What Is Potassium? Potassium is a mineral that, among other things, helps muscles contract, helps regulate fluids and mineral balance in and out of body cells, and helps maintain normal blood pressure by blunting the effect of sodium. Potassium also may reduce the risk of recurrent kidney stones and bone loss as we age.
Racking strength, simply explained, is the ability of a square or rectangular (wall) area to maintain its shape under duress. The picture below (from an old federal document testing racking strength) demonstrates what can happens with stress exceeds a wall's racking strength.acking strength, simply explained, is the ability of a square or rectangular (wall) area to maintain its shape under duress. The picture below (from an old federal document testing racking strength) demonstrates what can happens with stress exceeds a wall's racking strength.
repÂ·eÂ·tiÂ·tion maxÂ·iÂ·mum. Maximum load a muscle can lift for a predetermined number of repetitions to the point of fatigue. repetition maximum. The greatest amount of weight a person can lift ânâ number of times. The amount of weight that can be lifted exactly 10 times is 10 RM. The greatest amount of weight that can be lifted once is 1 RM. Repetition maximum can be used as a comparative measure of strength or as a technique in exercise prescription and strength training. During strength training 8 RM or 10 RM is used to develop strength, power, and muscle mass.