This specialized exercise equipment isolates and strengthens the muscles of the upper arm. It typically features adjustable weight resistance and lever arms designed to target both the biceps and triceps through controlled curling and extension movements. Examples include preacher curl attachments and dual-function arm machines.
Developing upper arm strength offers significant functional benefits, from everyday tasks to athletic performance. Historically, arm training relied on free weights, but dedicated machines provide a controlled environment that can improve form, reduce the risk of injury, and potentially enhance muscle hypertrophy. This focus on isolated muscle engagement can be particularly advantageous for rehabilitation, targeted strength building, and individuals new to resistance training.