Filters
Sections
Categories
Date Range
Ingredients

You are now viewing content from vitamins minerals antioxidants. To search on content not specified in the filters, use the global search box above.

Approximately 62 documents matched your search.
  1. 3/4/2011 / Effects of a mineral antioxidant complex on clinical safety, body water, lactate response, and aerobic performance in response to exhaustive exercise

    Silica forms unique bonds with water molecules and is thought to enhance water retention during intense exercise. Its unique chemical structure might also help buffer lactate.

  2. 3/4/2011 / Active recovery training does not affect the antioxidant response to soccer games in elite female players

    Strenuous intermittent exercise increases the production of reactive oxygen species (ROS), which may lead to oxidative stress if the balance between antioxidant defenses is disturbed. Excessive exercise-induced oxidative stress is believed to be a factor leading to fatigue, therefore an efficient...

  3. 3/4/2011 / Acute Calcium Ingestion Attenuates Exercise-Induced Disruption of Calcium Homeostasis

    Although cross-sectional studies show that athletes have a higher bone mineral density (BMD) than nonathletes, some studies show that competitive cyclists have lower BMDs than other athletes such as runners. In a recent study it was shown that total hip (TH) BMD decreased 1.5% in male cyclists...

  4. 3/4/2011 / Antioxidant responses to an acute ultra-endurance exercise: impact on DNA stability and indications for an increased need for nutritive antioxidants in the early recovery phase

    There is ongoing debate whether supplementation with antioxidants is beneficial in terms of preventing or minimizing oxidative stress and damage in response to strenuous exercise, or whether it is detrimental by interfering with favorable physiologic effects of exercise training. Studies that have...

  5. 3/4/2011 / Bone-mineral density and other features of the female athlete triad in elite endurance runners: a longitudinal and cross-sectional observational study

    Studies have shown that physical activity can help maintain and actually increase bone-mineral density (BMD). However, low BMD has been recognized in female athletes who participate in sports that emphasize leanness, such as gymnastics and endurance training. Low BMD is associated with menstrual...

  6. 3/4/2011 / Altered antioxidant and trace-element status in adolescent female gymnasts

    Reactive oxygen species (ROS) are generated during exercise. Glutathione peroxidase (GPx) and superoxide dismutase (SOD) are plasma antioxidant enzymes that protect the body from harmful effects of ROS. It has been shown in adults that exercise induces production of these enzymes so people who...

  7. 3/4/2011 / Low-calorie energy drink improves physiological response to exercise in previously sedentary men: a placebo-controlled efficacy and safety study

     Assess the effects of 10 weeks of once-daily consumption of a low-calorie energy drink, either alone or in combination with exercise, on body composition, cardiorespiratory fitness, upper- and lower-body strength, mood, and safety variables

  8. 3/4/2011 / Antioxidant status of elite athletes remains impaired 2 weeks after a simulated altitude training camp

    The hypothesis was that antioxidant status is impaired by 18 days of "living high, training low" (LHTL) and will remain altered after 14 days of recovery.

  9. 3/4/2011 / Effect of purple sweet potato leaves consumption on exercise-induced oxidative stress and IL-6 and HSP72 levels

     Exercise induces oxidative stress that can be combated to various extents by consuming antioxidants. Purple sweet potato leaves (PSPLs) have high amounts of polyphenol and flavonoid antioxidants.

  10. 3/4/2011 /The prevalence of vitamin supplementation in ultraendurance triathletes

    Ultraendurance athletes, as those training for an Ironman or an Olympic-distance triathlon, can undertake 14.5-21 hrs of training per week, or more. Matching energy intake as well as vitamin and mineral intake is important for best performance and for optimum health. The benefits of vitamin and...

  11. 3/4/2011 / Antioxidant supplementation had positive effects in old rat muscle, but through better oxidative status in other organs

     Sarcopenia (age-related muscle mass loss) is a major public health problem affecting individuals in the rapidly increasing elderly population. One of the mechanisms proposed for the development of sarcopenia is an oxidative stress-mediated imbalance between protein synthesis and degradation...

  12. 3/4/2011 /The effects of acute and prolonged CRAM supplementation on reaction time and subjective measures of focus and alertness in healthy college students

     Phosphatidylcholine is a cellular membrane phospholipid that is necessary for both structural integrity as well as physiologic functions. Choline is also essential in the production of the neurotransmitter acetylcholine and has a potential role in neuromuscular signaling, which could produce...

  13. 3/4/2011 /Vitamin D status in female military personnel during combat training

    Vitamin D is necessary to maintain bone health, with suboptimal levels leading to poor calcium absorption and increases in parathyroid hormone (PTH) levels. Intense physical exercise such as combat training (CT) combined with weakened bone health could result in stress fractures. Women of combat...

  14. 3/4/2011 /PAKs supplement improves immune status and body composition but not muscle strength in resistance trained individuals

     Mixed formula supplements are very popular among recreational and professional weightlifters. Often known as PAKs, these dietary supplements consist of several pills/tablets packaged in the same envelope and are meant to be ingested together. They are intended to provide the consumer with...

  15. 3/4/2011 /Active recovery training does not affect the antioxidant response to soccer games in elite female players

     Strenuous intermittent exercise increases the production of reactive oxygen species (ROS), which may lead to oxidative stress if the balance between antioxidant defenses is disturbed. Excessive exercise-induced oxidative stress is believed to be a factor leading to fatigue, therefore an...

  16. 3/4/2011 /Vitamin D status relative to diet, lifestyle, injury, and illness in college athletes

    Vitamin D is necessary for bone health and plays an important role in inflammation and immunity. Suboptimal vitamin D levels increase the risk of overuse and inflammatory injuries and increase susceptibility to illness. Vitamin D deficiency (25-hydroxy vitamin D, or 25(OH)D, < 20 ng/mL) and...

  17. 3/4/2011 /Physiological effects of caffeine, epigallocatechin-3-gallate, and exercise in overweight and obese women

     Obesity is the result of a positive energy balance and contributes to more than 300,000 deaths per year. Recent research has been particularly focused on the use of plant compounds (ie, caffeine, green tea), with a principal aim of reducing food intake and/or increasing energy expenditure....

  18. 3/4/2011 /Water and solute absorption from carbohydrate-electrolyte solutions in the human proximal small intestine: a review and statistical analysis

    Intestinal fluid and nutrient absorption has been investigated in humans at rest and during exercise using a triple-lumen tube intubation perfusion technique beginning in the early 1960s. The triple-lumen tube intubation-perfusion technique provides a precise measurement of transport rate of water...

  19. 3/4/2011 /Effect of n-3 fatty acids and antioxidants on oxidative stress after exercise

     n-3 fatty acids are known to have anti-inflammatory activity that may reduce oxidative stress. Supplementation with antioxidant vitamins has been proposed to counteract oxidative stress and improve antioxidant status. This study investigated the effects of daily supplementation with vitamins...

  20. 3/4/2011 /A 12-week supplementation with quercetin does not affect natural killer cell activity granulocyte oxidative burst activity or granulocyte phagocytosis in female human subjects

    The most prominent flavonoids in fruits and vegetables are flavonols, of which quercetin is the most commonly consumed in the human diet. Quercetin is a strong antioxidant with anti-inflammatory, antimicrobial, and immune-modulating properties. Total dietary flavonol intake estimates for US adults...

  21. 3/4/2011 /A-Z of nutritional supplements dietary supplements sports nutrition foods and ergogenic aids for health and performance- Part 16

    This review covers the use of folate, gamma-aminobutyric acid (GABA), gamma-oryzanol, ferulic acid, gamma-hydroxybutyrate (GHB), and gamma-butyrolactone in sports performance.

  22. 3/4/2011 /Antiobesity effects of green tea catechins a mechanistic review

    Obesity and associated comorbidities are a growing health problem worldwide. Obesity can result from a very small positive energy imbalance between dietary intake and energy expenditure. The actual amount of weight gained per year in the US and Australia, on average, is only 0.5 kg, regardless of...

  23. 3/4/2011 /Multi-organ dysfunction in bodybuilding possibly caused by prolonged hypercalcemia due to multi-substance abuse Case report and review of literature

     It is often difficult to identify causes of severe ailments of bodybuilders because many bodybuilders have histories of legal or illegal substance abuse and often, either deliberately or unintentionally, do not or cannot declare their entire history of pharmaceutical ingestion. The negative...

  24. Multi-organ dysfunction in bodybuilding possibly caused by prolonged hypercalcemia due to multi-substance abuse: Case report and review of literature

    It is often difficult to identify causes of severe ailments of bodybuilders because many bodybuilders have histories of legal or illegal substance abuse and often, either deliberately or unintentionally, do not or cannot declare their entire history of pharmaceutical ingestion. The negative side...

  25. Bone health and the female athlete triad in adolescent athletes

    Bone is composed of a calcium-containing mineral called hydroxyapatite deposited on a phosphate-containing matrix. Bone mineral density (BMD) is defined as the amount of inorganic salts (ex. calcium and phosphate) exists per volume of bone. High bone density and high peak bone mass (PBM) are...

  26. Cardiorespiratory fitness, adiposity, and serum 25-dihydroxyvitamin D levels in men

    Vitamin D has many physiologic functions. For example, it increases the amount of calcium that is absorbed from our gut. Even with modern diets, vitamin D deficiencies are prevalent. Vitamin D status many correlate with chronic health conditions including cardiovascular disease, diabetes, and...

  27. Bone health and the female athlete triad in adolescent athletes

    Bone is composed of a calcium-containing mineral called hydroxyapatite deposited on a phosphate-containing matrix. Bone mineral density (BMD) is defined as the amount of inorganic salts (ex. calcium and phosphate) exists per volume of bone. High bone density and high peak bone mass (PBM) are...

  28. Longitudinal changes in bone mineral density in male master cyclists and nonathletes

    Impact exercise such as running and weight training have known benefits for bone health. Little is known, however, about the effect of low-impact sports on bone mineral density (BMD). Previous research has reported lower regional BMD in cyclists compared with both running counterparts and...

  29. Effect of quercetin supplementation on repeated-sprint performance, xanthine oxidase activity, and inflammation

    Xanthine oxidase is an enzyme that converts hypoxanthine to xanthine and then xanthine to uric acid. It is a major source of reactive oxygen species (ROS) during exercise, especially sprinting. ROS cause oxidative stress, which can cause an increase in inflammatory cytokines (signaling molecules)....

  30. Acute calcium ingestion attenuates exercise-induced disruption of calcium homeostasis

    Although athletes generally have higher bone mineral density (BMD) than non-athletes, cyclists are an exception. It is thought that the act of sweating indirectly activates bone resorption (minerals leaving the bone). This, in combination with the weight-supported exercise (as opposed to...

  31. Development and validation of a food-frequency questionnaire to assess short-term antioxidant intake in athletes

    Assessment of an athlete’s antioxidant intake is important for researchers as well as sports nutritionists. There are a few common methods used to determine antioxidant intake:

  32. Changes in body mass alone explain almost all of the variance in the serum sodium concentrations during prolonged exercise. Has commercial influence impeded scientific endeavour?

    Overconsumption of water or electrolyte-rich sports beverages can increase the risk for EAH and EAHE. The author claims that, although these findings have been shown in the scientific literature, companies and associations can distort or overshadow the findings in order to sell sports products...

  33. Effect of antioxidant supplementation on insulin sensitivity in response to endurance exercise training

    A 12-wk training protocol showed a clear increase in VO2max and insulin sensitivity as well as increases in Akt, GLUT4, and hexokinase II. Antioxidant supplementation did not appreciably alter the response to exercise for any of these variables. However, there was also no worsening of these...

  34. Exercise-induced trace mineral element concentration in regional vs. whole-body wash-down sweat

    The authors concluded that the patch method was not a validated surrogate for whole-body wash-down technique for the measurement of sweat calcium, magnesium, or copper. The concentrations of these electrolytes in sweat are very small and do not usually represent much of a concern relative to...

  35. A to Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance- Part 21

    AKG is a compound in the tricarboxylic acid (TCA) cycle, and is therefore a key player in energy generation. AKG also provides a source of glutamine to stimulate protein synthesis. Supplementation with AKG may increase anabolic hormones such as insulin, growth factor, and insulin-like growth...

  36. Dietary thiamin and riboflavin intake and blood thiamin and riboflavin concentrations in college swimmers undergoing intensive training

    The authors did not state a specific hypothesis. However, they reviewed the role of thiamin and riboflavin in energy metabolism and how important this is to athletes. In addition, they cited some cases studies of athletes with low B-vitamin status, especially thiamin. Therefore, the authors wanted...

  37. No effect of antioxidant supplementation on muscle performance and blood redox status adaptations to eccentric training

    There is substantial evidence that antioxidants provide health benefits in non-exercise settings. However, because exercise is oxidative by nature, there is debate as to whether the combination of antioxidants and exercise has a different effect than exercise alone.

  38. quercitin, vitamin C, niacin, body mass, body weight, body composition, weight control

    This study showed no apparent effects of quercitin supplementation on body mass or composition within a large cohort of subjects. The study had a large sample size and may be representative of how many people in the general population might use a quercitin supplement (e.g., adding it to normal...

  39. High sodium chloride intake exacerbates immobilization-induced bone resorption and protein losses

    A high sodium diet can accelerate the rate of bone and muscle loss under immobilization conditions.  This study implemented a rather extreme, whole body immobilization phase, but it is likely that salt intake can similar effects on injured and immobilized limbs, although probably to a lesser...

  40. The acute effect of ingesting a quercetin-based supplement on exercise-induced inflammation and immune changes in runners

    Although these 2 studies were compared directly, there were differences other than the duration of supplementation between them, for example, the length of exercise.  It is unknown whether performance benefits were seen after only 2 hrs when the subjects consumed the supplements for 2 wks.

  41. Effect of mixed flavonoids, n-3 fatty acids, and vitamin C on oxidative stress and antioxidant capacity before and after intense cycling

    The quercetin-based supplement was effective at reducing exercise-induced stress and the effect was more pronounced when it was combined with additional immune-modulating compounds. Unfortunately, there were many confounding factors

  42. A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance: part 24

    A triglyceride is a fat molecule composed of 3 fatty acids on a glycerol backbone. In a medium chain triglyceride (MCT), the fatty acids are 6-14 carbon atoms in length. MCTs can be metabolized by cells that line the small intestine and therefore the fatty acids can be absorbed and transported...

  43. French adults’ cognitive performance after daily supplementation with antioxidant vitamins and minerals at nutritional doses: a post hoc analysis of the Supplementation in Vitamins and Mineral Antioxidants (SU.VI.MAX) trial

    These results suggest that the beneficial effects of antioxidants on certain cognitive functions may persist for a long time, especially in subgroups with low antioxidant status. In this study, the levels of supplementation were low and are achievable through diet. High doses of antioxidants may...

  44. 5/3/2012 / Vitamin D intoxication with severe hypercalcemia due to manufacturing and labeling errors of two dietary supplements made in the United States

    These case studies highlight the poor quality control associated with some brands of vitamin D supplements and the potentially serious health consequences that can arise from taking such supplements. Vitamin D can be toxic at 100,000 IU/day for at least 1 mo. Calcium and vitamin D are strongly...

  45. 5/3/2012 / Impact of iron depletion without anemia on performance in trained endurance athletes at the beginning of a training season: A study of female collegiate rowers

    Iron deficiency is very common among female college athletes and it may be hindering their performance. It may be useful to screen athletes at the beginning of the season to identify those who have or are at risk for iron deficiency so they can adjust their diets accordingly. All female athletes...

  46. 5/3/2012 / Quercetin and endurance exercise capacity: A systematic review and meta-analysis

    Overall, the size of the effect of quercetin on endurance capacity equates to about 3%. Practically, this effect is very small. Quercetin improved endurance performance about 5%, which is not a very large amount, but could benefit very competitive athletes or the results of very close races.

  47. Ingesting a pre-workout supplement containing caffeine, B-vitamins, amino acids, creatine, and beta-alanine before exercise delays fatigue while improving reaction time and muscular endurance

    Several ergogenic aids (compounds that enhance sports performance) have been identified as effective for most athletes. Among these ingredients are caffeine, creatine, branched chain amino acids (BCAAs), B-vitamins, and beta-alanine.

  48. Role of vitamin C and E supplementation on IL-6 in response to training

    The increased cellular metabolism associated with exercise increases production of free radicals. Because of the damaging effects of free radicals on cells, increased free radical production has historically been viewed as a negative consequence of exercise. However, it is now recognized that free...

  49. Dietary supplements for improving body composition and reducing body weight: Where is the evidenc

    There is not significance evidence that any weight loss supplement is effective at promoting weight loss and keeping the weight off, but many studies are short (14 wks or less) and do not follow up with participants. A healthy lifestyle including a healthy diet and exercise is recommended for...

  50. A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance- Part 33

    When taken daily, quercetin and resveratrol are promising supplements for improving the overall health and endurance of athletes. However, more research is necessary to determine the optimal doses and dosing regimens. Combinations of various healthful compounds may have synergistic ergogenic...

  51. Iron status is associated with endurance performance and training in female rowers

    Iron deficiency without anemia was associated with overall poorer performance in female rowers. A very large proportion of female athletes have iron deficiency with and without anemia, and women need to assure that they are consuming adequate amounts of iron. Some individuals absorb iron more...

  52. Effect of astaxanthin supplementation on muscle damage and oxidative stress markers in elite young soccer players

    Long-term supplementation with astaxanthin attenuated exercise-induced muscle damage during a soccer practice. Although some oxidative stress is beneficial in initiating the development of defense mechanisms, oxidative stress can be overwhelming in athletes that train intensely and/or bear other...

  53. A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance- Part 35

    There have not been many studies investigating the effects of supplementation with selenium or serine on sports performance, but there is not evidence to date that supports use of either of these supplements. Sibutramine, though an effective weight loss drug, offers more risk than benefit in...

  54. A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance- Part 37

    Athletes who consume supplements and functional foods tend to combine ingredients, either intentionally or unintentionally.  It is important for athletes to be aware of what they are combining to prevent negative interactions and overdoses, as well as to increase the effects of their...

  55. A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance: Part 36

    Spirulina has only recently garnered interest in the sports community and more studies are needed before any recommendations can be made. Succinate and other TCA cycle intermediates are failing to show benefits in sports performance. Sucrose may provide value to sports...

  56. A-Z of nutritional supplements: dietary supplements, sports nutrition foods, and ergogenic aids for health and performance: Part 46

    Zinc supplementation can improve performance when a person is deficient in zinc, though it does not appear to be beneficial in individuals that are replete in zinc stores. If you are feeling weak or have a diet that is low in meat and animal products, you should have your zinc status evaluated...

  57. 25(OH) Vitamin D is associated with greater muscle strength in healthy men and women

    Read how research has found an association with increased muscle strength and sports performance. in healthy men and women.

  58. A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance: Part 42

    Learn about Vanadium, Valine, and Oxygenated water, and how they affect sports performance, whether they improve strength, and more.

  59. A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance: part 39

    Learn about the researched effects of Vitamin A, C, and E supplementation and their importance on impacting sports performance.

  60. Nutritional Supplements that are Efficacious, Safe and Appropriate for Adolescents

  61. Juicing Pros & Cons

  62. Contemporary Sports Nutrition Abstracts and Articles

    On this page, you will find helpful sports nutrition articles and abstracts culled from 47 nutrition and exercise journals from July 2015.
    The articles below were selected only if they included research in humans, although exceptions were made for particularly interesting and...

Google Tracking Google Plus Tracking Twitter Tracking