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Nathan Goodyear

Whey protein stimulates postprandial muscle protein accretion more effectively than do ... - 0 views

www.ajcn.org/...997.abstract

whey protein muscle building growth sarcopenic obesity men

shared by Nathan Goodyear on 13 Apr 12 - No Cached
  • Nathan Goodyear on 13 Apr 12
     
    whey protein (20 gm) shown to promote superior muscle growth in older men versus casein and casein hydrolysate.  Whey protein, in this study, was provided at meals, not as a post exercise support.
Nathan Goodyear

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

www.ncbi.nlm.nih.gov/...PMC3761704

exercise athlete athletes recovery exercise recovery training protein carbohydrates glycogen muscle

shared by Nathan Goodyear on 10 Feb 16 - No Cached
  • 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
  • ...11 more annotations...
  • 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., 2009) 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
  • Nathan Goodyear on 10 Feb 16
     
    Good review of recovery supplement strategy.
Nathan Goodyear

The Effects of Soy and Whey Protein Supplementation on Acute Hormonal Responses to Resi... - 0 views

www.tandfonline.com/...07315724.2013.770648

whey protein resistance training exercise Testosterone cortisol hormones soy

shared by Nathan Goodyear on 20 Oct 15 - No Cached
  • Nathan Goodyear on 20 Oct 15
     
    Recovery is key to muscle growth in resistance training. New study finds soy protein supplementation blunts Testosterone response in recovery and Whey protein blunts cortisol response in recovery. Conclusion: Whey protein to blunt cortisol response in recovery will aid anabolic recovery.
Nathan Goodyear

Cambridge Journals Online - Abstract - Effects of whey protein isolate on body composit... - 0 views

journals.cambridge.org/...displayAbstract

Whey protein elevated cholesterol insulin resistance diabetes

shared by Nathan Goodyear on 20 Jan 11 - No Cached
  • The present study demonstrated that supplementation with whey proteins improves fasting lipids and insulin levels in overweight and obese individuals.
  • Nathan Goodyear on 20 Jan 11
     
    Whey protein improves fasting lipids and insulin levels
Nathan Goodyear

Cambridge Journals Online - British Journal of Nutrition - Abstract - Post-exercise whe... - 0 views

journals.cambridge.org/...displayAbstract

Whey protein exercise recovery amino acids muscle nutrition

shared by Nathan Goodyear on 17 Sep 13 - No Cached
  • Nathan Goodyear on 17 Sep 13
     
    Whey protein hydrolysate shown to be superior to amino acids in recovery phase of exercise.  
Nathan Goodyear

Effects of Whey Peptides on Cardiovascular Disease Risk Factors - Pins - 2007 - The Jou... - 0 views

onlinelibrary.wiley.com/...full

whey protein blood pressure

shared by Nathan Goodyear on 07 Dec 10 - No Cached
  • Nathan Goodyear on 07 Dec 10
     
    whey protein lowers blood pressure
Nathan Goodyear

The Addition of Beta-hydroxy-beta-methylbutyrate and Isomaltulose to Whey Protein Impro... - 0 views

www.tandfonline.com/...07315724.2014.938790

whey protein resistance training exercise exercise recovery

shared by Nathan Goodyear on 20 Oct 15 - No Cached
  • Nathan Goodyear on 20 Oct 15
     
    Whey protein is beneficial as supplementation for resistance training recovery. This study found the addition of a leucine metabolite, beta-hydroxy-beta-methylbutyrate, and the carbohydrate Isomaltulose before, during, and after high intensity exercise further augmented recovery.
Nathan Goodyear

Biochemical and metabolic mechanisms by which... [J Nutr Biochem. 2012] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...22995389

whey protein obesity metabolic syndrome type II DM diabetes

shared by Nathan Goodyear on 24 Sep 12 - No Cached
  • Nathan Goodyear on 24 Sep 12
     
    Whey protein should be a tool in every medical provider to combat obesity and type II Diabetes.  The role? through improved insulin function: by interactions with cholecystokinin, peptide YY, incretins...
Nathan Goodyear

Timing Protein Intake Increases Energy Expenditure 24 h afte... : Medicine & Science in... - 0 views

journals.lww.com/...ses_Energy_Expenditure.21.aspx

whey protein energy sports exercise

shared by Nathan Goodyear on 13 Apr 12 - No Cached
  • Nathan Goodyear on 13 Apr 12
     
    protein supplementation (compared to carbohydrates)  prior to heavy resistance training resulted in prolonged increase in resting energy expenditure at 24 hours.  The supplementation in this study was 18 grams of whey protein.  This study reveals the lingering effect of diet on benefits of exercise.
Nathan Goodyear

Protein Ingestion Prior To Sleep Improv... [Med Sci Sports Exerc. 2012] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...22330017

whey protein exercise post-exercise recovery support muscle sports

shared by Nathan Goodyear on 13 Apr 12 - No Cached
  • Nathan Goodyear on 13 Apr 12
     
    protein intake post exercise improves recovery. In this study, they had young men take in 20 gm of protein prior to bed after resistance training at 8 pm.
Nathan Goodyear

Nutritional regulation of muscle protein synthesis with resistance exercise: strategies... - 0 views

www.nutritionandmetabolism.com/...1743-7075-9-40.pdf

exercise athletic training protein proteins whey muscle muscle protein synthesis MPS

shared by Nathan Goodyear on 20 Jul 12 - No Cached
  • Nathan Goodyear on 20 Jul 12
     
    This study proposes that immediate post-resistance training protein helps to stimulate muscle growth. Recovery from training is just as important as the training itself.
Nathan Goodyear

Branched Chain Amino Acid Supplementation for Patients with Cirrhosis | Clinical Correl... - 0 views

www.clinicalcorrelations.org/?p=3544

BCCA branched chain amino acids liver cirrhosis hepatitis amino acids

shared by Nathan Goodyear on 05 Oct 15 - No Cached
  • low level of BCAAs in patients with cirrhosis is hypothesized to be one of multiple factors responsible for development of hepatic encephalopathy
  • supplementation of BCAAs is thought to facilitate ammonia detoxification by supporting synthesis of glutamine, one of the non-branched chain amino acids, in skeletal muscle and in the brain as well as diminishing the influx of AAAs across the blood-brain barrier
  • oral BCAA supplementation is more useful in chronic encephalopathic patients than is parenteral BCAA supplementation in patients with acute encephalopathy
  • ...35 more annotations...
  • malnutrition progressing to cachexia is another common manifestation of cirrhosis
  • Malnutrition can be mitigated with BCAA supplementation
  • Studies show that administration of amino acid formulas enriched with BCAAs can reduce protein loss, support protein synthesis, and improve nutritional status of patients with chronic liver disease
  • Leucine has been shown to be the most effective of the BCAAs because it acts via multiple pathways to stimulate protein synthesis
  • BCAAs metabolites inhibit proteolysis
  • Patients with cirrhosis have both insulin deficiency and insulin resistance
  • BCAAs (particularly leucine) help to reverse the catabolic, hyperglucagonemic state of cirrhosis both by stimulating insulin release from the pancreatic β cells and by decreasing insulin resistance allowing for better glucose utilization
  • Coadministration of BCAAs and glucose has been found to be particularly useful
  • BCAA supplementation improves protein-energy malnutrition by improving utilization of glucose, thereby diminishing the drive for proteolysis, inhibiting protein breakdown, and stimulating protein synthesis
  • Cirrhotic patients have impaired immune defense, characterized by defective phagocytic activity and impaired intracellular killing activity
  • another effect of BCAA supplementation is improvement of phagocytic function of neutrophils and possibly improvement in natural killer T (NKT) cell lymphocyte activity
  • BCAA supplementation may reduce the risk of infection in patients with advanced cirrhosis not only through improvement in protein-energy malnutrition but also by directly improving the function of the immune cells themselves
  • BCAA administration has also been shown to have a positive effect on liver regeneration
  • A proposed mechanism for improved liver regeneration is the stimulatory effect of BCAAs (particularly leucine) on the secretion of hepatocyte growth factor by hepatic stellate cells
  • BCAAs activate rapamycin signaling pathways which promotes albumin synthesis in the liver as well as protein and glycogen synthesis in muscle tissue
  • Chemical improvement with BCAA treatment is demonstrated by recovery of serum albumin and lowering of serum bilirubin levels
  • long-term oral BCAA supplementation was useful in staving off malnutrition and improving survival by preventing end-stage fatal complications of cirrhosis such as hepatic failure and gastrointestinal bleeding
  • The incidence of death by any cause, development of liver cancer, rupture of esophageal varices, or progression to hepatic failure was decreased in the group that received BCAA supplementation
  • Patients receiving BCAA supplementation also have a lower average hospital admission rate, better nutritional status, and better liver function tests
  • patients taking BCAA supplementation report improved quality of life
  • BCAAs have been shown to mitigate hepatic encephalopathy, cachexia, and infection rates, complications associated with the progression of hepatic cirrhosis
  • BCAAs make up 20-25% of the protein content of most foods
  • Highest levels are found in casein whey protein of dairy products and vegetables, such as corn and mushrooms. Other sources include egg albumin, beans, peanuts and brown rice bran
  • In addition to BCAAs from diet, oral supplements of BCAAs can be used
  • Oral supplementation tends to provide a better hepatic supply of BCAAs for patients able to tolerate PO nutrition as compared with IV supplementation, especially when treating symptoms of hepatic encephalopathy
  • Coadministration of BCAAs with carnitine and zinc has also been shown to increase ammonia metabolism further reducing the encephalopathic symptoms
  • Cirrhotic patients benefit from eating frequent, small meals that prevent long fasts which place the patient in a catabolic state
  • the best time for BCAA supplementation is at bedtime to improve the catabolic state during starvation in early morning fasting
  • A late night nutritional snack reduces symptoms of weakness and fatigability, lowers postprandial hyperglycemia, increases skeletal muscle mass,[25] improves nitrogen balance, and increases serum albumin levels.[26] Nocturnal BCAAs even improve serum albumin in cirrhotic patients who show no improvement with daytime BCAAs
  • Protein-energy malnutrition (PEM), with low serum albumin and low muscle mass, occurs in 65-90% of cases of advanced cirrhosis
  • hyperglucagonemia results in a catabolic state eventually producing anorexia and cachexia
  • BCAAs are further depleted from the circulation due to increased uptake by skeletal muscles that use the BCAAs in the synthesis of glutamine, which is produced in order to clear the ammonia that is not cleared by the failing liver
  • patients with chronic liver disease, particularly cirrhosis, routinely have decreased BCAAs and increased aromatic amino acids (AAAs) in their circulation
  • Maintaining a higher serum albumin in patients with cirrhosis is associated with decreased mortality and improved quality of life
  • the serum BCAA concentration is strongly correlated with the serum albumin level
  • Nathan Goodyear on 05 Oct 15
     
    great review of cirrhosis and BCCA supplementation.
Nathan Goodyear

Frontiers | Branched-Chain Amino Acid Ingestion Stimulates Muscle Myofibrillar Protein ... - 1 views

journal.frontiersin.org/...full

BCAA amino acids resistance training exercise recovery exercise muscle

shared by Nathan Goodyear on 18 Jul 17 - No Cached
  • BCAAs exhibit the capacity to stimulate myofibrillar-MPS, however a full complement of EAA could be necessary to stimulate a maximal response of myofibrillar-MPS following resistance exercise
  • This information potentially has important nutritional implications for selecting amino acid supplements to facilitate skeletal muscle hypertrophy in response to resistance exercise training and the maintenance of muscle mass during aging, unloading, or disease
  • results from the present study suggest that ingesting BCAAs alone, without the other EAA, provides limited substrate for protein synthesis in exercised muscles
  • ...3 more annotations...
  • the overall response of MPS is not maximized. Instead, the limited availability of EAA likely explains the qualitative difference in magnitude of the MPS response to ingestion of BCAAs alone and ingestion of similar amounts of BCAAs as part of intact whey protein
  • decreased EAA concentrations following leucine ingestion
  • these data support the notion that EAA availability is the rate-limiting factor for stimulating a maximal MPS response to resistance exercise with BCAA ingestion
  • Nathan Goodyear on 18 Jul 17
     
    Complete amino acid supplementation exceeds muscle building capacity (myofibrillar-MPS) over BCAA alone.
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