In this double-blind, placebo-controlled study, 20 untrained men were randomized to receive either 1.5 g/day of HMB or placebo for 2 weeks before performing eccentric elbow flexor exercise. Researchers measured muscle strength, range of motion, arm circumference, and muscle soreness for 5 days after exercise. The HMB group showed less reduction in muscle strength and better range of motion compared to placebo. The study suggests low-dose HMB may help support muscle function and joint flexibility following eccentric exercise.