Product Review

GNC AMP Mass XXX in chocolate is clinically proven See clinical study results below to help increase lean muscle mass, weight, strength and stamina with 40 fewer sets. This advanced muscle performance powder mix provides the right amount of carbs, quality proteins healthy fats to complement your training and achieve maximum gains. Benefits This protein powder contains 750 calories, 50g protein, 11g BCAA, and 3g Creatine Matrix to help achieve your massive gains. Contains fast, medium and slow digesting protein. li Contains an Anabaolic blend that combines clinically studied Betaine with HMB creating an anti-catabolic effect for your muscles to support athletic performance. Includes 3 forms of Creatine ingredients your body uses to make creatine to help improve training results support muscle protein synthesis. Contains faster absorbing key aminos for better muscle fuel to support muscle protein synthesis and key processes crucial to gaining mass. Clinical Study Results In an eight-week, randomized, double-blind, placebo-controlled study of healthy male volunteers, 18 subjects completed 3 sets of resistance training RT daily the macronutrient blend in Mass XXX, and 16 subjects performed 5 sets RT daily with no supplement. After eight weeks, subjects on the supplement showed equal gains in body weight, fat free mass FFM, maximal muscle strength MMS and muscle endurance ME with only 3 sets RT per day compared to the control group who completed 5 sets RT per day.