TY - JOUR
T1 - Ingestion of mycoprotein, pea protein, and their blend support comparable postexercise myofibrillar protein synthesis rates in resistance-trained individuals
AU - West, Sam
AU - Monteyne, Alistair J.
AU - Whelehan, Gráinne
AU - van der Heijden, Ino
AU - Abdelrahman, Doaa R.
AU - Murton, Andrew J.
AU - Finnigan, Tim J.A.
AU - Stephens, Francis B.
AU - Wall, Benjamin T.
N1 - Publisher Copyright:
© 2023 American Physiological Society. All rights reserved.
PY - 2023/9
Y1 - 2023/9
N2 - Pea protein is an attractive nonanimal-derived protein source to support dietary protein requirements. However, although high in leucine, a low methionine content has been suggested to limit its anabolic potential. Mycoprotein has a complete amino acid profile which, at least in part, may explain its ability to robustly stimulate myofibrillar protein synthesis (MyoPS) rates. We hypothesized that an inferior postexercise MyoPS response would be seen following ingestion of pea protein compared with mycoprotein, which would be (partially) rescued by blending the two sources. Thirty-three healthy, young [age: 21 ± 1 yr, body mass index (BMI): 24 ± 1 kg·m2] and resistance-trained participants received primed, continuous infusions of L-[ring-2H5]phenylalanine and completed a bout of whole body resistance exercise before ingesting 25 g of protein from mycoprotein (MYC, n ¼ 11), pea protein (PEA, n ¼ 11), or a blend (39% MYC, 61% PEA) of the two (BLEND, n ¼ 11). Blood and muscle samples were taken pre-, 2 h, and 4 h postexercise/protein ingestion to assess postabsorptive and postprandial postexercise myofibrillar protein fractional synthetic rates (FSRs). Protein ingestion increased plasma essential amino acid and leucine concentrations (time effect; P < 0.0001), but more rapidly in BLEND and PEA compared with MYC (time condition interaction; P < 0.0001). From similar postabsorptive values (MYC, 0.026 ± 0.008%·h-1; PEA, 0.028 ± 0.007%·h-1; BLEND, 0.026 ± 0.006%·h1), resistance exercise and protein ingestion increased myofibrillar FSRs (time effect; P < 0.0001) over a 4-h postprandial period (MYC, 0.076 ± 0.004%·h1; PEA, 0.087 ± 0.01%·h1; BLEND, 0.085 ± 0.01%·h1), with no differences between groups (all; P > 0.05). These data show that all three nonanimal-derived protein sources have utility in supporting postexercise muscle reconditioning.
AB - Pea protein is an attractive nonanimal-derived protein source to support dietary protein requirements. However, although high in leucine, a low methionine content has been suggested to limit its anabolic potential. Mycoprotein has a complete amino acid profile which, at least in part, may explain its ability to robustly stimulate myofibrillar protein synthesis (MyoPS) rates. We hypothesized that an inferior postexercise MyoPS response would be seen following ingestion of pea protein compared with mycoprotein, which would be (partially) rescued by blending the two sources. Thirty-three healthy, young [age: 21 ± 1 yr, body mass index (BMI): 24 ± 1 kg·m2] and resistance-trained participants received primed, continuous infusions of L-[ring-2H5]phenylalanine and completed a bout of whole body resistance exercise before ingesting 25 g of protein from mycoprotein (MYC, n ¼ 11), pea protein (PEA, n ¼ 11), or a blend (39% MYC, 61% PEA) of the two (BLEND, n ¼ 11). Blood and muscle samples were taken pre-, 2 h, and 4 h postexercise/protein ingestion to assess postabsorptive and postprandial postexercise myofibrillar protein fractional synthetic rates (FSRs). Protein ingestion increased plasma essential amino acid and leucine concentrations (time effect; P < 0.0001), but more rapidly in BLEND and PEA compared with MYC (time condition interaction; P < 0.0001). From similar postabsorptive values (MYC, 0.026 ± 0.008%·h-1; PEA, 0.028 ± 0.007%·h-1; BLEND, 0.026 ± 0.006%·h1), resistance exercise and protein ingestion increased myofibrillar FSRs (time effect; P < 0.0001) over a 4-h postprandial period (MYC, 0.076 ± 0.004%·h1; PEA, 0.087 ± 0.01%·h1; BLEND, 0.085 ± 0.01%·h1), with no differences between groups (all; P > 0.05). These data show that all three nonanimal-derived protein sources have utility in supporting postexercise muscle reconditioning.
KW - muscle protein synthesis
KW - mycoprotein
KW - pea protein
KW - protein blend
KW - resistance exercise
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U2 - 10.1152/ajpendo.00166.2023
DO - 10.1152/ajpendo.00166.2023
M3 - Article
C2 - 37529834
AN - SCOPUS:85168807461
SN - 0193-1849
VL - 325
SP - E267-E279
JO - American Journal of Physiology - Endocrinology and Metabolism
JF - American Journal of Physiology - Endocrinology and Metabolism
IS - 3
ER -