Sunday, December 28, 2008

Top 10 Most Accessed Articles in 2008 for the JISSN

1.
Accesses
10592
Research article
Effects of eight weeks of an alleged aromatase inhibiting nutritional supplement 6-OXO (androst-4-ene-3,6,17-trione) on serum hormone profiles and clinical safety markers in resistance-trained, eugonadal males
Dan Rohle, Colin Wilborn, Lem Taylor, Chris Mulligan, Richard Kreider, Darryn Willoughby
Journal of the International Society of Sports Nutrition 2007, 4:13 (19 October 2007)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles]
2.
Accesses
9098
Review
International Society of Sports Nutrition position stand: Nutrient timing
Chad Kerksick, Travis Harvey, Jeff Stout, Bill Campbell, Colin Wilborn, Richard Kreider, Doug Kalman, Tim Ziegenfuss, Hector Lopez, Jamie Landis, John L Ivy, Jose Antonio
Journal of the International Society of Sports Nutrition 2008, 5:17 (3 October 2008)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles] [Cited on BioMed Central]
3.
Accesses
8778
Commentary
International Society of Sports Nutrition position stand: creatine supplementation and exercise
Thomas W Buford, Richard B Kreider, Jeffrey R Stout, Mike Greenwood, Bill Campbell, Marie Spano, Tim Ziegenfuss, Hector Lopez, Jamie Landis, Jose Antonio
Journal of the International Society of Sports Nutrition 2007, 4:6 (30 August 2007)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles] [Cited on BioMed Central]
4.
Accesses
8714
Poster presentation
Effect of a combination dietary supplement product (Bounce-Back) on the signs and symptoms of delayed onset muscle soreness after eccentric exercise: a randomized, double-blind, placebo-controlled, crossover pilot study
Jay Udani, Betsy Singh, Elizabeth Sandoval
Journal of the International Society of Sports Nutrition 2008, 5(Suppl 1):P24 (17 September 2008)
[Abstract] [Full text] [PDF]
5.
Accesses
8121
Commentary
International Society of Sports Nutrition position stand: protein and exercise
Bill Campbell, Richard B Kreider, Tim Ziegenfuss, Paul La Bounty, Mike Roberts, Darren Burke, Jamie Landis, Hector Lopez, Jose Antonio
Journal of the International Society of Sports Nutrition 2007, 4:8 (26 September 2007)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles] [Cited on BioMed Central]
6.
Accesses
6598
Research article
Fat intake and injury in female runners
Kristen E Gerlach, Harold W Burton, Joan M Dorn, John J Leddy, Peter J Horvath
Journal of the International Society of Sports Nutrition 2008, 5:1 (3 January 2008)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles]
7.
Accesses
6264
Research article
Effects of acute and 14-day coenzyme Q10 supplementation on exercise performance in both trained and untrained individuals
Matthew Cooke, Mike Iosia, Thomas Buford, Brian Shelmadine, Geoffrey Hudson, Chad Kerksick, Christopher Rasmussen, Mike Greenwood, Brian Leutholtz, Darryn Willoughby, Richard Kreider
Journal of the International Society of Sports Nutrition 2008, 5:8 (4 March 2008)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles]
8.
Accesses
6194
Review
ISSN Exercise & Sport Nutrition Review: Research & Recommendations
Richard B Kreider, Anthony L Almada, Jose Antonio, Craig Broeder, Conrad Earnest, Mike Greenwood, Thomas Incledon, Douglas S Kalman, Susan M Kleiner, Brian Leutholtz, Lonnie M Lowery, Ron Mendel, Jeffrey R Stout, Darryn S Willoughby, Tim N Ziegenfuss
Journal of the International Society of Sports Nutrition 2004, 1:1-44 (10 May 2004)
[Abstract] [Full Text] [PDF]
9.
Accesses
6080
Research article
Effect of carbohydrate-protein supplement timing on acute exercise-induced muscle damage
James P White, Jacob M Wilson, Krista G Austin, Beau K Greer, Noah St John, Lynn B Panton
Journal of the International Society of Sports Nutrition 2008, 5:5 (19 February 2008)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles] [Cited on BioMed Central]
10.
Accesses
5993
Research article
The effects of creatine pyruvate and creatine citrate on performance during high intensity exercise
Ralf J├Ąger, Jan Metzger, Karin Lautmann, Vladimir Shushakov, Martin Purpura, Kurt-Reiner Geiss, Norbert Maassen
Journal of the International Society of Sports Nutrition 2008, 5:4 (13 February 2008)
[Abstract] [Full Text] [PDF] [PubMed] [Related articles]

Thursday, December 25, 2008

Recovery from a cycling time trial is enhanced with carbohydrate-protein

Recovery from a cycling time trial is enhanced with carbohydrate-protein supplementation vs. isoenergetic carbohydrate supplementation. John M Berardi , Eric E Noreen and Peter WR Lemon Journal of the International Society of Sports Nutrition 2008, 5:24doi:10.1186/1550-2783-5-24

Published: 24 December 2008

Abstract (provisional)
Background: In this study we assessed whether a liquid carbohydrate-protein (C+P) supplement (0.8g/kg C; 0.4g/kg P) ingested early during recovery from a cycling time trial could enhance a subsequent 60 min effort on the same day vs. an isoenergetic liquid carbohydrate (CHO) supplement (1.2g/kg). Methods: Two hours after a standardized breakfast, 15 trained male cyclists completed a time trial in which they cycled as far as they could in 60 min (AMex) using a Computrainer indoor trainer. Following AMex, subjects ingested either C+P, or CHO at 10, 60 and 120 min, followed by a standardized meal at 4h post exercise. At 6 h post AMex subjects repeated the time trial (PMex). Results: There was a significant reduction in performance for both groups in PMex versus AMex. However, performance and power decreases between PMex and AMex were significantly greater (p<0.05)> Conclusions: Under these experimental conditions, liquid C+P ingestion immediately after exercise increases fat oxidation, increases recovery, and improves subsequent same day, 60 min efforts relative to isoenergetic CHO ingestion.

Thermogenic Supplement Ratches Up Metabolism

The acute effects of the thermogenic supplement Meltdown on energy expenditure, fat oxidation, and hemodynamic responses in young, healthy males

Jean Jitomir , Erika Nassar , Julie Culbertson , Jen Moreillon , Thomas Buford , Geoffrey Hudson , Matt Cooke , Richard Kreider and Darryn S Willoughby

Journal of the International Society of Sports Nutrition 2008, 5:23doi:10.1186/1550-2783-5-23


Published: 16 December 2008

Abstract (provisional)

The purpose of this study was to evaluate the effects of a thermogenic supplement, Meltdown, on energy expenditure, fat oxidation, and hemodynamics before and after maximal treadmill exercise. In a double-blind, randomized, placebo-controlled, cross-over design, 12 male participants underwent two testing sessions after consuming either the Meltdownor placebo supplement. While in a fasted state, participants rested for one hour, orally ingested either Meltdown or placebo, rested for another hour, performed a maximal treadmill exercise test, and then rested for another hour. Throughout the testing protocol resting energy expenditure (REE), respiratory exchange ratio (RER), heart rate (HR), and blood pressure (BP) were assessed. Meltdown increased REE significantly more than placebo at 45 min (1.44 + 0.25 vs. 1.28 + 0.23 kcal/min; p= 0.003), 60 min (1.49 + 0.28 vs. 1.30 + 0.22 kcal/min; p= 0.025), and 120 min (1.51 + 0.26 vs. 1.33 + 0.27 kcals/min; p = 0.014) post-ingestion. Meltdown significantly decreased RER at 30 min (0.84 + 0.03 vs. 0.91 + 0.04; p = 0.022) and 45 min post-ingestion (0.82 + 0.04 vs. 0.89 + 0.05; p = 0.042), and immediately post-exercise (0.83 + 0.05 vs. 0.90 + 0.07; p = 0.009). Furthermore, over the course of the evaluation period, area under the curve assessment demonstrated that REE was significantly increased with Meltdown compared to placebo (9,925 + 1,331 vs. 8,951 + 2,961 kcals; p = 0.043), while RER was significantly less than placebo (5.55 + 0.61 vs. 5.89 + 0.44; p = 0.002) following ingestion. HR and BP were not significantly affected prior to exercise with either supplement (p > 0.05) and the exercise-induced increases for HR and BP decreased into recovery and were not different between supplements (p > 0.05). These data suggest that Meltdown enhances REE and fat oxidation more than placebo for several hours after ingestion in fully rested and post-exercise states without any adverse hemodynamic responses.

Tuesday, December 23, 2008

Chocolate, wine and tea improve brain performance

Chocolate, wine and tea improve brain performance
Published on 22 December 2008, 09:25 Last Update: 22 hour(s) ago by Insciences

Wine, chocolate and tea can enhance cognitive performance, Oxford researchers found
All that chocolate might actually help finish the bumper Christmas crossword over the seasonal period. According to Oxford researchers working with colleagues in Norway, chocolate, wine and tea enhance cognitive performance.
The team from Oxford’s Department of Physiology, Anatomy and Genetics and Norway examined the relation between cognitive performance and the intake of three common foodstuffs that contain flavonoids (chocolate, wine, and tea) in 2,031 older people (aged between 70 and 74).
Participants filled in information about their habitual food intake and underwent a battery of cognitive tests.Those who consumed chocolate, wine, or tea had significantly better mean test scores and lower prevalence of poor cognitive performance than those who did not. The team reported their findings in the Journal of Nutrition.
The role of micronutrients in age-related cognitive decline is being increasingly studied. Fruits and beverages such as tea, red wine, cocoa, and coffee are major dietary sources of polyphenols, micronutrients found in plant-derived foods. The largest subclass of dietary polyphenols is flavonoids, and it has been reported in the past that those who consume lots of flavonoids have a lower incidence of dementia.
The latest findings seem to support the theory, although the researchers caution that more research would be needed to prove that it was flavonoids, rather than some other aspect of the foods studied, that made the difference.The effect was most pronounced for wine.
However, say the researchers, those overdoing it at Christmas should note that while moderate alcohol consumption is associated with better cognitive function and reduced risk of Alzheimer’s disease and dementia, heavy alcohol intake could be one of many causes of dementia – as well as a host of other health problems.
Contact : Maria Coyle, maria.coyle@admin.ox.ac.ukSource: University of Oxford

Friday, December 19, 2008

VPX Sports Signs on as the 2009 ISSN Title Sponsor


The International Society of Sports Nutrition (ISSN) is proud to announce that VPX Sports has signed on as the Title Sponsor of the ISSN!

“It is a privilege for us to have the support of one of the most influential companies in the sports nutrition industry," says Jeff Stout, PhD. the current President of the ISSN. Dr. Stout further states that "VPX’s dedication and support of science is incredibly important in this rapidly expanding and robust category of performance nutrition and supplements.”

"VPX/Redline is proud to forge a relationship with the ISSN to increase not only our credibility through science, but also to raise the bar and respect level for our entire industry. We have a dedicated research and development staff of 26 pharmaceutically trained lab techs, compounders, food scientists, QA, QC, HPLC, IR data, TM and Patent staff that works in concert to produce the very best, most effective supplements in the world. Our commitment to science is unparalleled in the field of liquid delivery and sports nutrition,” says Jack Owoc, CEO/CSO of VPX/Redline.

VPX Sports is a leading sports supplement brand founded in 1993 by Jack Owoc. VPX manufactures and sells many cutting-edge products that include: Meltdown, Redline, N.O. Shotgun, Muscle Power protein RTD etc. They currently have funded over hundreds of thousands of dollars in university research studies and clinical trials. For more information, log onto www.vpxsports.com

The ISSN is the leading academic society dedicated to promoting the science and application of sports nutrition and supplementation. For more information, go to www.theissn.org

Thursday, December 11, 2008

Estrogenic Compounds in flax: should men worry?

Flax Oil and Estrogenic Compounds: Should Men Avoid Flax Oil?

Over the years I have read on several ‘net forums and other places, that flax oil contains estrogenic compounds and men should avoid flax oil. It’s often written as fact. Is it true? Let’s see…

For one, it’s actually a moot issue if you are talking about flax oil. The main flaxseed lignan is secoisolariciresinol diglucoside (SDG), which is found in the hull but which occurs in the oil in very small quantities. I don’t generally recommend large amounts of ground flax seed to men per se, but it’s also a far more complicated issue than people - in particular self proclaimed experts found on the ‘net - realize, and no simple flax lignan = estrogenic effects should be made.

The term “phyto estrogen” is not automatically a negative per se, as it may act as an anti estrogen depending on the tissue in question and other variables.

For example, flax lignans were found to reduce mammary carcinogenesis, which means it’s acting as an anti estrogen in those tissues. According to one review on the topic:

“phytoestrogens, like certain selective estrogen receptor modulators, have an antiproliferative effect on the breast, and positive effects on the lipoprotein profile and bone density. They might also improve some of the climacteric symptoms.” (1)

The bottom line here is, it’s far more complicated than people often appreciate. Should men run out and eat large amounts of ground flax seed in hopes of getting an anti estrogenic effect?

No, as large amounts of weak estrogens in the male system can still have a net negative effect depending on many physiological variables, but the effects, dose needed, etc, etc are far from clear at this time.

Should men worry about the tiny amounts of lignans found in flax oil? No.

Studies in animals, again, suggest interesting effects on hormone levels, at least in animals given large amounts of flaxseeds. (2). A study called “Dose, timing, and duration of flaxseed exposure affect reproductive indices and sex hormone levels in rats” done at the Department of Nutritional Sciences, University of Toronto, Ontario, Canada found

“In male rats, lifetime 10% flaxseed exposure raised serum testosterone and estradiol levels and produced higher relative sex organ weights and prostate cell proliferation. In contrast, lifetime exposure to 5% flaxseed reduced adult relative prostate weight and cell proliferation, suggesting potential protection against prostatic disease, although sex hormone levels were unaffected. In conclusion, flaxseed can potentially alter reproduction, depending on the dose and timing of exposure.”

So, at very high amounts for their entire life span, flax seeds increased both testosterone and estradiol and even at 5% of their diets for their entire life, no effects on hormones were found. Conclusion, people recommending men avoid flax oil “because it contains estrogens” need to do more research on the topic before giving out bad advice...

(1) Brzezinski A & Debi A, Eur J Obstet Gynecol Reprod Biol, 85(1): 47, 1999)

(2) Tou JC, Chen J, Thompson LU.J Toxicol Environ Health A. 1999 Apr 23;56(Cool:555-70.

Source: BrinkZone Blog

Monday, December 8, 2008

ICST - International Conference for Strength Training

http://www.nsca-lift.org/Publications/BulletinPdfs/Bull307.pdf
Check out the latest NSCA bulletin. Recently the NSCA and ISSN partnered up to co-promote the International Conference for Strength Training (which was held for the very first time in North America!).

Interesting...The AHA has 'endorsed' this product



Not All Nutrition Drinks are Created Equal: Health Experts Caution to Watch Out for Hidden Sugars, Fat, and Calories

Nutrient-rich beverages are gaining popularity among consumers as a convenient way to help stay healthy. ZOIC Nutrition Drink is scientifically formulated with a complete performance protein that balances out the best nutritional benefits and is proven to boost energy, build lean muscle, speed recovery after exercise, and maintain a strong immune system. ZOIC offers a complete and affordable option for everyone concerned about proper nutrition and healthy weight management. ZOIC is the first product of its kind certified by the American Heart Association.

Altamonte Springs, FL (PRWEB) December 8, 2008 -- The nutrition beverage market is booming as people of all ages turn to nutrient enhanced drinks to help fuel a healthy lifestyle, but the benefits often may be more hyped than healthy. Health experts across the country are urging consumers to read the label and look out for hidden sugars, fat, and calories in these drinks.

Nutrient-rich beverages are gaining popularity among consumers as a convenient way to boost energy, endurance, and overall health. "Healthy people are taking heed of the recent scientific studies that recommend an increase in protein and a decrease in high carbohydrate and high sugar foods to support a healthy lifestyle," says Harvard physician Dr. Marcus Elliott, MD, who works with world-class athletes from the NFL, NBA, and MLB. Dr. Elliott says most adults need to concentrate on getting more high quality protein in their daily diets.

"Because the body can't store protein for future needs, as it does carbohydrates, it's important to eat protein at regular intervals. High protein nutritional beverages can play an important role in managing a healthier lifestyle -- whether you're an elite athlete, or a casual exerciser trying to maintain your weight with smart eating and physical activity," says Dr. Elliott. "The issue is that too many people aren't aware that many of the nutritional drinks on the market are loaded with hidden sugars, fat, and calories."

Dr. Elliott is part of a team of health & science professionals behind ZOIC, an advanced nutrition drink hitting store shelves across the country later this month. ZOIC -- meaning "pertaining to life" -- was created to satisfy increasing consumer demand for healthy and convenient nutritional products. ZOIC is different from most other nutritional beverages that are laden with high calories, high-fructose corn syrup, added sugars, or high fat content. ZOIC is specially formulated to provide an optimal mix of 21 grams of high-quality proteins, 26 vitamins and minerals, antioxidants, and healthy dietary fiber. Each serving of ZOIC has only 110 calories, 2 net grams of carbohydrates with no sugar added, and is 99 percent fat free. ZOIC's nutrient composition makes it ideal for general nutrition, healthy weight management, and exercise and fitness regimens.

"Other nutritional beverages may not offer the complete package of nutrients and high-quality protein that ZOIC provides," adds Dr. Elliott. "ZOIC is an ideal solution for those looking to maintain healthy blood sugar levels and watch their glycemic index." ZOIC is scientifically formulated with a complete performance protein that balances out the best nutritional benefits and is proven to boost energy, build lean muscle, speed recovery after exercise, and maintain a strong immune system.

"While the efficacy of our products is our paramount concern, we also recognize that it is critically important that they be affordable, especially in light of our current economy," said John Serieka, Solis Brands' President and Chief Marketing Officer. "Obviously everyone is being very discerning about where and how to spend their dollars, but no one wants to neglect their health and well being. ZOIC offers a complete and affordable option for everyone concerned about proper nutrition and healthy weight management. ZOIC contains only the finest and highest quality ingredients and is a terrific consumer value when compared to other competitive products."

AMERICAN HEART ASSOCIATION CERTIFIES ZOIC

As an indicator of ZOIC's nutritional quality, the American Heart Association (AHA) has certified the product. It displays the heart-check mark because it meets the organization's criteria for saturated fat and cholesterol for healthy people over age 2. ZOIC is also qualified under the US FDA Heart Health Claim

"With all the messages in grocery stores, from sales fliers to promotions on food packages, consumers are bombarded with information. The simple heart-check mark from the American Heart Association makes it easy for them to cut through the clutter and reliably find the nutritious foods they're looking for," said American Heart Association spokesperson, Penny Kris-Etherton, R.D., Ph.D., professor of nutrition at Pennsylvania State University.

CONSUMERS DEMAND CREDIBLE NUTRITIONAL PRODUCTS

ZOIC was initially available only through hospitals and health institutions, but now is being distributed to grocery, drug, convenience and mass merchant stores across the country. ZOIC is USDA inspected as "true to content", and is also Union Orthodox Kosher Certified -- an independent verification of quality, integrity & purity.

ZOIC is available in French Vanilla and Belgian Chocolate flavors and is sold in 4-packs at an MSRP of $5.99 in the Adult Nutrition and/or Weight Management section of most major retailers nationwide.

For more information, please visit: www.zoicbev.com

Thursday, November 27, 2008

Fat Intake and Injury in Female Runners

Background

Our purpose was to determine the relationship between energy intake, energy availability, dietary fat and lower extremity injury in adult female runners. We hypothesized that runners who develop overuse running-related injuries have lower energy intakes, lower energy availability and lower fat intake compared to non-injured runners.

Methods

Eighty-six female subjects, running a minimum of 20 miles/week, completed a food frequency questionnaire and informed us about injury incidence over the next year.

Results

Injured runners had significantly lower intakes of total fat (63 ± 20 vs. 80 ± 50 g/d) and percentage of kilocalories from fat (27 ± 5 vs. 30 ± 8 %) compared with non-injured runners. A logistic regression analysis found that fat intake was the best dietary predictor, correctly identifying 64% of future injuries. Lower energy intake and lower energy availability approached, but did not reach, a significant association with overuse injury in this study.

Conclusion

Fat intake is likely associated with injury risk in female runners. By documenting these associations, better strategies can be developed to reduce running injuries in women.
http://www.jissn.com/content/5/1/1

Bottom line: if you run, you need to eat! Female runners take heed, eat more protein and fat!

ISSN Publishes Position Statement on Nutrient Timing

The International Society of Sports Nutrition has published a position statement on nutrient timing, which is the practice of ingesting the right nutrients at the right times in relation to exercise to maximize exercise performance and the benefits resulting from exercise. The statement included eight tenets.

The second tenet reads, "During exercise, carbohydrate [CHO]should be consumed at a rate of 30 - 60 grams of CHO/hour in a 6 - 8 % CHO solution (8 - 16 fluid ounces) every 10 - 15 minutes. Adding protein [PRO] to create a CHO:PRO ratio of 3 - 4:1 may increase endurance performance and maximally promotes glycogen re-synthesis during acute and subsequent bouts of endurance exercise."

The eighth tenet reads, "Nutrient timing incorporates the use of methodical planning and eating of whole foods, nutrients extracted from food, and other sources. The timing of the energy intake and the ratio of certain ingested macronutrients are likely the attributes which allow for enhanced recovery and tissue repair following high-volume exercise, augmented muscle protein synthesis, and improved mood states when compared with unplanned or traditional strategies of nutrient intake."

To read all eight tenets,
click here.
http://www.poweringmuscles.com/Sports-Science-61,Issn_Publishes_Position_Statement_On_Nutrient_Timing.html

Beta-Alanine improves performance in the elderly

Sport Supplement May Help Shield Seniors From Falls

Beta-alanine boosts muscle, balance, study finds

Posted November 19, 2008

WEDNESDAY, Nov. 19 (HealthDay News) -- The dietary supplement beta-alanine (BA) -- widely used by athletes and body builders -- improves muscle endurance in the elderly, according to U.S. researchers.

The finding "could have importance in the prevention of falls, and the maintenance of health and independent living in elderly men and women," said study author Jeffrey Stout of the University of Oklahoma.

BA is an amino acid that helps form carnosine, which plays a major role in normal muscle function during intense exercise. The more BA, the higher carnosine levels in muscles, the researchers said.

In this study, Stout and his colleagues assessed the fitness levels of 26 elderly men and women before and after they took BA supplements or placebo pills for 90 days.

They found a 67 percent improvement in the fitness levels of those who took BA, compared to a 21.5 percent improvement in the placebo group.

"Our data suggest that 90 days of BA supplementation increased physical working capacity in elderly men and women," the study authors wrote. "These findings are clinically significant, as a decrease in functional capacity to perform daily living tasks has been associated with an increase in mortality, primarily due to increased risk of falls."

The study was published online this month in the Journal of the International Society of Sports Nutrition.