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https://www.readbyqxmd.com/read/29233238/neck-kinematics-and-electromyography-while-wearing-head-supported-mass-during-running
#1
Matthew M Hanks, JoEllen M Sefton, Gretchen D Oliver
BACKGROUND: Advanced combat helmets (ACH) coupled with night-vision goggles (NVG) are required for tactical athletes during training and service. Head and neck injuries due to head supported mass (HSM) are a common occurrence in military personnel. The current study aimed to investigate the effects of HSM on neck muscle fatigue that may lead to chronic stress and injury of the head and neck. METHODS: Subjects wore an ACH and were affixed with electromagnetic sensors to obtain kinematic data, as well as EMG electrodes to obtain muscle activations of bilateral sternocleidomastoid, upper trapezius, and paraspinal muscles while running on a treadmill...
January 1, 2018: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29230208/ramadan-fasting-exerts-immunomodulatory-effects-insights-from-a-systematic-review
#2
Mohammad Adawi, Abdulla Watad, Stav Brown, Khadija Aazza, Hicham Aazza, Mohamed Zouhir, Kassem Sharif, Khaled Ghanayem, Raymond Farah, Hussein Mahagna, Stefano Fiordoro, Samir Giuseppe Sukkar, Nicola Luigi Bragazzi, Naim Mahroum
Ramadan is the ninth month of the Islamic lunar calendar and is observed by Muslims as a month of fasting. All Muslim adults are expected to fast; nevertheless certain subgroups, including sick, frail subjects, and pregnant women, among others, are exempted. Ramadan fasting has been shown to impact on body systems in different manners. The influence of Ramadan fasting on immune system regulation remains elusive; however, immune system changes, such as the modulation of body response to various infectious, stressful, and other harmful events, are of great interest during fasting...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29228800/fifth-metatarsal-jones-fractures-in-the-athlete
#3
David A Porter
Fifth metatarsal fractures, otherwise known as "Jones" fractures, occur commonly in athletes and nonathletes alike. While recent occurrence in the popular elite athlete has increased public knowledge and interest in the fracture, this injury is common at all levels of sport. This review will focus on all three types of Jones fractures. The current standard for treatment is operative intervention with intramedullary screw fixation. Athletes typically report an acute episode of lateral foot pain, described as an ache...
December 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29228408/-biomechanical-evaluation-of-rehabilitation-after-surgical-repair-of-achilles-tendon-ruptures
#4
Marlene Mauch, Markus Ulrich, Xaver Kaelin, Bernhard Segesser, Jochen Paul
Background Muscles and tendons are subjected to a high level of stress in everyday life and sports. This often leads to injuries and is associated with training failure and reduced performance as well as with high costs for treatment and rehabilitation. Fast and successful treatment is therefore very important, both from an athletic and economic point of view. This study aims to demonstrate the relevance of biomechanical procedures for the objective monitoring of rehabilitation. At the same time, the results are to be used to establish progress and evaluation criteria for an efficient and controlled rehabilitation...
December 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29226892/evaluation-of-increase-in-intraventricular-gradient-and-dynamic-obstruction-during-exercise-stress-test-in-competitive-runners
#5
Kadir Uğur Mert, Ferhat Radi, Ayda Sadati, Gurbet Özge Mert, Muhammet Dural
OBJECTIVE: Sudden cardiac death in athletes is one of the most tragic health events seen both in our country and all over the world. In some of those athletes, there is no obvious structural abnormality. Dynamic changes in intracardiac hemodynamics during exercise may be a cause for sudden death in these athletes, the impact of exercise on intracardiac gradient and cardiac hemodynamic parameters in athletes was compared with healthy controls. METHODS: A total of 21 professional male athletes and 21 healthy male controls were included in the study...
December 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29224470/poor-sleep-is-related-to-lower-general-health-increased-stress-and-increased-confusion-in-elite-gaelic-athletes
#6
Michelle Biggins, Roisin Cahalan, Thomas Comyns, Helen Purtill, Kieran O'Sullivan
OBJECTIVES: Persistent poor sleep is associated with a range of adverse health outcomes. Sleep is considered the main method of recovery in athletes; however, studies report that a significant number of athletes are getting insufficient sleep. The purpose of this study was to assess the sleep profiles of elite Gaelic athletes and to compare wellbeing in those with poor sleep and those with good sleep. METHODS: 69 elite Gaelic athletes completed questionnaires, including the Pittsburgh Sleep Quality Index (PSQI), Subjective Health Complaints Inventory (SHC), Nordic Musculoskeletal Questionnaire (NMQ), stress subscale of the Depression Anxiety Stress Scale (DASS), the tension-anxiety, anger-hostility and confusion-bewilderment subscales of the Profile of Mood States (POMS) as well as the catastrophising subscale of the Coping Strategies Questionnaire (CSQ)...
December 11, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29220207/mr-imaging-of-muscle-trauma-anatomy-biomechanics-pathophysiology-and-imaging-appearance
#7
Dyan V Flores, Catalina Mejía Gómez, Mauricio Estrada-Castrillón, Edward Smitaman, Mini N Pathria
Muscle is an important component of the muscle-tendon-bone unit, driving skeletal motion through contractions that alter the length of the muscle. The muscle and myotendinous junction (MTJ) are most commonly injured in the young adult, as a result of indirect mechanisms such as overuse or stretching, direct impact (penetrating or nonpenetrating), or dysfunction of the supporting connective tissues. Magnetic resonance (MR) imaging is widely used for assessment of muscle injuries. This review illustrates the MR imaging appearance of a broad spectrum of acute, subacute, and chronic traumatic lesions of muscle, highlighting the pathophysiology, biomechanics, and anatomic considerations underlying these lesions...
December 8, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29214319/electrocardiographic-findings-in-national-basketball-association-athletes
#8
Marc P Waase, R Kannan Mutharasan, William Whang, Marco R DiTullio, John P DiFiori, Lisa Callahan, Jimmie Mancell, Dermot Phelan, Allan Schwartz, Shunichi Homma, David J Engel
Importance: While it is known that long-term intensive athletic training is associated with cardiac structural changes that can be reflected on surface electrocardiograms (ECGs), there is a paucity of sport-specific ECG data. This study seeks to clarify the applicability of existing athlete ECG interpretation criteria to elite basketball players, an athlete group shown to develop significant athletic cardiac remodeling. Objective: To generate normative ECG data for National Basketball Association (NBA) athletes and to assess the accuracy of athlete ECG interpretation criteria in this population...
December 6, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29200094/characteristics-of-a-national-level-female-weightlifter-peaking-for-competition-a-case-study
#9
Caleb D Bazyler, Satoshi Mizuguchi, Michael C Zourdos, Kimitake Sato, Ashley A Kavanaugh, Brad H DeWeese, Kevin F Breuel, Michael H Stone
This study investigated physiological and performance changes of a national level 69kg female weightlifter following three competition phases over a 28-week training period. The athlete first trained for a regional championship (weeks 1-12), followed by a local competition (weeks 13-23) and the national championship (weeks 24-28). Body mass, vastus lateralis cross-sectional area, and unloaded and loaded squat jump performance were assessed weekly during each 4-week competition phase. Serum biomarkers, and dynamic mid-thigh pulls were assessed prior to and after each competition phase...
December 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29199551/royal-sun-culinary-medicinal-mushroom-agaricus-brasiliensis-agaricomycetes-supplement-in-training-capacity-improvement-parameters
#10
Flávio F Silva, Guilherme A C de Oliveira, Hugo C Martins Costa, Wiliam C B Regis
People seek a greater quality of life and healthy aging that culminates in improved self-esteem and vitality in the performance of daily activities; this is generating a growing number of people enrolled in gyms in search of quick results. However, this training can result in physical and metabolic damage. During physical exercise, under conditions of oxidative stress, changes take place that lead to the onset of fatigue. The Agaricus brasiliensis mushroom is native to Brazil and has therapeutic potential, with widely studied antioxidant and immunomodulatory capabilities...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/29199550/facilitating-dual-careers-by-improving-resistance-to-chronic-stress-effects-of-an-intervention-programme-for-elite-student-athletes
#11
Jeffrey Sallen, Karen Hemming, Alfred Richartz
The starting point of this contribution is the potential risk to health and performance from the combination of elite sporting careers with the pursuit of education. In European sport science and politics, structural measures to promote dual careers in elite sports have been discussed increasingly of late. In addition to organisational measures, there are calls for educational-psychological intervention programmes supporting the successful management of dual careers at the individual level. This paper presents an appropriate intervention programme and its evaluation: stress-resistance training for elite athletes (SRT-EA)...
December 3, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29198093/-strenuous-and-prolonged-exercise-and-upper-respiratory-tract-infection-treatment-or-threat
#12
REVIEW
Danit Atias-Varon, Yuval Heled
Prolonged and strenuous exercise may lead to changes in the immune system function and to temporary suppression in defense against pathogens. These changes likely increase the risk of those engaging in prolonged and strenuous physical activity to develop upper respiratory tract infection and to reduce the level of performance. On the other hand, it appears that moderate physical activity reduces the risk of upper respiratory tract infection. Various populations, such as professional athletes and soldiers in combat units, who engage in daily strenuous exercise, may therefore be a high risk group...
November 2017: Harefuah
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
#13
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/29189930/periodization-theory-confronting-an-inconvenient-truth
#14
John Kiely
Periodization theory has, over the past seven decades, emerged as the preeminent training planning paradigm. The philosophical underpinnings of periodization theory can be traced back to the integration of diverse shaping influences, whereby coaching beliefs and traditions were blended with historically available scientific insights and contextualized against pervading social planning models. Since then, many dimensions of elite preparation have evolved significantly, as driven by a combination of coaching innovations and science-led advances in training theory, techniques, and technologies...
November 30, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29182431/impact-induced-muscle-damage-and-contact-sport-aetiology-effects-on-neuromuscular-function-and-recovery-and-the-modulating-effects-of-adaptation-and-recovery-strategies
#15
Mitchell Naughton, Joanna Miller, Gary J Slater
Athletes involved in contact-sports are habitually exposed to skeletal muscle damage as part of their training and performance environments. This often leads to exercise-induced muscle damage (EIMD) resulting from repeated eccentric and/or high-intensity exercise, and impact-induced muscle damage (IIMD) resulting from collisions with opponents and the playing surface. Whilst EIMD has been an area of extensive investigation, IIMD has received comparatively little research, with the magnitude and timeframe of alterations following IIMD not presently well understood...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29182422/salivary-biomarkers-and-training-load-during-training-and-competition-in-paralympic-swimmers
#16
Ciara Sinnott-O'Connor, Tom Comyns, Alan M Nevill, Giles Warrington
PURPOSE: Stress responses in athletes can be attributed to training and also competition, where increased physiological and psychological stress may negatively impact on performance and recovery. The aim of this study was to examine the relationship between training load and salivary biomarkers IgA, alpha-amylase (AA) and cortisol across a 16-week preparation phase and 10-day competition phase in Paralympic swimmers. METHODS: Four Paralympic swimmers provided bi-weekly saliva samples during three training phases - 1) normal training, 2) intensified training and 3) taper as well as daily saliva samples in the 10 day Paralympic competition (2016 Paralympic Games)...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29182365/career-development-and-learning-pathways-of-paralympic-coaches-with-a-disability
#17
Scott Douglas, William R Falcão, Gordon A Bloom
The purpose of this study was to gain an understanding of the career development and learning pathways of Paralympic head coaches who previously competed as Paralympic athletes. Each coach participated in a semistructured interview. A thematic analysis of the data revealed three higher order themes, which were called becoming a coach, learning to coach, and lifelong learning and teaching. Across these themes, participants discussed interactions with other coaches and athletes with a disability, learning from mentors and coaching clinics, as well as limited formal educational opportunities they experienced transitioning from athlete to head coach...
November 28, 2017: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/29182021/injuries-depicted-in-sport-related-films
#18
Robert P Olympia, Hannah Wakefield, Bryan Wakefield, Christopher J Weber
The perception that children and adolescents have of injuries may be influenced by their depiction in sport-related films. The objective of this study was to determine the depiction of injuries in a select number of sport-related films. Forty-four films were analyzed. Injury category, on-the-field management, and long-term management were determined for each injury. Major injuries were defined as injuries requiring prompt intervention and immediate discontinuation of sport participation. A total of 49 injuries were depicted, categorized as fracture (n = 11), contusion (n = 10), brain concussion (n = 8), muscle cramps (n = 5), laceration/abrasion (n = 4), ligamentous knee injury (n = 4), shoulder dislocation (n = 2), rotator cuff injury (n = 2), ankle sprain (n = 2), and unspecified injury (n = 1)...
November 1, 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/29177073/the-anticipatory-stress-response-to-sport-competition-a-systematic-review-with-meta-analysis-of-cortisol-reactivity
#19
Kjell N van Paridon, Matthew A Timmis, Charlotte M Nevison, Matt Bristow
Objective: Athletes anticipating sport competition regularly experience distinct emotional and physiological responses as a result of the expected psychosocial and physical stress. Specifically, cortisol, an indicator of hypothalamic-pituitary-adrenal axis activation, prepares the athlete for the psychological and physiological demands of competition. The objective of this meta-analysis is to analyse the magnitude of the anticipatory cortisol response in athletes preparing to participate in sport competition and to examine the influence of gender, level of competition and data collection time...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29165733/impact-of-type-of-sport-gender-and-age-on-red-blood-cell-deformability-of-elite-athletes
#20
Fabian Tomschi, Wilhelm Bloch, Marijke Grau
Our objective was to detect possible differences in red blood cell (RBC) deformability of elite athletes performing different types of sports and being of different age and gender.182 athletes were included in this cross-sectional study. RBC deformability was measured using the laser-assisted optical rotational cell-analyzer. Maximal elongation index (EI max) and shear stress at half-maximum deformation (SS 1/2) were calculated. The ratio SS 1/2 /EI max (EI Ratio) was calculated with low values representing high RBC deformation...
November 17, 2017: International Journal of Sports Medicine
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