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Stress and recovery, Athlete

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https://www.readbyqxmd.com/read/27918666/quantification-of-training-and-competition-loads-in-endurance-sports-methods-and-applications
#1
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/27909225/recovery-of-the-immune-system-after-exercise
#2
Jonathan M Peake, Oliver Neubauer, Neil P Walsh, Richard J Simpson
The notion that prolonged, intense exercise causes an 'open window' of immunodepression during recovery after exercise is well accepted. Repeated exercise bouts or intensified training without sufficient recovery may increase the risk of illness. However, except for salivary IgA, clear and consistent markers of this immunodepression remain elusive. Exercise increases circulating neutrophil and monocyte counts, and reduces circulating lymphocyte count during recovery. This lymphopenia results from preferential egress of lymphocyte subtypes with potent effector functions (e...
December 1, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27904800/cervical-contribution-to-functional-shoulder-impingement-two-case-reports
#3
Steven Pheasant
BACKGROUND: Subacromial impingement is a common condition among overhead athletes. The cause of subacromial impingement can be multifactorial and often involves impaired rotator cuff function. CASE DESCRIPTION: The following cases outline the presentation, examination and intervention of two overhead athletes, a high school football quarterback and a collegiate swimmer, each presenting with signs and symptoms of subacromial impingement. The unique feature in each case was the manifestation of the cervical spine as the apparent source of rotator cuff weakness, which contributed to functional subacromial impingement although other overt signs of cervical or associated nerve root involvement were absent...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904716/is-anterior-bridge-plating-for-mid-shaft-humeral-fractures-a-suitable-option-for-patients-predominantly-involved-in-overhead-activities-a-functional-outcome-study-in-athletes-and-manual-laborers
#4
Abhishek S Mahajan, Young Gun Kim, Jae Hwa Kim, Prashanth D'sa, Azhar Lakhani, Hyun Soo Ok
BACKGROUND: To assess the functional and radiological outcomes of minimally invasive anterior bridge plating (ABP) for mid-shaft humerus fractures in patients predominantly involved in overhead activities (athletes and manual laborers). METHODS: Forty-eight patients fulfilling inclusion criteria were treated with ABP at a level-I trauma center using a 4.5-mm dynamic/locking compression plate and followed for a period of 1 year. Functional outcome was assessed using the Constant, Mayo elbow, and Disabilities of the Arm, Shoulder and Hand (DASH) scores...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27904629/effect-of-various-kinds-of-beverages-on-stress-oxidative-f2-isoprostane-serum-lipid-and-blood-glucose-of-elite-taekwondo-players
#5
Zahra Maghsoudi, Ashfin Shiranian, Gholamreza Askai, Reza Ghaisvand
BACKGROUND: Athletes' recovery is important in improving their performance. Nutritional strategies can be effective in enhancing recovery rate. Choosing the best food items in appropriate intervals can play effective roles in resynthesis of fuels and recovery of muscle injury. Beverage micro and macronutrient content are helpful in fuel restoration. In this study, we assess the effects of various kinds of beverages on oxidative stress, muscle injury, and metabolic risk factors in taekwondo players...
September 2016: Iranian Journal of Nursing and Midwifery Research
https://www.readbyqxmd.com/read/27895542/effect-of-tart-cherry-juice-on-recovery-and-next-day-performance-in-well-trained-water-polo-players
#6
Rachel McCormick, Peter Peeling, Martyn Binnie, Brian Dawson, Marc Sim
BACKGROUND: Tart Montmorency cherries contain high concentrations of phytochemicals and anthocyanins, which have recently been linked to improved athletic recovery and subsequent performance. To date however, previous work reporting promising results has focused on land-based endurance sports, with any potential benefits to team sports remaining unknown. As such, this investigation set-out to examine the effect of supplemental tart cherry juice (CJ) on recovery and next day athletic performance in highly-trained water-based team sport athletes over seven days...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27881668/restoration-of-thermoregulation-after-exercise
#7
Glen P Kenny, Ryan McGinn
Performing exercise, especially in the hot conditions, can heat the body causing significant increases in internal body temperature. To offset this increase, powerful and highly developed autonomic thermoregulatory responses (i.e., skin blood flow and sweating) are activated to enhance whole-body heat loss; a response mediated by temperature sensitive receptors in both the skin and the internal core regions of the body. Independent of thermal control of heat loss, nonthermal factors can have profound consequences on the body's ability to dissipate heat during exercise...
November 23, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27874264/photobiomodulation-in-human-muscle-tissue-an-advantage-in-sports-performance
#8
Cleber Ferraresi, Ying-Ying Huang, Michael R Hamblin
Photobiomodulation (PBM) describes the use of red or near-infrared (NIR) light to stimulate, heal, and regenerate damaged tissue. Both preconditioning (light delivered to muscles before exercise) and PBM applied after exercise can increase sports performance in athletes. This review covers the effects of PBM on human muscle tissue in clinical trials in volunteers related to sports performance and in athletes. The parameters used were categorized into those with positive effects or no effects on muscle performance and recovery...
November 22, 2016: Journal of Biophotonics
https://www.readbyqxmd.com/read/27852318/sacral-stress-fracture-in-an-amateur-rugby-player-a-case-report
#9
Yasuhiro Takahashi, Takashi Kobayashi, Naohisa Miyakoshi, Eiji Abe, Toshiki Abe, Kazuma Kikuchi, Yoichi Shimada
BACKGROUND: Sacral stress fracture is an uncommon cause of back pain. The majority of previously reported cases have been in runners. The purpose of this case report was to describe a case of sacral stress fracture in an amateur rugby player. CASE PRESENTATION: A healthy 18-year-old Japanese boy who was a rugby player presented with a 3-week history of lumbago. Sagittal and axial magnetic resonance imaging failed to reveal any reason for lumbago in his lumbar region...
November 16, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27815238/strategies-and-factors-associated-with-preparing-for-competing-in-the-heat-a-cohort-study-at-the-2015-iaaf-world-athletics-championships
#10
Julien D Périard, Sébastien Racinais, Toomas Timpka, Örjan Dahlström, Armin Spreco, Jenny Jacobsson, Victor Bargoria, Karin Halje, Juan-Manuel Alonso
PURPOSE: Assess exertional heat illness (EHI) history and preparedness in athletes competing in a World Athletics Championships under hot/humid conditions and identify the factors associated with preparedness strategies. METHODS: Of the 207 registered national teams invited to participate in the study, 50 (24%) accepted. The 957 athletes (49% of all 1965 registered) in these teams were invited to complete a precompetition questionnaire evaluating EHI history, heat stress prevention (heat acclimatisation, precooling and hydration) and recovery...
November 4, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27787466/relationship-between-running-performance-and-recovery-stress-state-in-collegiate-soccer-players
#11
Nicholas A Coker, Klarie M Ake, David L Griffin, Stephen J Rossi, Jim L McMillan, Adam J Wells
The purpose of this study was to evaluate the relationship between changes in running performance and the stress-recovery state in collegiate soccer players. Running performance was evaluated in seven Division I NCAA male soccer players (179.39±5.24 cm; 75.46±5.98 kg; 20.37±1.41 yrs.) via global positioning system over the course of 12 competitive games in a single season. The regular season was divided into four competitive blocks: B1 (n=3), B2 (n=3), B3 (n=3) and B4 (n=3). Total distance and distance covered while engaging in walking, jogging, low-speed running, high-speed running, sprinting, low-intensity running and high-intensity running were assessed during each block...
October 17, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27761664/increasing-performance-of-professional-soccer-players-and-elite-track-and-field-athletes-with-peak-performance-training-and-biofeedback-a-pilot-study
#12
Noortje H Rijken, Remko Soer, Ewold de Maar, Hilco Prins, Wouter B Teeuw, Jan Peuscher, Frits G J Oosterveld
The aim of this pilot study was to investigate the effects of an intervention consisting of mental coaching combined with either electro encephalogram (EEG) alpha power feedback or heart rate variability (HRV) feedback on HRV, EEG outcomes and self-reported factors related to stress, performance, recovery and sleep quality in elite athletes. A prospective pilot study was performed with two distinct cohorts. Soccer players were provided with four sessions of mental coaching combined with daily HRV biofeedback (Group A); track and field athletes were provided with four sessions of mental coaching in combination with daily neurofeedback (Group B)...
December 2016: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/27736255/assessing-the-measurement-sensitivity-and-diagnostic-characteristics-of-athlete-monitoring-tools-in-national-swimmers
#13
Stephen Crowcroft, Erin McCleave, Katie Slattery, Aaron J Coutts
PURPOSE: To assess measurement sensitivity and diagnostic characteristics of athlete monitoring tools to identify performance change. METHODS: Fourteen nationally competitive swimmers (11 males, 3 females, age: 21.2 ± 3.2 y) recorded daily monitoring over 15 months. The "Self-report" group (n=7) reported general health, energy levels, motivation, stress, recovery, soreness and wellness. The "Combined" group (n=7) recorded sleep quality, perceived fatigue, total quality recovery (TQR) and heart rate variability measures...
October 13, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27686114/working-with-sports-organizations-and-teams
#14
David R McDuff, Michelle Garvin
Athletes and coaches at all competitive levels will utilize sports performance and psychiatric services at very high rates if the services are offered on-site and free of charge and are broad in scope and culturally sensitive. Services should be available throughout the team year and cover areas such as team building, mental preparation, stress control, substance prevention, sleep and energy regulation, injury recovery, crisis intervention, and mental disorder treatment. The staff offering these services should be diverse by gender, profession, and culture, and the fees should be paid by the organization...
August 9, 2016: International Review of Psychiatry
https://www.readbyqxmd.com/read/27625070/effects-of-exercise-on-alterations-in-redox-homeostasis-in-elite-male-and-female-endurance-athletes-using-a-clinical-point-of-care-test
#15
Nathan A Lewis, Colin Towey, Georgie Bruinvels, Glyn Howatson, Charles R Pedlar
Exercise causes alterations in redox homeostasis (ARH). Measuring ARH in elite athletes may aid in the identification of training tolerance, fatigued states, and underperformance. To the best of our knowledge, no studies have examined ARH in elite male and female distance runners at sea level. The monitoring of ARH in athletes is hindered by a lack of reliable and repeatable in-the-field testing tools and by the rapid turnaround of results. We examined the effects of various exercise intensities on ARH in healthy (non-over-reached) elite male and female endurance athletes using clinical point-of-care (POC) redox tests, referred to as the free oxygen radical test (FORT) (pro-oxidant) and the free oxygen radical defence (FORD) (antioxidant)...
October 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27603761/psychological-and-physiological-markers-of-stress-in-concussed-athletes-across-recovery-milestones
#16
Michael G Hutchison, Lynda Mainwaring, Arrani Senthinathan, Nathan Churchill, Scott Thomas, Doug Richards
BACKGROUND: Sport-related concussions are associated with a range of physical, cognitive, and behavioral disturbances that are highly variable across individuals. Much remains unknown about the effects of sport concussion, and changes in markers of psychological and physiological stress over the recovery timeline. OBJECTIVE: To examine psychological (mood, stress, sleep quality, and symptoms) and physiological (heart rate variability and salivary cortisol) measures in concussed athletes over clinical recovery milestones...
September 6, 2016: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/27537412/can-cold-water-immersion-enhance-recovery-in-elite-olympic-weightlifters-an-individualized-perspective
#17
Jan Schimpchen, Maximilian Wagner, Alexander Ferrauti, Michael Kellmann, Mark Pfeiffer, Tim Meyer
We investigated whether cold water immersion following 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 two high intensity training microcycles consisting of five training sessions that were either followed by a cold water immersion or passive recovery...
August 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27454495/endoscopic-single-approach-forearm-fasciotomy-for-chronic-exertional-compartment-syndrome-long-term-follow-up
#18
L Pegoli, A Pozzi, G Pivato
BACKGROUND: Chronic exertional compartment syndrome of the forearm is an uncommon condition, occurring in some populations such as athletes. The standard surgical treatment for professional athletes who cannot avoid trigger activity is an open forearm fasciotomy, which may require a long recovery time. The aim of this study is to present a new endoscopic single approach forearm fasciotomy technique and outcomes of at least 3 years follow up. METHODS: We performed the endoscopic single approach forearm fasciotomy in 4 forearms in 3 men with the mean age of 25 years...
February 2016: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/27428532/parameters-of-low-back-pain-chronicity-among-athletes-associations-with-physical-and-mental-stress
#19
Jahan Heidari, Tobias Mierswa, Jens Kleinert, Ida Ott, Claudia Levenig, Monika Hasenbring, Michael Kellmann
OBJECTIVE: In the general population, physical and mental stress factors are linked to chronic low back pain (LBP). The aim of the present study was to examine this association among athletes. DESIGN: Longitudinal study with a six-month interval between measurements. SETTING: Questionnaires were filled out at home, either in paper-pencil version or online. PARTICIPANTS: Eighty-two male and 57 female athletes (N = 139, MAge = 32...
September 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/27374554/morinda-citrifolia-leaf-enhanced-performance-by-improving-angiogenesis-mitochondrial-biogenesis-antioxidant-anti-inflammatory-stress-responses
#20
Nor Aijratul Asikin Mohamad Shalan, Noordin M Mustapha, Suhaila Mohamed
Morinda citrifolia fruit, (noni), enhanced performances in athletes and post-menopausal women in clinical studies. This report shows the edible noni leaves water extract enhances performance in a weight-loaded swimming animal model better than the fruit or standardized green tea extract. The 4weeks study showed the extract (containing scopoletin and epicatechin) progressively prolonged the time to exhaustion by threefold longer than the control, fruit or tea extract. The extract improved (i) the mammalian antioxidant responses (MDA, GSH and SOD2 levels), (ii) tissue nutrient (glucose) and metabolite (lactate) management, (iii) stress hormone (cortisol) regulation; (iv) neurotransmitter (dopamine, noradrenaline, serotonin) expressions, transporter or receptor levels, (v) anti-inflammatory (IL4 & IL10) responses; (v) skeletal muscle angiogenesis (VEGFA) and (v) energy and mitochondrial biogenesis (via PGC, UCP3, NRF2, AMPK, MAPK1, and CAMK4)...
December 1, 2016: Food Chemistry
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