Skrevet av Emne: Effekter fra proteininntak på styrke...  (Lest 6370 ganger)

Utlogget Burrhus

  • Erfaren bruker
  • ****
  • Innlegg: 362
  • Honnør: 184
  • Utlogget Utlogget

  • Kjønn: Mann
  • Innlegg: 362

Effekter fra proteininntak på styrke...
« : 08. november 2009, 21:29 »
Effekter av proteininntak på styrke, kroppskomposisjon og endokrine endringer hos styrkeutøvere:

http://www.ncbi.nlm.nih.gov/pubmed/18500968?itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum&ordinalpos=27

Effect of protein intake on strength, body composition and endocrine changes in strength/power athletes.

Hoffman JR, Ratamess NA, Kang J, Falvo MJ, Faigenbaum AD.

The College of New Jersey, Ewing, NJ. hoffmanj@tcnj.edu.

ABSTRACT : Comparison of protein intakes on strength, body composition and hormonal changes were examined in 23 experienced collegiate strength/power athletes participating in a 12-week resistance training program. Subjects were stratified into three groups depending upon their daily consumption of protein; below recommended levels (BL; 1.0 - 1.4 g.kg-1.day-1; n = 8), recommended levels (RL; 1.6 - 1.8 g.kg-1.day-1; n = 7) and above recommended levels (AL; > 2.0 g.kg-1.day-1; n = 8). Subjects were assessed for strength [one-repetition maximum (1-RM) bench press and squat] and body composition. Resting blood samples were analyzed for total testosterone, cortisol, growth hormone, and insulin-like growth factor. No differences were seen in energy intake (3,171 +/- 577 kcal) between the groups, and the energy intake for all groups were also below the recommended levels for strength/power athletes. No significant changes were seen in body mass, lean body mass or fat mass in any group. Significant improvements in 1-RM bench press and 1-RM squat were seen in all three groups, however no differences between the groups were observed. Subjects in AL experienced a 22% and 42% greater change in Delta 1-RM squat and Delta 1-RM bench press than subjects in RL, however these differences were not significant. No significant changes were seen in any of the resting hormonal concentrations. The results of this study do not provide support for protein intakes greater than recommended levels in collegiate strength/power athletes for body composition improvements, or alterations in resting hormonal concentrations.



Gå til:  

Dette er 500 kcal!

Sunn proteinrik julebakst

Kosthold05.12.2019247

Er du i gang med bakingen til jul? Prøv dette.
Se studien.
Her ser du 45 forskjellige idretter med trente kropper.

Hvor sunn er egentlig bananen?

Kosthold30.11.2019111

Treningsmat eller sukkerbombe? Det er mange meninger om denne gule frukten.