The type of protein you eat after intense physical training can significantly impact recovery, according to new research from Texas A&M University’s Department of Kinesiology and Sport Management.
The study, led by Richard Kreider, a researcher with over 30 years of experience studying creatine and sports nutrition, examined how different protein sources in military-style meals ready-to-eat affected recovery in members of Texas A&M’s Corps of Cadets after completing the Army Combat Fitness Test.
Creatine — a compound stored in muscle and essential for cellular energy production and recovery — is most abundant in animal-based protein like meat and fish. While the recommended daily intake ranges from 2 to 4 grams, depending on muscle mass and activity level, most individuals fall short, especially those following vegetarian or vegan diets. Combined with a lack of essential amino acids, this can make recovery after intense training difficult for vegetarians and vegans.
The 2023 MRE meal plan includes nine plant-based options and 14 animal-based menus, with only one featuring pork as the primary protein. Because pork is particularly rich in both creatine and essential amino acids, researchers compared recovery outcomes between pork-based and plant-based MREs to determine whether protein source influences recovery.