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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

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

Intravenous Fluid Use in Athletes - 0 views

www.ncbi.nlm.nih.gov/...PMC3435915

IV intravenous fluid nutrition athletes athlete sports medicine sports exercise

shared by Nathan Goodyear on 13 Jan 15 - No Cached
  • Treatment of exercise-associated hyponatremia with hypertonic IV infusion to correct plasma sodium levels is also a standard and accepted use of IV fluid infusions
  • athletes who present for medical care with hypernatremia who cannot tolerate oral fluids can benefit from IV fluids
  • Vaporization of sweat accounts for 80% of heat loss in hot, dry atmospheric conditions. This mechanism of water loss is the major contributor for exercise-associated dehydration
  • ...30 more annotations...
  • The rate of water loss can be quantified through measurement of sweat rate
  • Pre- and postexercise body weight measurements are the most common means to estimate overall water loss but are condition specific
  • It appears that 1% to 2% body weight loss is well tolerated by the exercising athlete
  • Dehydration, defined as greater than 2% loss of body weight, can negatively affect performance
  • In highly trained endurance athletes, plasma volume and sodium serum concentration were preserved despite a 5% body weight loss
  • In Ironman triathletes, dehydration to 5% body weight loss did not correlate with occurrence of medical complications
  • hydration should begin hours prior to exercise, especially if known deficits are present, and fluids should be consumed at a slow, steady rate, with 5 to 7 mL/kg taken 4 hours prior to exercise
  • Sodium concentration did not produce significant changes in the rate of absorption but was primarily dependent on carbohydrate concentration
  • Replacing 150% of body weight loss over 60 minutes has been tolerated without complications
  • IV treatment of severe dehydration (>7% body weight loss), exertional heat illness, nausea, emesis, or diarrhea, and in those who cannot ingest oral fluids for other reasons, is clinically indicated
  • A recent survey of the National Football League teams revealed that 75% (24 of 32) of the teams utilized IV infusion of fluids for prehydration in at least some otherwise healthy individuals
  • In the National Football League, an average of 1.5 L of normal saline was administered approximately 2.5 hours prior to competition
  • after 2 hours of exercise, the rectal temperature was 0.6° higher in the group not receiving IV infusion. Also, stroke volume and cardiac output were 11% to 16% lower in the control group versus the IV infusion group.
  • Recent evidence suggests the etiology of EAMC is related to muscle fatigue and neuronal excitability
  • no correlation between hydration status or electrolyte concentrations with EAMC
  • there may be a subset of muscle cramping that is associated with a loss of both body fluid and sodium
  • Glycerol is the primary agent for oral hyperhydration
  • elevation of plasma volume by 200 to 300 mL via dextran infusion resulted in 15% increase in stroke volume, 4% increase in VO2 max, and an increase in the exercise time to fatigue
  • Neither the tonicity nor mode of hydration resulted in improved speed of rehydration, greater fluid retention, or improved performance
  • There are beneficial anecdotal reports of EAMC treatment in elite and professional-level athletes with IV hydration during the course of an event
  • Plasma volume was better restored during rehydration with IV fluids at preexercise and 5 minutes of exercise. At 15 minutes, there was no difference between IV and oral rehydration
  • More rapid restoration of plasma volume was accomplished in the IV treatment group with no advantages over oral rehydration in physiological strain, heat tolerance, ratings of perceived effort, or thermal sensations
  • No difference was found in exercise time to exhaustion. IV and oral rehydration methods were equally effective. Heart rates were statistically higher in the oral rehydration group through 75 minutes of exercise, and there were higher increases in norepinephrine plasma concentrations
  • No significant differences between the groups were found for time to recovery, number of days with pain, number of days with stiffness, sleep disturbance, fatigue, rectal temperature, and loss of appetite
  • The current data suggest that IV rehydration is faster than oral
  • There may be physiological benefits of decreased heart rate and norepinephrine in athletes rehydrated via IV route
  • Postexercise blood 1 hour and 24 hours showed no differences in circulating myoglobin or creatine kinase
  • The use of IV fluid may be beneficial for a subset of fluid sensitive athletes
  • this should be reserved for high-level athletes with strong histories of symptoms in well-monitored settings.
  • Volume expanders may also be beneficial for some athletes
  • Nathan Goodyear on 13 Jan 15
     
    to be read
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

Recovery after heavy resistance exercise... [J Strength Cond Res. 2011] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...21311349

recovery resistance exercise training resistance training Testosterone Total free men male hormone hormones

shared by Nathan Goodyear on 03 Sep 14 - No Cached
  • Nathan Goodyear on 03 Sep 14
     
    "Heavy resistance exercise" associated with acute increase in TT and fT in men.  No changes were see in basal T and fT in recovery or AR.  The recovery phase was estimated to take 6 days.
Nathan Goodyear

Topical cooling (icing) delays recovery from eccentric exercise-ind... - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...22820210

icing exercise recovery training

shared by Nathan Goodyear on 18 Nov 14 - No Cached
  • Nathan Goodyear on 18 Nov 14
     
    Here is a study that goes against current dogma.  Ice in recovery for eccentric exercise slowed muscle damage repair and prolonged recovery.
Nathan Goodyear

Regulation of muscle glycogen repletion, muscle, protein synthesis and repair following... - 0 views

www.jssm.org/...v3n3-3pdf.pdf

exercise training exercise recovery recovery glycogen muscle protein amino acids carbohydrates

shared by Nathan Goodyear on 30 Apr 13 - No Cached
  • Nathan Goodyear on 30 Apr 13
     
    Nice study and review of other studies that looked at post-exercise recovery strategies. This authors conclusion, and I concur, is that a mixture of carb 0.8 g/kg and protein 0.2 g/kg mixture immediately and 2 hours post is the best to restore glycogen stores and promote an anabolic state
Nathan Goodyear

Carbohydrates and fat for training and recovery. - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...14971430

carbohydrates fat training recovery exercise recovery athlete athletes

shared by Nathan Goodyear on 10 Feb 16 - No Cached
  • Nathan Goodyear on 10 Feb 16
     
    only abstract available here.  Carbs, particularly high glycemic cars are helpful in recovery.  Carbs in the recovery are ket to restoration of muscle glycogen.  Immediate supplementation aids glycogen restorations compared to > 2 hours.  At 24 hours, there is no difference between early < 2h and delayed >2h; peak glycogen occurs at 24 h in this study.
Nathan Goodyear

ARTICLES | Journal of Applied Physiology - 0 views

jap.physiology.org/...japplphysiol.00429.2016

recovery exercise athletic performance athletic training athlete

shared by Nathan Goodyear on 13 Jun 16 - No Cached
  • Nathan Goodyear on 13 Jun 16
     
    Recovery doesn't just relate to exercise; recovery relates to travel.
Nathan Goodyear

http://www.biomed.cas.cz/physiolres/pdf/prepress/932627.pdf - 0 views

www.biomed.cas.cz/...932627.pdf

resistance training exercise resistance Testosterone cortisol men obese obesity hormone hormones

shared by Nathan Goodyear on 02 Sep 14 - No Cached
  • Nathan Goodyear on 02 Sep 14
     
    good discussion of the effects of resistance training on Testosterone and cortisol in obese men.  The literature is more more clear on the effects of resistance training on healthy men, but the evidence in obese men is less clear--likely due to the disrupted metabolism.
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.
Nathan Goodyear

Saliva cortisol, testosterone and T/C ratio... [Int J Sports Med. 1999] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...10190771

saliva salivary Testosterone athletes cortisol catabolic sports recovery T:C ratio

shared by Nathan Goodyear on 25 Apr 12 - No Cached
  • Nathan Goodyear on 25 Apr 12
     
    this study looked at salivary testosterone and cortisol in exercise recovery.  They found a low T/C ratio in this athletes.  This is a catabolic state.  A normalization of the a low T/C ratio will increase muscle recovery and should improve performance.  Testing was with saliva
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

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

PLOS ONE: Alcohol Ingestion Impairs Maximal Post-Exercise Rates of Myofibrillar Protein... - 0 views

www.plosone.org/...10.1371%2Fjournal.pone.0088384

alcohol exercise recovery training

shared by Nathan Goodyear on 26 Aug 14 - No Cached
  • Nathan Goodyear on 26 Aug 14
     
    makes sense.  Alcohol impairs recovery from exercise--specifically protein synthesis.
Nathan Goodyear

Dehydration, rehydration, and exercise in... [Can J Appl Physiol. 1999] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...10198144

exercise post-exercise rehydration

shared by Nathan Goodyear on 27 Nov 11 - No Cached
  • Nathan Goodyear on 27 Nov 11
     
    post exercise rehydration is important for adequate recovery
Nathan Goodyear

Thieme E-Journals - International Journal of Sports Medicine / Abstract - 0 views

www.thieme-connect.com/...s-2007-971102

competition sports exercise T:C testosterone cortisol recovery athlete athletics

shared by Nathan Goodyear on 19 Feb 13 - No Cached
  • Nathan Goodyear on 19 Feb 13
     
    competition versus recovery period in wrestling reveals different salivary hormone ratios. Competition results in low Testosterone to cortisol ratio versus the recovery phase which was found to be associated with a high testosterone to cortisol ratio.
Nathan Goodyear

Recovery from endurance exercise. - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...1406207

endurance exercise recovery carbohydrates glycogen

shared by Nathan Goodyear on 25 Nov 14 - No Cached
  • Nathan Goodyear on 25 Nov 14
     
    Carbohydrates required to restore muscle/liver glycogen stores.  This older article, abstract available, points to 8-10 grams of carbohydrates/kg body weight.  Though repletion of glycogen stores can occur, recovery of muscle performance may require longer time.  Studies have point to 4-6 days.
Nathan Goodyear

Short-term recovery from prolonged exercise: exploring the potential for protein ingest... - 0 views

opus.bath.ac.uk/21471

training exercise exercise recovery recovery athlete athletes carbohydrates protein

shared by Nathan Goodyear on 10 Feb 16 - No Cached
  • Nathan Goodyear on 10 Feb 16
     
    only abstract available here. early high glycemic carbs benefit fast glycogen restoration.  Adding protein at 0.3 g/kg aids glycogen restoration.
Nathan Goodyear

https://neogenissport.com/wp-content/uploads/2014/05/Beet-the-Competition.pdf - 0 views

neogenissport.com/...Beet-the-Competition.pdf

beets beet juice exercise recovery training

shared by Nathan Goodyear on 12 Jan 16 - No Cached
  • Nathan Goodyear on 12 Jan 16
     
    Beet juice for exercise performance and recovery.
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