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Monitoring training load

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https://www.readbyqxmd.com/read/28700511/quantifying-changes-in-squat-jump-height-across-a-season-of-men-s-collegiate-soccer
#1
Matt L Sams, Kimitake Sato, Brad H DeWeese, Adam L Sayers, Michael H Stone
The purposes of this study were to examine the effectiveness of an athlete monitoring program in managing athlete neuromuscular fatigue across a men's collegiate soccer season as measured by changes in squat jump (SJ) height and to compare possible changes with session rating of perceived exertion (sRPE) training load (TL). Eighteen outfield Division I men's college soccer players performed SJ testing prior to each game of the fall season in addition to a baseline measurement at the start of pre-season. The athletes provided sRPE values after all training sessions, weight training, and games...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28699924/position-specific-acceleration-and-deceleration-profiles-in-elite-youth-and-senior-soccer-players
#2
Jeppe F Vigh-Larsen, Ulrik Dalgas, Thomas B Andersen
The purpose of the study was to characterize and compare the position specific activity profiles of young and senior elite soccer players with special emphasis put on accelerations and decelerations. Eight professional senior matches were tracked using the ZXY tracking system and analyzed for number of accelerations and decelerations and running distances within different speed zones. Likewise, four U19- and five U17 matches were analyzed for comparison between youth and senior players. In senior players the total distance (TD) was 10776±107 m with 668±28 and 143±10 m being high-intensity running (HIR) and sprinting, respectively...
April 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28685557/the-use-of-chlorhexidine-in-mouthguards
#3
S D Ercole, M Tieri, D Fulco, D Martinelli, D Tripodi
Sports mouthguards have the potential to become a microbial reservoir, to produce oral and systemic diseases and cause changes in environmental oral factors, inhibiting the protective effect of saliva. The aim of this study was to monitor, in vivo, oral environmental changes caused by chlorhexidine and sports mouthguards and in vitro, the effects of microbial strains, saliva and chlorhexidine on Ethylene-Vinyl-Acetate (EVA) material. Seventy-two athletes were analyzed at different time points: before training session (T0), post-training (TA), post-training with mouthguard (TB), post-training with mouthguard and chlorhexidine (TC)...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28668619/internal-training-load-and-its-longitudinal-relationship-with-seasonal-player-wellness-in-elite-professional-soccer
#4
Filipe Manuel Clemente, Bruno Mendes, Pantelis Theodoros Nikolaidis, Francisco Calvete, Sandro Carriço, Adam Lee Owen
Monitoring internal training load has been extensively used and described within team sport environments, however when compared to internal physiological measures such as heart rate (HR) and rating of perceived exertion (RPE), the literature is sparse. The primary aim of this investigation study was to assess differences of playing position on ITL, session-RPE and wellness across two different training microcycles (1 vs. 2 competitive games), in addition with examining the relationship between ITL and Hooper's Index across an entire season...
June 28, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28663647/incidence-of-awareness-with-recall-under-general-anesthesia-in-rural-india-an-observational-study
#5
Deepak Singla, Mishu Mangla
CONTEXT: Awareness under anesthesia is a rare but extremely unpleasant phenomenon. There are very few studies in the developing world and none from rural areas where incidence of intraoperative awareness may be higher due to increased patient load, limited patient knowledge and lack of trained hospital staff, reliance on older, cheaper but less effective drugs, and lack of proper equipment both for providing anesthesia, as well as monitoring the patient. AIMS: To assess the incidence of intraoperative awareness during general anesthesia among patients in rural India and any factors associated with the same...
April 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28657854/differences-between-relative-and-absolute-speed-and-metabolic-thresholds-in-rugby-league
#6
Tannath J Scott, Heidi R Thornton, Macfarlane T U Scott, Ben J Dascombe, Grant M Duthie
PURPOSE: This study compared relative and absolute speed and metabolic thresholds for quantifying match output in elite rugby league. METHODS: Twenty-six professional players competing in the National Rugby League (NRL) were monitored with global positioning systems (GPS) across a rugby league season. Absolute speed [moderate-intensity running (MIRTh >3.6 m·s(-1)); high intensity running (HIRTh > 5.2 m·s(-1))] and metabolic (>20 W·kg(-1)) thresholds were compared to individualised ventilatory [first (VT1IFT), and second (VT2IFT)] thresholds estimated from the 30-15 intermittent fitness test (30-15IFT), as well as the metabolic threshold associated with VT2IFT (HPmetVT2), to examine difference in match-play demands...
June 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28657791/selective-changes-on-the-mechanical-capacities-of-lower-body-muscles-after-a-cycle-ergometer-sprint-training-against-heavy-and-light-resistances
#7
Amador García-Ramos, Alejandro Torrejón, Alejandro Pérez-Castilla, Antonio J Morales-Artacho, Slobodan Jaric
PURPOSE: This study explored the feasibility of the linear force-velocity (F-V) modelling approach to detect selective changes of the F-V parameters (i.e., maximum force [F0], maximum velocity [V0], F-V slope [a], and maximum power [P0]) following a sprint training program. METHODS: Twenty-seven men were randomly assigned to a heavy load group (HLG), light load group (LLG), or control group (CG). The training sessions (6 weeks × 2 sessions per week) comprised performing eight maximal effort sprints against either heavy (HLG) or light (LLG) resistances in the leg cycle ergometer exercise...
June 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28651061/modelling-of-optimal-training-load-patterns-during-the-11-weeks-preceding-major-competition-in-elite-swimmers
#8
Philippe Hellard, Charlotte Scordia, Marta Avalos, Inigo Mujika, David B Pyne
Periodization of swim training in the final training phases prior to competition and its effect on performance have been poorly described. PURPOSE: We modelled the relationships between the final 11 weeks of training and competition performance in 138 elite sprint, middle-distance and distance swimmers over 20 competitive seasons. METHODS: Total training load (TTL), strength training (ST), low-to medium and high-intensity training variables were monitored. Training loads were scaled as a percentage of the maximal volume measured at each intensity level...
June 26, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28647204/return-to-competition-after-an-achilles-tendon-rupture-using-both-on-and-off-the-field-load-monitoring-as-guidance-a-case-report-of-a-top-level-soccer-player
#9
Maurizio Fanchini, Franco M Impellizzeri, Karin Grävare Silbernagel, Franco Combi, Franco Benazzo, Mario Bizzini
OBJECTIVES: To describe the Return to competition after Achilles Tendon rupture (ATR) in an elite soccer player. DESIGN: Case report. SETTING: Return to sport (RTS) of a professional soccer player who suffered an ATR during a match. The RTS phase started 15 weeks after surgery and specific on-field activities were gradually introduced. Criteria used to monitor the transition through the different phases were strength and endurance of the calf muscle and ability to sustain specific on-field training loads (TL) monitored with Global Positioning System and heart-rate system...
April 29, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28639438/body-composition-analysis-to-study-long-term-training-effects-in-elite-male-water-polo-athletes
#10
Giovanni Melchiorri, Valerio Viero, Roberto Sorge, Tamara Triossi, Alessandro Campagna, Stella L Volpe, Dalgisio Lecis, Virginia Tancredi, Angela Andreoli
BACKGROUND: Elite water polo athletes undergo heavy training programs throughout the year, but especially to prepare major competitions, such as the Olympics. Optimal athletic performance is a result of many factors, including proper management of the intensity and volume of training, nutrition and recovery between training sessions. When training is excessive in relation to recovery may occur non functional overreaching (NFO). NFO can degenerate into overtraining syndrome (OTS) resulting in a decrease in athletic performance, with likely changes in body weight and body composition...
June 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28634456/absolute-and-relative-training-load-and-its-relation-to-fatigue-in-football
#11
Unai Zurutuza, Julen Castellano, Ibon Echeazarra, David Casamichana
The aim of the study was to assess the relationship of external and internal training load (TL) indicators with the objective and subjective fatigue experienced by 15 semi-professional football players, over eight complete weeks of the competition period in the 2015-2016 season, which covered microcycles from 34th to 41st. The maximum heart rate (HRmax) and maximum speed (Vmax) of all the players were previously measured in specific tests. The TL was monitored via questionnaires on rating of perceived exertion (RPE), pulsometers and GPS devices, registering the variables: total distance (TD), player load 2D (PL2D), TD at >80% of the Vmax (TD80), TD in deceleration at < -2 m⋅sec-2 (TDD <-2), TD in acceleration >2 m⋅sec(-2) (TDA >2), Edwards (ED), time spent at between 50 and 80% (50-80% HRmax), 80-90% (80-90% HRmax), and >90% of the HRmax (>90% HRmax), and RPE both respiratory/thoracic (RPEres) and leg/muscular (RPEmus)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28630575/acute-and-post-exercise-physiological-responses-to-high-intensity-interval-training-in-endurance-and-sprint-athletes
#12
Lukas Cipryan, Gerhard Tschakert, Peter Hofmann
The purpose of the presented study was to compare acute and post-exercise differences in cardiorespiratory, metabolic, cardiac autonomic, inflammatory and muscle damage responses to high-intensity interval exercise (HIIT) between endurance and sprint athletes. The study group consisted of sixteen highly-trained males (age 22.1 ± 2.5 years) participating in endurance (n = 8) or sprint (n = 8) sporting events. All the participants underwent three exercise sessions: short HIIT (work interval duration 30s), long HIIT (3min) and constant load exercise (CE)...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28618192/the-patient-buddy-app-can-potentially-prevent-hepatic-encephalopathy-related-readmissions
#13
Dinesh Ganapathy, Chathur Acharya, Jatinder Lachar, Kavish Patidar, Richard K Sterling, Melanie B White, Catherine Ignudo, Swamy Bommidi, John DeSoto, Leroy R Thacker, Scott Matherly, Jawaid Shaw, Mohammad S Siddiqui, Puneet Puri, Arun J Sanyal, Velimir Luketic, Hannah Lee, Richard T Stravitz, Jasmohan S Bajaj
BACKGROUND & AIMS: Readmissions are a major burden in cirrhosis. A proportion of readmissions in cirrhosis, especially because of hepatic encephalopathy (HE) could be avoided through patient and caregiver engagement. We aimed to define the feasibility of using the Patient Buddy App and its impact on 30-day readmissions by engaging and educating cirrhotic inpatients and caregivers in a pilot study. METHODS: Cirrhotic inpatients with caregivers were enrolled and followed for 30 days post-discharge...
June 15, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28614162/validity-of-heart-rate-based-indices-to-measure-training-load-and-intensity-in-elite-football-players
#14
Pedro Silva, Eduardo Dos Santos, Mikhail Grishin, José Mário Rocha
This study aimed to identify the most sensible heart rate-based indices to physical measures of training load and intensity. Twenty professional football players competing in the Russian league and in the UEFA Champions League were monitored during 15 training sessions (270 individual records) using GPS devices (10 Hz) and heart rate telemetry. Expert knowledge and a collinearity r < .5 were used initially to select the external physical markers for the final analysis. A multivariate-adjusted within-subjects model was employed to quantify the correlations between heart rate indices with various measures of training intensity and load...
June 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28597622/the-effect-of-training-load-on-neuromuscular-performance-muscle-soreness-and-wellness-during-an-in-season-non-competitive-week-in-elite-rugby-athletes
#15
Francisco Tavares, Phil Healey, Tiaki B Smith, Matthew Driller
BACKGROUND: In the elite Rugby setting, it is critical to understand the effects of training load on the levels of fatigue, soreness and readiness of the athletes. METHODS: The training load, wellness, neuromuscular markers of fatigue and various perceptual measures of soreness of 16 elite Rugby athletes were monitored during a training week. Training load was obtained for field training sessions, extra conditioning and gym-based sessions. Perceptual fatigue was obtained every morning from a 5-item wellness questionnaire and a questionnaire on the muscle soreness of 9 different muscle sites from each side of the body...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28597617/iron-monitoring-of-male-and-female-rugby-sevens-players-over-an-international-season
#16
Anthea C Clarke, Judith M Anson, Christine E Dziedzic, Warren A McDonald, David B Pyne
BACKGROUND: Given the likely influence that high training loads, contact-induced haemolysis and female-specific requirements have on the incidence of iron deficiency, characterising the direction and magnitude of fluctuations in iron status over an international season is important for managing player health and physical performance in rugby sevens. METHODS: Australian national male (n=27) and female (n=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28592547/performance-of-the-abbott-realtime-mtb-and-mtb-rif-inh-assays-in-a-high-tb-and-hiv-coinfection-setting-in-south-africa
#17
Lesley Scott, Anura David, Lara Noble, Matilda Nduna, Pedro Da Silva, Andrew Black, Francois Venter, Wendy Stevens
Background: South Africa is a country with a high incidence of tuberculosis (TB), complicated by coinfection with HIV. The Xpert MTB/RIF (Cepheid, Sunnyvale, CA, USA) is used in South Africa as the test for initial diagnosis of TB, and other molecular platforms such as the m2000 (Abbott Molecular, Des Plaines, IL, USA) are widely used for molecular monitoring of HIV viral load. This latter platform is now also equipped with the RealTime MTB and RealTime MTB RIF/INH assays for TB and first line drug resistance screening, but has not been evaluated in settings of HIV and TB coinfection...
June 7, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28570909/raman-spectral-characteristics-of-neck-and-head-of-femur-in-low-density-lipoprotein-receptor-gene-knockout-mice-submitted-to-treadmill-aerobic-training
#18
Gabriela Loiola Camargo, Renato Aparecido de Souza, Dênis Bueno da Silva, José Antônio Dias Garcia, Landulfo Silveira
Hypercholesterolemia is associated with deterioration of bone tissue. Trough Raman spectroscopy, the present study aimed to assess the molecular changes in terms of mineral and organic bone-tissue remodeling in low-density lipoprotein receptor gene knockout mice (LDLr-/-) submitted to treadmill aerobic training. In order to evaluate alterations in trabecular bone and cartilage surface, neck and head femoral were assessed into four groups: (CON, n=7), the 1) animals did not perform any physical activity and had hypercholesterolemia (CON, n=7); The trained groups where animals underwent a protocols of low, moderate and high training for 8weeks and 4 times per week on a treadmill with progressive intensities: running speed (8-13m/min) and time of exercise (20-60min)...
May 16, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28561899/a-big-data-analysis-approach-for-rail-failure-risk-assessment
#19
Ali Jamshidi, Shahrzad Faghih-Roohi, Siamak Hajizadeh, Alfredo Núñez, Robert Babuska, Rolf Dollevoet, Zili Li, Bart De Schutter
Railway infrastructure monitoring is a vital task to ensure rail transportation safety. A rail failure could result in not only a considerable impact on train delays and maintenance costs, but also on safety of passengers. In this article, the aim is to assess the risk of a rail failure by analyzing a type of rail surface defect called squats that are detected automatically among the huge number of records from video cameras. We propose an image processing approach for automatic detection of squats, especially severe types that are prone to rail breaks...
May 31, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28558654/a-pragmatic-multi-center-trial-of-goal-directed-fluid-management-based-on-pulse-pressure-variation-monitoring-during-high-risk-surgery
#20
Luiz Marcelo Sá Malbouisson, João Manoel Silva, Maria José Carvalho Carmona, Marcel Rezende Lopes, Murilo Santucci Assunção, Jorge Luís Dos Santos Valiatti, Claudia Marques Simões, José Otavio Costa Auler
BACKGROUND: Intraoperative fluid therapy guided by mechanical ventilation-induced pulse-pressure variation (PPV) may improve outcomes after major surgery. We tested this hypothesis in a multi-center study. METHODS: The patients were included in two periods: a first control period (control group; n = 147) in which intraoperative fluids were given according to clinical judgment. After a training period, intraoperative fluid management was titrated to maintain PPV < 10% in 109 surgical patients (PPV group)...
May 30, 2017: BMC Anesthesiology
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