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Nathan Goodyear

Creatine Supplementation and Swim Performance: A Brief Review - 0 views

www.ncbi.nlm.nih.gov/...PMC3818661

creatine swimming performance sports

shared by Nathan Goodyear on 27 Jan 14 - No Cached
  • Nathan Goodyear on 27 Jan 14
     
    Creatine improves swimming performance.  The majority of studies have been on freestyle.
Nathan Goodyear

Combined creatine and sodium bicarbonate... [J Strength Cond Res. 2004] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...15142001

creatine swim swimming sports performance

shared by Nathan Goodyear on 27 Jan 14 - No Cached
  • Nathan Goodyear on 27 Jan 14
     
    In this study, creatine + sodium bicarbonate improved time in interval swimming.  All were loaded for 6 days prior to randomization.
Justin Stone

Effective Stretch Mark Remedy - 4 views

I gave birth six months ago. What bothers me are these stretch marks that are found in my belly. I could not wear my swim wear attire whenever my family would decide to stay at the beach to swim. I...

skin care stretch mark cream

started by Justin Stone on 28 Feb 12 no follow-up yet
Justin Stone

Effective Stretch Mark Remedy - 1 views

I gave birth six months ago. What bothers me are these stretch marks that are found in my belly. I could not wear my swim wear attire whenever my family would decide to stay at the beach to swim. I...

stretch mark cream

started by Justin Stone on 29 Feb 12 no follow-up yet
Justin Stone

Effective Stretch Mark Remedy - 3 views

I gave birth six months ago. What bothers me are these stretch marks that are found in my belly. I could not wear my swim wear attire whenever my family would decide to stay at the beach to swim. I...

stretch mark cream treatment skin care

started by Justin Stone on 07 Mar 12 no follow-up yet
Nathan Goodyear

Creatine supplementation improves the anae... [Acta Physiol Hung. 2009] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...19706374

creatine swimming performance sports

shared by Nathan Goodyear on 27 Jan 14 - No Cached
  • Nathan Goodyear on 27 Jan 14
     
    Four day loading dose with 20 grams of creatine significantly improved swimming time in elite swimmers.
Nathan Goodyear

Taylor & Francis Online :: The effect of longer-term creatine supplementation on elite ... - 0 views

www.tandfonline.com/...026404199365416

creatine swimming performance sports

shared by Nathan Goodyear on 27 Jan 14 - No Cached
  • Nathan Goodyear on 27 Jan 14
     
    4 days of creatine loading with 25 grams improved times in elite swimmers in 19/22 individuals.  Two months provided no significant benefit.
Nathan Goodyear

Effects of CoQ10 supplementation and swimm... [Bratisl Lek Listy. 2012] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...22794511

CoQ10 exercise performance

shared by Nathan Goodyear on 27 Jan 14 - No Cached
  • Nathan Goodyear on 27 Jan 14
     
    CoQ10 along with swimming training, inhibited lipid per oxidation and DNA damage.
Nathan Goodyear

The endurance triathlon: metabolic changes after each event and dur... - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...1956272

triathlon endurance training recovery lactate

shared by Nathan Goodyear on 18 Nov 14 - No Cached
  • Nathan Goodyear on 18 Nov 14
     
    Serum lactate elevates early in triathlon.  The greatest increase is associated with the swim event.  Muscle damage progressed through the 3 events (creatine phosphokinase and LDH).  Uric acid levels increased.  Recovery was seen out to 6 days post event.
stretchmark treatment

My Effective Stretch Mark Cream - 3 views

I am very depressed this past few days because I thought I will never get rid of this stretch marks on my thighs, I am still at my teenage years and I cannot even enjoy going out with my friends to...

stretch mark treatment skin care products

started by stretchmark treatment on 23 Mar 12 no follow-up yet
Nathan Goodyear

JISSN | Full text | International Society of Sports Nutrition position stand: creatine ... - 0 views

www.jissn.com/6

creatine sports nutrition exercise

shared by Nathan Goodyear on 27 Jan 14 - No Cached
  • the energy supplied to rephosphorylate adenosine diphosphate (ADP) to adenosine triphosphate (ATP) during and following intense exercise is largely dependent on the amount of phosphocreatine (PCr) stored in the muscle
  • Creatine is chemically known as a non-protein nitrogen
  • It is synthesized in the liver and pancreas from the amino acids arginine, glycine, and methionine
  • ...26 more annotations...
  • Approximately 95% of the body's creatine is stored in skeletal muscle
  • About two thirds of the creatine found in skeletal muscle is stored as phosphocreatine (PCr) while the remaining amount of creatine is stored as free creatine
  • The body breaks down about 1 – 2% of the creatine pool per day (about 1–2 grams/day) into creatinine in the skeletal muscle
  • The magnitude of the increase in skeletal muscle creatine content is important because studies have reported performance changes to be correlated to this increase
  • "loading" protocol. This protocol is characterized by ingesting approximately 0.3 grams/kg/day of CM for 5 – 7 days (e.g., ≃5 grams taken four times per day) and 3–5 grams/day thereafter [18,22]. Research has shown a 10–40% increase in muscle creatine and PCr stores using this protocol
  • Additional research has reported that the loading protocol may only need to be 2–3 days in length to be beneficial, particularly if the ingestion coincides with protein and/or carbohydrate
  • A few studies have reported protocols with no loading period to be sufficient for increasing muscle creatine (3 g/d for 28 days)
  • Cycling protocols involve the consumption of "loading" doses for 3–5 days every 3 to 4 weeks
  • Most of these forms of creatine have been reported to be no better than traditional CM in terms of increasing strength or performance
  • Recent studies do suggest, however, that adding β-alanine to CM may produce greater effects than CM alone
  • These investigations indicate that the combination may have greater effects on strength, lean mass, and body fat percentage; in addition to delaying neuromuscular fatigue
  • creatine phosphate has been reported to be as effective as CM at improving LBM and strength
  • Green et al. [24] reported that adding 93 g of carbohydrate to 5 g of CM increased total muscle creatine by 60%
  • Steenge et al. [23] reported that adding 47 g of carbohydrate and 50 g of protein to CM was as effective at promoting muscle retention of creatine as adding 96 g of carbohydrate.
  • It appears that combining CM with carbohydrate or carbohydrate and protein produces optimal results
  • Studies suggest that increasing skeletal muscle creatine uptake may enhance the benefits of training
  • Nearly 70% of these studies have reported a significant improvement in exercise capacity,
  • Long-term CM supplementation appears to enhance the overall quality of training, leading to 5 to 15% greater gains in strength and performance
  • Nearly all studies indicate that "proper" CM supplementation increases body mass by about 1 to 2 kg in the first week of loading
  • short-term adaptations reported from CM supplementation include increased cycling power, total work performed on the bench press and jump squat, as well as improved sport performance in sprinting, swimming, and soccer
  • Long-term adaptations when combining CM supplementation with training include increased muscle creatine and PCr content, lean body mass, strength, sprint performance, power, rate of force development, and muscle diameter
  • subjects taking CM typically gain about twice as much body mass and/or fat free mass (i.e., an extra 2 to 4 pounds of muscle mass during 4 to 12 weeks of training) than subjects taking a placebo
  • The gains in muscle mass appear to be a result of an improved ability to perform high-intensity exercise via increased PCr availability and enhanced ATP synthesis, thereby enabling an athlete to train harder
  • there is no evidence to support the notion that normal creatine intakes (< 25 g/d) in healthy adults cause renal dysfunction
  • no long-term side effects have been observed in athletes (up to 5 years),
  • One cohort of patients taking 1.5 – 3 grams/day of CM has been monitored since 1981 with no significant side effects
  • Nathan Goodyear on 27 Jan 14
     
    Nice review of the data, up to the publication date, on creatine.
Nathan Goodyear

Effect of resistance exercise on muscle steroidogenesis | Journal of Applied Physiology - 0 views

jap.physiology.org/...1754

resistance resistance training training exercise Testosterone male female hormone hormones muscle

shared by Nathan Goodyear on 03 Sep 14 - No Cached
  • skeletal muscle cell cultures incubated with DHEA produced testosterone in a DHEA dose-dependent manner
  • Muscle joins a growing list of tissues found to be capable of steroidogenesis
  • testosterone appears to have a role in the maintenance of muscle mass in women, although the importance of this role has not yet been fully established.
  • ...7 more annotations...
  • Circulating testosterone concentrations are generally elevated following a bout of resistance exercise in men (24, 31, 46, 52), whereas findings for the effect of resistance exercise on circulating testosterone in women are equivocal, with increases (10, 42) and no changes observed (22, 31)
  • swimming (51) and treadmill running (2) can significantly increase muscle testosterone concentrations in male and female rats
  • This upregulation of muscle testosterone in rats appears, at least in part, to be due to an increase in 3β-HSD and 17β-HSD type 1 expression
  • The primary finding in this study was that muscle steroidogenesis (i.e., testosterone production) in highly resistance-trained humans was not affected by an acute bout of heavy resistance exercise
  • A secondary finding was that the apparent molecular mass of 17β-HSD type 3 was increased following a single bout of heavy resistance exercise.
  • No differences were found for muscle testosterone or steroidogenic enzyme (17β-HSD type 3 and 3β-HSD types 1 and 2) concentrations between sexes or in response to resistance exercise
  • In conclusion, heavy resistance exercise did not induce changes in muscle steroidogenesis as measured by muscle concentrations of testosterone, 3β-HSD types 1 and 2, and 17β-HSD type 3 in highly resistance-trained young men and women.
  • Nathan Goodyear on 03 Sep 14
     
    Resistance exercise did not increase muscle concentrations of Testosterone in men or women.  The individuals in this study were actively training.  These were not sedentary individuals.
Nathan Goodyear

Effect of Vitamin C on Male Fertility in Rats Subjected to Forced Swimming Stress - 0 views

www.ncbi.nlm.nih.gov/...PMC4149087

vitamin C vitamin vitamins fertility stress

shared by Nathan Goodyear on 08 Sep 14 - No Cached
  • Nathan Goodyear on 08 Sep 14
     
    Vitamin C improved stress response and thus fertility in stress rat mode.
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