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https://www.readbyqxmd.com/read/28097488/polyphenols-and-performance-a-systematic-review-and-meta-analysis
#1
REVIEW
Vaughan Somerville, Cameron Bringans, Andrea Braakhuis
BACKGROUND: Polyphenols exert physiological effects that may impact athletic performance. Polyphenols are antioxidants that have been noted to hinder training adaptations, yet conversely they stimulate stress-related cell signalling pathways that trigger mitochondrial biogenesis and influence vascular function. OBJECTIVE: To determine the overall effect of polyphenols on human athletic performance. METHODS: A search strategy was completed using MEDLINE, EMBASE, CINAHL, AMED and SPORTDiscus in April 2016...
January 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28079916/adolescent-shin-pain
#2
Jeremy Korsh, Douglas Matijakovich, Charles Gatt
Shin pain is a common complaint in adolescent athletes. The term "shin splints" has historically been applied to these patients. Shin splints, more often than not, refers to a stress reaction of the tibia from overuse. Overuse injuries occur when repetitive microtrauma to the bone exceeds the biologic healing potential. Diagnosis is based on typical history and physical examination findings. Plain radiographs and advanced imaging are rarely necessary but can provide valuable prognostic information. Treatment consists of adequate rest and exercise modification...
January 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28078878/vitamin-a-decreases-after-a-maximal-incremental-stress-test-in-non-professional-male-runners-with-low-aerobic-performance
#3
P Izzicupo, B Ghinassi, M A D'Amico, T Bucciarelli, S Gallina, A Di Baldassarre
The data on the effects of aerobic training on plasma antioxidant vitamins are conflicting. Additionally, most studies focus on the oxidative profiles of professional athletes, but limited information is available for amateur athlete populations. The aim of this study was to evaluate the effects of high-intensity exercise on antioxidant vitamins in non-professional runners with varying levels of aerobic power. Eighty-one male runners underwent an incremental test to exhaustion. The study population was then divided into the following tertiles according to VO2max: Group L (LowVO2max, less than 44...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28067740/update-on-management-of-type-1-diabetes-and-type-2-diabetes-in-athletes
#4
Jane E Yardley, Sheri R Colberg
Optimal blood glucose management still remains the biggest challenge in active individuals with diabetes, particularly in insulin users, but some newer strategies have been introduced to maintain blood glucose control. Recent studies emphasize the importance of exercise intensity on glycemic balance. In individuals with type 1 and type 2 diabetes, both resistance and high-intensity intermittent exercise have been shown to confer beneficial physiological adaptations in training studies, while also showing acute glycemic benefits from single sessions...
January 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28065583/left-ventricular-contraction-pattern-in-chronic-aortic-regurgitation-and-preserved-ejection-fraction-simultaneous-stress-strain-analysis-by-three-dimensional-echocardiography
#5
Kaspar Broch, Stefano F de Marchi, Richard Massey, Jonny Hisdal, Svend Aakhus, Lars Gullestad, Stig Urheim
BACKGROUND: The role of speckle-tracking echocardiography in the assessment of chronic aortic regurgitation (AR) is not established. Load dependency may encumber the interpretation of strain measurements in the chronically overloaded left ventricle. The aim of this study was to investigate the mechanisms of left ventricular (LV) contraction patterns in asymptomatic patients with moderate to severe AR and preserved ejection fractions. METHODS: In this prospective, cross-sectional study, 31 patients with moderate to severe AR, 15 elite endurance athletes, and 17 healthy control subjects were examined using three-dimensional speckle-tracking echocardiography...
January 5, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28060567/correlation-of-head-impacts-to-change-in-balance-error-scoring-system-scores-in-division-i-men-s-lacrosse-players
#6
Theresa L Miyashita, Eleni Diakogeorgiou, Kaitlyn Marrie
BACKGROUND: Investigation into the effect of cumulative subconcussive head impacts has yielded various results in the literature, with many supporting a link to neurological deficits. Little research has been conducted on men's lacrosse and associated balance deficits from head impacts. HYPOTHESES: (1) Athletes will commit more errors on the postseason Balance Error Scoring System (BESS) test. (2) There will be a positive correlation to change in BESS scores and head impact exposure data...
January 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28050549/bilateral-stress-fracture-of-femoral-neck-in-non-athlete-case-report
#7
Ubiratan Stefani de Oliveira, Pedro José Labronici, André João Neto, Alexandre Yukio Nishimi, Robinson Esteves Santos Pires, Luiz Henrique Penteado Silva
Bilateral stress fracture of femoral neck in healthy young patients is an extremely rare entity, whose diagnostic and treatment represent a major challenge. Patients with history of hip pain, even non-athletes or military recruits, should be analyzed to achieve an early diagnosis and prevent possible complications from the surgical treatment. This report describes a 43-year-old male patient, non-athlete, without previous diseases, who developed bilateral stress fracture of femoral neck without displacement...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28038316/association-of-the-female-athlete-triad-risk-assessment-stratification-to-the-development-of-bone-stress-injuries-in-collegiate-athletes
#8
Adam S Tenforde, Jennifer L Carlson, Audrey Chang, Kristin L Sainani, Rebecca Shultz, Jae Hyung Kim, Phil Cutti, Neville H Golden, Michael Fredericson
BACKGROUND: The female athlete triad (referred to as the triad) contributes to adverse health outcomes, including bone stress injuries (BSIs), in female athletes. Guidelines were published in 2014 for clinical management of athletes affected by the triad. PURPOSE: This study aimed to (1) classify athletes from a collegiate population of 16 sports into low-, moderate-, and high-risk categories using the Female Athlete Triad Cumulative Risk Assessment score and (2) evaluate the predictive value of the risk categories for subsequent BSIs...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28035584/from-lab-to-real-world-heat-acclimation-considerations-for-elite-athletes
#9
Julia R Casadio, Andrew E Kilding, James D Cotter, Paul B Laursen
As major sporting events are often held in hot environments, increased interest in ways of optimally heat acclimating athletes to maximise performance has emerged. Heat acclimation involves repeated exercise sessions in hot conditions that induce physiological and thermoregulatory adaptations that attenuate heat-induced performance impairments. Current evidence-based guidelines for heat acclimation are clear, but the application of these recommendations is not always aligned with the time commitments and training priorities of elite athletes...
December 29, 2016: Sports Medicine
https://www.readbyqxmd.com/read/28027463/quantifying-knee-mechanics-during-balance-training-exercises
#10
Lauren C Benson, Thomas G Almonroeder, Kristian M O'Connor
Patellofemoral pain (PFP) is common among runners and those recovering from anterior cruciate ligament reconstruction. Training programs designed to prevent or treat injuries often include balance training, although balance interventions have been reported to coincide with more knee injuries. Knowledge of the effect of balance exercises on knee mechanics may be useful when designing training programs. High knee abduction moment has been implicated in the development of PFP, and imbalance between vastus lateralis (VL) and vastus medialis oblique (VMO) may contribute to patellofemoral stress...
December 24, 2016: Human Movement Science
https://www.readbyqxmd.com/read/28018192/differences-in-resting-state-functional-connectivity-between-young-adult-endurance-athletes-and-healthy-controls
#11
David A Raichlen, Pradyumna K Bharadwaj, Megan C Fitzhugh, Kari A Haws, Gabrielle-Ann Torre, Theodore P Trouard, Gene E Alexander
Expertise and training in fine motor skills has been associated with changes in brain structure, function, and connectivity. Fewer studies have explored the neural effects of athletic activities that do not seem to rely on precise fine motor control (e.g., distance running). Here, we compared resting-state functional connectivity in a sample of adult male collegiate distance runners (n = 11; age = 21.3 ± 2.5) and a group of healthy age-matched non-athlete male controls (n = 11; age = 20.6 ± 1.1), to test the hypothesis that expertise in sustained aerobic motor behaviors affects resting state functional connectivity in young adults...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28017946/-the-study-for-effect-of-running-on-bone
#12
Naomi Omi
Running-exercise is a weight-bearing-exercise. Power of an effect for running-exercise might be different by exercise intensity, running speed, and duration time. In general, running-exercise could be effective on bone. However, in case of Female Athlete Triad, under the condition of low energy availability running-exercise should not be effective positively for bone. Influence of appropriate mechanical stress, stimulate calcium absorption, and so on through running-exercise could be effective positively for bone...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28017518/effectiveness-of-a-stress-management-pilot-program-aimed-at-reducing-the-incidence-of-sports-injuries-in-young-football-soccer-players
#13
Aurelio Olmedilla-Zafra, Victor J Rubio, Enrique Ortega, Alexandre García-Mas
OBJECTIVES: Several attempts to reduce the incidence of sport injuries using psychosocial interventions produced fruitful, although inconclusive results. This paper presents the effectiveness and implementation issues of a pilot 3-month stress-management and muscle relaxation program aimed at reducing sport injury incidence. DESIGN: Pre-post treatment-non treatment group comparison. PROGRAM ADMINISTRATION: The program was administered by a trained psychologist on a once-a-week, 1-h session basis...
September 6, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28010854/a-tale-of-two-runners-a-case-report-of-athletes-experiences-with-eating-disorders-in%C3%A2-college
#14
Paula A Quatromoni
Athletes are at higher risk than the general population for eating disorders, and risk is heightened for athletes in thin-build sports, including track. Collegiate athletes are particularly vulnerable to disordered eating when the transition from home to the college environment adds to the stress of performance pressures and the high demands of the sport environment. Male and female athletes who develop eating disorders share some common characteristics, yet their experiences can be quite different, in part as a consequence of their sex and how eating disorders develop, and are recognized, acknowledged, and treated, within the culture of sports...
January 2017: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/27994983/psychometric-properties-of-the-perceived-stress-scale-pss-measurement-invariance-between-athletes-and-non-athletes-and-construct-validity
#15
Yi-Hsiang Chiu, Frank Jing-Horng Lu, Ju-Han Lin, Chiao-Lin Nien, Ya-Wen Hsu, Hong-Yu Liu
BACKGROUND: Although Perceived Stress Scale (PSS, Cohen, Kamarack & Mermelstein, 1983) has been validated and widely used in many domains, there is still no validation in sports by comparing athletes and non-athletes and examining related psychometric indices. PURPOSE: The purpose of this study was to examine the measurement invariance of PSS between athletes and non-athletes, and examine construct validity and reliability in the sports contexts. METHODS: Study 1 sampled 359 college student-athletes (males = 233; females = 126) and 242 non-athletes (males = 124; females = 118) and examined factorial structure, measurement invariance and internal consistency...
2016: PeerJ
https://www.readbyqxmd.com/read/27994554/effect-of-environmental-and-feedback-interventions-on-pacing-profiles-in-cycling-a-meta-analysis
#16
REVIEW
Michael J Davies, Bradley Clark, Marijke Welvaert, Sabrina Skorski, Laura A Garvican-Lewis, Philo Saunders, Kevin G Thompson
In search of their optimal performance athletes will alter their pacing strategy according to intrinsic and extrinsic physiological, psychological and environmental factors. However, the effect of some of these variables on pacing and exercise performance remains somewhat unclear. Therefore, the aim of this meta-analysis was to provide an overview as to how manipulation of different extrinsic factors affects pacing strategy and exercise performance. Only self-paced exercise studies that provided control and intervention group(s), reported trial variance for power output, disclosed the type of feedback received or withheld, and where time-trial power output data could be segmented into start, middle and end sections; were included in the meta-analysis...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27991663/is-the-ice-bath-finally-melting-cwi-is-no-greater-than-active-recovery-upon-local-and-systemic-inflammatory-cellular-stress-in-humans
#17
R Allan, Mawhinney Cr
Over the past decade, significant research has focussed on optimising the recovery of elite athletes. The premise behind such a theory is that sub-optimal recovery often leads to fatigue, reducing the quality of subsequent training sessions and/or competitive performances, whilst potentially hindering adaptive processes. There is now a plethora of research focussing on the impact of one such recovery strategy, cold-water immersion (CWI), and the benefits it may provide post-exercise. This article is protected by copyright...
December 19, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27983587/role-of-redox-signaling-and-inflammation-in-skeletal-muscle-adaptations-to-training
#18
REVIEW
Maria Carmen Gomez-Cabrera, Jose Viña, Li Li Ji
The inflammatory response to exercise-induced muscle damage has been extensively described. Exercise has important modulatory effects on immune function. These effects are mediated by diverse factors including pro-inflammatory cytokines, classical stress hormones, and hemodynamic effects leading to cell redistribution. As has been reported regarding oxidative stress, inflammation can have both detrimental and beneficial effects in skeletal muscle. In this review we will address the role of inflammation on protein metabolism in skeletal muscle...
December 13, 2016: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27951526/long-term-health-outcomes-after-exposure-to-repeated-concussion-in-elite-level-rugby-union-players
#19
T M McMillan, P McSkimming, J Wainman-Lefley, L M Maclean, J Hay, A McConnachie, W Stewart
BACKGROUND: There is continuing concern about effects of concussion in athletes, including risk of the neurodegenerative disease chronic traumatic encephalopathy. However, information on long-term health and wellbeing in former athletes is limited. METHOD: Outcome after exposure to repeated brain injury was investigated in 52 retired male Scottish international rugby players (RIRP) and 29 male controls who were similar in age and social deprivation. Assessment included history of playing rugby and traumatic brain injury, general and mental health, life stress, concussion symptoms, cognitive function, disability and markers of chronic stress (allostatic load)...
October 7, 2016: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/27941488/no-differences-between-alter-g-trainer-and-active-and-passive-recovery-strategies-on-isokinetic-strength-systemic-oxidative-stress-and-perceived-muscle-soreness-after-exercise-induced-muscle-damage
#20
Matthew B Cooke, Carrie Nix, Lori Greenwood, Mike Greenwood
The incidence of muscle injuries is prevalent in elite sport athletes as well as weekend warriors and strategies that safely and effectively hasten recovery are highly desirable. The purpose of this study was to examine the differences between three recovery methods after eliciting muscle damage in recreationally active men relative to maximal isokinetic contractions, perceived muscle soreness and psychological mood states. Twenty-five recreationally active men (22.15±3.53yrs, 75.75±11.91kg, 180.52±7.3cm) were randomly matched by VO2 peak (53...
November 28, 2016: Journal of Strength and Conditioning Research
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