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Bruno Figueira, Bruno Gonçalves, Hugo Folgado, Nerijus Masiulis, Julio Calleja-González, Jaime Sampaio
The present study aims to identify the accuracy of the NBN23&reg; system, an indoor tracking system based on radio-frequency and standard Bluetooth Low Energy channels. Twelve capture tags were attached to a custom cart with fixed distances of 0.5, 1.0, 1.5, and 1.8 m. The cart was pushed along a predetermined course following the lines of a standard dimensions Basketball court. The course was performed at low speed (<10.0 km/h), medium speed (>10.0 km/h and <20.0 km/h) and high speed (>20.0 km/h)...
June 14, 2018: Sensors
Torey M Anderson, Kaitlynn L McKirgan, Jennifer D Hastings
Study design: The primary study design was a pretest and posttest study performed in a single session with subjects as their own control. We summarize three integrated and sequential studies. Objective: The objective of this study was to investigate whether commercially available cushioned shorts would add skin protection when used in adaptive sports equipment (AE). Setting: Community in Tacoma Washington, USA. Methods: TekScan Pressure Mapping System for recording average (AP) and peak (PP) seating pressures...
2018: Spinal Cord Series and Cases
Valentina Cavedon, Carlo Zancanaro, Chiara Milanese
Data on the physical and performance characteristics of female wheelchair basketball (WB) players are scarce. In several countries female WB players train and compete with male players on mixed teams due to the limited total population of players, which would otherwise lead to large territorial spread for each team. Any differences in terms of physical characteristics and/or WB skill proficiency between male and female WB players would be relevant to team performance in mixed teams. This work examined anthropometry, body composition, and performance in a set of sport-specific field tests in a sample of 13 female WB players representing about 40% of the eligible population in Italy across a range of functional point scores (Point)...
2018: Frontiers in Physiology
Jennifer A Hogg, Randy J Schmitz, Anh-Dung Nguyen, Sandra J Shultz
CONTEXT:   Greater passive hip range of motion (ROM) has been associated with greater dynamic knee valgus and thus the potential for increased risk of anterior cruciate ligament injuries. Normative data for passive hip ROM by sex are lacking. OBJECTIVE:   To establish and compare passive hip ROM values by sex and sport and to quantify side-to-side differences in internal-rotation ROM (ROMIR ), external-rotation ROM (ROMER ), and total ROM (ROMTOT ). DESIGN:   Cross-sectional study...
June 13, 2018: Journal of Athletic Training
Heather K Vincent, Kevin R Vincent
Lacrosse is a fast-paced game that incorporates elements from multiple sports, such as soccer, basketball, baseball, tennis, and hockey. The sport involves rapid changes of direction, endurance, sprinting, physical contact, rotational movement, passing, and shooting. Passing and shooting are further complicated by having a weighted object (ball) at the end of a long moment arm (crosse) which places increased stress on the body segments. Thus, it is important to properly prepare for sport participation by improving strength, endurance, and dynamic stability of the postural and core stability muscles...
June 2018: Current Sports Medicine Reports
Nezam Hasan, Shibili Nuhmani, Shaji J Kachanathu, Qassim I Muaidi
BACKGROUND: Shoulder internal rotation angular velocity at the time of ball release is a crucial factor deciding the ball velocity in throwing. Even though there are some studies conducted regarding the effectiveness of complex training on the lower limb, the researchers has not given much attention to the upper limb. OBJECTIVE: To investigate the efficacy of a complex training program combining plyometric and weight training on the angular velocity of shoulder with a program composed of only plyometric training or only weight training...
May 25, 2018: Journal of Back and Musculoskeletal Rehabilitation
Varol Onur Kayhan, Alison Watkins
This article proposes a novel approach, called data snapshots, to generate real-time probabilities of winning for National Basketball Association (NBA) teams while games are being played. The approach takes a snapshot from a live game, identifies historical games that have the same snapshot, and uses the outcomes of these games to calculate the winning probabilities of the teams in this game as the game is underway. Using data obtained from 20 seasons worth of NBA games, we build three models and compare their accuracies to a baseline accuracy...
June 8, 2018: Big Data
M K Rossi, K Pasanen, A Heinonen, G Myklebust, P Kannus, U M Kujala, K Tokola, J Parkkari
The aim of this study was to investigate the incidence of back pain in young basketball and floorball players under 21 years of age. The secondary aim was to examine risk factors especially for low back pain (LBP). Nine basketball and nine floorball teams (n=396) participated in this prospective follow-up study (2011-2014). Young athletes (mean age 15.8±1.9) performed physical tests and completed a questionnaire at baseline. The follow-up lasted one to three years per player. During the follow-up, back pain reported by the players was registered on a weekly basis and verified by a study physician...
June 8, 2018: Scandinavian Journal of Medicine & Science in Sports
Abigail C Bretzin, Tracey Covassin, Meghan E Fox, Kyle M Petit, Jennifer L Savage, Lauren F Walker, Daniel Gould
BACKGROUND: Sports-related concussion (SRC) injury rates are well established in collegiate athletics through epidemiological studies using the National Collegiate Athletic Association Injury Surveillance System. However, few studies have examined sex differences, time loss, and missed school days in high school athletes, especially at the state level. PURPOSE: To identify sex differences in the clinical incidence of SRCs, missed school days, and time loss in high school student-athletes...
June 1, 2018: American Journal of Sports Medicine
Mariëtte J J van Maarseveen, Raôul R D Oudejans
In this study, we examined the effects of a defender contesting jump shots on performance and gaze behaviors of basketball players taking jump shots. Thirteen skilled youth basketball players performed 48 shots from about 5 m from the basket; 24 uncontested and 24 contested. The participants wore mobile eye tracking glasses to measure their gaze behavior. As expected, an approaching defender trying to contest the shot led to significant changes in movement execution and gaze behavior including shorter shot execution time, longer jump time, longer ball flight time, later final fixation onset, and longer fixation on the defender...
2018: Frontiers in Psychology
Adrià Muntaner-Mas, Pere Palou, Francisco B Ortega, Josep Vidal-Conti
BACKGROUND: Low back pain (LBP) is one of the biggest health problems worldwide. OBJECTIVES: The purpose of this study was to investigate the association between sports participation (duration and type) and LBP related outcomes in childhood. METHODS: This cross-sectional study involved 5th and 6th grade primary school students. The final sample included 2,032 children aged 10-12 years old. Children completed a questionnaire about the prevalence of LBP and some LBP-related outcomes...
May 21, 2018: Journal of Back and Musculoskeletal Rehabilitation
Oluwatoyosi B A Owoeye, Luz M Palacios-Derflingher, Carolyn A Emery
OBJECTIVES: The primary objective of this study was to examine the effectiveness of a neuromuscular training (NMT) warm-up program in reducing the risk of ankle sprain injury (ASI) in youth soccer and basketball. The secondary objective included the evaluation of risk factors for ASI. STUDY DESIGN: Secondary analysis of pooled data from 5 studies. PARTICIPANTS: Male and female youth (11-18 years) soccer and basketball players (n = 2265) in Alberta, Canada...
June 29, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Alain Reinberg, Olivier Reinberg, Mohamed Mechkouri, Yvan Touitou, Michael H Smolensky
Details of serious injuries to children ≤16 yrs. of age that necessitated urgent surgical intervention by the Department of Pediatric Surgery of the University Hospital of Lausanne, Switzerland were recorded into a database registry. Some 15 110 entries listed the precise time of injury, and 3114 (20.6%) of these resulted from participating in sport-associated activities. Time-of-day, day-of-week and month-of-year differences in the total number of children's accidental sport injuries (CASI) were validated...
May 2018: Chronobiology International
Wei-Han Chen, Huey-June Wu, Shin-Liang Lo, Hui Chen, Wen-Wen Yang, Chen-Fu Huang, Chiang Liu
Chen, WH, Wu, HJ, Lo, SL, Chen, H, Yang, WW, Huang, CF, and Liu, C. Eight-week battle rope training improves multiple physical fitness dimensions and shooting accuracy in collegiate basketball players. J Strength Cond Res XX(X): 000-000, 2018-Basketball players must possess optimally developed physical fitness in multiple dimensions and shooting accuracy. This study investigated whether (battle rope [BR]) training enhances multiple physical fitness dimensions, including aerobic capacity (AC), upper-body anaerobic power (AnP), upper-body and lower-body power, agility, and core muscle endurance, and shooting accuracy in basketball players and compared its effects with those of regular training (shuttle run [SR])...
May 28, 2018: Journal of Strength and Conditioning Research
Jason A Grieshober, Nima Mehran, Christos Photopolous, Matthew Fishman, Stephen J Lombardo, F Daniel Kharrazi
Background: Vitamin D is believed to play a role in influencing fracture risk and athletic performance. Insufficiency of vitamin D affects an estimated three-quarters of the United States population. Hypovitaminosis D has also been demonstrated to be quite common among professional basketball players in the National Basketball Association (NBA). Purpose: To determine whether a relationship exists between vitamin D levels and fracture risk and athletic performance (as measured by NBA draft status) among elite basketball players...
May 2018: Orthopaedic Journal of Sports Medicine
Logan A Lucas, Benjamin S England, Travis W Mason, Christopher R Lanning, Taylor M Miller, Alexander M Morgan, Thomas G Almonroeder
Lower extremity musculoskeletal injuries are common in sports such as basketball and soccer. Athletes competing in sports of this nature must maneuver in response to the actions of their teammates, opponents, etc. This limits their ability to pre-plan movements. The purpose of this study was to compare impact accelerations during pre-planned vs. un-planned lateral cutting. Thirty subjects (15 males, 15 females) performed pre-planned and un-planned cuts while we analyzed impact accelerations using an accelerometer secured to their tibia...
May 29, 2018: Journal of Applied Biomechanics
Kym J Williams, Dale W Chapman, Elissa J Phillips, Nick Ball
PURPOSE: To establish the influence of athlete-dependent characteristics on the generation and timing of system and individual joint powers during a countermovement jump (CMJ). METHODS: Male national representative athletes from Volleyball ([VB] n=7), Basketball ([BB], n=6) and Rugby Union ([RU] n=7) performed a set of three CMJ's at relative barbell loads of 0, 10, 20, 30, and 40% of absolute back squat strength. Ground reaction forces and joint kinematics were captured using a 16 camera motion capture system integrated with two in-ground force plates...
May 29, 2018: International Journal of Sports Physiology and Performance
Z J Zhang, W C Lee, G Y F Ng, S N Fu
PURPOSE: This study aims to compare the isometric strength of hip abductors and external rotators in male athletes with and without patellar tendinopathy (PT), and to examine the correlation between hip strength, pain, and functional scores. METHODS: Sixty male athletes (30 with PT and 30 controls) were recruited from local volleyball and basketball teams. The isometric strength of the hip abductors and external rotators was quantified using a belt-stabilized handheld dynamometer...
May 26, 2018: European Journal of Applied Physiology
Sîan A Williams, Leo Ng, Nathan Stephens, Nardia Klem, Catherine Wild
OBJECTIVE: The aim of this study was to investigate the effects of ankle taping on ankle and knee joint biomechanics during cutting and rebound activities in females. DESIGN: Cross-sectional. SETTING: Laboratory. PARTICIPANTS: Twenty semi-professional female basketball players performed a cut and rebound task under two conditions (taped and no-tape). MAIN OUTCOME MEASURES: Kinematic and ground reaction force data were collected during the deceleration phase of each movement task...
April 8, 2018: Physical Therapy in Sport
Ashley Ploudre, Jana L Arabas, Liz Jorn, Jerry L Mayhew
Body composition assessment has become an integral part of athletes' training schedules. Questions remain concerning the accuracy of various methods to track body composition changes over a competitive year cycle. The purpose of this study was to compare various methods of tracking body composition across a college women's basketball season. Fourteen Division II women (age = 20.1 ± 1.2 y) were measured prior to the season (T1), after pre-season conditioning (T2), at mid-season (T3), and at the end of the season (T4) using skinfolds (SKF), two bioelectric impedance analysis (BIA) devices, and dual-energy x-ray absorptiometry (DXA)...
2018: International Journal of Exercise Science
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