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Mung Bean Protein Supplement Improves Muscular Strength in Healthy, Underactive Vegetarian Adults

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College of Health Solutions, Nutrition Program, Arizona State University, 550 N. 3rd St., Phoenix, AZ 85004, USA
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College of Health Solutions, Radical Simplicity Lab, Arizona State University, 550 N. 3rd St., Phoenix, AZ 85004, USA
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Author to whom correspondence should be addressed.
Nutrients 2019, 11(10), 2423; https://doi.org/10.3390/nu11102423
Received: 29 August 2019 / Revised: 19 September 2019 / Accepted: 5 October 2019 / Published: 11 October 2019
Although vegetarian diets are considered generally protective against chronic disease, nutrient deficiencies, including protein, are possible due to low bioavailability from plant-based sources. The consequences of inadequate dietary protein include reduced lean body mass (LBM) and muscle weakness. This study examined relationships between protein intake, strength, and LBM in 37 underactive vegetarians and recorded the impact of protein supplementation (18 g/day mung bean protein) on these indices utilizing an eight-week, randomized, controlled, feeding trial. Both handgrip and knee flexor and extensor strength were measured at baseline and week eight. At baseline, LBM was significantly related to grams of protein consumed daily. LBM was also correlated to grip strength (r = 0.569, p < 0.001) and lower body strength (r = 0.763 to 0.784; p < 0.001). Twenty-five vegetarians completed the feeding trial, including 11 in the protein supplementation group (PRO) and 14 in the control group (CON). At the end of the trial, LBM and strength did not differ significantly between groups. However, the average percent change for grip, flexor, and extensor strength did differ between PRO and CON participants (+2.9 ± 7.2% and −2.6 ± 7.3% respectively, p = 0.05). Thus, there were strong associations between dietary protein, LBM, and strength in vegetarians and an indication that supplementary vegetarian protein increased strength in the absence of exercise and independent of LBM. View Full-Text
Keywords: vegetarian; vegan; mung bean protein; lean body mass; muscular strength vegetarian; vegan; mung bean protein; lean body mass; muscular strength
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Bartholomae, E.; Incollingo, A.; Vizcaino, M.; Wharton, C.; Johnston, C.S. Mung Bean Protein Supplement Improves Muscular Strength in Healthy, Underactive Vegetarian Adults. Nutrients 2019, 11, 2423.

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