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Monitoring, athlete, recovery, performance

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https://www.readbyqxmd.com/read/29345524/recovery-and-performance-in-sport-consensus-statement
#1
Michael Kellmann, Maurizio Bertollo, Laurent Bosquet, Michel Brink, Aaron Coutts, Rob Duffield, Daniel Erlacher, Shona Halson, Anne Hecksteden, Jahan Heidari, Romain Meeusen, Iñigo Mujika, Claudio Robazza, Sabrina Skorski, Ranel Venter, Jürgen Beckmann
The relationship between recovery and fatigue and its impact on performance has attracted the interest of sports science for many years. An adequate balance between stress (training and competition load, other life demands) and recovery is essential for athletes to achieve continuous high-level performance. Research has focused on the examination of physiological and psychological recovery strategies to compensate external and internal training and competition loads. A systematic monitoring of recovery and the subsequent implementation of recovery routines aims at maximizing performance and preventing negative developments such as underrecovery, non-functional overreaching, the overtraining syndrome, injuries, or illnesses...
January 18, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29325894/reference-values-for-the-creatine-kinase-response-to-professional-australian-football-match-play
#2
Luke A G Inman, Michael J Rennie, Mark L Watsford, Nathan J Gibbs, James Green, Robert W Spurrs
OBJECTIVES: Due to the importance of monitoring markers of muscle damage in high-level sport from a medical and athlete recovery perspective, this study aimed to determine the upper limits of normal (ULN) for post-match plasma creatine kinase (CK) in professional Australian footballers. Raw CK values were considered, along with intra-individual deviations from the season-mean. DESIGN: Case series. METHODS: CK was collected between 36-48h following professional Australian football match-play...
December 30, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29259810/capturing-effort-and-recovery-reactive-and-recuperative-cortisol-responses-to-competition-in-well-trained-rowers
#3
Victor L Kallen, Janine H Stubbe, Henk Jan Zwolle, Pierre Valk
Background/aim: It is well known that physical strain is associated with increased cortisol production. And although mental stress elevates cortisol concentrations as well, little is known of the independent and/or combined effects of both on the secretion of cortisol. Aim of the study was to investigate the day-to-day cortisol dynamics associated with training, performance and recuperation and the immediate responses to mental stress and physical endurance under competitive conditions...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29194183/hyperactivity-of-the-sympatho-adrenomedullary-system-without-any-modification-of-the-hypothalamic-pituitary-adrenal-axis-following-food-restriction-among-high-level-weightlifters
#4
Alexandre Durguerian, Edith Filaire, Catherine Drogou, Fabien Sauvet, Clément Bougard, Mounir Chennaoui
We examined the effects of six days of food restriction on salivary α-amylase (sAA), cortisol and dehydroepiandrostenedione (DHEA) awakening responses, psychological parameters and performance among eleven international weightlifters. Assessments were made at baseline (T1) and 6 days after a normal period of training while maintaining body weight (T2). Then, participants were assigned into two groups depending on whether they lost (Diet group) or maintained (Control group) their body weight. Anthropometric, psychological, physical and physiological assessments were also realized 6 days (T3) following the restricted dietary period for the Diet group...
November 29, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29189585/muscle-damage-and-metabolic-responses-to-repeated-sprint-running-with-and-without-deceleration
#5
Clare L Minahan, Daniel P Poke, Jaime Morrison, Phillip M Bellinger
This study aimed to determine whether repeated-sprint running with deceleration aggravates markers of muscle damage or delays the recovery of performance compared to repeated-sprint running without deceleration. Fourteen male team-sport athletes performed two randomly ordered testing sessions on a non-motorised treadmill with one session requiring participants to decelerate (TMd) within 4 s before stopping, or immediately step to the side of the treadmill belt at the completion of each sprint (TMa). Peak and mean velocities, speed decrement, blood lactate concentrations and oxygen uptake were monitored during the repeated-sprint running protocols...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29154694/gait-and-quiet-stance-performance-among-adolescents-after-concussion-symptom-resolution
#6
Justin Berkner, William P Meehan, Christina L Master, David R Howell
OBJECTIVE:   To prospectively examine adolescent athletes' gait and quiet-stance performance while concurrently completing a cognitive task acutely after concussion and after symptom resolution. SETTING:   Sport concussion clinic. DESIGN:   Participants diagnosed with a concussion completed a symptom inventory and single- and dual-task quiet-stance and gait evaluations within 21 days of injury and then again after symptom resolution...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29140183/full-title-examining-the-presence-of-back-pain-in-competitive-athletes-a-focus-on-stress-and-recovery
#7
Jahan Heidari, Johanna Belz, Monika Hasenbring, Jens Kleinert, Claudia Levenig, Michael Kellmann
Context - Explanatory approaches for back pain (BP) in athletes focus on biomechanical factors while neglecting psychological perspectives. Psychological factors have gained importance in the prediction of injuries in athletes and BP in the general population, with stress and recovery emerging as central risk factors. However, scarce evidence exists regarding the role of these aspects for the prevalent burden of back pain (BP). Objective - To investigate the association between stress and recovery parameters and the presence of BP...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29135639/sleep-and-athletic-performance
#8
Andrew M Watson
Sleep is an essential component of health and well-being, with significant impacts on physical development, emotional regulation, cognitive performance, and quality of life. Along with being an integral part of the recovery and adaptive process between bouts of exercise, accumulating evidence suggests that increased sleep duration and improved sleep quality in athletes are associated with improved performance and competitive success. In addition, better sleep may reduce the risk of both injury and illness in athletes, not only optimizing health but also potentially enhancing performance through increased participation in training...
November 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29072537/sleep-training-load-and-performance-in-elite-female-gymnasts
#9
J Dumortier, A Mariman, J Boone, L Delesie, E Tobback, D Vogelaers, J G Bourgois
Training load (TL) and recovery should be in optimal balance to obtain maximal performance gains. We aimed to study sleep as a recovery technique and its relationship with TL and performance in elite athletes. Twenty-six elite female artistic gymnasts were divided into an under 13 (n = 6), an under 14 (n = 6), a junior (n = 7; 14-15y) and a senior (=World Championship (WC) competitors, n = 7; ≥16y) category. Sleep, through sleep logs, and training parameters, using the session Rate of Perceived Exertion (sRPE) scale, were monitored to calculate total sleep time (TST), sleep efficiency (SE), TL, monotony and strain...
October 26, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28993881/maximal-rate-of-heart-rate-increase-correlates-with-fatigue-recovery-status-in-female-cyclists
#10
Maximillian J Nelson, Clint R Bellenger, Rebecca L Thomson, Eileen Y Robertson, Kade Davison, Daniela Schäfer Olstad, Jonathan D Buckley
PURPOSE: Being able to identify how an athlete is responding to training would be useful to optimise adaptation and performance. The maximal rate of heart rate increase (rHRI), a marker of heart rate acceleration has been shown to correlate with performance changes in response to changes in training load in male athletes; however, it has not been established if it also correlates with performance changes in female athletes. METHODS: rHRI and cycling performance were assessed in six female cyclists following 7 days of light training (LT), 14 days of heavy training (HT) and a 10 day taper period...
December 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28829368/an-acute-dose-of-specific-grape-and-apple-polyphenols-improves-endurance-performance-a-randomized-crossover-double-blind-versus-placebo-controlled-study
#11
Gaëlle Deley, Damien Guillemet, François-André Allaert, Nicolas Babault
Polyphenols are thought to be an interesting ergogenic aid for exercise and recovery. However, most studies regarding the effects of polyphenols investigated several days of supplementations. The present work aimed to study the effects of an acute intake of grape and apple polyphenols on the capacity to maintain intense exercise, here named endurance performance. Forty-eight physically active men (31 ± 6 years) were included in this study. During the two testing sessions, volunteers completed an endurance test at a high percentage of their maximal aerobic power and time to exhaustion was measured...
August 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28737585/biomarkers-in-sports-and-exercise-tracking-health-performance-and-recovery-in-athletes
#12
Elaine C Lee, Maren S Fragala, Stavros A Kavouras, Robin M Queen, John Luke Pryor, Douglas J Casa
Biomarker discovery and validation is a critical aim of the medical and scientific community. Research into exercise and diet-related biomarkers aims to improve health, performance, and recovery in military personnel, athletes, and lay persons. Exercise physiology research has identified individual biomarkers for assessing health, performance, and recovery during exercise training. However, there are few recommendations for biomarker panels for tracking changes in individuals participating in physical activity and exercise training programs...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28722468/evaluating-the-recovery-curve-for-clinically-assessed-reaction-time-after-concussion
#13
Gianluca Del Rossi
CONTEXT:   A change in reaction time is one of various clinical measures of neurocognitive function that can be monitored after concussion and has been reported to be among the most sensitive indicators of cognitive impairment. OBJECTIVE:   To determine the timeline for clinically assessed simple reaction time to return to baseline after a concussion in high school athletes. DESIGN:   Observational study. SETTING:   Athletic training room...
August 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28674597/sleep-hygiene-education-improves-sleep-indices-in-elite-female-athletes
#14
Shannon O'Donnell, Matthew W Driller
The importance of sleep in providing psychophysiological recovery in elite athletes is often overlooked. In other populations (eg shift workers and adolescent students), sleep hygiene education may serve to acutely improve sleep indices. However, this is yet to be examined in an elite athlete setting. Therefore, the aim of the current study was to evaluate the effect of a sleep hygiene education session on sleep indices in elite athletes. The study involved 26 elite female netball athletes performing one week of baseline sleep monitoring (PRE), followed by a sleep hygiene education session and a further week of sleep monitoring (POST) in a single group, pre- post design...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28670284/tensiomyographic-markers-are-not-sensitive-for-monitoring-muscle-fatigue-in-elite-youth-athletes-a-pilot-study
#15
Thimo Wiewelhove, Christian Raeder, Rauno Alvaro de Paula Simola, Christoph Schneider, Alexander Döweling, Alexander Ferrauti
Objective: Tensiomyography (TMG) is an indirect measure of a muscle's contractile properties and has the potential as a technique for detecting exercise-induced skeletal muscle fatigue. Therefore, the aim of this study was to assess the sensitivity of tensiomyographic markers to identify reduced muscular performance in elite youth athletes. Methods: Fourteen male junior tennis players (age: 14.9 ± 1.2 years) with an international (International Tennis Federation) ranking position participated in this pre-post single group trial...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28658076/recovery-time-profiling-after-short-middle-and-long-distance-swimming-performance
#16
Alessandro Piras, Matteo Cortesi, Francesco Campa, Monica Perazzolo, Giorgio Gatta
We investigated cardiac autonomic responses and hemodynamic parameters on recovery time following short-, middle- and long-swimming performance. Ten male regional-level swimmers were tested to estimate time and frequency domains of arterial baroreflex sensitivity and heart rate variability after 100-, 200-, and 400-m of front crawl. We found a BRS reduction for 90 min after a maximal 100- and 200-m front crawl event, meanwhile the reflex was restored back to the baseline value about 70 min after 400-m. The vagally mediated HF power of R-R intervals was significantly reduced for 30 min after 400-m, and more than 90 min after 100- and 200-m, with a concomitant increase of sympathetic modulation...
June 22, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28639438/body-composition-analysis-to-study-long-term-training-effects-in-elite-male-water-polo-athletes
#17
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/28597622/the-effect-of-training-load-on-neuromuscular-performance-muscle-soreness-and-wellness-during-an-in-season-non-competitive-week-in-elite-rugby-athletes
#18
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/28480685/hormonal-responses-to-a-rugby-match-a-brief-review
#19
Maamer Slimani, Foued Cheour, Wassim Moalla, Julien S Baker
BACKGROUND: Rugby is an intermittent team sport, commonly stressing the endocrine system by physiological efforts. However, no review has synthesized the available literature on the hormonal responses to a rugby match. The purpose of this review was to examine the hormonal responses to a rugby match. Mediator and moderator variables for the rugby match- hormonal responses relationship were also discussed. METHODS: The systematic search was conducted using different databases and according to the Population/Intervention or Exposure/Comparison/Outcome(s) [PICO] criteria...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28332113/the-critical-power-concept-applications-to-sports-performance-with-a-focus-on-intermittent-high-intensity-exercise
#20
REVIEW
Andrew M Jones, Anni Vanhatalo
The curvilinear relationship between power output and the time for which it can be sustained is a fundamental and well-known feature of high-intensity exercise performance. This relationship 'levels off' at a 'critical power' (CP) that separates power outputs that can be sustained with stable values of, for example, muscle phosphocreatine, blood lactate, and pulmonary oxygen uptake ([Formula: see text]), from power outputs where these variables change continuously with time until their respective minimum and maximum values are reached and exercise intolerance occurs...
March 2017: Sports Medicine
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