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Athlete, performance monitoring

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https://www.readbyqxmd.com/read/28105335/detection-of-stanozolol-in-the-urine-of-athletes-at-a-pg-level-the-possibility-of-passive-exposure
#1
Christina Tsitsimpikou, Konstantinos Tsarouhas, Demetrios A Spandidos, Aristides M Tsatsakis
Stanozolol is a synthetic heterocyclic steroid with anabolic and androgenic properties, which has been abused by several high-profile professional athletes. Stanozolol is also used in veterinary medicine to increase appetite, cause weight gain and treat certain types of anemia. The detection of stanozolol metabolites in human urine for doping control purposes depends on the analytical method applied. The most commonly applied methods in the World Anti-Doping Agency (WADA)-accredited doping control laboratories are gas chromatography/high-resolution mass spectrometry (GC/HRMS) or gas chromatography-mass spectrometry (GC/MS/MS)...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28095075/a-pilot-study-using-entropy-as-a-non-invasive-assessment-of-running
#2
Andrew M Murray, Joong Hyun Ryu, John Sproule, Anthony P Turner, Phil Graham-Smith, Marco Cardinale
PURPOSE: Running performance is influenced by the interaction of biomechanical and physiological factors. Miniaturised accelerometers worn by the athlete can be used to quantify mechanical aspects of running and be used as a non-invasive tool to assess training status and progression. The aim of this study was to define and validate a method to assess running regularity and allow the estimation of an individual's V̇O2 and/or blood lactate [La]b based on data collected with accelerometers and heart rate (HR)...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28095065/monitoring-fatigue-status-in-elite-team-sport-athletes-implications-for-practice
#3
Robin T Thorpe, Greg Atkinson, Barry Drust, Warren Gregson
The increase in competition demands in elite team sports over recent years has prompted much attention from researchers and practitioners into the monitoring of adaptation and fatigue in athletes. Monitoring of fatigue and gaining an understanding of athlete status may also provide insights and beneficial information pertaining to player availability, injury and illness risk. Traditional methods used to quantify recovery and fatigue in team sports such as maximal physical performance assessments may not be feasible in order to detect variations in fatigue status throughout competitive periods...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28081034/the-effects-of-the-removal-of-electronic-devices-for-48-hours-on-sleep-in-elite-judo-athletes
#4
Ian C Dunican, David T Martin, Shona L Halson, Reid Reale, Brian Dawson, John Caldwell, Maddison J Jones, Peter R Eastwood
OBJECTIVE: This study examined the effects of the removal of electronic devices (i.e., smartphones, etc.) for 48 hours on sleep quality and next-day athletic and cognitive performance in elite Judo athletes. PARTICIPANTS: Over 6 days and nights, 23 eliteAustralian Judo athletes were monitored while attending a camp at the Australian Institute of Sport (AIS). In 14 athletes all electronic devices were removed on days 3 & 4 (i.e. for 48 hours: the 'device-restricted group') while 9 were permitted to use their devices throughout the camp (the 'control group')...
January 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28065993/the-utility-of-the-king-devick-test-as-a-sideline-assessment-tool-for-sport-related-concussions-a-narrative-review
#5
Scott Howitt, Robert Brommer, Justin Fowler, Logan Gerwing, Julian Payne, Christopher DeGraauw
OBJECTIVE: The objective of this paper is to review existing literature surrounding the utility of the King-Devick test which is a commonly used sideline assessment tool for sport-related concussions. METHODS: A review of the literature was performed using MEDLINE, CINHAL, and SportDiscus databases. The search was performed from the beginning of the record through November 16(th), 2015. RESULTS: This search strategy yielded 27 articles from aforementioned databases...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28054910/examining-effects-of-physical-exertion-on-the-dynamic-visual-acuity-test-in-collegiate-athletes
#6
Jessie N Patterson, Anna M Murphy, Julie A Honaker
BACKGROUND: Acute symptoms of dizziness and/or imbalance commonly experienced in athletes postconcussion are speculated to arise from dysfunction at multiple levels (i.e., inner ear or central vestibular system) to appropriately integrate afferent sensory information. Disruption along any pathway of the balance system can result in symptoms of dizziness, decreased postural control function (vestibulospinal reflex), and reduced vestibulo-ocular reflex function. This may also lead to decreased gaze stability with movements of the head and may account for symptoms of blurred vision or diplopia reported in almost half of athletes sustaining a concussion...
January 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28051335/managing-the-training-load-in-adolescent-athletes
#7
Andrew Murray
While historically adolescents were removed from their parents to prepare to become warriors, this process repeats itself in modern times but with the outcome being athletic performance. This review considers the process of developing athletes and managing load against the backdrop of differing approaches of conserving and maximizing the talent available. It acknowledges the typical training 'dose' that adolescent athletes receive across a number of sports and the typical 'response' when it is excessive or not managed appropriately...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28032032/extrinsic-visual-feedback-and-additional-cognitive-physical-demands-affect-single-limb-balance-control-in-individuals-with-ankle-instability
#8
You-Jou Hung, Jacob Miller
AIM: To investigate the impact of extrinsic visual feedback and additional cognitive/physical demands on single-limb balance in individuals with ankle instability. METHODS: Sixteen subjects with ankle instability participated in the study. Ankle instability was identified using the Cumberland Ankle Instability Tool (CAIT). The subject's unstable ankle was examined using the Athletic Single Leg Stability Test of the Biodex Balance System with 4 different protocols: (1) default setting with extrinsic visual feedback from the monitor; (2) no extrinsic visual feedback; (3) no extrinsic visual feedback with cognitive demands; and (4) no extrinsic visual feedback with physical demands...
December 18, 2016: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28018192/differences-in-resting-state-functional-connectivity-between-young-adult-endurance-athletes-and-healthy-controls
#9
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/27997264/decrease-in-ionized-and-total-magnesium-blood-concentrations-in-endurance-athletes-following-an-exercise-bout-restores-within-hours-potential-consequences-for-monitoring-and-supplementation
#10
Rieneke Terink, Michael G J Balvers, Maria T Hopman, Renger F Witkamp, Marco Mensink, Jacqueline M T Klein Gunnewiek
Magnesium is essential for optimal sport performance, generating an interest to monitor its status in athletes. However, before measuring magnesium status in blood could become routine, more insight into its diurnal fluctuations and effects of exercise itself is necessary. Therefore, we measured the effect of an acute bout of exercise on ionized (iMg) and total plasma magnesium (tMg) in blood obtained from 18 healthy well-trained endurance athletes (age, 31.1 ± 8.1 yr.; VO2max, 50.9 ± 7.5 ml/kg/min) at multiple time points, and compared this with a resting situation...
December 20, 2016: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/27996918/tracking-u-s-professional-athletes-the-ethics-of-biometric-technologies
#11
Katrina Karkazis, Jennifer R Fishman
Professional sport in the United States has widely adopted biometric technologies, dramatically expanding the monitoring of players' biodata. These technologies have the potential to prevent injuries, improve performance, and extend athletes' careers; they also risk compromising players' privacy and autonomy, the confidentiality of their data, and their careers. The use of these technologies in professional sport and the consumer sector remains largely unregulated and unexamined. We seek to provide guidance for their adoption by examining five areas of concern: (1) validity and interpretation of data; (2) increased surveillance and threats to privacy; (3) risks to confidentiality and concerns regarding data security; (4) conflicts of interest; and (5) coercion...
January 2017: American Journal of Bioethics: AJOB
https://www.readbyqxmd.com/read/27996906/athletic-performance-monitoring-pseudo-science-and-metaphysics-meet-ethics
#12
Leslie A Saxon
No abstract text is available yet for this article.
January 2017: American Journal of Bioethics: AJOB
https://www.readbyqxmd.com/read/27991484/relationship-between-the-handball-specific-complex-test-and-intermittent-field-test-performance-in-elite-professional-handball-players
#13
René Schwesig, Souhail Hermassi, Birgit Hoffmeyer, Lars Irlenbusch, Georg Fieseler, Frank Noack, Karl S Delank, Tim J Gabbett, Mohamed S Chelly
BACKGROUND: We investigated the relationship between the handball complex-test (HBCT) and two selected field tests in elite handball players. METHODS: Twenty one handball players (age: 25.2 ± 5.1 years) from the First Professional German League completed; the HBCT performed twice, total distance (TD) covered in the Yo-Yo Intermittent Recovery Test and repeated shuttle sprint ability (RSA) (6 x (15 + 15 m)) starting every 20 s. RSA results were evaluated in three ways: best time (RSAbest), total time (RSATT) and decrement (RSAdec)...
December 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27967289/red-amber-or-green-athlete-monitoring-in-team-sport-the-need-for-decision-support-systems
#14
Samuel Robertson, Jonathan D Bartlett, Paul B Gastin
Decision support systems are used in team sport for a variety of purposes including evaluating individual performance and informing athlete selection. A particularly common form of decision support is the traffic light system, where colour coding is used to indicate a given status of an athlete with respect to performance or training availability. However despite relatively widespread use, there remains a lack of standardisation with respect to how traffic light systems are operationalised. This paper addresses a range of pertinent issues for practitioners relating to the practice of traffic light monitoring in team sports...
December 14, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27967274/a-new-method-to-individualize-monitoring-of-muscle-recovery-in-athletes
#15
Anne Hecksteden, Werner Pitsch, Ross Julian, Mark Pfeiffer, Michael Kellmann, Alexander Ferrauti, Tim Meyer
PURPOSE: Assessment of muscle recovery is essential for the daily fine-tuning of training load in competitive sports, but individual differences may limit the diagnostic accuracy of group-based reference ranges. We report an attempt to develop individualized reference ranges using a Bayesian approach comparable to that developed for the athlete biological passport. METHODS: Urea and creatine kinase (CK) were selected as indicators of muscle recovery. For each parameter, prior distributions and repeated measures standard deviations were characterized based on data of 883 squad athletes (1758 data points, 1-8 per athlete, years 2013-2015)...
December 14, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27959833/adaptive-spectro-temporal-filtering-for-electrocardiogram-signal-enhancement
#16
Diana Tobon Vallejo, Tiago Falk
Advances in low-cost portable electrocardiogram (ECG) devices have opened doors for numerous new applications, including fitness tracking, remote health, and peak athletic performance monitoring, to name a few. Many such devices, however, have been shown to be highly contaminated by movement and/or muscle contraction artifacts, which in turn, can lead to erroneous heart rate and heart rate variability (HRV) analyses. Here, we propose a new denoising method based on adaptive spectrotemporal filtering for ECG enhancement...
December 9, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27941237/disentangling-the-health-benefits-of-walking-from-increased-exposure-to-falls-in-older-people-using-remote-gait-monitoring-and-multi-dimensional-analysis
#17
Matthew A Brodie, Yoshiro Okubo, Janneke Annegarn, Rainer Wieching, Stephen R Lord, Kim Delbaere
Falls and physical deconditioning are two major health problems for older people. Recent advances in remote physiological monitoring provide new opportunities to investigate why walking exercise, with its many health benefits, can both increase and decrease fall rates in older people. In this paper we combine remote wearable device monitoring of daily gait with non-linear multi-dimensional pattern recognition analysis; to disentangle the complex associations between walking, health and fall rates. One week of activities of daily living (ADL) were recorded with a wearable device in 96 independent living older people prior to completing 6 months of exergaming interventions...
January 2017: Physiological Measurement
https://www.readbyqxmd.com/read/27918666/quantification-of-training-and-competition-loads-in-endurance-sports-methods-and-applications
#18
Iñigo Mujika
Training quantification is basic to evaluate an endurance athlete's responses to the training loads, ensure adequate stress/recovery balance and determine the relationship between training and performance. Quantifying both external and internal workload is important, because the external workload does not measure the biological stress imposed by the exercise sessions. Generally used quantification methods include retrospective questionnaires, diaries, direct observation and physiological monitoring, often based on the measurement of oxygen uptake, heart rate and blood lactate concentration...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918664/modern-techniques-and-technologies-applied-to-training-and-performance-monitoring
#19
William A Sands, Ashley A Kavanaugh, Steven R Murray, Jeni R McNeal, Monèm Jemni
Athlete preparation and performance continues to increase in complexity and costs. Modern coaches are shifting from reliance on personal memory, experience, and opinion to evidence from collected training load data. Training load monitoring may hold vital information for developing systems of monitoring that follow the training process with such precision that both performance prediction and day-to-day management of training become an adjunct to preparation and performance. Time series data collection and analyses in sport are still in their infancy with considerable efforts being applied in "big-data" analytics and models of the appropriate variables to monitor and methods for doing so...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27909408/reliability-validity-and-usefulness-of-30-15-intermittent-fitness-test-in-female-soccer-players
#20
Nedim Čović, Eldin Jelešković, Haris Alić, Izet Rađo, Erduan Kafedžić, Goran Sporiš, Daniel T McMaster, Zoran Milanović
PURPOSE: The aim of this study was to examine the reliability, validity and usefulness of the 30-15IFT in competitive female soccer players. METHODS: Seventeen elite female soccer players participated in the study. A within subject test-retest study design was utilized to assess the reliability of the 30-15 intermittent fitness test (IFT). Seven days prior to 30-15IFT, subjects performed a continuous aerobic running test (CT) under laboratory conditions to assess the criterion validity of the 30-15IFT. End running velocity (VCT and VIFT), peak heart rate (HRpeak) and maximal oxygen consumption (VO2max) were collected and/or estimated for both tests...
2016: Frontiers in Physiology
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