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Gammal 2020-09-09, 12:51   #1
King Grub
Chefsarkitekt Oljebyxor
 
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Reg.datum: Mar 2002
Ort: Norrtälje
Inlägg: 78 267
Protein + BCAA motsvarar inte en större mängd protein med matchad mängd BCAA

när det gäller muskelproteinsyntes.

Citat:
Background

We have shown that ingesting a large bolus (70 g) of the fungal-derived, whole food mycoprotein robustly stimulates muscle protein synthesis (MPS) rates.

Objective

The aim of this study was to determine if a lower dose (35 g) of mycoprotein enriched with branched-chain amino acids (BCAAs) stimulates MPS to the same extent as 70 g of mycoprotein in resistance-trained young men.

Methods

Nineteen men [aged 22 ± 1 y, BMI (kg/m2): 25 ± 1] took part in a randomized, double-blind, parallel-group study. Participants received primed, continuous infusions of L-[ring-2H5]phenylalanine and ingested either 70 g mycoprotein (31.5 g protein; MYCO; n = 10) or 35 g BCAA-enriched mycoprotein (18.7 g protein: matched on BCAA content; ENR; n = 9) following a bout of unilateral resistance exercise. Blood and bilateral quadriceps muscle samples were obtained before exercise and protein ingestion and during a 4-h postprandial period to assess MPS in rested and exercised muscle. Two- and 3-factor ANOVAs were used to detect differences in plasma amino acid kinetics and mixed muscle fractional synthetic rates, respectively.

Postprandial plasma BCAA concentrations increased more rapidly and to a larger degree in ENR compared with MYCO. MPS increased with protein ingestion (P ≤ 0.05) but to a greater extent following MYCO (from 0.025% ± 0.006% to 0.057% ± 0.004% · h−1 in rested muscle, and from 0.024% ± 0.007% to 0.072% ± 0.005% · h−1 in exercised muscle; P < 0.0001) compared with ENR (from 0.031% ± 0.003% to 0.043% ± 0.005% · h−1 in rested muscle, and 0.027% ± 0.005% to 0.052% ± 0.005% · h−1 in exercised muscle; P < 0.01) ingestion. Postprandial MPS rates were greater in MYCO compared with ENR (P < 0.01).

Conclusions

The ingestion of lower-dose BCAA-enriched mycoprotein stimulates resting and postexercise MPS rates, but to a lesser extent compared with the ingestion of a BCAA-matched 70-g mycoprotein bolus in healthy young men.
The Journal of Nutrition, 04 September 2020. Branched-Chain Amino Acid Fortification Does Not Restore Muscle Protein Synthesis Rates following Ingestion of Lower- Compared with Higher-Dose Mycoprotein.
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Angående PM-rådgivning!
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Gammal 2020-09-09, 18:06   #2
ChuckTesta
Nope! Chuck Testa
 
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Reg.datum: Sep 2011
Inlägg: 674
Finns det något bra öht med BCAA i fri form?
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