il post wo nelle donne: può essere deleterio!

[°°sOmOja°°]

per completezza posto una fonte in cui si dimostrerebbe (come accennavo nel mio primo post) che la co-assunzione di carboidrati e proteine non è realmente indispensabile per stimolare la sintesi proteica

http://ajpendo.physiology.org/cgi/co...ort/293/3/E833

Am J Physiol Endocrinol Metab 293: E833-E842, 2007. First published July 3, 2007; doi:10.1152/ajpendo.00135.2007
0193-1849/07 $8.00

Coingestion of carbohydrate with protein does not further augment postexercise muscle protein synthesis
René Koopman,1 Milou Beelen,1 Trent Stellingwerff,1 Bart Pennings,1 Wim H. M. Saris,2 Arie K. Kies,3 Harm Kuipers,1 and Luc J. C. van Loon1,2

Departments of 1Movement Sciences and 2Human Biology, Nutrition and Toxicology Research Institute Maastricht, Maastricht University, Maastricht; and 3DSM Food Specialties, R&D, Biochemistry and Nutrition Department, Delft, The Netherlands

Submitted 28 February 2007 ; accepted in final form 1 July 2007

The present study was designed to assess the impact of coingestion of various amounts of carbohydrate combined with an ample amount of protein intake on postexercise muscle protein synthesis rates. Ten healthy, fit men (20 ± 0.3 yr) were randomly assigned to three crossover experiments. After 60 min of resistance exercise, subjects consumed 0.3 g·kg–1·h–1 protein hydrolysate with 0, 0.15, or 0.6 g·kg–1·h–1 carbohydrate during a 6-h recovery period (PRO, PRO + LCHO, and PRO + HCHO, respectively). Primed, continuous infusions with L-[ring-13C6]phenylalanine, L-[ring-2H2]tyrosine, and [6,6-2H2]glucose were applied, and blood and muscle samples were collected to assess whole body protein turnover and glucose kinetics as well as protein fractional synthesis rate (FSR) in the vastus lateralis muscle over 6 h of postexercise recovery. Plasma insulin responses were significantly greater in PRO + HCHO compared with PRO + LCHO and PRO (18.4 ± 2.9 vs. 3.7 ± 0.5 and 1.5 ± 0.2 U·6 h–1·l–1, respectively, P < 0.001). Plasma glucose rate of appearance (Ra) and disappearance (Rd) increased over time in PRO + HCHO and PRO + LCHO, but not in PRO. Plasma glucose Ra and Rd were substantially greater in PRO + HCHO vs. both PRO and PRO + LCHO (P < 0.01). Whole body protein breakdown, synthesis, and oxidation rates, as well as whole body protein balance, did not differ between experiments. Mixed muscle protein FSR did not differ between treatments and averaged 0.10 ± 0.01, 0.10 ± 0.01, and 0.11 ± 0.01%/h in the PRO, PRO + LCHO, and PRO + HCHO experiments, respectively. In conclusion, coingestion of carbohydrate during recovery does not further stimulate postexercise muscle protein synthesis when ample protein is ingested.

[menphisdaemon]

Ottimo studio Claudio..chissà che ora la gente capisca il perchè predico l'inesistenza della finestra così come viene comunemente intesa.

Postalo in informazione scientifica!!!

Con gli studi che fai per l'uni potresti postarne più spesso

[orudozac]

In conclusion, coingestion of carbohydrate during recovery does not further stimulate postexercise muscle protein synthesis when ample protein is ingested.[/COLOR][/B]

Sull'assunzione di carboidrati subito dopo i pesi/aerobico per ripristinare le scorte in caso di un secondo allenamento (pesi/aerobico) nel giorno stesso cosa dici? Rispetto cioé ad attendere il successivo pasto completo entro mettiamo un'ora.

[°°sOmOja°°]

in teoria l'assunzione di carboidrati nell'immediato post-workout ottimizza la risintesi del glicogeno, a quanto pare indipendentemente dal tipo di carboidrato che usi (semplice o complesso, fà eccezione il fruttosio)