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Nathan Goodyear

The Role of Post-Exercise Nutrient Administration on Muscle Protein Synthesis and Glyco... - 0 views

  • Whey protein was superior to that of casein in upregulating protein synthesis
  • ability to digest more rapidly than casein protein
  • Free form amino acid ingestion acts similarly to whey by displaying a rapid and strong increase in aminoacidemia
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  • it appears that protein synthesis rapidly increases for up to two hours after amino acid administration
  • The intervention of dietary protein or amino acid supplementation in conjunction with resistance training has proven to effectively increase protein synthesis rates
  • 291% increase in protein synthesis following the exercise bout, while protein degradation remained unchanged from baseline quantities
  • it has been established that post-exercise EAA supplementation stimulates protein synthesis, in conjunction with a positive protein balance, comparable to that of intravenous infusion of amino acids
  • Casein and whey protein ingestion yielded similar values of net positive protein balance, and thus an overall increase in protein synthesis
  • A later analysis revealed that soy protein increased protein synthesis in rats similar to that of whey after a treadmill exercise protocol
  • A human trial, however, concluded that milk proteins (caseins and whey) in comparison to soy promoted greater muscle protein accretion when they were ingested after regular resistance training
  • Whey hydrolysate ingested after a resistance exercise bout acutely stimulated mixed muscle protein synthesis 31% greater than soy
  • adequate amount of protein (20 g) is ingested (Tipton et al., ) immediately before or after a resistance exercise bout
  • The rapid phase lasts approximately 30-60 minutes and does not require the presence of insulin
  • slow phase, which can last up to several hours if carbohydrate availability is high and insulin levels remain elevated
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    Good review of recovery supplement strategy.
Nathan Goodyear

Effects of aromatase inhibition vs. testosterone in older men with low testosterone: ra... - 0 views

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    No surprise that Testosterone therapy improves Testosterone levels in men with low T, but aromatase inhibition (AI) did as well.  In this study, only lean mass increased compared to Testosterone therapy and placebo.  Strength increased in both Testosterone and AI.
Nathan Goodyear

International Journal of Obesity - Identification of skeletal muscle mass depletion acr... - 0 views

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    good article to review the components of body composition.
Nathan Goodyear

Interorgan ammonia trafficking in liver disease. - PubMed - NCBI - 0 views

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    The primary metabolizer of ammonia is the liver; however, in liver failure, muscle mass becomes a second means to metabolize excessive ammonia.
Nathan Goodyear

The Effects of Pre-Exercise Ginger Supplementation on Muscle Damage and Delayed Onset M... - 0 views

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    Could Ginger be aid in recovery?  Results are mixed.  Study finds 4 g of ginger improves strength in muscle recovery, yet no change in muscle biomarkers.
Nathan Goodyear

Changes in Weight, Body Composition, and Factors Influencing Energy Balance Among Preme... - 0 views

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    study finds weight gain in premenopausal breast cancer survivors on adjuvant chemo is due to sarcopenia.
Nathan Goodyear

Vitamin D Lower In NFL Football Players Who Suffered Muscled Injuries, Study Reports - 0 views

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    NFL players with low vitamin D levels have increased risk of muscle injuries.
Nathan Goodyear

Low serum 25 (OH) vitamin D levels (<32 ng/mL) are associated with reversible myositis-... - 0 views

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    vitamin D reduces muscle pain associated with statin therapy.
Nathan Goodyear

Low Vitamin D Status Has an Adverse Influence on Bone Mass, Bone Turnover, and Muscle S... - 0 views

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    normal versus low vitamin D in adolescent girls is found to be associated with increased grip strenght and lower bone turnover with increased bone mass.
Nathan Goodyear

Vitamin D status and muscle function in post-menarchal adolescent girls. - PubMed - NCBI - 0 views

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    vitamin D directly correlates with muscle force and power in adolescent girls performing fitness test.
Nathan Goodyear

http://www.dartmouthsports.com/pdf9/2320586.pdf - 0 views

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    great review of the science on vitamin D and sports injury and performance physiology.
Nathan Goodyear

High aromatase activity in hypogonadal men is associated with higher spine bone mineral... - 0 views

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    Only abstract available here--high Estradiol:Testosterone, thus high aromatase activity, increased abdominal fat and reduced lean muscle mass.  The authors also reported an higher bone mineral density, but that pales in the comparison of the metabolic dysfunction of high fat and low muscle mass causes.
Nathan Goodyear

Effects of Resistance Training on Testosterone Metabolism in Younger and Older Men. - P... - 0 views

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    Resistance training increases Testosterone in younger and older men.  The effects in older men appears to involve more of a decreased metabolism.  
Nathan Goodyear

Testosterone-induced muscle hypertrophy is associated with an increase in satellite cel... - 0 views

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    Testosterone increases muscle satellite cells in men.
Nathan Goodyear

http://www.uclouvain.be/cps/ucl/doc/ir-ldri/images/BINDELS2013IJBCLB.pdf - 0 views

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    gut microflora and its impact on muscle loss/muscle growth.  Not just for lean versus fat evaluation.
Nathan Goodyear

Effects of Age and Sedentary Lifestyle on Skeletal Muscle NF-κB Signaling in Men - 0 views

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    Aging and sedentary lifestyle associated with muscle loss through NF-KappaB activation.
Nathan Goodyear

Regulation of muscle mass by growth hormone and IGF-I - 0 views

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    good review of GH and IGF-1 impact on muscle growth/muscle loss.
Nathan Goodyear

Fundamental Aspects of Hypogonadism in the Aging Male - 0 views

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    good discussion of low T effect on a man's metabolism: particularly muscle mass.
Nathan Goodyear

Interrelationships of serum testosterone and free testosterone index with FFM and stren... - 0 views

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    Free Testosterone is better indicator of muscle strength than total Testosterone--in this case, free Testosterone index.
Nathan Goodyear

Relationship between low free testosterone levels and loss of muscle mass. - PubMed - NCBI - 0 views

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    low free Testosterone associated with muscle loss in men compared to no association with total Testosterone in Japanese men.
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