric (lifting) and eccentric (lowering) portions of your curl.īy encouraging proper technique during bicep curls and forcing you to control your movements (rather than using momentum), the arm blaster can reduce your risk of injury and help you grow bigger and stronger biceps. These two outer pads promote proper technique during seated and standing curls by preventing you from shifting your elbows backward. Together these muscles are responsible for elbow flexion (bending) and also work to prevent elbow hyperextension.Īrm blasters target both heads of the biceps by anchoring the upper arm to the two outer pads. The biceps brachii long head is located on the outer side of the biceps, while the short head is located on the inner arm. The primary muscle groups involved during the arm blasters are the biceps brachii long head and short head. To decide which is better for arm growth, it’s important to understand how they function. ![]() The Science Behind Arm Blasters and Preacher Curls The preacher curl is a safe and effective way to improve your bicep curl technique by minimizing swaying and secondary muscle involvement so that you cannot “cheat” the movement. The preacher curl is a curl variation that is typically performed using a specific piece of equipment (available at most commercial gyms) which is designed to fix the upper arms in place against a pad to help isolate biceps for bicep curls. This piece of equipment is great for those who have limited equipment to work with, like those who have a home gym, or apartment gym, or are frequently using hotel gyms, but still want to have higher-quality arm workouts. Anchoring the upper arms in place allows you to target and isolate the biceps when doing biceps curls. The arm blaster is a versatile and portable metal plate that fixes your arms to your sides.
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