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Sports Performance Supplement

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21. Postexercise Glycogen Recovery and Exercise Performance is Not Significantly Different Between Fast Food and Sport Supplements. (PubMed)

Postexercise Glycogen Recovery and Exercise Performance is Not Significantly Different Between Fast Food and Sport Supplements. A variety of dietary choices are marketed to enhance glycogen recovery after physical activity. Past research informs recommendations regarding the timing, dose, and nutrient compositions to facilitate glycogen recovery. This study examined the effects of isoenergetic sport supplements (SS) vs. fast food (FF) on glycogen recovery and exercise performance. Eleven males (...) for insulin and glucose, with blood lipids analyzed at 0 and 240 min. A 20k time-trial (TT) was completed following the final muscle biopsy. There were no differences in the blood glucose and insulin responses. Similarly, rates of glycogen recovery were not different across the diets (6.9 ± 1.7 and 7.9 ± 2.4 mmol·kg wet weight- 1·hr-1 for SS and FF, respectively). There was also no difference across the diets for TT performance (34.1 ± 1.8 and 34.3 ± 1.7 min for SS and FF, respectively. These data

2015 International journal of sport nutrition and exercise metabolism Controlled trial quality: uncertain

22. Practical Issues in Evidence-Based Use of Performance Supplements: Supplement Interactions, Repeated Use and Individual Responses (PubMed)

Practical Issues in Evidence-Based Use of Performance Supplements: Supplement Interactions, Repeated Use and Individual Responses Current sports nutrition guidelines recommend that athletes only take supplements following an evidence-based analysis of their value in supporting training outcomes or competition performance in their specific event. While there is sound evidence to support the use of a few performance supplements under specific scenarios (creatine, beta-alanine, bicarbonate (...) , caffeine, nitrate/beetroot juice and, perhaps, phosphate), there is a lack of information around several issues needed to guide the practical use of these products in competitive sport. First, there is limited knowledge around the strategy of combining the intake of several products in events in which performance benefits are seen with each product in isolation. The range in findings from studies involving combined use of different combinations of two supplements makes it difficult to derive a general

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2017 Sports medicine (Auckland, N.Z.)

23. 2018 ACC/AHA Clinical Performance and Quality Measures for Cardiac Rehabilitation: A Report of the American College of Cardiology/American Heart Association Task Force on Performance Measures

2018 ACC/AHA Clinical Performance and Quality Measures for Cardiac Rehabilitation: A Report of the American College of Cardiology/American Heart Association Task Force on Performance Measures 2018 ACC/AHA Clinical Performance and Quality Measures for Cardiac Rehabilitation: A Report of the American College of Cardiology/American Heart Association Task Force on Performance Measures | Circulation: Cardiovascular Quality and Outcomes Search Hello Guest! Login to your account Email Password Keep me (...) logged in Search April 2019 March 2019 February 2019 January 2019 This site uses cookies. By continuing to browse this site you are agreeing to our use of cookies. Free Access article Share on Jump to Free Access article 2018 ACC/AHA Clinical Performance and Quality Measures for Cardiac Rehabilitation: A Report of the American College of Cardiology/American Heart Association Task Force on Performance Measures , MD, MS, MAACVPR, FACC, FAHA , MD, FAHA , MD , PhD, FAHA , MHA , MPH , MD, PhD, FACC, FAHA

2018 American Heart Association

24. The Efficacy of a Pre-Workout Vegan Supplement on High-Intensity Cycling Performance in Healthy College-Aged Males. (PubMed)

The Efficacy of a Pre-Workout Vegan Supplement on High-Intensity Cycling Performance in Healthy College-Aged Males. There is a limited supply of sport nutrition supplements currently available for vegan or vegetarian athletes. In addition, the efficacy of a vegan or vegetarian pre-workout supplement that does not contain any processed ingredients or stimulants is currently unknown. The purpose of the current study was to examine the effects of an unprocessed vegan pre-workout supplement on high (...) -intensity cycling performance. Participants completed three separate cycling trials following the consumption of a vegan pre-workout supplement, an isocaloric processed supplement, or a zero-calorie placebo supplement. Each supplement was consumed 30 minutes prior to each trial, and each cycling trial was separated by a minimum of 72 hours. Supplements were administered using a randomized, double-blind cross-over design. Each cycling trial was performed at a workload equal to 80% VO2peak until

2018 Journal of dietary supplements Controlled trial quality: uncertain

25. Performance of muscle strength and fatigue tolerance in young trained women supplemented with caffeine. (PubMed)

Performance of muscle strength and fatigue tolerance in young trained women supplemented with caffeine. The aim of this paper was to verify the effect of caffeine supplementation on the muscular strength and fatigue tolerance of young trained women.Eight women of 25±5-years-old, who had undergone a minimum of 12 months of continuous resisted training, Body Mass Index 20-23 kg/m2 were submitted to 4 tests: One Repetition Maximum (1-RM, kg) to pull down (PD), Hack Squat (HS), Bench Press (BP (...) ), and Knee Extension Exhaustion (drop-set, 100/80/60 kg, repetitions) (DS). They performed the tests in 4 consecutive blocks one-week apart crossover system: basal without caffeine (B); first caffeine (C1); placebo with starch supplementation (P); second caffeine (C2). Caffeine supplementation 6 mg.kg-1 30 minutes before. The paired t-test and repeated ANOVA with Tukey-Kramer were performed.Respectively for B, C1, P and C2 to each test were PD (52, 54, 56, 55, P>0.05); HS (99, 109, 108, 121*; P<0.001

2018 The Journal of sports medicine and physical fitness Controlled trial quality: uncertain

26. The effect of 1,3-butanediol and carbohydrate supplementation on running performance. (PubMed)

The effect of 1,3-butanediol and carbohydrate supplementation on running performance. Ingested ketogenic agents offer the potential to enhance endurance performance via the provision of an alternative exogenous, metabolically efficient, glycogen-sparing fuel (i.e. ketone bodies). This study aimed to assess the impact of combined carbohydrate and 1,3-butanediol (CHO-BD) supplementation on endurance performance, blood beta-hydroxybutyrate (βHB) concentration and glycolytic activity, in comparison (...) to carbohydrate supplementation alone (CHO).Eleven male runners (age 38±12years, mass 67.3±6.5kg, height 174.5±5.0cm, [Formula: see text] 64.2±5.0ml⋅kg-1⋅min-1) performed two experimental trials in a randomised crossover design.Each trial consisted of 60min of submaximal running, followed by a 5km running time-trial (TT), and was performed following the ingestion of an energy matched ∼650ml drink (CHO-BD or CHO).There was no difference in TT completion time between the trials (CHO: 1265±93, CHO-BD: 1261±96s

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2018 Journal of Science and Medicine in Sport Controlled trial quality: uncertain

27. The effect of beetroot juice supplementation on repeat-sprint performance in hypoxia. (PubMed)

The effect of beetroot juice supplementation on repeat-sprint performance in hypoxia. This investigation assessed the effect of dietary nitrate (NO3-) supplementation, in the form of beetroot juice (BR), on repeat-sprint performance in normoxia and normobaric hypoxia. 12 male team-sport athletes (age 22.3 ± 2.6 y, VO2peak 53.1 ± 8.7 mL.kg-1.min-1) completed three exercise trials involving a 10 min submaximal warm-up and 4 sets of cycling repeat-sprint efforts (RSE; 9 × 4 s) at sea level (CON (...) for VO2 to be lower following BR at the end of the 10 min warm-up (ES = 0.50 ± 0.51). Dietary NO3- may not improve repeat-sprint performance in hypoxia but may reduce VO2 during submaximal exercise. Therefore, BR supplementation may be more effective for performance improvement during predominantly aerobic exercise.

2018 Journal of sports sciences Controlled trial quality: uncertain

28. Repeated-sprint performance and plasma responses following beetroot juice supplementation do not differ between recreational, competitive and elite sprint athletes. (PubMed)

Repeated-sprint performance and plasma responses following beetroot juice supplementation do not differ between recreational, competitive and elite sprint athletes. There is an ongoing debate whether highly trained athletes are less responsive to the ergogenic properties of nitrate. We assessed the effects of nitrate supplementation on plasma nitrate and nitrite concentrations and repeated-sprint performance in recreational, competitive and elite sprint athletes.In a randomized double-blinded (...) cross-over design, recreational cyclists (n = 20), national talent speed-skaters (n = 22) and Olympic-level track cyclists (n = 10) underwent two 6-day supplementation periods; 140 mL/d nitrate-rich (BR; ∼800 mg/d) and nitrate-depleted (PLA; ∼0.5 mg/d) beetroot juice. Blood samples were collected and three 30-s Wingate tests were performed.Plasma nitrate and nitrite concentrations were higher following BR vs PLA (P < .001), with no differences between sport levels (all P > .10). Peak power over

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2018 European journal of sport science Controlled trial quality: uncertain

29. The Impact of Supplementation With Novel Prototype Nutrition Bar on Nitric Oxide Bioavailability and Measures of Athlete Performance

The Impact of Supplementation With Novel Prototype Nutrition Bar on Nitric Oxide Bioavailability and Measures of Athlete Performance The Impact of Supplementation With Novel Prototype Nutrition Bar on Nitric Oxide Bioavailability and Measures of Athlete 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. The Impact of Supplementation With Novel Prototype Nutrition Bar on Nitric Oxide Bioavailability and Measures of Athlete Performance 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: NCT03686982

2018 Clinical Trials

30. The acute effects of a multi-ingredient pre-workout supplement on resting energy expenditure and exercise performance in recreationally active females (PubMed)

The acute effects of a multi-ingredient pre-workout supplement on resting energy expenditure and exercise performance in recreationally active females The use of dietary supplements to improve performance is becoming increasingly popular among athletes and fitness enthusiasts. Unfortunately, there is a tremendous lack of research being done regarding female athletes and the use of sport supplements. The purpose of this study was to examine the acute effects of multi-ingredient pre-workout (...) supplement (MIPS) ingestion on resting metabolism and exercise performance in recreationally-active females.Fifteen recreationally-active females participated in a randomized, double-blind, placebo controlled study. Subjects completed baseline, and two experimental testing sessions in a cross-over design fashion. Experimental testing included assessment of resting energy expenditure (REE), heart rate, and blood pressure following the ingestion of a MIPS or placebo. Subjects also completed a repetition

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2018 Journal of the International Society of Sports Nutrition Controlled trial quality: uncertain

31. The Impact of Acute (2 h) and Short-term (4 Days) Nitrate Supplementation in the Form of Red Beet Root Juice on Intense Intermittent Exercise Performance.

, exercise tolerance, and endurance exercise performance. In addition, more recent evidence suggests that dietary nitrate has the potential to enhance team-sport-specific high-intensity intermittent exercise performance. Indeed, chronic dietary nitrate supplementation (2-6 days) has been reported to increase the distance covered before exhaustion during the Yo-Yo intermittent recovery level 1 test, a well-established and ecologically valid test widely used to mimic the high-intensity running bouts (...) of soccer match-play. However, while these findings suggest that nitrate may be an effective ergogenic aid for team-sport players when consumed daily, it is currently unclear if the improvement in team-sport specific intermittent exercise performance can be achieved following a single bolus of dietary nitrate. Given the increasing interest and use of dietary nitrate as an ergogenic aid by team-sport players, establishing the shortest period of supplementation required to elicit an ergogenic effect

2018 Clinical Trials

32. Internal Biological Clocks and Sport Performance

Internal Biological Clocks and Sport Performance Internal Biological Clocks and Sport Performance | BJSM blog - social media's leading SEM voice by By Dr Nicky Keay Circadian Hormone Release These mechanisms rely on negative feedback loops found in many biological systems where periodicity of gene expression is key, such as the . Internal biological clocks allow for anticipation of the requirements from body systems at different times of the day and the ability to adapt to changes in external (...) lifestyle factors. ? The importance of integration of , such as timing of eating, activity and sleep with our internal biological clocks is revealed in situations of circadian misalignment that lead to suboptimal health and disease states in the longer term. Consideration of our biochronometers is especially important for athletes in order to synchronise and thus optimise health and sports performance. Athletic Performance in a cycle time trial was found to be better in the evening, rather than

2017 British Journal of Sports Medicine Blog

33. Fatigue, sport performance and hormones..more on the endocrine system

Fatigue, sport performance and hormones..more on the endocrine system Fatigue, sport performance and hormones..more on the endocrine system | BJSM blog - social media's leading SEM voice by By Dr Nicky Keay How do you feel on Monday morning, when the alarm wakes you at 7am with a day of work ahead after the weekend? A bit tired, slightly lethargic, sluggish, maybe a little bit down, perhaps a few regrets about somewhat too much alcohol/food over weekend, frustrated that the exercise training (...) schedule didn’t go according to plan? There are many causes of fatigue and sport underperformance: Endocrine, immunological, infective, metabolic, haematological, nutritional, digestive, neoplastic….. The adrenal gland in the in particular has come in for some bad press recently. Adrenal woes Undoubtedly the adrenal glands have a case to answer. Situated above the kidneys these Endocrine glands produce glucocorticoids, mineralocorticoids, androgens from the adrenal cortex and from the adrenal medulla

2017 British Journal of Sports Medicine Blog

34. Sports Endocrinology – what does it have to do with performance?

Sports Endocrinology – what does it have to do with performance? Sports Endocrinology - what does it have to do with performance? | BJSM blog - social media's leading SEM voice by By Dr Nicky Keay The Endocrine system comprises various glands distributed throughout the body that secrete hormones to circulate in the blood stream. These chemical messengers, have effects on a vast range of tissue types, organs and therefore regulate metabolic and physiological processes occurring in systems (...) impair sport performance and have potential long term adverse for athletes. This picture is seen in the female athlete triad (disordered eating, amenorrhoea and low density) and relative energy deficiency in sport ( ) with multi-system effects. In this situation there is a mismatch between dietary energy intake (including diet quality) and energy expenditure through training. The net result is a shift to an energy saving mode in the Endocrine system, which impedes both improvement in sport

2017 British Journal of Sports Medicine Blog

35. Beta-alanine supplementation enhances judo-related performance in highly-trained athletes. (PubMed)

Beta-alanine supplementation enhances judo-related performance in highly-trained athletes. In official judo competitions, athletes usually engage in 5-7 matches in the same day, performing numerous high-intensity efforts interspersed by short recovery intervals. Thus, glycolytic demand in judo is high and acidosis may limit performance. Carnosine is a relevant intracellular acid buffer whose content is increased with beta-alanine supplementation. Thus, we hypothesized that beta-alanine (...) supplementation improved the number of throws per set and the total number of throws (both p<0.05). Placebo did not change these variables (both p>0.05). Blood pH and HCO3- reduced after exercise (all p<0.001), with no between-group differences (all p>0.05). However, the lactate response to exercise increased in the beta-alanine group as compared to placebo (p<0.05).In conclusion, 4 weeks of beta-alanine supplementation effectively enhance judo-related performance in highly-trained athletes.Copyright © 2016

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2017 Journal of Science and Medicine in Sport Controlled trial quality: uncertain

36. Acute citrulline malate supplementation improves upper- and lower-body submaximal weightlifting exercise performance in resistance-trained females. (PubMed)

consumed CM versus placebo (7.9 ± 0.3 and 8.6 ± 0.2, respectively). The supplement consumed exhibited no significant effects on heart rate at any time point.Acute CM supplementation in females increased upper- and lower-body resistance exercise performance and decreased RPE during upper-body exercise. These data indicate that athletes competing in sports with muscular endurance-based requirements may potentially improve performance by acutely supplementing CM. (...) Acute citrulline malate supplementation improves upper- and lower-body submaximal weightlifting exercise performance in resistance-trained females. Citrulline malate (CM) is a nonessential amino acid that increases exercise performance in males. However, based on physiological differences between genders, these results cannot be extrapolated to females. Therefore, the purpose of this investigation was to evaluate effects of acute CM supplementation on upper- and lower-body weightlifting

2017 European journal of nutrition Controlled trial quality: uncertain

37. Effects of a High Protein Food Supplement on Physical Activity, Motor Performance and Health Related Quality of Life of HIV Infected Botswana Children on Anti-Retroviral Therapy (ART) (PubMed)

Effects of a High Protein Food Supplement on Physical Activity, Motor Performance and Health Related Quality of Life of HIV Infected Botswana Children on Anti-Retroviral Therapy (ART) Despite existing evidence about the benefits of nutrition, physical activity (PA) and sport to the overall health and wellbeing of children, knowledge gaps remain on this relationship in children living with chronic conditions like HIV/AIDS. Such knowledge should inform context specific programs that could enhance (...) micronutrients) food supplement, while the control group (n = 104) received a sorghum plus micronutrients supplement. Participants were followed over 12 months. Anthropometric measures, PA, motor performance, and health related quality of life (HRQL) were collected at baseline, 6 and 12 months.Mixed repeated-measures ANOVA revealed a significant time effect of the food supplement on target variables except body fat percentage, speed, and school functioning. Time × treatment interaction was found for physical

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2017 AIMS public health Controlled trial quality: uncertain

38. The effect of l-arginine supplementation on body composition and performance in male athletes: a double-blinded randomized clinical trial. (PubMed)

The effect of l-arginine supplementation on body composition and performance in male athletes: a double-blinded randomized clinical trial. Athletes used a lot of dietary supplements to achieve the more muscle mass and improve their athletic performance. The objective of this study was to investigate the effect of l-arginine supplementation on sport performance and body composition in male soccer players.This double-blinded, randomized and placebo-controlled trial was conducted on 56 male soccer (...) players, with age range of 16-35, who referred to sport clubs in Isfahan, Iran. Subjects were randomly assigned to either l-arginine or placebo groups. Athletes received daily either 2 g per day l-arginine supplement or the same amount of placebo (maltodextrin) for 45 days. Sport performance and also body mass index (BMI), body fat mass (BFM) and lean body mass (LBM) were measured at the beginning and end of the study. Also, 3-day dietary records were collected at three different time points (before

2017 European journal of clinical nutrition Controlled trial quality: predicted high

39. Performance and Side Effects of Supplementation with N-Acetylcysteine: A Systematic Review and Meta-Analysis. (PubMed)

Performance and Side Effects of Supplementation with N-Acetylcysteine: A Systematic Review and Meta-Analysis. N-Acetylcysteine (NAC) is a promising antioxidant supplement with potential as an acute strategy to enhance performance in elite sport, but there are concerns about its side effects with high doses.To review the current literature and evaluate the effects of NAC supplementation on sport performance and the risk of adverse effects.The literature up to May 2016 was searched on MEDLINE (...) (PubMed), EMBASE, SPORTDiscus, Google Scholar and Scopus databases to identify all studies investigating the effects of NAC supplementation on exercise performance and/or side effects experienced. Performance outcomes from each study were converted to the percent effect equivalent to mean power output in a time trial. All pooled analyses were based on random-effects models generated by Review Manager (RevMan) [Computer program], version 5.3 (The Nordic Cochrane Centre, The Cochrane Collaboration

2017 Sports medicine (Auckland, N.Z.)

40. Effects of Vitamin D Supplementation on Serum 25-Hydroxyvitamin D Concentrations and Physical Performance in Athletes: A Systematic Review and Meta-analysis of Randomized Controlled Trials. (PubMed)

effect of vitamin D supplementation during 12 weeks of follow-up.Despite achieving sufficiency in vitamin D concentrations from ≥3000 IU supplementation, physical performance did not significantly improve. Between-study heterogeneity was large, and well-designed RCTs examining the effect of vitamin D supplementation on serum 25(OH)D concentrations, physical performance, and injuries in different sports, latitudes, ethnicities, and vitamin D status are needed. (...) Effects of Vitamin D Supplementation on Serum 25-Hydroxyvitamin D Concentrations and Physical Performance in Athletes: A Systematic Review and Meta-analysis of Randomized Controlled Trials. There is currently no systematic review examining the effects of vitamin D supplementation among athletes. A rigorous systematic review and meta-analysis is important to provide a balanced view of current knowledge on the effect of vitamin D on serum 25-hydroxyvitamin D [25(OH)D] concentrations and physical

2017 Sports medicine (Auckland, N.Z.)

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