Kolozzeum Forum - Sveriges största träningsforum
Gå tillbaka   Kolozzeum Forum - Sveriges största träningsforum > Träning > Kosttillskott

Svara
 
Ämnesverktyg Visningsalternativ
Gammal 2018-09-24, 22:43   #1
King Grub
Chefsarkitekt Oljebyxor
 
King Grubs avatar
 
Reg.datum: Mar 2002
Ort: Norrtälje
Inlägg: 78 268
Proteintillskott efter träning och före sömn ger ingen extra muskeltillväxt hos äldre

Citat:
Background

The proposed benefits of protein supplementation on the skeletal muscle adaptive response to resistance exercise training in older adults remain unclear.

Objective

The present study assessed whether protein supplementation after exercise and before sleep augments muscle mass and strength gains during resistance exercise training in older individuals.

Methods

Forty-one older men [mean ± SEM age: 70 ± 1 y; body mass index (kg/m2): 25.3 ± 0.4] completed 12 wk of whole-body resistance exercise training (3 sessions/wk) and were randomly assigned to ingest either protein (21 g protein, 3 g total leucine, 9 g carbohydrate, 3 g fat; n = 21) or an energy-matched placebo (0 g protein, 25 g carbohydrate, 6 g fat; n = 20) after exercise and each night before sleep. Maximal strength was assessed by 1-repetition-maximum (1RM) strength testing, and muscle hypertrophy was assessed at the whole-body (dual-energy X-ray absorptiometry), upper leg (computed tomography scan), and muscle fiber (biopsy) levels. Muscle protein synthesis rates were assessed during week 12 of training with the use of deuterated water (2H2O) administration.

Results

Leg-extension 1RM increased in both groups (placebo: 88 ± 3 to 104 ± 4 kg; protein: 85 ± 3 to 102 ± 4 kg; P < 0.001), with no differences between groups. Quadriceps cross-sectional area (placebo: 67.8 ± 1.7 to 73.5 ± 2.0 cm2; protein: 68.4 ± 1.4 to 72.3 ± 1.4 cm2; P < 0.001) increased in both groups, with no differences between groups. Muscle fiber hypertrophy occurred in type II muscle fibers (placebo: 5486 ± 418 to 6492 ± 429 µm2; protein: 5367 ± 301 to 6259 ± 391 µm2; P < 0.001), with no differences between groups. Muscle protein synthesis rates were 1.62% ± 0.06% and 1.57% ± 0.05%/d in the placebo and protein groups, respectively, with no differences between groups.

Conclusion

Protein supplementation after exercise and before sleep does not further augment skeletal muscle mass or strength gains during resistance exercise training in active older men.
Protein Supplementation after Exercise and before Sleep Does Not Further Augment Muscle Mass and Strength Gains during Resistance Exercise Training in Active Older Men. The Journal of Nutrition, 24 September 2018.
__________________


Angående PM-rådgivning!
King Grub är inte uppkopplad   Svara med citat
Gammal 2018-09-25, 15:41   #2
Lars91
Registered User
 
Reg.datum: Sep 2018
Inlägg: 13
Hur mycket protein åt de totalt i icke-protein-gruppen?
Lars91 är inte uppkopplad   Svara med citat
Gammal 2018-09-27, 12:38   #3
BMiTMi
Registered User
 
Reg.datum: Feb 2016
Ort: Uppsala
Inlägg: 5
Citat:
Ursprungligen postat av Lars91 Visa inlägg
Hur mycket protein åt de totalt i icke-protein-gruppen?
Jag blev också nyfiken på hur dieterna såg ut i övrigt.
BMiTMi är inte uppkopplad   Svara med citat


Svara

Ämnesverktyg
Visningsalternativ

Regler för att posta
Du får inte posta nya ämnen
Du får inte posta svar
Du får inte posta bifogade filer
Du får inte redigera dina inlägg

BB-kod är
Smilies är
[IMG]-kod är
HTML-kod är av

Forumhopp


Alla tider är GMT +1. Klockan är nu 02:52.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Svensk översättning av: Anders Pettersson
Copyright 2015, Kolozzeum (TM)