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Relative Age effect in sports

Michał Bronikowski, Małgorzata Bronikowska, Beata Pluta, Janusz Maciaszek, Maciej Tomczak, Agata Glapa
The promotion of physical activity (PA) in children and their parents requires effective planning and sometimes even interventions. This study shows the effect of PA during a 15-week intervention program "Junior for Seniors" by applying a socioecological model to the interpretation of the data. This comprehensive approach emphasizes the fact that health promotion should focus not only on intrapersonal factors but also on the multilevel factors that might be determinants and modulators of increased PA. In 2015, 24 children ("juniors," 14 girls and 10 boys, aged M = 7...
2016: BioMed Research International
Hotfiel T, Swoboda B, Krinner S, Grim C, Engelhardt M, Uder M, Hei R
Foam rolling has been developed as a popular intervention in training and rehabilitation. However, evidence on its effects on the cellular and physiological level is lacking. The aim of this study was to assess the effect of foam rolling on arterial blood flow of the lateral thigh. Twenty-one healthy participants (age 25 ± 2 years, height 177 ± 9 cm, body weight 74 ± 9 kg) were recruited from the medical and sports faculty. Arterial tissue perfusion was determined by spectral Doppler and power Doppler ultrasound, represented as peak flow (Vmax), time average velocity maximum (TAMx), time average velocity mean (TAMn), and resistive index (RI), and with semiquantitative grading that was assessed by four blind-folded investigators...
September 23, 2016: Journal of Strength and Conditioning Research
Jeff DeCelles, Rebecca B Hershow, Zachary A Kaufman, Katherine R Gannett, Thandanani Kombandeya, Cynthia Chaibva, David A Ross, Abigail Harrison
INTRODUCTION: Grassroot Soccer (GRS) developed 2 brief and scalable voluntary medical male circumcision (VMMC) promotion interventions for males in Bulawayo, Zimbabwe, consisting of a 60-minute interactive, soccer-themed educational session with follow-up behavioral and logistical reinforcement. Both interventions were led by circumcised male community leaders ("coaches") ages 18-30. "Make The Cut" (MTC) targeted adult males on soccer teams and "Make The Cut+" targeted boys in secondary schools...
October 1, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
Sabina Cauci, Cinzia Buligan, Micaela Marangone, Maria Pia Francescato
BACKGROUND: Oxidative stress in female athletes is understudied. We investigated oxidative stress in sportswomen of different disciplines according to combined oral contraceptive (OC) use and lifestyle/alimentary habits. METHODS: Italian sportswomen (n = 144; mean age 23.4 ± 4.2 years; body mass index 21.2 ± 2.2 kg m(-2); sport activity 9.2 ± 4.1 h week(-1)) were analyzed; 48 % were volleyball players, 12.5 % soccer players, 10.4 % track-and-field sports, and followed by other disciplines' athletes...
December 2016: Sports Medicine—Open
Charles H Tegeler, Catherine L Tegeler, Jared F Cook, Sung W Lee, Lee Gerdes, Hossam A Shaltout, Christopher M Miles, Sean L Simpson
BACKGROUND: Effective interventions are needed for individuals with persisting post-concussion symptoms. High-resolution, relational, resonance-based, electroencephalic mirroring (HIRREM®) is an allostatic, closed-loop, acoustic stimulation neurotechnology, designed to facilitate relaxation and self-optimization of neural oscillations. METHODS: Fifteen athletes (seven females, mean age 18.1 years, SD 2.6) with persisting post-concussion symptoms received 18.7 (SD 6...
December 2016: Sports Medicine—Open
C Steingröver, N Wattie, J Baker, J Schorer
BACKGROUND: Relative age effects (RAEs) typically favour older members within a cohort; however, research suggests that younger players may experience some long-term advantages, such as longer career length. The purposes of this study were to replicate previous findings on RAEs among National Hockey League (NHL) ice hockey players, National Basketball Association (NBA) basketball players and National Football League (NFL) football players and to investigate the influence of relative age on career length in all three sports...
December 2016: Sports Medicine—Open
Thomas Trojian, Pina Violano, Matthew Hall, Charles Duncan
BACKGROUND: Connecticut (CT) passed its original sport-related concussion (SRC) law (PA 10-62) in 2010. The law requires that a health-care professional evaluate high school athletes with concussion symptoms. The purpose of this study was to evaluate two level 1 Trauma Center Emergency Department (ED) records for SRC before and after the Connecticut Public Act (CT PA) 10-62 to determine if the law had an effect on the presentation to the ED of SRCs. METHODS: A retrospective analysis of two level 1 Trauma Center Emergency Departments database was performed...
December 2015: Injury Epidemiology
Stephanie Schoeppe, Corneel Vandelanotte, Elling Bere, Nanna Lien, Maïté Verloigne, Éva Kovács, Yannis Manios, Mona Bjelland, Frøydis Nordgård Vik, Wendy Van Lippevelde
BACKGROUND: Parents play an important role in modelling healthy behaviours to their children. This study investigated associations between parent and child physical activity and screen time behaviours across specific domains, including moderating effects by parent and child gender. METHOD: The sample comprised 3300 school children and 2933 parents participating in the UP4FUN project (mean ages: child 11.2 ± 0.8 years, mother 40.0 ± 4.9 years, father 43.4 ± 5...
October 15, 2016: European Journal of Public Health
Iman Dianat
OBJECTIVES: This study was conducted to determine the prevalence of musculoskeletal symptoms and associated risk factors among Iranian handicraft workers engaged in different hand sewing tasks. METHODS: Data were collected using questionnaires (including the Nordic Musculoskeletal Questionnaire) as well as direct observations of posture (using the Rapid Upper Limb Assessment [RULA] method) from 632 workers including carpet handicraft workers (n=222), textiles handicraft workers (n=209), and leather handicraft workers (n=201) in Tabriz, Iran...
September 30, 2016: Journal of Occupational Health
Ana Oliveira, Ângela Monteiro, Cristina Jácome, Vera Afreixo, Alda Marques
Group sports interventions have been developed to improve health-related physical fitness of overweight/obese youth. However, its benefits are not systematically documented. This study synthesizes the evidence about the effects of group sports on health-related physical fitness of overweight/obese youth. Pubmed, Web of Knowledge, Scopus, Medline, CINAHL, SportDiscus, and Academic Search Complete were searched in February 2016. Studies assessing the effects of group sports on body composition, cardiorespiratory endurance, muscle strength, flexibility, and neuromotor fitness of overweight/obese youth (aged <18 years) were included...
October 7, 2016: Scandinavian Journal of Medicine & Science in Sports
Michael J Ellis, Dean M Cordingley, Sara Vis, Karen M Reimer, Jeff Leiter, Kelly Russell
OBJECTIVE There were 2 objectives of this study. The first objective was to identify clinical variables associated with vestibulo-ocular dysfunction (VOD) detected at initial consultation among pediatric patients with acute sports-related concussion (SRC) and postconcussion syndrome (PCS). The second objective was to reexamine the prevalence of VOD in this clinical cohort and evaluate the effect of VOD on length of recovery and the development of PCS. METHODS A retrospective review was conducted for all patients with acute SRC and PCS who were evaluated at a pediatric multidisciplinary concussion program from September 2013 to May 2015...
September 30, 2016: Journal of Neurosurgery. Pediatrics
Rehana A Salam, Ahmed Arshad, Jai K Das, Marium Naveed Khan, Wajeeha Mahmood, Stephen B Freedman, Zulfiqar A Bhutta
Globally, every day, ∼2,300 children and adolescents succumb to unintentional injuries sustained from motor vehicle collisions, drowning, poisoning, falls, burns, and violence. The rate of deaths due to motor vehicle injuries in adolescents is 10.2 per 100,000 adolescents. We systematically reviewed published evidence to identify interventions to prevent unintentional injuries among adolescents aged 11-19 years. We defined unintentional injuries as a subset of injuries for which there was no evidence of predetermined intent, and the definition included motor vehicle injuries, suffocation, drowning, poisoning, burns, falls, and sports and recreation...
October 2016: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
Fernando Comba, Nicolás S Piuzzi, José Ignacio Oñativia, Gerardo Zanotti, Martín Buttaro, Francisco Piccaluga
BACKGROUND: Calcific deposits in tendon, muscles, and periarticular areas are very common. Heterotopic ossification of the rectus femoris (HORF) is a rare condition, and several theories exist regarding the etiopathogenesis, which appears to be multifactorial with traumatic, genetic, and local metabolic factors involved. Although HORF typically responds to nonoperative treatment, when this approach fails, endoscopic treatment is a minimally invasive technique to address the pathology...
September 2016: Orthopaedic Journal of Sports Medicine
Shane Malone, Kieran Collins
The current study examined the effect that game design modification, goal type and player numbers on the running performance and physiological demands of small-sided hurling games (SSG). Forty-eight hurling players (age 25.5 ± 3.2 years; height 178.9 ± 3.2 cm; body mass 78.5 ± 4.5 kg) performed four types of SSG (possession (P), normal play (NP), regular Goals (RG) and small goals (SG) in four-a-side, five-a-side and six-a-side formats. Heart rate (Polar Electro Oy, Kempele, Finland) and Global positioning system technology (VX Sport, 4-Hz, Lower Hutt, New Zealand) were used to analyse the physical and physiological differences between SSG...
September 6, 2016: Journal of Strength and Conditioning Research
Haley Petterson, Bernadette L Olson
: Clinical Scenario: Student athletes experience a variety of stressors from school and social activities, as well as the additional demands of sport participation. Mindfulness-based interventions can help increase mental awareness and acceptance, as well as mitigate negative thoughts and emotions. The use of mindfulness-based interventions may be beneficial for reducing thoughts of stress, injury reduction, and improving overall wellbeing. CLINICAL QUESTION: Does the use of mindfulness-based interventions for student-athletes aged 13-24 years reduce stress and injury as well as improve overall quality of life? SUMMARY OF FINDINGS: The literature was searched for studies that investigated the use of mindfulness-based strategies for student-athletes specifically for reducing stress and injury and/or improving quality of life...
August 24, 2016: Journal of Sport Rehabilitation
Carolyn A McCarty, Douglas Zatzick, Elizabeth Stein, Jin Wang, Robert Hilt, Frederick P Rivara
BACKGROUND AND OBJECTIVES: Postconcussive and co-occurring psychological symptoms are not uncommon after sports-related concussion and are associated with functional impairment and societal costs. There is no evidence-based treatment targeting postconcussive symptoms in children and adolescents. The goal of this study was to test a collaborative care intervention model with embedded cognitive-behavioral therapy, care management, and psychopharmacological consultation. We hypothesized that patients in collaborative care would demonstrate greater reductions in postconcussive, depressive, and anxiety symptoms and improvement in functioning over the course of 6 months, compared with usual care control...
September 13, 2016: Pediatrics
Dean Cordingley, Richard Girardin, Karen Reimer, Lesley Ritchie, Jeff Leiter, Kelly Russell, Michael J Ellis
OBJECTIVE The objectives of this study were 2-fold: 1) to evaluate the safety, tolerability, and clinical use of graded aerobic treadmill testing in pediatric patients with sports-related concussion (SRC), and 2) to evaluate the clinical outcomes of treatment with a submaximal aerobic exercise program in patients with physiological post-concussion disorder (PCD). METHODS The authors conducted a retrospective chart review of pediatric patients (age < 20 years) with SRC who were referred to a multidisciplinary pediatric concussion program and underwent graded aerobic treadmill testing between October 9, 2014, and February 11, 2016...
September 13, 2016: Journal of Neurosurgery. Pediatrics
Thomas Dos'Santos, Christopher Thomas, Paul A Jones, Paul Comfort
PURPOSE: The purpose of this study was to investigate the within-session reliability of bilateral and unilateral stance isometric mid-thigh pull (IMTP) force-time characteristics including peak force (PF), relative PF and impulse at time bands (0-100, 0-200, 0-250 and 0-300 ms); and to compare isometric force-time characteristics between right and left and dominant (D) and non-dominant (ND) limbs. METHODS: Professional male Rugby league and multi-sport collegiate male athletes (n=54, age 23...
September 6, 2016: International Journal of Sports Physiology and Performance
Çiğdem Bozkir, Ali Özer, Erkan Pehlivan
OBJECTIVE: The purpose of this study was to investigate the prevalence of obesity, and the risk factors associated with it, in physically disabled adults living in the city centre of Malatya, Turkey. METHOD: This research was designed as a cross-sectional study conducted on physically disabled people aged 20-65 years living in the city centre of Malatya. The prevalence of obesity in disabled people was within 95% CIs, the power was calculated as 80%, and the sample size of our population was calculated as 258 individuals...
2016: BMJ Open
Taye J Lasisi, Ade F Adeniyi
BACKGROUND: Saliva analysis is rapidly developing as a tool for the assessment of biomarkers of sports training. It remains poorly understood whether a short bout of sport training can alter some salivary immune biomarkers. AIM: To investigate the effect of acute exercise using football training session on salivary flow rate, salivary free Insulin-like Growth Factor-1 (IGF-1) and Interleukin 10 (IL-10). METHODS: Saliva samples were collected before and immediately after a football session...
June 2016: African Health Sciences
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