In this double-blind, placebo-controlled study, 28 untrained men were randomized to receive 3 g/day of HMB for either 2 or 4 weeks, or a placebo, before completing eccentric elbow flexor exercise. Researchers measured muscle strength, range of motion, arm circumference, soreness, and stiffness after exercise. Both HMB groups showed better maintenance of muscle strength and range of motion, along with less arm swelling and stiffness compared to placebo. The study suggests that at least 2 weeks of HMB supplementation may help support recovery after eccentric exercise.