Many studies have shown that animal-derived protein has a different effect on muscle growth compared to plant-based protein.
However, one study from 2013 investigated the effects of higher doses of rice protein, compared to equally high doses of whey protein on skeletal muscle hypertrophy, lean body mass, strength and power when given following eight weeks of periodic resistance training (RT) in those individuals with previous RT experience.
Twenty-four healthy, college-aged, resistance-trained subjects consumed 48g of rice protein isolate (derived from wholegrain brown rice) or whey protein isolate immediately after training for eight weeks. Muscle gain, degree of muscle repair and muscle soreness were measured.
Results showed that rice protein isolate, when administered post resistance exercise, decreased fat mass and increased lean body mass, muscle hypertrophy, power and strength comparable to whey protein isolate.
In addition, rice protein isolate is notably a suitable protein supplement option for lactose intolerant athletes.
- Joy JM, Lowery RP, Wilson JM, et al. The effects of 8 weeks of whey or rice protein supplementation on body composition and exercise performance. Nutr J 2013;12:86 [Full Text]