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https://www.readbyqxmd.com/read/28644195/considerations-for-selecting-field-based-strength-and-power-fitness-tests-to-measure-asymmetries
#1
Chris Bishop, Anthony Turner, Shyam Chavda, Paul Jarvis, Paul Read
The prevalence of lower limb asymmetries has been reported in numerous studies; however, methodological differences exist in the way they can be detected. Strength and jumping-based tasks have been most commonly used to examine these differences across both athlete and non-athlete populations. The aim of this review was to critically analyze the utility of strength and jumping tests that are frequently used to measure asymmetry. Reliability, validity, and considerations for assessment are examined to enhance test accuracy and effectiveness in the quantification of asymmetries during strength and jumping-based tasks...
June 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28639825/sync-or-separate-no-compelling-evidence-for-unintentional-interpersonal-coordination-between-usain-bolt-and-tyson-gay-on-the-100-meter-world-record-race
#2
Frank Blikslager, Harjo J de Poel
In a recent observation article in Journal of Experimental Psychology: Human Perception and Performance (JEP:HPP; Varlet & Richardson, 2015) the 100-m sprint final of the World Championship in Athletics in Berlin of 2009 (i.e., the current world record race) was analyzed. That study reported occurrence of spontaneous, unintentional interpersonal synchronization between Usain Bolt and Tyson Gay, the respective winner and runner-up of that race. In the present commentary article, however, we argue that the results and conclusion of that study cannot be warranted because of methodological shortcomings...
July 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28631257/the-validity-and-responsiveness-of-isometric-lower-body-multi-joint-tests-of-muscular-strength-a-systematic-review
#3
REVIEW
David Drake, Rodney Kennedy, Eric Wallace
BACKGROUND: Researchers and practitioners working in sports medicine and science require valid tests to determine the effectiveness of interventions and enhance understanding of mechanisms underpinning adaptation. Such decision making is influenced by the supportive evidence describing the validity of tests within current research. The objective of this study is to review the validity of lower body isometric multi-joint tests ability to assess muscular strength and determine the current level of supporting evidence...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28627102/quantitation-of-%C3%AE-aminobutyric-acid-in-equine-plasma-by-hydrophilic-interaction-liquid-chromatography-with-tandem-mass-spectrometry
#4
Rong Yi, Sarah Zhao, Noel Kong, Julia Zhang, Devan Loganathan, Sandrine Mérette, Barbara Morrissey
γ-Aminobutyric acid is the principal inhibitory neurotransmitter in the central nervous system and regulates the neuronal excitability. There has been anecdotal evidence that γ-aminobutyric acid has been used within a few hours prior to competition in equine sports to calm down nervous horses. However, regulating the use of γ-aminobutyric acid is challenging because it is an endogenous substance in the horse. γ-Aminobutyric acid is usually present at low ng/mL levels in equine plasma; therefore, a sensitive method has to be developed to quantify these low background levels...
June 19, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28622751/clinical-prediction-models-for-patients-with-nontraumatic-knee-pain-in-primary-care-a-systematic-review-and-internal-validation-study
#5
Guus Panken, Arianne P Verhagen, Caroline B Terwee, Martijn W Heymans
Study Design A systematic review and validation study. Background Many prognostic models of knee pain outcomes have been developed for use in primary care. Variability among published studies with regard to patient population, outcome measures, and relevant prognostic factors hampers the generalizability and implementation of these models. Objectives To summarise existing prognostic models in patients with knee pain in a primary care setting and to develop and internally validate new summary prognostic model(s)...
June 16, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28615218/does-leisure-time-physical-activity-protect-against-low-back-pain-systematic-review-and-meta-analysis-of-36-prospective-cohort-studies
#6
REVIEW
Rahman Shiri, Kobra Falah-Hassani
BACKGROUND: There are plausible mechanisms whereby leisure time physical activity may protect against low back pain (LBP) but there have been no quality systematic reviews and meta-analyses of the subject. OBJECTIVE: This review aims to assess the effect of leisure time physical activity on non-specific LBP. METHODS: Literature searches were conducted in PubMed, Embase, Web of Science, Scopus and Google Scholar databases from their inception through July 2016...
June 14, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28591135/bioelectrical-impedance-vector-analysis-biva-for-measuring-the-hydration-status-in-young-elite-synchronized-swimmers
#7
Marta Carrasco-Marginet, Jorge Castizo-Olier, Lara Rodríguez-Zamora, Xavier Iglesias, Ferran A Rodríguez, Diego Chaverri, Daniel Brotons, Alfredo Irurtia
PURPOSE: The assessment of body hydration is a complex process, and no measurement is valid for all situations. Bioelectrical impedance vector analysis (BIVA) has emerged as a relatively novel technique for assessing hydration status in sports. We applied BIVA a) to determine hydration changes evoked by an intense synchronized swimming (SS) training session; b) to characterize the sample of young elite swimmers in relation with a nonathletic reference population; and c) to generate its 50%, 75% and 95% percentiles of the bioelectrical variables...
2017: PloS One
https://www.readbyqxmd.com/read/28582387/spanish-version-of-the-talent-development-environment-questionnaire-for-sport-cultural-adaptation-and-initial-validation
#8
Javier Brazo-Sayavera, Pedro R Olivares, Georgios Andronikos, Russell J J Martindale
This study aimed to translate the Talent Development Environment Questionnaire into Spanish and provide an initial validation. A recommended methodology for translation and cultural adaptation of questionnaires was applied. Once this had been completed, three hundred and thirty-two young athletes completed the Talent Development Environment Questionnaire. The results revealed that the five factor solution Talent Development Environment Questionnaire was confirmed. With the exclusion of one item due to low factor loading, the Talent Development Environment Questionnaire-5 had robust statistical support for its factor structure (χ2 (df = 305) = 499...
2017: PloS One
https://www.readbyqxmd.com/read/28577257/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
#9
REVIEW
Forough Farrokhyar, Gayathri Sivakumar, Katey Savage, Alex Koziarz, Sahab Jamshidi, Olufemi R Ayeni, Devin Peterson, Mohit Bhandari
BACKGROUND: 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 performance. OBJECTIVES: This systematic review of randomized controlled trials (RCTs) evaluated the effects of oral vitamin D supplementation on serum 25(OH)D concentrations and physical performance in athletes...
June 2, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28566342/predictors-of-clinical-recovery-from-concussion-a-systematic-review
#10
REVIEW
Grant L Iverson, Andrew J Gardner, Douglas P Terry, Jennie L Ponsford, Allen K Sills, Donna K Broshek, Gary S Solomon
OBJECTIVE: A systematic review of factors that might be associated with, or influence, clinical recovery from sport-related concussion. Clinical recovery was defined functionally as a return to normal activities, including school and sports, following injury. DESIGN: Systematic review. DATA SOURCES: PubMed, PsycINFO, MEDLINE, CINAHL, Cochrane Library, EMBASE, SPORTDiscus, Scopus and Web of Science. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Studies published by June of 2016 that addressed clinical recovery from concussion...
June 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28559868/individual-alpha-peak-frequency-in-ice-hockey-shooting-performance
#11
Sommer Christie, Selenia di Fronso, Maurizio Bertollo, Penny Werthner
There are several important inter- and intra-individual variations in individual alpha peak frequency (IAPF) in the cognitive domain. The rationale for the present study was to extend the research on IAPF in the cognitive domain to IAPF in the sport domain. Specifically, the purpose of the present study was twofold: (a) to explore whether baseline IAPF is related to performance in an ice hockey shooting task and (b) to explore whether a shooting task has an effect on IAPF variability. The present investigation is one of the first studies to examine links between IAPF and sport performance...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28558548/the-spanish-adaptation-of-the-sport-motivation-scale-ii-in-adolescent-athletes
#12
Jesús Viciana, Daniel Mayorga-Vega, Santiago Guijarro-Romero, Alejandro Martínez-Baena, Humberto Blanco
The aim of this study was to adapt and validate the Spanish version of the Sport Motivation Scale-II (S-SMS-II) in adolescent athletes. The sample included 766 Spanish adolescents (263 females and 503 males; average age = 13.71 ± 1.30 years old). The methodological steps established by the International Test Commission were followed. Four measurement models were compared employing the maximum likelihood estimation (with six, five, three, and two factors). Then, factorial invariance analyses were conducted and the effect sizes were calculated...
January 1, 2017: Psychological Reports
https://www.readbyqxmd.com/read/28556768/expert-users-perceptions-of-racing-wheelchair-design-and-setup-the-knowns-unknowns-and-next-steps
#13
Andrea Bundon, Barry S Mason, Victoria L Goosey-Tolfrey
This paper demonstrates how a qualitative methodology can be used to gain novel insights into the demands of wheelchair racing and the impact of particular racing chair configurations on optimal sport performance via engagement with expert users (wheelchair racers, coaches, and manufacturers). We specifically explore how expert users understand how wheels, tires, and bearings impact sport performance and how they engage, implement, or reject evidence-based research pertaining to these components. We identify areas where participants perceive there to be an immediate need for more research especially pertaining to the ability to make individualized recommendations for athletes...
April 2017: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/28541240/homosexuality-according-to-ancient-greek-physicians
#14
K Laios, M M Moschos, E Koukaki, M-I Kontaxaki, G Androutsos
Homosexuality and pedophilia in ancient Greece greatly concerned many researchers who were mainly interested in highlighting the social aspect of this phenomenon in ancient Greek society. An important source on the subject was the paintings of a man and his lover in attic black and red figured pottery, up to the end of the 5th century BC. Another main source was the information that derived from the texts of ancient Greek literature, especially poetry. Homosexuality was not only referring to relationships between males, but it was also manifested in lesbian love...
January 2017: Psychiatrikē, Psychiatriki
https://www.readbyqxmd.com/read/28515982/current-concepts-on-the-genetic-factors-in-rotator-cuff-pathology-and-future-implications-for-sports-physical-therapists
#15
Travis Orth, Jessica Paré, John E Froehlich
CONTEXT: Recent advances within the field of genetics are currently changing many of the methodologies in which medicine is practiced. These advances are also beginning to influence the manner in which physical therapy services are rendered. Rotator cuff pathology is one of the most common diagnoses treated by the sports physical therapist. The purpose of this commentary is to educate sports physical therapists on the recent advances regarding how genetics influences rotator cuff pathology, including rotator cuff tears, and provide a perspective on how this information will likely influence post-operative shoulder rehabilitation in the near future...
April 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28493245/-the-prognostic-significance-of-icf-data-with-regard-to-realization-of-recommendations-given-in-the-medical-discharge-report-after-in-patient-psychosomatic-rehabilitation
#16
Jörg Oster, Jörn von Wietersheim, Gottfried Müller, Carina Braunger
Target In this trial, the prognostic significance of ICF-related diagnostics compared to social and medical, disease-related and personal factors with regard to realization of recommendations given in the medical discharge report after the in-patient psychosomatic rehabilitation should be examined. Methodology ICF-related, social and medical, disease-related and personal prognostic factors were surveyed by questionnaires and interviews, on admission, discharge and 6 months after discharge from rehabilitation (time of catamnesis)...
May 2017: Psychotherapie, Psychosomatik, Medizinische Psychologie
https://www.readbyqxmd.com/read/28489656/consequences-of-traumatic-brain-injury-in-professional-american-football-players-a-systematic-review-of-the-literature
#17
Bodil C Vos, Karen Nieuwenhuijsen, Judith K Sluiter
OBJECTIVE: The purpose of this study was to systematically review the literature for the consequences Traumatic brain injury (TBI) has on cognitive, psychological, physical, and sports-related functioning in professional American Football players. DATA SOURCES: We performed a systematic search in 2 databases, PubMed and SPORTDiscus, to obtain literature from January 1990 to January 2015. To be eligible for inclusion, a study had to examine the relationship between TBI and the consequences for several aspects of functioning in professional American football players older than 18 years...
May 9, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28486363/effects-of-exercise-on-mild-to-moderate-depressive-symptoms-in-the-postpartum-period-a-meta-analysis
#18
Ashley P McCurdy, Normand G Boulé, Allison Sivak, Margie H Davenport
OBJECTIVE: To examine the influence of exercise on depressive symptoms and the prevalence of depression in the postpartum period. DATA SOURCES: A structured search of MEDLINE, EMBASE, CINAHL, Sport Discus, Ovid's All EBM Reviews, and ClinicalTrials.gov databases was performed with dates from the beginning of the databases until June 16, 2016. The search combined keywords and MeSH-like terms including, but not limited to, "exercise," "postpartum," "depression," and "randomized controlled trial...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28481725/intra-rater-and-inter-rater-reliability-of-the-standardized-ultrasound-protocol-for-assessing-subacromial-structures
#19
Birgitte Hougs Kjær, Karen Ellegaard, Ina Wieland, Susan Warming, Birgit Juul-Kristensen
BACKGROUND: US-examinations related to shoulder impingement (SI) often vary due to methodological differences, examiner positions, transducers, and recording parameters. Reliable US protocols for examination of different structures related to shoulder impingement are therefore needed. OBJECTIVES: To investigate the intra- and inter-rater reliability of the existing ultrasound (US) examinations of the subacromial space, the subacromial-subdeltoid bursa, and the supraspinatus tendon...
May 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28479406/from-cookies-to-carrots-the-effect-of-inhibitory-control-training-on-children-s-snack-selections
#20
L Porter, C Bailey-Jones, G Priudokaite, S Allen, K Wood, K Stiles, O Parvin, M Javaid, F Verbruggen, N S Lawrence
Children consume too much sugar and not enough fruit and vegetables, increasing their risk of adverse health outcomes. Inhibitory control training (ICT) reduces children's and adults' intake of energy-dense foods in both laboratory and real-life settings. However, no studies have yet examined whether ICT can increase healthy food choice when energy-dense options are also available. We investigated whether a food-specific Go/No-Go task could influence the food choices of children aged 4-11, as measured by a hypothetical food choice task using healthy and unhealthy food images printed on cards...
May 4, 2017: Appetite
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