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https://www.readbyqxmd.com/read/28737609/the-effects-of-supplementary-low-load-blood-flow-restriction-training-on-morphological-and-performance-based-adaptations-in-team-sport-athletes
#1
Brendan R Scott, Jeremiah J Peiffer, Paul S R Goods
Scott, BR, Peiffer, JJ, and Goods, PSR. The effects of supplementary low-load blood flow restriction training on morphological and performance-based adaptations in team sport athletes. J Strength Cond Res 31(8): 2147-2154, 2017-Low-load resistance training with blood flow restriction (BFR) may be a method to enhance muscular development even in trained athletes. This study aimed to assess whether supplemental low-load BFR training can improve muscle size, strength, and physical performance characteristics in team sport athletes...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28737585/biomarkers-in-sports-and-exercise-tracking-health-performance-and-recovery-in-athletes
#2
Elaine C Lee, Maren S Fragala, Stavros A Kavouras, Robin M Queen, J 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...
July 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28730946/contribution-of-upper-limb-muscles-to-two-different-gripping-styles-in-elite-indoor-tug-of-war-athletes
#3
Wen-Tzu Tang, Wei-Chih Liao, Hsin-Min Lee
To investigate characteristic upper limb muscle use between two common tug of war (TOW) gripping styles, 20 elite athletes from two high school TOW teams were recruited. Under conditioned attack pulling (with 90% maximal force) on a tug machine, participants used their own habitual gripping style to pull for five 15-s trials. Force and kinematic measurements showed a significantly better force performance and higher centre-of-gravity tilting angle with the gripping style one than with the gripping style two (GS2) (both p < 0...
July 21, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28723843/no-superior-adaptations-to-carbohydrate-periodization-in-elite-endurance-athletes
#4
Kasper Degn Gejl, Line Thams, Mette Hansen, Torben Rokkedal-Lausch, Peter Plomgaard, Lars Nybo, Filip J Larsen, Daniele A Cardinale, Kurt Jensen, Hans-Christer Holmberg, Kristian Vissing, Niels Ørtenblad
PURPOSE: The present study investigated the effects of periodic CHO restriction on endurance performance and metabolic markers in elite endurance athletes. METHODS: Twenty-six male elite endurance athletes (VO2max: 65.0 ml O2[BULLET OPERATOR]kg[BULLET OPERATOR]min) completed 4 weeks of regular endurance training, while matched and randomized into two groups training with (Low) or without (High) carbohydrate (CHO) manipulation three days a week. The CHO manipulation days consisted of a 1-hr high intensity bike session in the morning, recovery for 7 hrs while consuming isocaloric diets containing either high CHO (414±2...
July 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28723842/reduced-neuromuscular-performance-in-amenorrheic-elite-endurance-athletes
#5
Åsa B Tornberg, Anna Melin, Fiona Manderson Koivula, Anders Johansson, Sven Skouby, Jens Faber, Anders Sjödin
INTRODUCTION: Secondary functional hypothalamic amenorrhea (SFHA) is common among female athletes, especially in weight-sensitive sports. The aim of this study was to investigate the link between SFHA and neuromuscular performance in elite endurance athletes. METHODS: Sixteen eumenorrheic (EUM) and 14 SFHA athletes from national teams and competitive clubs participated. Methods included gynecological examination; body composition (DXA);; resting metabolic rate and work efficiency; exercise capacity; knee muscular strength (KMS) and knee muscular endurance (KME); reaction time (RT); blood sampling performed on the 3rd-5th day of the menstrual cycle, and 7-day assessment of energy availability...
July 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28715596/influence-of-physical-exercise-on-%C3%AE-amyloid-%C3%AE-synuclein-and-tau-accumulation-an-in-vitro-model-of-oxidative-stress-in-human-red-blood-cells
#6
C Iofrida, S Daniele, D Pietrobono, J Fusi, F Galetta, M L Trincavelli, U Bonuccelli, F Franzoni, C Martini
A common pathological feature of neurodegenerative disorders (NDs), such as Alzheimer's (AD) and Parkinson's (PD) diseases, is the abnormal accumulation and misfolding of specific proteins, primarily α-synuclein (α-syn), β-amyloid1-42 (Aβ) and tau, in brain and in peripheral tissues too. Oxidative stress has been proved to be involved in NDs at various levels and, in particular, in such protein alterations, on the contrary physical activity is emerging as a counteracting factor in NDs. In the present work, the content of Aβ, α-syn and tau in red blood cells (RBCs) derived from ten endurance athletes (ATHL) and ten sedentary volunteers (SED) were compared before and after in vitrooxidative stress treatment...
July 1, 2017: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/28708708/atopy-in-elite-endurance-athletes
#7
Renata N Teixeira, Gerson Dos Santos Leite, Matteo Bonini, Renata Gorjão, Rosana C Agondi, Cristina M Kokron, Celso R F Carvalho
OBJECTIVE: To assess the frequency of atopy (specific IgE levels), to evaluate the allergic symptoms using the Allergy Questionnaire for Athletes (AQUA), and to determine whether atopy is associated with allergic symptoms in elite endurance athletes. DESIGN: Cross-sectional study. SETTING: Assessments were performed at Hospital das Clinicas-São Paulo University Medical School. PARTICIPANTS: Fifty-nine elite endurance athletes (triathletes and runners)...
July 11, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28707499/performance-of-wells-score-to-predict-deep-vein-thrombosis-and-pulmonary-embolism-in-endurance-athletes
#8
Amanda L Zaleski, Beth A Taylor, Linda S Pescatello, Paul D Thompson, Craig Denegar
INTRODUCTION: There are an increasing number of reports describing deep vein thrombosis (DVT) and/or pulmonary embolism (PE) in otherwise healthy endurance athletes. The Wells score is the most commonly used clinical prediction rule to diagnose DVT/PE in clinical populations. However, the Wells score may have limited utility for recognition of DVT/PE in athletes, contributing to missed or delayed diagnosis. OBJECTIVE: We performed an analysis of the ability of the Wells score to identify DVT/PE events in athletes through a review of published case reports...
July 14, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28706923/influence-of-abo-blood-group-on-sports-performance
#9
Giuseppe Lippi, Giorgio Gandini, Gian Luca Salvagno, Spyros Skafidas, Luca Festa, Elisa Danese, Martina Montagnana, Fabian Sanchis-Gomar, Cantor Tarperi, Federico Schena
BACKGROUND: Despite being a recessive trait, the O blood group is the most frequent worldwide among the ABO blood types. Since running performance has been recognized as a major driver of evolutionary advantage in humans, we planned a study to investigate whether the ABO blood group may have an influence on endurance running performance in middle-aged recreational athletes. METHODS: The study population consisted of 52 recreational, middle-aged, Caucasian athletes (mean age: 49±13 years, body mass index, 23...
June 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28706812/mini-open-posterior-compartment-release-for-chronic-exertional-compartment-syndrome-of-the-leg
#10
Kyle P Lavery, Michael Bernazzani, Kevin McHale, William Rossy, Luke Oh, George Theodore
Chronic exertional compartment syndrome (CECS) is a well-recognized cause of leg pain in endurance athletes. Surgical fasciotomy for posterior leg CECS historically has inferior clinical results compared with anterior and lateral compartment release. Poor surgical technique with inadequate release may contribute to less reliable outcomes. In this Technical Note with accompanying video, we describe a mini-open approach for posterior CECS of the leg.
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706467/ketogenic-diet-benefits-body-composition-and-well-being-but-not-performance-in-a-pilot-case-study-of-new-zealand-endurance-athletes
#11
Caryn Zinn, Matthew Wood, Mikki Williden, Simon Chatterton, Ed Maunder
BACKGROUND: Low-carbohydrate, high-fat and ketogenic diets are increasingly adopted by athletes for body composition and sports performance enhancements. However, as yet, there is no consensus on their efficacy in improving performance. There is also no comprehensive literature on athletes' experiences while undertaking this diet. The purpose of this pilot work was two-fold: i. to examine the effects of a non-calorie controlled ketogenic diet on body composition and performance outcomes of endurance athletes, and ii...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28700514/low-volume-high-intensity-interval-versus-continuous-endurance-training-effects-on-hematological-and-cardiorespiratory-system-adaptations-in-professional-canoe-polo-athletes
#12
Mohsen Sheykhlouvand, Mohammadali Gharaat, Erfan Khalili, Hamid Agha-Alinejad, Farhad Rahmaninia, Hamid Arazi
The aim of this study was to compare the effect of two paddling-based high-intensity interval training (HIIT) and continuous endurance training (CET) on hematological, immunological, and cardiorespiratory adaptations in professional canoe polo athletes. Twenty one male canoe polo athletes were randomly divided into one of three groups (N=7): 1) HIIT with variable intensity (VIHIIT) (6×60-second at 100,110,120,130,130, 130,120,110,100% vV[Combining Dot Above]O2peak from 1 to 9 session respectively, 1:3 work to recovery ratio); 2) HIIT with variable volume (VVHIIT) (6,7,8,9,9,9,8,7,6 repetitions/session from 1 to 9 session respectively)×60-second at lowest velocity that elicited V[Combining Dot Above]O2peak (vV[Combining Dot Above]O2peak), 1:3 work to recovery ratio); and 3) the CET group performed 3 times × 60 min paddling sessions (75% vV[Combining Dot Above]O2peak) per week for 3 weeks...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28696986/fueling-the-triathlete-evidence-based-practical-advice-for-athletes-of-all-levels
#13
Andrew R Getzin, Cynthia Milner, Marie Harkins
Triathletes need to effectively fuel during training and racing to maximize their potential for success. While most research on fueling has focused on elite male triathletes, triathlon participation encompasses a broader demographic of racers ranging from those with aspirations of winning to those whose goals are completion. Carbohydrate is the primary macronutrient for fueling endurance activities. Athletes can usually tolerate 60 to 90 mg·h in the form of multiple different carbohydrate sources. Athletes should drink as thirst dictates and consider sodium replacement of sweat loss especially in individuals with a history of exercise-associated muscle cramps...
July 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28696985/tart-cherry-juice-in-athletes-a-literature-review-and-commentary
#14
Kenneth C Vitale, Shawn Hueglin, Elizabeth Broad
Tart cherry (TC) juice has many antioxidant and anti-inflammatory polyphenol compounds. TC lessens pain and accelerates strength recovery after exercise and decreases blood markers of inflammation/oxidative stress. These improvements occur in both strength and endurance exercise. TC supplementation may not be optimal during the adaptation/build stage of training. However, excessive inflammatory/oxidative stress during single-day intense training/competition or multiday tournaments may delay return to peak form...
July 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28696264/coronary-artery-calcification-among-endurance-athletes-hearts-of-stone
#15
EDITORIAL
Aaron L Baggish, Benjamin D Levine
No abstract text is available yet for this article.
July 11, 2017: Circulation
https://www.readbyqxmd.com/read/28692631/increased-protein-requirements-in-female-athletes-after-variable-intensity-exercise
#16
Denise J Wooding, Jeff E Packer, Hiroyuki Kato, Daniel W D West, Glenda Courtney-Martin, Paul B Pencharz, Daniel R Moore
PURPOSE: Protein requirements are primarily studied in the context of resistance or endurance exercise with little research devoted to variable-intensity intermittent exercise characteristic of many team sports. Further, female populations are underrepresented in dietary sports science studies. We aimed to determine a dietary protein requirement in active females performing variable-intensity intermittent exercise using the indicator amino acid oxidation (IAAO) method. We hypothesized that these requirements would be greater than current IAAO-derived estimates in non-active adult males...
July 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28674605/changes-in-running-economy-respiratory-exchange-ratio-and-vo2max-in-runners-following-a-10-day-altitude-training-camp
#17
Sebastian R Diebel, Ian Newhouse, David S Thompson, Vineet B K Johnson
Running economy (RE) and VO2max are important predictors of endurance performance for elite and semi-elite endurance athletes, with RE being an appropriate predictor in a homogenous running population. Altitude training has been observed to change RE (mL.kg(-1).min(-1)), and VO2max due to alterations resulting from acclimatization. This study tracked changes in RE and VO2max before and after a 10-day altitude training camp at 1828 meters. VO2max, RE expressed calorically, and respiratory exchange ratio (RER), were measured below anaerobic threshold (AT) to observe differences between pre-and post-altitude training...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28673735/properties-of-paraspinal-muscles-in-japanese-high-school-baseball-players-with-terminal-stage-lumbar-spondylolysis
#18
Hiroyuki Tsuboi, Yukihide Nishimura, Takeshi Sakata, Hideaki Tanina, Hideki Arakawa, Takeshi Nakamura, Yuichi Umezu, Fumihiro Tajima
BACKGROUND: Lumbar spondylolysis is a defect in the pars interarticularis that is common in young athletes; the stress distribution at the pars interarticularis is the highest in extension and rotation movements. The paraspinal muscles play an important role in stabilization of the lumbar spine; however, no study has assessed the properties of paraspinal muscles in athletes with lumbar spondylolysis. OBJECTIVE: To evaluate the properties of paraspinal muscles in athletes with lumbar spondylolysis...
June 30, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28662531/effects-of-in-season-explosive-strength-training-on-maximal-leg-strength-jumping-sprinting-and%C3%A2-intermittent-aerobic-performance-in-male-handball-athletes
#19
Souhail Hermassi, Mohamed Souhaiel Chelly, Georg Fieseler, Thomas Bartels, Stephan Schulze, Karl-Stefan Delank, Roy J Shephard, René Schwesig
Background Team handball is an intense ball sport with specific requirements on technical skills, tactical understanding, and physical performance. The ability of handball players to develop explosive efforts (e. g. sprinting, jumping, changing direction) is crucial to success. Objective The purpose of this pilot study was to examine the effects of an in-season high-intensity strength training program on the physical performance of elite handball players. Materials and methods Twenty-two handball players (a single national-level Tunisian team) were randomly assigned to a control group (CG; n = 10) or a training group (TG; n = 12)...
June 29, 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/28659467/motor-learning-in-a-complex-balance-task-and-associated-neuroplasticity-a-comparison-between-endurance-athletes-and-non-athletes
#20
Oliver Seidel, Daniel Carius, Rouven Kenville, Patrick Ragert
Studies suggested that motor expertise is associated with functional and structural brain alterations, which positively affect sensorimotor performance and learning capabilities. The purpose of the present study was to unravel differences in motor skill learning and associated functional neuroplasticity between endurance athletes (EA) and non-athletes (NA). For this purpose, participants had to perform a multimodal balance task (MBT) training on two sessions which were separated by one week. Before and after MBT-training, a static balance task (SBT) had to be performed...
June 28, 2017: Journal of Neurophysiology
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