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https://www.readbyqxmd.com/read/28429998/the-efficacy-of-a-pre-workout-vegan-supplement-on-high-intensity-cycling-performance-in-healthy-college-aged-males
#1
Gabrielle Gallien, David Bellar, Greggory R Davis
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...
April 21, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28419027/athletes-intending-to-use-sports-supplements-are-more-likely-to-respond-to-a-placebo
#2
Philip Hurst, Abby Foad, Damian Coleman, Chris Beedie
PURPOSE: We investigated associations between athletes' use of sport supplements and their responsiveness to placebo and nocebo interventions. METHODS: Participants (n=627) reported their intention to use, and actual use of, sport supplements. They then completed a 5x20m repeat sprint protocol in the baseline condition, prior to being randomized to one of three treatments. Participants in the positive-belief treatment were administered an inert capsule described as a potent supplement which would improve sprint performance...
April 18, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28416353/eating-disorders-and-weight-control-behaviors-change-over-a-collegiate-sport-season
#3
Alexandra Thompson, Trent Petrie, Carlin Anderson
OBJECTIVES: Determine whether the prevalence of eating disorder classifications (i.e., clinical eating disorder, subclinical eating disorder, and asymptomatic) and pathogenic weight control behaviors (e.g., bingeing, vomiting) change over a five-month sport season. DESIGN: Longitudinal study. METHODS: Female collegiate gymnasts and swimmers (N=325) completed the Questionnaire for Eating Disorder Diagnoses as well as six items from the Bulimia Test-Revised at Time 1 (two weeks into the beginning of their athletic season) and Time 2 (final two weeks of the athletic season); data collections were separated by five months...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28410414/phthalate-exposure-and-reproductive-hormones-and-sex-hormone-binding-globulin-before-puberty-phthalate-contaminated-foodstuff-episode-in-taiwan
#4
Hui-Ju Wen, Chu-Chih Chen, Ming-Tsang Wu, Mei-Lien Chen, Chien-Wen Sun, Wen-Chiu Wu, I-Wen Huang, Po-Chin Huang, Tzu-Yun Yu, Chao A Hsiung, Shu-Li Wang
BACKGROUND: In May 2011, a major incident involving phthalates-contaminated foodstuffs occurred in Taiwan. Di-(2-ethylhexyl) phthalate (DEHP) was added to foodstuffs, mainly juice, jelly, tea, sports drink, and dietary supplements. Concerns arose that normal pubertal development, especially reproductive hormone regulation in children, could be disrupted by DEHP exposure. OBJECTIVE: To investigate the association between phthalate exposure and reproductive hormone levels among children following potential exposure to phthalate-tainted foodstuffs...
2017: PloS One
https://www.readbyqxmd.com/read/28409508/performance-of-muscle-strength-and-fatigue-tolerance-in-young-trained-women-supplemented-with-caffeine
#5
Carlos A Fett, Natalia Magalhães Aquino, Jairo Schantz, Camila F Brandão, Joás D de Araújo Cavalcanti, Waleria C Rezende Fett
BACKGROUND: Verify the effect of caffeine supplementation on the muscular strength and fatigue tolerance of young trained women. METHODS: 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 four 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 perform the tests in four consecutive blocks one-week apart crossover system: basal without caffeine (B); first caffeine (C1); placebo with starch supplementation (P); second caffeine (C2)...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28387575/nutritional-considerations-for-bouldering
#6
Edward J Smith, Ryan Storey, Mayur K Ranchordas
Bouldering competitions are held up to International level and governed by the International Federation of Sport Climbing. Bouldering has been selected to feature at the 2020 Olympic Games in Tokyo, however, physiological qualities and nutritional requirements to optimise performance remain inadequately defined due to large gaps in the literature. The primary goals of training include optimising the capacity of the anaerobic energy systems and developing sport-specific strength, with emphasis on the isometric function of the forearm flexors responsible for grip...
April 7, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28368321/sport-nutrition-knowledge-behaviors-and-beliefs-of-high-school-soccer-players
#7
Melinda M Manore, Megan M Patton-Lopez, Yu Meng, Siew Sun Wong
For adolescent athletes (14-18 years), data on sport nutrition knowledge, behaviors and beliefs are limited, especially based on sex, race/ethnicity and socioeconomic status. High school soccer players (n = 535; 55% female; 51% White, 41% Latino; 41% National School Lunch Program (NSLP) participants (80% Latino)) completed two questionnaires (demographic/health history and sport nutrition). The sport nutrition knowledge score was 45.6% with higher scores in NSLP-Whites vs. NSLP-Latinos (p < 0.01). Supplement knowledge differed by sex (16% lower in females; p = 0...
April 1, 2017: Nutrients
https://www.readbyqxmd.com/read/28363689/medication-and-supplement-use-in-disability-football-world-championships
#8
Daniel Broman, Osman Hassan Ahmed, Philippe M Tscholl, Richard Weiler
BACKGROUND: Individuals with an impairment make up over 15% of the world's population, many of whom can benefit greatly from participation in sport. The provision of medical services in disability sport is a challenging area with a lack of scientific evidence. Given the positive impact that sport can have on the people with an impairment, it is vital that measures are taken to better understand the medical issues posed by disability sport. It is well established that medications and supplements are over-used in sport, particularly within professional football, but there is no current evidence on medication or supplement use in elite disability football...
March 28, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28349034/repeated-sprint-ability-is-not-enhanced-by-caffeine-arginine-and-branched-chain-amino-acids-in-moderately-trained-soccer-players
#9
Andrea Ermolao, Tobia Zanotto, Nicolò Carraro, Tommaso Fornasier, Marco Zaccaria, Daniel Neunhaeuserer, Marco Bergamin
The aim was to investigate the effect of a dietary supplementation on the repeated sprint ability (RSA) performance in recreationally trained team sports athletes. Twelve young men underwent a RSA exercise protocol in five trials, in which participants ingested carbohydrates (CHO) plus caffeine (Caf), CHO plus arginine (Arg), CHO plus branched-chain amino acids (BCAA), CHO plus Caf, Arg, and BCAA (ALL), and CHO only. Heart rate, oxygen saturation, hematic lactate, ratings of perceived exertion, average sprint time, total time, best sprint time, peak power, and average power were taken...
February 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28338362/the-effects-of-caffeine-taurine-or-caffeine-taurine-co-ingestion-on-repeat-sprint-cycling-performance-and-physiological-responses
#10
Rory Warnock, Owen Jeffries, Stephen Patterson, Mark Waldron
PURPOSE: This study investigated the effects of caffeine (C), taurine (T), caffeine and taurine co-ingestion (C+T) or placebo (P) on repeated Wingate cycling performance and associated physiological responses. METHODS: Seven male team sports players participated in a randomised, single-blind, cross-over study, where they completed three Wingate tests, each separated by 2-min, an hour after ingesting: C (5 mg/kg BM), T (50 mg/kg BM), C+T (5 mg/kg BM + 50 mg/kg BM) or P (5 mg/kg BM) in a gelatine capsule...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28332171/sport-and-male-sexuality
#11
REVIEW
P Sgrò, L Di Luigi
The relationships between sport and sexuality in males are of great social and clinical interest, because of sports and motor activities that highly promote social and sexual relationships. Even if few literature exist, two main questions should be taken into account: whether and how physical exercise and sport positively or negatively influence sexual health and behavior and/or whether and how sexual behavior may affect a sub-sequent sport performance. Physical exercise and sport per se can influence, positively or negatively, the hypothalamic-pituitary-testicular axis function and, consequently, the individual's reproductive and/or sexual health...
March 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28332111/practical-issues-in-evidence-based-use-of-performance-supplements-supplement-interactions-repeated-use-and-individual-responses
#12
REVIEW
Louise M Burke
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...
March 2017: Sports Medicine
https://www.readbyqxmd.com/read/28301451/traumatic-brain-injury-related-emergency-department-visits-hospitalizations-and-deaths-united-states-2007-and-2013
#13
Christopher A Taylor, Jeneita M Bell, Matthew J Breiding, Likang Xu
PROBLEM/CONDITION: Traumatic brain injury (TBI) has short- and long-term adverse clinical outcomes, including death and disability. TBI can be caused by a number of principal mechanisms, including motor-vehicle crashes, falls, and assaults. This report describes the estimated incidence of TBI-related emergency department (ED) visits, hospitalizations, and deaths during 2013 and makes comparisons to similar estimates from 2007. REPORTING PERIOD: 2007 and 2013. DESCRIPTION OF SYSTEM: State-based administrative health care data were used to calculate estimates of TBI-related ED visits and hospitalizations by principal mechanism of injury, age group, sex, and injury intent...
March 17, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/28277983/l-arginine-supplementation-improves-rats-antioxidant-system-and-exercise-performance
#14
E P Silva, L S Borges, C Mendes-da-Silva, S M Hirabara, R H Lambertucci
Reactive species have great importance in sports performance, once they can directly regulate energy production, muscular contraction, inflammation, and fatigue. Therefore, the redox control is essential for athletes' performance. Studies demonstrated that l-arginine has an important role in the synthesis of urea, cell growth and production of nitric oxide, moreover, there are indications that it is also able to induce benefits to muscle antioxidant system through the upregulation of some antioxidant enzymes, and by inhibiting some pathways of reactive species production...
March 22, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28271601/phytochemical-compounds-in-sport-nutrition-synephrine-and-hydroxycitric-acid-hca-as-examples-for-evaluation-of-possible-health-risks
#15
REVIEW
Nadiya Bakhiya, Rainer Ziegenhagen, Karen I Hirsch-Ernst, Birgit Dusemund, Klaus Richter, Katharina Schultrich, Sophie Pevny, Bernd Schäfer, Alfonso Lampen
Numerous food supplements contain phytochemical compounds as active ingredients. Though such supplements are often perceived by consumers as being risk-free, the safety of many of them is currently uncertain. The present review provides two examples for risk assessment for phytochemical ingredients which are used in certain supplements marketed for sportspeople - synephrine (extracted from fruits of Citrus aurantium) and hydroxycitric acid (HCA, isolated from fruits of Garcinia cambogia). Animal and human studies as well as case reports provide evidence for cardiovascular effects due to ingestion of high synephrine doses, especially in combination with caffeine and physical exertion...
March 8, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28245746/cervical-traction-for-managing-neck-pain-a-survey-of-physical-therapists-in-the-united-states
#16
Timothy J Madson, John H Hollman
Study Design Cross-sectional survey. Objective To examine the use of traction by physical therapists for patients with neck pain, including how and when traction is used, the delivery modes and parameters, supplemental interventions, and influence of professional demographics on usage. Background Systematic reviews provide little support for traction in managing neck pain. While traction usage among physical therapists in other countries has been described, usage in the United States has not been examined. Methods A random sample of 4000 Orthopaedic Section members of the American Physical Therapy Association were surveyed...
March 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28218878/imaging-of-muscle-injuries-in-sports-medicine-sports-imaging-series
#17
Ali Guermazi, Frank W Roemer, Philip Robinson, Johannes L Tol, Ravindar R Regatte, Michel D Crema
In sports-related muscle injuries, the main goal of the sports medicine physician is to return the athlete to competition-balanced against the need to prevent the injury from worsening or recurring. Prognosis based on the available clinical and imaging information is crucial. Imaging is crucial to confirm and assess the extent of sports-related muscle injuries and may help to guide management, which directly affects the prognosis. This is especially important when the diagnosis or grade of injury is unclear, when recovery is taking longer than expected, and when interventional or surgical management may be necessary...
March 2017: Radiology
https://www.readbyqxmd.com/read/28212284/micronutrient-intakes-in-553-dutch-elite-and-sub-elite-athletes-prevalence-of-low-and-high-intakes-in-users-and-non-users-of-nutritional-supplements
#18
Floris Wardenaar, Naomi Brinkmans, Ingrid Ceelen, Bo Van Rooij, Marco Mensink, Renger Witkamp, Jeanne De Vries
This study investigated whether athletes meet micronutrient recommendations and whether the adequacy of their intake is related to the use of dietary supplements, sport nutrition products or a combination. Micronutrient intakes of 553 Dutch (sub-) elite athletes were assessed using web-based 24-h dietary recalls with accompanying nutritional supplement questionnaires. In the majority of both users and non-users of dietary supplements, vitamin D intake was below the estimated average requirement (AR) if supplements were not included in the analysis...
February 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28197144/detection-and-enumeration-of-spore-forming-bacteria-in-powdered-dairy-products
#19
REVIEW
Aoife J McHugh, Conor Feehily, Colin Hill, Paul D Cotter
With the abolition of milk quotas in the European Union in 2015, several member states including Ireland, Luxembourg, and Belgium have seen year on year bi-monthly milk deliveries to dairies increase by up to 35%. Milk production has also increased outside of Europe in the past number of years. Unsurprisingly, there has been a corresponding increased focus on the production of dried milk products for improved shelf life. These powders are used in a wide variety of products, including confectionery, infant formula, sports dietary supplements and supplements for health recovery...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28182502/effect-of-dietary-nitrate-supplementation-on-swimming-performance-in-trained-swimmers
#20
Sam Lowings, Oliver Michael Shannon, Kevin Deighton, Jamie Matu, Matthew John Barlow
Nitrate supplementation appears to be most ergogenic when oxygen availability is restricted and subsequently may be particularly beneficial for swimming performance due to the breath-hold element of this sport. This represents the first investigation of nitrate supplementation and swimming time-trial (TT) performance. In a randomised double-blind repeated-measures crossover study, ten (5male, 5female) trained swimmers ingested 140ml nitrate-rich (~12.5mmol nitrate) or nitrate-depleted (~0.01mmol nitrate) beetroot juice...
February 9, 2017: International Journal of Sport Nutrition and Exercise Metabolism
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