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Monitoring training load

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https://www.readbyqxmd.com/read/27930446/prediction-of-overuse-injuries-in-professional-u18-u21-footballers-using-metrics-of-training-distance-and-intensity
#1
Christopher S Bacon, Alexis R Mauger
The most common injury in professional football is an overuse injury to the lower limb. A significant external risk factor of this injury is the mismanagement of training and match loads. The aim of the current study was to examine the predictability of overuse injuries in professional youth soccer players using volume and intensity variables derived from Global Positioning Systems (GPS). A total of 41 players (Age - 17.8 yrs±1.1 yrs) training and match loads were assessed. These external loads were measured over two competitive seasons for every training session and match for each individual...
November 19, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27928203/accelerometer-load-profiles-for-basketball-specific-drills-in-elite-players
#2
Xavi Schelling, Lorena Torres
The purpose of this study was to quantify the workload during basketball-specific drills measured through microtechnology. Twelve professional male basketball players from the Spanish 1(st) Division were monitored over a 4-week period. Data were collected from 16 sessions, for a total of 95 ± 33 drills per player. Workload data (Acceleration load; AL) were obtained from a tri-axial accelerometer at 100Hz sampling frequency, and were expressed over time (AL(.)min(-1)). Comparisons among training drills (i.e...
December 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27919919/subjective-well-being-and-training-load-predict-in-season-injury-and-illness-risk-in-female-youth-soccer-players
#3
Andrew Watson, Stacey Brickson, Alison Brooks, Warren Dunn
BACKGROUND: The purpose of this study was to evaluate the effects of training load (TL) and well-being on injury and illness risk in youth soccer players. METHODS: Throughout a 20-week season, 75 female adolescent soccer players reported mood, fatigue, stress, soreness, sleep quality, sleep hours, TL, injuries and illnesses. Well-being measures were recorded from -3 (worst) to +3 (best). TL was expressed as daily, weekly and monthly, as well as an acute:chronic workload ratio (weekly divided by monthly)...
December 5, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27918673/predictive-indicators-of-overuse-injuries-in-adolescent-endurance-athletes
#4
Daniel Martínez-Silván, Jaime Díaz-Ocejo, Andrew Murray
PURPOSE: To analyse the influence of training exposure and the utility of self-report questionnaires on predicting overuse injuries in adolescent endurance athletes. METHODS: 5 adolescent male endurance athletes (15.7 ± 1.4 yr) from a full-time sports academy answered 2 questionnaires (Recovery Cue; RC-q & Oslo Sports Trauma Research questionnaire; OSTRC-q) on a weekly basis for one season (37 wks) in order to detect (1) signs of overtraining and under-recovery (RC-q) and (2) early symptoms of lower limb injuries (OSTRC-q)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918666/quantification-of-training-and-competition-loads-in-endurance-sports-methods-and-applications
#5
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/27918665/relationships-between-internal-and-external-match-load-indicators-in-soccer-match-officials
#6
Daniel Castillo, Matthew Weston, Shaun J McLaren, Jesús Cámara, Javier Yanci
The aims of this study were to describe the internal and external match load (ML) of refereeing activity during official matches and also to investigate the relationship among the methods of ML quantification across a competitive soccer season. A further aim was to examine the usefulness of differential perceived exertion (dRPE) as a tool for monitoring internal ML in soccer referees. Twenty field referees (FR) and 43 assistant referees (AR) participated in this study. Data were collected from 30 competitive matches (FR = 20 observations, AR = 43 observations) and included measures of internal (Edwards' heart rate derived training impulse [TRIMPEDW]), external (total distance covered [TD], distance covered at high speeds [HSR] and player load [PL]) ML, differentiated ratings of perceived respiratory [sRPEres ML] and leg muscle [sRPEmus ML] exertion)...
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
#7
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/27918659/importance-of-various-training-load-measures-on-injury-incidence-of-professional-rugby-league-athletes
#8
Heidi R Thornton, Jace A Delaney, Grant M Duthie, Ben J Dascombe
PURPOSE: To investigate the ability of various internal and external training load (TL) monitoring measures to predict injury incidence amongst positional groups within professional rugby league athletes. METHODS: TL and injury data were collected across 3 seasons (2013-2015) from twenty-five players competing in the National Rugby League competition. Daily TL data were included in the analysis, including session rating of perceived exertion (sRPE-TL), total distance (TD), high-speed running distance (HSD; >5m·s(-1)) and high-metabolic power distance (HPD; >20 W·kg(-1))...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27900186/injury-incidence-in-a-premier-league-youth-soccer-academy-using-the-consensus-statement-a-prospective-cohort-study
#9
Andrew Renshaw, Peter C Goodwin
BACKGROUND: There is an established risk of injury to young athletes exposed to high training loads. Identifying and monitoring injury risk is essential to aid prevention. The aim of this study was to use the consensus statement to determine the incidence and pattern of injury in 1 English Premier League soccer academy during 1 season. METHODS: A prospective cohort study included 181 elite academy soccer players during the 2012-2013 season. Players were divided into 5 age groups between 9 and 18 years...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27894154/perfusion-controlled-mobilization-after-lower-extremity-free-flaps-pushing-the-limits-of-time-and-intensity
#10
Ulf Dornseifer, Charlotte Kleeberger, Lukas Kargl, Markus Schönberger, Daniel Rohde, Milomir Ninkovic, Arndt Schilling
Background The current standard to gradually adapt the fragile perfusion in lower extremity free flaps to an upright posture is the dangling maneuver. This type of flap training neither fits the orthostatic target load of an upright posture, nor does it assist in mobilizing the patients effectively. In this study, we quantitatively analyzed training effects of an early and full mobilization on flap perfusion. Methods A total of 15 patients with gracilis flaps for distal lower extremity reconstruction were included...
November 28, 2016: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/27890138/individual-differences-in-cardiorespiratory-measures-of-mental-workload-an-investigation-of-negative-affectivity-and-cognitive-avoidant-coping-in-pilot-candidates
#11
Mariel Grassmann, Elke Vlemincx, Andreas von Leupoldt, Omer Van den Bergh
Cardiorespiratory measures provide useful information in addition to well-established self-report measures when monitoring operator capacity. The purpose of our study was to refine the assessment of operator load by considering individual differences in personality and their associations with cardiorespiratory activation. Physiological and self-report measures were analyzed in 115 pilot candidates at rest and while performing a multiple task covering perceptual speed, spatial orientation, and working memory...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27879382/veteran-preferences-regarding-wireless-management-of-positive-airway-pressure-for-obstructive-sleep-apnea-at-a-tertiary-health-care-system
#12
Ken He, Brian N Palen, Elizabeth A Mattox, Elizabeth C Parsons
BACKGROUND: Timely monitoring of obstructive sleep apnea (OSA) therapy can be a challenge amid conflicting pressures of rising patient volume and shortage of sleep medicine providers. Positive airway pressure (PAP) devices with wireless modem technology have the potential to improve patient access to care and streamline work load, yet little is known about patient attitudes toward telehealth integration among veterans with sleep apnea. As part of a larger quality improvement initiative at the Veterans Affairs (VA) Puget Sound Health Care System, we elicited veterans' preferences toward modem versus traditional PAP data download, including patient attitudes and factors affecting those preferences...
November 22, 2016: Respiratory Care
https://www.readbyqxmd.com/read/27875927/what-is-being-trained-how-divergent-forms-of-plasticity-compete-to-shape-locomotor-recovery-after-spinal-cord-injury
#13
J Russell Huie, Kazuhito Morioka, Jenny Haefeli, Adam R Ferguson
Spinal cord injury (SCI) is a devastating syndrome that produces dysfunction in motor and sensory systems, manifesting as chronic paralysis, sensory changes, and pain disorders. The multifaceted and heterogeneous nature of SCI has made effective rehabilitative strategies challenging. Work over the last 40 years has aimed to overcome these obstacles by harnessing the intrinsic plasticity of the spinal cord to improve functional locomotor recovery. Intensive training after SCI facilitates lower extremity function and has shown promise as a tool for retraining the spinal cord by engaging innate locomotor circuitry in the lumbar cord...
November 22, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27875498/a-murine-model-of-robotic-training-to-evaluate-skeletal-muscle-recovery-after-injury
#14
Stefano Lai, Alessandro Panarese, Ross Lawrence, Michael L Boninger, Silvestro Micera, Fabrisia Ambrosio
PURPOSE: In vivo studies have suggested that motor exercise can improve muscle regeneration after injury. Nevertheless, pre-clinical investigations still lack reliable tools to monitor motor performance over time and to deliver optimal training protocols to maximize force recovery. Here, we evaluated the utility of a murine robotic platform to (i) detect early impairment and longitudinal recovery after acute skeletal muscle injury and (ii) administer varying intensity training protocols to enhance forelimb motor performance...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27834559/wearable-training-monitoring-technology-applications-challenges-and-opportunities
#15
Marco Cardinale, Matthew C Varley
The need to quantify aspects of training in order to improve training prescription has been the holy grail of sport scientists and coaches for many years. Recently, there has been an increase in scientific interest, possibly due to technological advancements and better equipment to quantify training activities. Over the last few years there has been an increase in the number of studies assessing training load in various athletic cohorts with a bias towards subjective reports and/or quantifications of external load...
November 11, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27834554/subjective-fatigue-and-readiness-to-train-may-predict-functional-overreaching-after-only-3-days-of-cycling
#16
Twan Ten Haaf, Selma van Staveren, Erik Oudenhoven, Maria F Piacentini, Romain Meeusen, Bart Roelands, Leo Koenderman, Hein A M Daanen, Carl Foster, Jos J de Koning
PURPOSE: The aim of this study was to investigate whether monitoring of easily measurable stressors and symptoms can be used to early distinguish between acute fatigue (AF) and functional overreaching (FOR). METHODS: The study included 30 subjects (11 female/ 19 male, age: 40.8±10.8 y, VO2max: 51.8±6.3 ml/kg/min) who participated in an 8-day cycling event over 1,300 km with 18,500 climbing meters. Performance was measured before and after the event using a maximal incremental test...
November 11, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27834553/monitoring-what-matters-a-systematic-process-for-selecting-training-load-measures
#17
Sean Williams, Grant Trewartha, Matthew J Cross, Simon P T Kemp, Keith A Stokes
PURPOSE: Numerous derivative measures can be calculated from the simple session-Rating of Perceived Exertion (sRPE) tool for monitoring training loads (e.g., acute:chronic workload and cumulative loads). The challenge from a practitioner's perspective is to decide which measures they should calculate and monitor in their athletes for injury prevention purposes. The aim of the current study was to outline a systematic process of data reduction and variable selection for such training load measures...
November 11, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27834552/quantifying-training-loads-in-contemporary-dance
#18
Annie C Jeffries, Lee Wallace, Aaron J Coutts
PURPOSE: To describe the training demands of contemporary dance and determine the validity of using the session-RPE (sRPE) method to monitor exercise intensity and training load in this activity. In addition, we examined the contribution of training (i.e. accelerometry and heart rate) and non-training related factors (i.e. sleep and wellness) to perceived exertion during dance training. METHODS: Training load and actigraphy for sixteen elite amateur contemporary dancers were collected during a 49 day period, using heart rate monitors, accelerometry and sRPE...
November 11, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27803627/muscle-contraction-velocity-a-suitable-approach-to-analyze-the-functional-adaptations-in-elite-soccer-players
#19
Irineu Loturco, Lucas A Pereira, Ronaldo Kobal, Katia Kitamura, Rodrigo Ramírez-Campillo, Vinicius Zanetti, Cesar C Cal Abad, Fabio Y Nakamura
Tensiomyography (TMG) has been used as a simple and non-invasive tool to assess the mechanical properties of skeletal muscles. The TMG-derived velocity of contraction (Vc), which can be calculated from the ratio between maximal radial displacement and the sum of contraction time and delay time, has been proposed for evaluating athletes. However, its sensitivity to training effects and possible relation with changes in soccer players' neuromuscular performance have not yet been addressed. To test this possibility, twenty-two male Brazilian elite soccer players were assessed using TMG-derived Vc, unloaded squat jump, countermovement jump and drop jump at 45 cm, loaded jump squat and linear (20 m) and change of direction (COD) sprint tests, prior to and after an 8-week period, between two consecutive official tournaments, during which the concurrency between endurance and strength-power training commonly impairs neuromuscular capacities...
September 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27768512/heart-rate-variability-during-deep-sleep-offers-a-time-efficient-alternative-to-morning-supine-measurements-a-study-in-world-class-alpine-skiers
#20
David Herzig, Moreno Testorelli, Daniela Schäfer Olstad, Daniel Erlacher, Peter Achermann, Prisca Eser, Matthias Wilhelm
BACKGROUND/AIM: There is increasing popularity for athletes to use heart rate variability (HRV) to tailor training. A time-efficient method is HRV assessment during deep sleep. The aim was to validate the selection of deep sleep segments identified by RR-intervals with simultaneous electroencephalography (EEG) recordings and to compare HRV parameters of these segments with those of standard morning supine measurements. METHODS: In 11 world class alpine- skiers, RR-intervals were monitored during ten nights and simultaneous EEGs were recorded in 2-4 nights...
September 26, 2016: International Journal of Sports Physiology and Performance
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