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Recovery, Performance, Athlete

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https://www.readbyqxmd.com/read/27906554/sleep-quality-and-high-intensity-interval-training-at-two-different-times-of-day-a-crossover-study-on-the-influence-of-the-chronotype-in-male-collegiate-soccer-players
#1
Jacopo A Vitale, Matteo Bonato, Letizia Galasso, Antonio La Torre, Giampiero Merati, Angela Montaruli, Eliana Roveda, Franca Carandente
The influence of the chronotype on the sleep quality in male collegiate soccer players in response to acute high intensity interval training (HIIT) performed at two different times of day was evaluated. The sleep quality was poorer in the morning-type than in the evening-type players after the evening HIIT session, whereas no significant changes in the sleep quality of the two chronotypes after the morning HIIT session was observed. The results suggest that an athlete's chronotype should be taken into account when scheduling training sessions and to promote faster recovery processes...
December 1, 2016: Chronobiology International
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
#2
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/27903590/anterior-cruciate-ligament-derived-stem-cells-transduced-with-bmp2-accelerate-graft-bone-integration-after-acl-reconstruction
#3
Yohei Kawakami, Koji Takayama, Tomoyuki Matsumoto, Ying Tang, Bing Wang, Yutaka Mifune, James H Cummins, Ryan J Warth, Ryosuke Kuroda, Masahiro Kurosaka, Freddie H Fu, Johnny Huard
BACKGROUND: Strong graft-bone integration is a prerequisite for successful graft remodeling after reconstruction of the anterior cruciate ligament (ACL) using soft tissue grafts. Novel strategies to accelerate soft tissue graft-bone integration are needed to reduce the need for bone-tendon-bone graft harvest, reduce patient convalescence, facilitate rehabilitation, and reduce total recovery time after ACL reconstruction. HYPOTHESIS: The application of ACL-derived stem cells with enhanced expression of bone morphogenetic protein 2 (BMP2) onto soft tissue grafts in the form of cell sheets will both accelerate and improve the quality of graft-bone integration after ACL reconstruction in a rat model...
November 30, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27901587/changes-in-functional-connectivity-of-the-brain-associated-with-a-history-of-sport-concussion-a-preliminary-investigation
#4
Nathan Churchill, Michael G Hutchison, General Leung, Simon Graham, Tom A Schweizer
OBJECTIVE: There is evidence of long-term clinical consequences associated with a history of sport concussion. However, there remains limited information about the underlying changes in brain function. The goal of this study was to identify brain regions where abnormal resting-state function is associated with chronic concussion, for athletes without persistent symptoms. METHODS: Functional Magnetic Resonance Imaging (fMRI) was performed on a group of athletes with prior concussion (n = 22) and a group without documented injury (n = 21)...
November 30, 2016: Brain Injury: [BI]
https://www.readbyqxmd.com/read/27895900/nutritional-implications-for-ultra-endurance-walking-and-running-events
#5
REVIEW
Eric Williamson
This paper examines the various nutritional challenges which athletes encounter in preparing for and participating in ultra-endurance walking and running events. Special attention is paid to energy level, performance, and recovery within the context of athletes' intake of carbohydrate, protein, fat, and various vitamins and minerals. It outlines, by way of a review of literature, those factors which promote optimal performance for the ultra-endurance athlete and provides recommendations from multiple researchers concerned with the nutrition and performance of ultra-endurance athletes...
2016: Extreme Physiology & Medicine
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/27889683/biomechanics-of-simulated-versus-natural-cross-country-sit-skiing
#7
V Rosso, L Gastaldi, W Rapp, S Lindinger, Y Vanlandewijck, V Linnamo
The purpose of this study was to investigate the biomechanics of cross-country sit-skiing in simulated and natural skiing. Thirteen international level athletes participated in a ski ergometer test (simulated conditions) and a test on snow in a ski-tunnel (natural conditions) using their personal sit-ski. Tests in both conditions were performed at individual maximal speed. When comparing the two conditions the main results were: (1) maximal speed in simulated conditions was lower (p<0.05) but correlated well with the natural condition (r=0...
November 11, 2016: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/27882611/chronic-lactate-supplementation-does-not-improve-blood-buffering-capacity-and-repeated-high-intensity-exercise
#8
L F Oliveira, V de Salles Painelli, K Nemezio, L S Gonçalves, G Yamaguchi, B Saunders, B Gualano, G G Artioli
Since there is conflicting data on the buffering and ergogenic properties of calcium lactate (CL), we investigated the effect of chronic CL supplementation on blood pH, bicarbonate, and high-intensity intermittent exercise performance. Sodium bicarbonate (SB) was used as a positive control. Eighteen athletes participated in this double-blind, placebo-controlled, crossover, fully counterbalanced study. All participants underwent three different treatments: placebo (PL), CL, and SB. The dose was identical in all conditions: 500 mg/kg BM divided into four daily individual doses of 125 mg/kg BM, for five consecutive days, followed by a 2-7-day washout period...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27881668/restoration-of-thermoregulation-after-exercise
#9
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
#10
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/27861911/metabolism-of-ketone-bodies-during-exercise-and-training-physiological-basis-for-exogenous-supplementation
#11
Mark Evans, Karl E Cogan, Brendan Egan
Optimising training and performance through nutrition strategies is central to supporting elite sportspeople, much of which has focussed on manipulating the relative intake of carbohydrate and fat and their contributions as fuels for energy provision. The ketone bodies, namely acetoacetate, acetone, and β-hydroxybutyrate (βHB), are produced in the liver during conditions of reduced carbohydrate availability and serve as an alternative fuel source for peripheral tissues including brain, heart and skeletal muscle...
November 10, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27857520/secondary-elements-of-blood-ph-variation-can-influence-the-effort-effectiveness-based-on-adaptive-changes-within-a-group-of-elite-athletes
#12
Ştefan Adrian Martin, Valeriu Tomescu, Septimiu Voidăzan
AIM: pH is the direct indicator of the body reaction following the activities performed. Establishing precise correlations between pH and blood biochemical parameters might support the balancing of values during periods of marked physical activity. METHOD: We conducted a case study in a group of elite rowers. Twelve athletes were included in the study. Monitoring was carried out by collecting biological samples several times a day: in the morning, 80 minutes pre-workout, 12 hours after the last physical effort performed, at two different times, 10 days apart...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27855131/patellar-tendinopathy-diagnosis-and-treatment
#13
David Figueroa, Francisco Figueroa, Rafael Calvo
Patellar tendinopathy is a common cause of pain in athletes' knees. Historically, it has been related to jumping sports, such as volleyball and basketball. Repetitive jumping generates a considerable load of energy in the extensor mechanism, leading to symptoms. The main pathophysiologic phenomenon in patellar tendinopathy is tendinosis, which is a degenerative disorder rather than an inflammatory disorder; therefore, the other popular term for this disease, tendinitis, is not appropriate. The nonsurgical treatment of patellar tendinopathy is focused on eccentric exercises and often has good results...
December 2016: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27845297/pain-perception-in-athletes-a-brief-review
#14
L Kakiashvili, M Tsagareli, D Mjavanadze, I Kvachadze
Pain is almost synonymous with sport. For many athletes, pain is a normal everyday experience and success is often achieved in spite of pain. However, pain can restrict the ability to concentrate on performance and take away the opportunity to compete. It can even end sporting careers. Therefore, the relationship between pain and sport is filled with challenges for athletes. One consequence and response that sport researchers have focused on is the pain associated with injury. Sport medicine professionals have directed the major part of their research and rehabilitation attention towards the physical recovery, but psychological factors are also very important for injured athletes...
October 2016: Georgian Medical News
https://www.readbyqxmd.com/read/27837349/comparison-of-body-composition-and-nutrients-deficiencies-between-portuguese-rink-hockey-players
#15
Maria-Raquel G Silva, Hugo-Henrique Silva
: We evaluated dietary intake and body composition of child and adolescent rink-hockey players and controls. Seventy-two male rink-hockey players (38 children and 34 adolescents) and 79 male controls (43 children and 36 adolescents) were evaluated in order to collect training data, detailed dietary intake and body composition. Rink-hockey players presented significantly lower body fat (BF) and higher fat-free mass (FFM) than controls. Mean intakes of carbohydrate and protein were considered to be adequate, but mean intakes of fat were above the recommended levels in athletes...
November 12, 2016: European Journal of Pediatrics
https://www.readbyqxmd.com/read/27826399/contact-karate-promotes-post-exercise-hypotension-in-young-adult-males
#16
Marcelo Magalhaes Sales, Caio Victor de Sousa, Wellington Barbosa Sampaio, Carlos Ernesto, Rodrigo Alberto Vieira Browne, Jose Fernando Vila Nova de Moraes, Daisy Motta-Santos, Milton Rocha Moraes, John Eugene Lewis, Herbert Gustavo Simões, Francisco Martins da Silva
BACKGROUND: Worldwide, systemic arterial hypertension is a leading cause of death and non-communicable cardiovascular disease. A major factor contributing to this disease is a sedentary lifestyle. However, physical exercise, such as martial arts, may be an option for blood pressure (BP) control. The magnitude of post-exercise hypotension is associated with a prolonged decrease in BP in normotensive and hypertensive individuals. OBJECTIVES: The present study aimed to verify the effects of a Contact Karate (CK) session on BP responses during a post-exercise recovery period in young adults...
September 2016: Asian Journal of Sports Medicine
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
#17
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/27813687/the-effects-of-a-transcontinental-flight-on-markers-of-coagulation-and-fibrinolysis-in-healthy-men-after-vigorous-physical-activity
#18
Brian R Kupchak, William J Kraemer, David R Hooper, Cathy Saenz, Lexie L Dulkis, Paul J Secola, Lee E Brown, Andrew J Galpin, Jared W Coburn, William H DuPont, Lydia K Caldwell, Jeff S Volek, Carl M Maresh
PURPOSE: Athletes and military service members are known to undergo strenuous exercise and sometimes have to take long haul flights soon afterwards; however, its combined effect on many physiological functions is relatively unknown. Therefore, we examined the combined effects of a full-body muscle-damaging workout and transcontinental flight on coagulation and fibrinolysis in healthy, resistance trained men. We also determined the efficacy of a full-body compression garment in limiting their coagulation responses...
November 4, 2016: Chronobiology International
https://www.readbyqxmd.com/read/27813685/physical-activity-and-intermittent-postconcussion-symptoms-after-a-period-of-symptom-limited-physical-and-cognitive-rest
#19
Quinton Sawyer, Brian Vesci, Tamara C Valovich McLeod
: Reference: Schneider KJ, Iverson GL, Emery CA, McCrory P, Herring SA, Meeuwisse WH. The effects of rest and treatment following sport-related concussion: a systematic review of the literature. Br J Sports Med. 2013;47(5):304-307. Clinical Question After concussion and a period of symptom-limited physical and cognitive rest, do athletes who experience intermittent symptoms return to asymptomatic condition more quickly with physical activity than with prolonged physical rest? DATA SOURCES: One investigator performed an individual search for each research question using the following databases: CINAHL, Cochrane Controlled Trials Registers, EMBASE, HealthSTAR, ProQuest, PsychInfo, PubMed, SPORTDiscus, and Web of Science...
November 4, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27791976/foot-and-ankle-kinematics-and-dynamic-electromyography-quantitative-analysis-of-recovery-from-peroneal-neuropathy-in-a-professional-football-player
#20
Nikhil K Prasad, Krista A Coleman Wood, Robert J Spinner, Kenton R Kaufman
The assessment of neuromuscular recovery after peripheral nerve surgery has typically been a subjective physical examination. The purpose of this report was to assess the value of gait analysis in documenting recovery quantitatively. A professional football player underwent gait analysis before and after surgery for a peroneal intraneural ganglion cyst causing a left-sided foot drop. Surface electromyography (SEMG) recording from surface electrodes and motion parameter acquisition from a computerized motion capture system consisting of 10 infrared cameras were performed simultaneously...
2016: Journal of Surgical Orthopaedic Advances
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