Pulaski County, AR is in the central part of Arkansas in the west south central United States: Closest City to the Center of Pulaski County, AR: Cammack Village, Arkansas: Cities in Pulaski County, AR:
Positioning the Body for Arm Curls. Mike Harrington / Getty Images. The arm curl or biceps curl is a highly recognizable weight training exercise that utilizes dumbbells or barbells, or even kettlebells, to work the muscles of the upper arm, the biceps, and to a lesser extent, the lower brachialis and brachioradialis.
â the force applied by the person (the muscle that is the agonist). E.g. for a bicep curl the elbow is the fulcrum, the biceps produce the effort and the dumbbell is the resistance. Levers. Second Class â resistance in the middle. Third Class â effort in the middle.