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Sports Performance Supplement

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81. Efficacy Study of Protein Supplementation in Attenuating the Decline in Performance After Strenuous Concurrent Exercise

exercise performance, along with measures of damage and inflammation of the muscle. Condition or disease Intervention/treatment Phase Sports Nutritional Sciences Dietary Supplement: Test product Dietary Supplement: Reference product 1 Dietary Supplement: Reference product 2 Not Applicable Study Design Go to Layout table for study information Study Type : Interventional (Clinical Trial) Actual Enrollment : 24 participants Allocation: Randomized Intervention Model: Parallel Assignment Masking: Double (...) Efficacy Study of Protein Supplementation in Attenuating the Decline in Performance After Strenuous Concurrent Exercise Efficacy Study of Protein Supplementation in Attenuating the Decline in Performance After Strenuous Concurrent Exercise - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum

2015 Clinical Trials

82. Nitrate supplementation and human exercise performance: too much of a good thing? (PubMed)

Nitrate supplementation and human exercise performance: too much of a good thing? Ergogenic supplements in sport events are widely used by popular and competitive athletes to enhance performance and reduce oxygen cost. Beetroot juice and nitrate salts have been increasingly used for the past 5-6 years. The present review discusses the scientific background, the efficiency and potential adverse effects of excessive nitrate supplementation.There is clear evidence that nitrate from different food (...) supplementation has been suggested to athletes to enhance exercise performance.The recent publications in human individuals based on L-arginine, beetroot juice or nitrate supplementation revealed either a minor positive effect or no systematic effect on exercise performance, especially in trained athletes. Of note, the sugar content of whole beetroot juice might induce a slightly more pronounced effect. Although reasonable intake of nitrate salts (up to 1 g/day) has no detrimental effect on kidney function

2015 Current opinion in clinical nutrition and metabolic care

83. Beta-alanine supplementation, muscle carnosine and exercise performance. (PubMed)

Beta-alanine supplementation, muscle carnosine and exercise performance. The use of dietary supplements in sports is widespread as athletes are continuously searching for strategies to increase performance at the highest level. Beta-alanine is such a supplement that became increasingly popular during the past years. This review examines the available evidence regarding the optimization of supplementation, the link between beta-alanine and exercise performance and the underlying ergogenic (...) , suggesting it could have a therapeutic potential.On the basis of the millimolar presence of carnosine in mammalian muscles, it must play a critical role in skeletal muscle physiology. The recent number of studies shows that this is related to an improved exercise homeostasis and excitation-contraction coupling. Recent developments have led to the optimization of the beta-alanine supplementation strategies to elevate muscle carnosine content, which are helpful in its application in sports and to potential

2015 Current opinion in clinical nutrition and metabolic care

84. Ergogenic effects of caffeine and sodium bicarbonate supplementation on intermittent exercise performance preceded by intense arm cranking exercise. (PubMed)

Ergogenic effects of caffeine and sodium bicarbonate supplementation on intermittent exercise performance preceded by intense arm cranking exercise. Caffeine and sodium bicarbonate ingestion have been suggested to improve high-intensity intermittent exercise, but it is unclear if these ergogenic substances affect performance under provoked metabolic acidification. To study the effects of caffeine and sodium bicarbonate on intense intermittent exercise performance and metabolic markers under (...) exercise-induced acidification, intense arm-cranking exercise was performed prior to intense intermittent running after intake of placebo, caffeine and sodium bicarbonate.Male team-sports athletes (n = 12) ingested sodium bicarbonate (NaHCO3; 0.4 g.kg(-1) b.w.), caffeine (CAF; 6 mg.kg(-1) b.w.) or placebo (PLA) on three different occasions. Thereafter, participants engaged in intense arm exercise prior to the Yo-Yo intermittent recovery test level-2 (Yo-Yo IR2). Heart rate, blood lactate and glucose

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2015 Journal of the International Society of Sports Nutrition

85. Testosterone Imposters: An Analysis of Popular Online Testosterone Boosting Supplements. (PubMed)

of improved erections, an elimination of reports of improved work performance, a 67% decrease in reports of improved sleep, and an 89% decrease in reports of improved sports ability.Our study can serve as a guide for providers to counsel patients about the efficacy of popular online T-Boosters as well as the prevalence of disingenuous reviews associated with these products on online marketplaces like Amazon.com.Strengths include the novel approach to assess consumers' perceptions and satisfaction of T (...) Testosterone Imposters: An Analysis of Popular Online Testosterone Boosting Supplements. Testosterone-boosting supplements (T-Boosters) are prominently featured on Amazon.com, with numerous dedicated pages and claims that they "naturally" increase testosterone levels.To evaluate the highest rated and frequently reviewed T-Boosters on Amazon.com to facilitate patient counseling regarding marketing myths, T-Booster formulations, and evidence for efficacy and safety.The Amazon marketplace

2019 Journal Of Sexual Medicine

86. Effectiveness of whey protein supplements on the serum levels of amino acid, creatinine kinase and myoglobin of athletes: a systematic review and meta-analysis. (PubMed)

Effectiveness of whey protein supplements on the serum levels of amino acid, creatinine kinase and myoglobin of athletes: a systematic review and meta-analysis. Consuming whey protein supplements, along with physiotherapy and psychotherapy, have been recognised in sports performance. Whey protein supplements (WPS) is one of the commonly used supplements as ergogenic aids for athletes to enhance their muscle performance and recovery during sport-related injuries. The purpose of this systematic (...) review is to investigate the effectiveness of WPS over the blood biochemistry mainly amino acids, creatinine kinase and myoglobin which influence performance and recovery among athletes.A comprehensive literature search was conducted to identify randomised control trials (RCTs) and non-RCTs that investigated the effectiveness of WPS on amino acids, creatinine kinase and myoglobin among athletes. Risk of Bias in Non-Randomised Studies of Interventions tool (ROBINS-I) and Cochrane Risk of Bias

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2019 Systematic reviews

87. Prevalence of, and factors associated with health supplement use in Dubai, United Arab Emirates: a population-based cross-sectional study. (PubMed)

population in Dubai, UAE.A cross-sectional household telephone survey using a computer-assisted questionnaire was conducted amongst a random representative sample (n = 1203) of the Dubai population that assessed HS use and knowledge. Dependent variables were supplement use and reports of adverse events while independent variables included socio-demographic factors, knowledge, attitudes, and practice. Logistic regression analysis was performed to identify factors independently associated with HS use.Among (...) Prevalence of, and factors associated with health supplement use in Dubai, United Arab Emirates: a population-based cross-sectional study. Health supplement (HS) products that are available in the Emirate of Dubai (United Arab Emirates; UAE) contain chemicals that may adversely affect human health. This study aimed to investigate the prevalence of, and factors associated with HS consumption, knowledge, related adverse events, and reporting practices of adverse events amongst the general

2019 BMC Complementary and Alternative Medicine

88. Post-exercise branched chain amino acid supplementation does not affect recovery markers following three consecutive high intensity resistance training bouts compared to carbohydrate supplementation. (PubMed)

Post-exercise branched chain amino acid supplementation does not affect recovery markers following three consecutive high intensity resistance training bouts compared to carbohydrate supplementation. Amino acid supplementation has been shown to potentially reduced exercise-induced muscle soreness. Thus, the purpose of this study was to examine if branched chain amino acid and carbohydrate (BCAACHO) versus carbohydrate-only sports drink (CHO) supplementation attenuated markers of muscle damage (...) while preserving performance markers following 3 days of intense weight training.Healthy resistance-trained males (n = 30) performed preliminary testing (T1) whereby they: 1) donated a baseline blood draw, 2) performed knee extensor dynamometry to obtain peak quadriceps isometric and isokinetic torque as well as electromyography (EMG) activity at 60°/s and 120°/s, and 3) performed a one repetition maximum (1RM) barbell back squat. The following week participants performed 10 sets x 5 repetitions

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2016 Journal of the International Society of Sports Nutrition

89. Effects of Creatine Monohydrate Supplementation on Simulated Soccer Performance. (PubMed)

Effects of Creatine Monohydrate Supplementation on Simulated Soccer Performance. To determine the effects of acute short-term creatine (Cr) supplementation on physical performance during a 90-min soccer-specific performance test.A double-blind, placebo-controlled experimental design was adopted during which 16 male amateur soccer players were required to consume 20 g/d Cr for 7 d or a placebo. A Ball-Sport Endurance and Speed Test (BEAST) comprising measures of aerobic (circuit time), speed (12 (...) - and 20-m sprint), and explosive-power (vertical jump) abilities performed over 90 min was performed presupplementation and postsupplementation.Performance measures during the BEAST deteriorated during the second half relative to the first for both Cr (1.2-2.3%) and placebo (1.0-2.2%) groups, indicating a fatigue effect associated with the BEAST. However, no significant differences existed between groups, suggesting that Cr had no performance-enhancing effect or ability to offset fatigue. When effect

2014 International journal of sports physiology and performance

90. Effect of lactate supplementation and sodium bicarbonate on 40 km cycling time trial performance. (PubMed)

Effect of lactate supplementation and sodium bicarbonate on 40 km cycling time trial performance. The use of nutritional supplements to improve sporting performance and increase training adaptations is commonplace among athletes and is an expanding market in terms of product choice and availability. The purpose of this study was to examine the effects of 2 ergogenic aids with extracellular blood buffering potential, namely sodium bicarbonate (NaHCO3) and a lactate supplement, during a 40-km (...) supplementation seem to improve 40-km cycling time trial performance. However, the potential benefits following LACTATE regarding perceived exertion require further research.

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2014 Journal of strength and conditioning research / National Strength & Conditioning Association

91. Vitamin D Supplementation and Physical Performance in Adolescent Swimmers. (PubMed)

Vitamin D Supplementation and Physical Performance in Adolescent Swimmers. It is hypothesized that vitamin D insufficiency in athletes might negatively affect sport performance. The objective of this study was to examine the effect of vitamin D3 supplementation on physical performance of adolescent swimmers with vitamin D insufficiency. Fifty-three adolescent competitive swimmers with vitamin D insufficiency (serum 25-hydroxyvitamin-D concentrations (25(OH)D) < 30 ng/ml, mean 24.2 ± 4.8 ng/ml (...) ) were randomized to receive 2,000 IU/day of vitamin D3 or placebo for 12 weeks. Swimming performance at several speeds, arm-grip strength, and one-legged balance, were measured before and after supplementation. The age-adjusted changes in performance variables during the study were compared between groups. 25(OH) D concentrations at study end were significantly higher in the vitamin group compared with the placebo group (29.6 ± 6.5 ng/ml vs. 20.3 ± 4.2 ng/ml, p < .001), yet only 48% of the vitamin

2014 International journal of sport nutrition and exercise metabolism

92. The Effect of Dietary Nitrate Supplementation on Ability of Individuals With Type 2 Diabetes to Perform Exercise

The Effect of Dietary Nitrate Supplementation on Ability of Individuals With Type 2 Diabetes to Perform Exercise The Effect of Dietary Nitrate Supplementation on Ability of Individuals With Type 2 Diabetes to Perform Exercise - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved (...) studies (100). Please remove one or more studies before adding more. The Effect of Dietary Nitrate Supplementation on Ability of Individuals With Type 2 Diabetes to Perform Exercise (Ex nit as) The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our for details. ClinicalTrials.gov Identifier: NCT02206074 Recruitment Status : Completed First Posted : August

2014 Clinical Trials

93. Does Dietary Nitrate Supplementation Improve Aerobic Performance

will be the change in the AT and VO2Max after beetroot juice supplementation. Methods: Patients will undergo an initial CPET and will then be randomized to receive either beetroot juice (BRJ, containing NO3-, 6.2 mmol/day, administered as 500ml Beet it Sport Shots, James White drinks, Ipswich uk) or 'placebo' (PL, NO3-depleted beetroot juice) for 7 days. A second CPET will then be performed. This pilot study will be used to calculate the mean AT and VO2Max and associated standard deviations for our population (...) Does Dietary Nitrate Supplementation Improve Aerobic Performance Does Dietary Nitrate Supplementation Improve Aerobic Performance - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before adding more. Does Dietary Nitrate

2014 Clinical Trials

94. [β-hydroxy-β-methylbutyrate as a dietary supplement (I): metabolism and toxicity].

[β-hydroxy-β-methylbutyrate as a dietary supplement (I): metabolism and toxicity]. -hydroxy--methylbutyrate (HMB) is a leucine metabolite produced from -ketoisocaproic acid. HMB supplementation has been used as a dietary supplement in sports since 1997, with the aim of decreasing muscle proteolysis. In recent years, positive effects have been reported in different pathologies, which suggests potential health benefits.The objectives of this review are: to know both HMB metabolism (...) and toxicity, and to identify HMB cellular and molecular mechanisms of action when used as a dietary supplement.A search was performed in the Web of Science, Pubmed and SportDiscus data bases. RESULTS were divided into two parts; this article presents the results about both HMB metabolism and possible toxicity.Studies show that HMB is related to cholesterol metabolism in skeletal muscle, which could reduce proteolysis, through hydroxy-methyl-glutaryl-coenzyme A and mevalonate as a precursor

2016 Nutricion hospitalaria

95. Gender differences and access to a sports dietitian influence dietary habits of collegiate athletes (PubMed)

and practices. Topics queried included eating habits, breakfast habits, hydration habits, nutritional supplementation use, pre-workout nutrition, post-workout nutrition, nutrition during team trips, and nutrient timing. Data were sorted by the athlete's source of nutritional information (i.e., sport dietitian, other). Data analysis consisted of descriptive statistics and 2-way Pearson X2 analyses (p ≤ 0.10).When a SD was indicated as the primary nutrition information source, athletes appeared to have (...) Gender differences and access to a sports dietitian influence dietary habits of collegiate athletes Limited research exists on the effect of a sports dietitian (SD) on athletes' dietary habits and nutrient periodization, which is the deliberate manipulation of macronutrient intake to match training goals. Further, the difference in dietary habits between men and women collegiate athletes has been understudied. A survey questionnaire examining dietary habits and practices was administered

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2016 Journal of the International Society of Sports Nutrition

96. Prevalence, knowledge and attitude of prohibited substances use (doping) among Saudi sport players (PubMed)

were visted in 18 cities from all regions of Saudi Arabia).A total of 1142 male sport players were interviewed with main age of 24. The prevalence of using prohibited substances (doping) was 4.3 %. The main reason for using prohibited substances was to improve performance (69 %). The prevalence of using food supplements (not prohibited) was 38.4 %. Among the players, 30 % of them believe that such behavior is against the spirit of sport while 70 % of the players are aware of punishment against (...) doping. 65 % of players admitted that they received advice on prohibited substances. Higher rate of using prohibited substances (doping) among Saudi players was associated with low education, age below 20 years, previous use of food supplements and lack of punishment awareness.Using prohibited substances (doping) among Saudi sport players is common. Players believe that such use is against the spirit of the sport and they are aware about its punishment, despite this, they are still using prohibited

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2016 Substance abuse treatment, prevention, and policy

97. Doping Attitudes and Covariates of Potential Doping Behaviour in High-Level Team-Sport Athletes; Gender Specific Analysis (PubMed)

Doping Attitudes and Covariates of Potential Doping Behaviour in High-Level Team-Sport Athletes; Gender Specific Analysis Team sports are rarely studied with regard to doping behaviour and doping-related factors regardless of their global popularity. This study aimed to investigate doping factors and covariates of potential doping behaviour in high-level team-sport athletes. The subjects were 457 high-performing, national- and international-level athletes (21.9 ± 3.4 years of age; 179 females (...) ) involved in volleyball (n = 77), soccer (n = 163), basketball (n = 114) and handball (n = 103). Previously validated self-administered questionnaires aimed at evidencing sport factors, doping-related factors, knowledge on sport nutrition and doping, and attitudes to performance enhancement were used. The results indicated a higher doping likelihood in male athletes, with a significant gender difference for basketball and handball. In males, a higher doping likelihood is found for athletes who had

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2016 Journal of sports science & medicine

98. Part 2: Health, Hormones and Human Performance take centre stage

Part 2: Health, Hormones and Human Performance take centre stage Part 2: Health, Hormones and Human Performance take centre stage | BJSM blog - social media's leading SEM voice by By Dr Nicky Keay Chair of BASEM Spring Conference 2018 Endocrine and Metabolic aspects of Sports and Exercise Medicine (SEM) are crucial determinants of health and human performance, from the reluctant exerciser through to the elite athlete and the professional dancer. This is what the recent BASEM spring conference (...) effects on health and athletic performance. Male and female athletes: insufficient energy availability An imbalance in training load and nutrition can manifest as the female athlete triad, which has now evolved into relative energy deficiency in sports (RED-S) in recognition of the fact that Endocrine feedback loops are disrupted across many hormonal axes, not just the reproductive axis. And, significantly, acknowledging the fact that males athletes can also be impacted by insufficient energy

2018 British Journal of Sports Medicine Blog

99. Effect of ubiquinol supplementation on biochemical and oxidative stress indexes after intense exercise in young athletes. (PubMed)

Effect of ubiquinol supplementation on biochemical and oxidative stress indexes after intense exercise in young athletes. Physical exercise significantly impacts the biochemistry of the organism. Ubiquinone is a key component of the mitochondrial respiratory chain and ubiquinol, its reduced and active form, is an emerging molecule in sport nutrition. The aim of this study was to evaluate the effect of ubiquinol supplementation on biochemical and oxidative stress indexes after an intense bout (...) of exercise.21 male young athletes (26 + 5 years of age) were randomized in two groups according to a double blind cross-over study, either supplemented with ubiquinol (200 mg/day) or placebo for 1 month. Blood was withdrawn before and after a single bout of intense exercise (40 min run at 85% maxHR). Physical performance, hematochemical parameters, ubiquinone/ubiquinol plasma content, intracellular reactive oxygen species (ROS) level, mitochondrial membrane depolarization, paraoxonase activity

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2018 Redox report : communications in free radical research

100. Effects of Probiotic (Bacillus subtilis) Supplementation During Offseason Resistance Training in Female Division I Athletes. (PubMed)

subtilis) supplementation during offseason training in collegiate athletes. Twenty-three Division I female athletes (19.6 ± 1.0 years, 67.5 ± 7.4 kg, and 170.6 ± 6.8 cm) participated in this study and were randomized into either a probiotic (n = 11; DE111) or placebo (n = 12; PL) group while counterbalancing groups for sport. Athletes completed a 10-week resistance training program during the offseason, which consisted of 3-4 workouts per week of upper- and lower-body exercises and sport-specific (...) training. Athletes consumed DE111 (DE111; 5 billion CFU/day) or PL supplement daily for the entire 10-week program. Before and after training, all athletes underwent 1 repetition maximum (1RM) strength testing (squat, deadlift, and bench press), performance testing (vertical jump and pro-agility), and isometric midthigh pull testing. Body composition (body fat [BF]%) was completed using BODPOD and bioelectrical impedance analysis, as well as muscle thickness (MT) measurement of the rectus femoris (RF

2018 Journal of Strength And Conditioning Research

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