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Stress and recovery, Athlete

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https://www.readbyqxmd.com/read/28630583/acute-modification-of-cardiac-autonomic-function-of-high-intensity-interval-training-in-collegiate-male-soccer-players-with-different-chronotype-a-cross-over-study
#1
Matteo Bonato, Luca Agnello, Letizia Galasso, Angela Montaruli, Eliana Roveda, Giampiero Merati, Antonio La Torre, Jacopo A Vitale
The purpose of this study was to evaluate if the time of the day (8.00 a.m. vs 8.00 p.m.) and chronotype could influence autonomic cardiac control in soccer players in relation to an acute session of high-intensity interval training. The morningness-eveningness questionnaire was administered to recruit Morning-type and Evening-type collegiate male soccer players. Therefore, 24 players (12 Morning-types and 12 Evening-types) were randomly assigned, to either morning (n = 12; age 23 ± 3 years; height 1.75 ± 0...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28597618/effects-of-resistance-training-overtraining-and-early-specialization-on-youth-athletes
#2
Benjamin K Walters, Connor R Read, A Reed Estes
INTRODUCTION: In 2014, 60 million youth ages 6-18 participated in some form of generalized athletics. 3.5 million children are injured annually participating in organized sport or recreational activities. While sound physical education can decrease the burden of youth sports injuries, the median annual physical education budget of $764 for United States elementary, middle and high schools may not allow enough flexibility to apply evidenced-based guidelines. EVIDENCE ACQUISITION: The topics were selected after a careful review of the 2016 National Strength and Conditioning Association Position Statement on Long-Term Athletic Development...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28538307/can-cold-water-immersion-enhance-recovery-in-elite-olympic-weightlifters-an-individualized-perspective
#3
Jan Schimpchen, Maximilian Wagner, Alexander Ferrauti, Michael Kellmann, Mark Pfeiffer, Tim Meyer
We investigated whether cold water immersion (CWI) after intensive training sessions can enhance recovery in elite Olympic weightlifters, taking into account each athlete's individual response pattern. The entire German male Olympic weightlifting national team participated in the study (n = 7), ensuring collection of data from elite athletes only. Using a randomized cross-over design, the athletes went through 2 high-intensity training microcycles consisting of 5 training sessions that were either followed by a CWI or passive recovery...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28524103/potential-impact-of-nutrition-on-immune-system-recovery-from-heavy-exertion-a-metabolomics-perspective
#4
REVIEW
David C Nieman, Susan Hazels Mitmesser
This review describes effective and ineffective immunonutrition support strategies for the athlete, with a focus on the benefits of carbohydrates and polyphenols as determined from metabolomics-based procedures. Athletes experience regular cycles of physiological stress accompanied by transient inflammation, oxidative stress, and immune perturbations, and there are increasing data indicating that these are sensitive to nutritional influences. The most effective nutritional countermeasures, especially when considered from a metabolomics perspective, include acute and chronic increases in dietary carbohydrate and polyphenols...
May 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28512432/whole-body-cryotherapy-in-athletes-from-therapy-to-stimulation-an-updated-review-of-the-literature
#5
REVIEW
Giovanni Lombardi, Ewa Ziemann, Giuseppe Banfi
Nowadays, whole-body cryotherapy is a medical physical treatment widely used in sports medicine. Recovery from injuries (e.g., trauma, overuse) and after-season recovery are the main purposes for application. However, the most recent studies confirmed the anti-inflammatory, anti-analgesic, and anti-oxidant effects of this therapy by highlighting the underlying physiological responses. In addition to its therapeutic effects, whole-body cryotherapy has been demonstrated to be a preventive strategy against the deleterious effects of exercise-induced inflammation and soreness...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28480685/hormonal-responses-to-a-rugby-match-a-brief-review
#6
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/28465675/dietary-thiols-in-exercise-oxidative-stress-defence-exercise-performance-and-adaptation
#7
REVIEW
Yanita McLeay, Stephen Stannard, Stuart Houltham, Carlene Starck
Endurance athletes are susceptible to cellular damage initiated by excessive levels of aerobic exercise-produced reactive oxygen species (ROS). Whilst ROS can contribute to the onset of fatigue, there is increasing evidence that they play a crucial role in exercise adaptations. The use of antioxidant supplements such as vitamin C and E in athletes is common; however, their ability to enhance performance and facilitate recovery is controversial, with many studies suggesting a blunting of training adaptations with supplementation...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28463598/development-of-two-short-measures-for-recovery-and-stress-in-sport
#8
Anu Nässi, Alexander Ferrauti, Tim Meyer, Mark Pfeiffer, Michael Kellmann
The Acute Recovery and Stress Scale (ARSS) and the Short Recovery and Stress Scale were first established in German for the purposes of monitoring athletes' current recovery-stress states in an economical and multidimensional manner. The aim of this paper is to document the development and initial validation of the English versions of these two psychometric monitoring tools. A total of 267 English-speaking athletes from a variety of team and individual sports participated in the study. The English versions demonstrated satisfactory internal consistency for both instruments (Cronbach α of ...
August 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28385561/a-multifactorial-evaluation-of-illness-risk-factors-in-athletes-preparing-for-the-summer-olympic-games
#9
Michael K Drew, Nicole Vlahovich, David Hughes, Renee Appaneal, Kirsten Peterson, Louise Burke, Bronwen Lundy, Mary Toomey, David Watts, Gregory Lovell, Stephan Praet, Shona Halson, Candice Colbey, Silvia Manzanero, Marijke Welvaert, Nic West, David B Pyne, Gordon Waddington
OBJECTIVES: Illness can disrupt training and competition performance of athletes. Few studies have quantified the relative contribution of the known medical, behavioural and lifestyle risk factors. DESIGN: Cross-sectional. METHODS: Olympic athletes from 11 sports (n=221) were invited to complete questionnaires administered nine months before the Rio 2016 Olympic Games. These included the Depression, Anxiety and Stress Questionnaire (DASS-21), Perceived Stress Scale (PSS), Dispositional Resilience Scale (DRS), Recovery-Stress Questionnaire (REST-Q-52 item), Low Energy in Females Questionnaire (LEAF-Q), a modified Personal and Household Hygiene questionnaire, Epworth Sleepiness Scale, Pittsburgh Sleep Quality Index, and custom-made questionnaires on probiotic usage and travel...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28361573/effects-of-time-of-day-on-oxidative-stress-cardiovascular-parameters-biochemical-markers-and-hormonal-response-following-level-1-yo-yo-intermittent-recovery-test
#10
RANDOMIZED CONTROLLED TRIAL
K Aloui, S Abedelmalek, H Chtourou, D P Wong, N Boussetta, N Souissi
The aim of this study was to investigate the effect of time-of-day on oxidative stress, cardiovascular parameters, muscle damage parameters, and hormonal responses following the level-1 Yo-Yo intermittent recovery test (YYIRT). A total of 11 healthy subjects performed an intermittent test (YYIRT) at two times-of-day (i.e., 07:00 h and 17:00 h), with a recovery period of ≥36 h in-between, in a randomized order. Blood samples were taken at the rest (baseline) and immediately (post-YYIRT) after the YYIRT for measuring oxidative stress, biochemical markers, and hormonal response...
March 1, 2017: Physiology International
https://www.readbyqxmd.com/read/28347463/level-of-minerals-and-trace-elements-in-the-urine-of-the-participants-of-mountain-ultra-marathon-race
#11
Jasna Jablan, Suzana Inić, Hagen Stosnach, Maja Ortner Hadžiabdić, Lovorka Vujić, Ana-Marija Domijan
The aim of the present study was to explore impact of endurance exercise on urinary level of minerals and trace elements as well as on some oxidative stress and biochemical parameters. Urine samples were collected from participants (n=21) of mountain ultra-marathon race (53km; Medvednica, Zagreb, Croatia), before (baseline value), immediately after, 12h and 24h after the race. In urine samples level of minerals (Ca, P, K and Na) and trace elements (Se, Zn, Mn, Cu, Fe and Co) were assessed using the bench top Total reflection X-ray Fluorescence (TXRF) spectrometer...
May 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28344454/the-effect-of-intermittent-head-cooling-on-aerobic-performance-in-the-heat
#12
Peter Walters, Nathaniel Thom, Kai Libby, Shelby Edgren, Amanda Azadian, Daniel Tannous, Elisabeth Sorenson, Brian Hunt
Thermoregulation is critical for athletes, particularly those for those who must perform in the heat. Most strategies aimed at reducing heat stress have cooled participants before or during activity. The objective of this study is to investigate whether seven minutes of head cooling applied between bouts of aerobic exercise in hot (35 ± 1.0 °C) and dry (14.68 ±4.29% rh) environmental conditions could positively effect participants peak power output (PP) on a maximal effort graded exercise test (GXT). Twenty-two recreational active men ages 18 to 23 (19...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28301436/the-effects-of-recovery-duration-during-high-intensity-interval-exercise-on-time-spent-at-high-rates-of-oxygen-consumption-oxygen-kinetics-and-blood-lactate
#13
Ilias Smilios, Aristides Myrkos, Andreas Zafeiridis, Argyris Toubekis, Apostolos Spassis, Savas P Tokmakidis
The recovery duration and the work to recovery ratio are important aspects to consider when designing a high-intensity aerobic interval exercise (HIIE). This study examined the effects of recovery duration on total exercise time performed above 80, 90 and 95% of maximum oxygen consumption (VO2max) and heart rate (HRmax) during a single-bout HIIE. We also evaluated the effects on VO2 and HR kinetics, blood lactate concentration and rating of perceived exertion (RPE). Eleven moderately trained males (22.1±1 yrs...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28290969/pubic-osteomyelitis-in-a-combat-training-soldier-a-case-report
#14
David Segal, Iris Eshed, Niv Marom, Georgiy Gurman, Jacopo Chen, Meir Nyska, Gideon Mann, Eyal Yaacobi
INTRODUCTION: Infectious osteomyelitis of the symphysis pubis, known as pubic osteomyelitis is a rare condition with potentially devastating consequences. To the best of our knowledge, this article is the first reported case of a military trainee presenting with pubic osteomyelitis. MATERIALS AND METHODS: We present a unique case of a patient who simultaneously suffered a combination of local recurrent stress to the symphysis pubis area, and slow-healing multiple palm and finger lacerations which probably acted as distant ports of bacterial entry that concomitantly led to his illness...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28203589/prevalence-of-vitamin-d-insufficiency-in-professional-hockey-players
#15
Nima Mehran, Brian M Schulz, Brian R Neri, William J Robertson, Orr Limpisvasti
BACKGROUND: Vitamin D is a fat-soluble hormone that plays a role in bone health, muscle function, and athletic performance. Studies have shown that low levels of vitamin D can lead to slower muscle recovery and function, increased rates of stress fractures, and even poorer athletic performance. Insufficient vitamin D levels have been demonstrated in professional basketball and football players, however, there have been no studies to date reviewing vitamin D insufficiency in professional hockey players...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28195970/reduction-of-physiological-strain-under-a-hot-and-humid-environment-by-a-hybrid-cooling-vest
#16
Albert P C Chan, Y Yang, Francis K W Wong, Michael C H Yam, Del P Wong, W F Song
Cooling treatment is regarded as one of good practices to provide safe training conditions to athletic trainers in the hot environment. The present study aimed to investigate whether wearing a commercial lightweight and portable hybrid cooling vest that combines air ventilation fans with frozen gel packs was an effective means to reduce participants' body heat strain. In this within-subject repeated measures study, 10 male volunteers participated in two heat-stress trials (one with the cooling vest - COOL condition, and another without - CON condition, in a randomized order) inside a climatic chamber with a controlled ambient temperature 33 °C and relative humidity (RH) 75% on an experimental day...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28177718/the-physiological-response-to-cold-water-immersion-following-a-mixed-martial-arts-training-session
#17
Angus Lindsay, Sam Carr, Sean Cross, Carl Petersen, John G Lewis, Steven P Gieseg
Combative sport is one of the most physically intense forms of exercise, yet the effect of recovery interventions has been largely unexplored. We investigated the effect of cold-water immersion on structural, inflammatory, and physiological stress biomarkers following a mixed martial arts (MMA) contest preparation training session in comparison with passive recovery. Semiprofessional MMA competitors (n = 15) were randomly assigned to a cold-water immersion (15 min at 10 °C) or passive recovery protocol (ambient air) completed immediately following a contest preparation training session...
May 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28167303/psychological-and-lifestyle-factors-that-influence-the-serial%C3%A2-reporting-of-postconcussion-like-symptoms-in-a-non-concussed-population
#18
Arun Prasad Balasundaram, Josie Athens, Anthony Gerard Schneiders, Paul McCrory, Stephen John Sullivan
BACKGROUND: Symptoms related to concussion are generally found to be nonspecific in nature, as they are also reported by non-concussed individuals. What is currently not known is whether the symptoms vary over time, and whether they are also influenced by a multitude of factors. OBJECTIVE: The aim of this study was to investigate the potential influence of psychological, lifestyle, and situational factors on the change in postconcussion-like symptoms reported over 7 consecutive days in a cohort of normal individuals...
February 4, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28153943/the-cardiovascular-system-after-exercise
#19
REVIEW
Steven A Romero, Christopher T Minson, John R Halliwill
Recovery from exercise refers to the time period between the end of a bout of exercise and the subsequent return to a resting or recovered state. It also refers to specific physiological processes or states occurring after exercise that are distinct from the physiology of either the exercising or the resting states. In this context, recovery of the cardiovascular system after exercise occurs across a period of minutes to hours, during which many characteristics of the system, even how it is controlled, change over time...
April 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28111441/exercise-induced-upregulation-of-glutamate-cysteine-ligase-catalytic-subunit-and-glutamate-cysteine-ligase-modifier-subunit-gene-expression-in-thoroughbred-horses
#20
Jeong-Woong Park, Jae-Young Choi, Seul A Hong, Nam Young Kim, Kyoung-Tag Do, Ki-Duk Song, Byung-Wook Cho
OBJECTIVE: This study was performed to reveal the molecular structure and expression patterns of horse glutamate-cysteine ligase catalytic subunit (GCLC) and glutamate-cysteine ligase modifier subunit (GCLM) genes whose products form glutamate cysteine ligase, which were identified as differentially expressed genes in the previous study. METHODS: We performed bioinformatics analyses, and gene expression assay with quantitative polymerase chain reaction (qPCR) for horse GCLC and GCLM genes in muscle and blood leukocytes of Thoroughbred horses...
May 2017: Asian-Australasian Journal of Animal Sciences
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