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https://www.readbyqxmd.com/read/29676222/clustering-performances-in-the-nba-according-to-players-anthropometric-attributes-and-playing-experience
#1
Shaoliang Zhang, Alberto Lorenzo, Miguel-Angel Gómez, Nuno Mateus, Bruno Gonçalves, Jaime Sampaio
The aim of this study was: (i) to group basketball players into similar clusters based on a combination of anthropometric characteristics and playing experience; and (ii) explore the distribution of players (included starters and non-starters) from different levels of teams within the obtained clusters. The game-related statistics from 699 regular season balanced games were analyzed using a two-step cluster model and a discriminant analysis. The clustering process allowed identifying five different player profiles: Top height and weight (HW) with low experience, TopHW-LowE; Middle HW with middle experience, MiddleHW-MiddleE; Middle HW with top experience, MiddleHW-TopE; Low HW with low experience, LowHW-LowE; Low HW with middle experience, LowHW-MiddleE...
April 20, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29671383/sport-specific-biomechanical-responses-to-an-acl-injury-prevention-programme-a-randomised-controlled-trial
#2
Jeffrey B Taylor, Kevin R Ford, Randy J Schmitz, Scott E Ross, Terry A Ackerman, Sandra J Shultz
Anterior cruciate ligament (ACL) injury prevention programmes have not been as successful at reducing injury rates in women's basketball as in soccer. This randomised controlled trial (ClinicalTrials.gov #NCT02530333) compared biomechanical adaptations in basketball and soccer players during jump-landing activities after an ACL injury prevention programme. Eighty-seven athletes were cluster randomised into intervention (6-week programme) and control groups. Three-dimensional biomechanical analyses of drop vertical jump (DVJ), double- (SAG-DL) and single-leg (SAG-SL) sagittal, and double- (FRONT-DL) and single-leg (FRONT-SL) frontal plane jump landing tasks were tested before and after the intervention...
April 19, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29668752/the-cyp1a2-163c-a-polymorphism-does-not-alter-the-effects-of-caffeine-on-basketball-performance
#3
Carlos Puente, Javier Abián-Vicén, Juan Del Coso, Beatriz Lara, Juan José Salinero
PURPOSE: The aim of this investigation was to analyze the influence of the genetic variations of the -163C>A polymorphism of the CYP1A2 gene on the ergogenic effects of caffeine in elite basketball players. METHODS: Nineteen elite basketball players (10 men and 9 women) ingested 3 mg⋅kg-1 of caffeine or a placebo 60 min before performing 10 repetitions of the following series: the Abalakov jump test followed by the Change-of-Direction and Acceleration Test (CODAT)...
2018: PloS One
https://www.readbyqxmd.com/read/29664877/juvenile-osteochondritis-dissecans-of-the-trochlea-a-cohort-study-of-34-trochlear-lesions-associated-with-sporting-activities-that-load-the-patellofemoral-joint
#4
Meghan J Price, Maria Tuca, Joseph Nguyen, Jason Silberman, Eva Luderowski, Tyler J Uppstrom, Daniel W Green
BACKGROUND: Juvenile osteochondritis dissecans (JOCD) lesions are rarely located in the trochlea and few studies have focused on the causes and outcomes of JOCD lesions in this part of the knee. The purpose of this study is to (1) evaluate the clinical characteristics and outcomes of patients who undergo surgery for JOCD in this unusual location as well as (2) assess the association between trochlear JOCD and participation in sporting activities that load the patellofemoral joint. METHODS: We conducted a retrospective cohort study of 34 trochlear JOCD lesions in 30 patients...
April 16, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29662456/dynamic-regulation-of-circulating-micrornas-during-acute-exercise-and-long-term-exercise-training-in-basketball-athletes
#5
Yongqin Li, Mengchao Yao, Qiulian Zhou, Yan Cheng, Lin Che, Jiahong Xu, Junjie Xiao, Zhongming Shen, Yihua Bei
Emerging evidence indicates the beneficial effects of physical exercise on human health, which depends on the intensity, training time, exercise type, environmental factors, and the personal health status. Conventional biomarkers provide limited insight into the exercise-induced adaptive processes. Circulating microRNAs (miRNAs, miRs) are dynamically regulated in response to acute exhaustive exercise and sustained rowing, running and cycling exercises. However, circulating miRNAs in response to long-term basketball exercise remains unknown...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29649012/clinical-improvements-are-not-explained-by-changes-in-tendon-structure-on-utc-following-an-exercise-program-for-patellar-tendinopathy
#6
Mathijs van Ark, Ebonie Rio, Jill Cook, Inge van den Akker-Scheek, James E Gaida, Johannes Zwerver, Sean Docking
OBJECTIVES: The aim of this study was to investigate the effects of a 4-week in-season exercise program of isometric or isotonic exercises on tendon structure and dimensions as quantified by Ultrasound Tissue Characterization (UTC). DESIGN: Randomized clinical trial. Volleyball and basketball players (16-31 years, n=29) with clinically diagnosed patellar tendinopathy were randomized to a 4-week isometric or isotonic exercise program. The programs were designed to decrease patellar tendon pain...
April 11, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29623750/considerations-in-the-diagnosis-and-accelerated-return-to-sport-of-a-professional-basketball-player-with-a-triceps-surae-injury-a-case-report
#7
Philip A Anloague, Donald S Strack
Study Design Case report. Background Acute injuries of the triceps surae and Achilles tendon are common in sports. Rupture of the plantaris tendon can be challenging to diagnose. There is limited evidence detailing the diagnosis, rehabilitation, and accelerated return to sport of elite professional basketball players who have suffered calf injuries. Case Description A 25-year-old male professional basketball player sustained injury to his calf during a professional basketball game. This case report details the presumptive diagnosis, graduated progression of intervention, and return to play of a professional sports person with a likely isolated plantaris tendon tear...
April 6, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29621113/a-repeated-power-training-enhances-fatigue-resistance-while-reducing-intraset-fluctuations
#8
Oliver Gonzalo-Skok, Julio Tous-Fajardo, Gerard Moras, José Luis Arjol-Serrano, Alberto Mendez-Villanueva
Oliver, GS, Julio, TF, Moras, G, José Luis, AS, and Alberto, MV. A repeated power training enhances fatigue resistance while reducing intraset fluctuations. J Strength Cond Res XX(X): 000-000, 2018-The present study analyzed the effects of adding an upper-body repeated power ability (RPA) training to habitual strength training sessions. Twenty young elite male basketball players were randomly allocated into a control group (CON, n = 10) or repeated power group (RPG, n = 10) and evaluated by 1 repetition maximum (1RM), incremental load, and RPA tests in the bench press exercise before and after a 7-week period and a 4-week cessation period...
April 4, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29620577/methods-of-identifying-limb-dominance-in-adolescent-female-basketball-players-implications-for-clinical-and-biomechanical-research
#9
Colleen R Mulrey, Sandra J Shultz, Kevin R Ford, Anh-Dung Nguyen, Jeffrey B Taylor
OBJECTIVE: To identify relationships between self-reported limb preferences and performance measures for determining limb dominance in adolescent female basketball players. DESIGN: Cross-sectional cohort study. PARTICIPANTS: Forty adolescent female basketball players. INDEPENDENT VARIABLES AND MAIN OUTCOME MEASURES: Participants provided self-reported preferred kicking and jumping limbs, then completed 3 trials of a single-limb countermovement hop (HOPVER) and unilateral triple hop for distance (HOPHOR) on each limb...
March 29, 2018: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29609946/exercise-induced-cardiac-remodeling-in-athletes-and-in-special-forces-soldiers
#10
Paulo Dinis, Rogério Teixeira, Hélder Dores, Pedro Correia, Hanna Lekedal, Marie Bergman, Maria Carmo Cachulo, Joaquim Cardoso, Lino Gonçalves
INTRODUCTION: Exercise-induced cardiac remodeling is frequent in athletes. This adaptation is structurally manifested by an increase in cardiac dimensions and mass. Soldiers are also subject to intense physical exercise, although with different characteristics. OBJECTIVE: To compare exercise-induced cardiac remodeling in competitive athletes and in soldiers on a special forces training course. METHODS: We studied 17 soldiers (all male and Caucasian, mean age 21±3 years) who completed a special forces course and 17 basketball players (47...
March 30, 2018: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29599877/motivational-climate-sport-youth-scale-measurement-invariance-across-gender-and-five-different-sports
#11
Diogo Monteiro, Carla Chicau Borrego, Carlos Silva, João Moutão, Daniel Almeida Marinho, Luís Cid
The aim of this study was to analyze the psychometric properties of the Portuguese version of the Motivational Climate Sport Youth Scale (MCSYSp) and invariance across gender and different sports (swimming, soccer, handball, basketball, futsal). A total of 4,569 athletes (3,053 males, 1,516 females) from soccer (1,098), swimming (1,049), basketball (1,754), futsal (340), and handball (328) participated in this study, with ages between 10 and 20 years (M = 15.13; SD = 1.95). The results show that the original model (two factors/12 items) did not adjust to the data in a satisfactory way; therefore, it was necessary to change the model by removing four items (two from each factor)...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29599859/functional-movements-in-japanese-mini-basketball-players
#12
Kenji Kuzuhara, Masashi Shibata, Junta Iguchi, Ryo Uchida
Functional movement screen (FMS) has been used to establish normative data and determine potential injury risk for young adults and athletes, but there are few data in elementary school-age children. The purpose of this study was to establish fundamental values for the FMS in elementary school-age mini-basketball players. Secondary purposes were to examine relationships between functional movement patterns and age, peak height velocity (PHV), and body mass index (BMI), and to compare functional movement patterns between boys and girls and between individuals with and without a history of injury...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29594958/change-of-direction-speed-toward-a-strength-training-approach-with-accentuated-eccentric-muscle-actions
#13
Helmi Chaabene, Olaf Prieske, Yassine Negra, Urs Granacher
There is growing evidence that eccentric strength training appears to have benefits over traditional strength training (i.e., strength training with combined concentric and eccentric muscle actions) from muscular, neuromuscular, tendinous, and metabolic perspectives. Eccentric muscle strength is particularly needed to decelerate and stabilize the body during the braking phase of a jump exercise or during rapid changes of direction (CoD) tasks. However, surprisingly little research has been conducted to elucidate the effects of eccentric strength training or strength training with accentuated eccentric muscle actions on CoD speed performance...
March 28, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29589409/physical-fitness-characteristics-of-omani-primary-school-children-according-to-body-mass-index
#14
Anne Delextrat, Lawrence Hayes, Samia S Al Ghannami, Yoeju Ming, Izzeldin Hussein, Hamed Al Oufi, Daniel D Cohen, Kebreab Ghebremeskel
BACKGROUND: There is evidence that children with high cardiorespiratory fitness and normal body mass index (BMI) have less risk of non communicable diseases (NCDs), however limited research was undertaken in Omani children. Therefore the aims of the present study were to describe body composition and physical fitness of a large cohort of Omani school children of both genders, and to investigate the effects of weight status on physical fitness. METHODS: Three hundred and fourteen Omani school children aged 9 to 10 years old took part in anthropometric assessments, body composition and fitness tests, including handgrip strength, the basketball chest pass, broad jump, 20-m sprint, four 10-m shuttle agility, 30-s sit-up, and multistage fitness test (MSFT)...
March 27, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29589166/evidence-of-skill-and-strategy-in-daily-fantasy-basketball
#15
Brent A Evans, Justin Roush, Joshua D Pitts, Adam Hornby
Using hand-collected data from DraftKings.com, a major daily fantasy sports website, we analyze draft selections of thousands of participants in daily fantasy basketball (DFB). In our study, the first thorough examination of DFB, we show that DFB is a game in which skill is necessary for success. Using econometric analysis, we find that winning participants utilize different strategies than losing participants; for example, winning participants more frequently select NBA rookies and international players. We also find that participants paying to enter more lineups in a given contest earn profits far more often than those entering few lineups, indicating that the number of lineups entered can serve as a proxy for skill...
March 27, 2018: Journal of Gambling Studies
https://www.readbyqxmd.com/read/29584513/3x3-basketball-inertial-movement-and-physiological-demands-during-elite-games
#16
Paul G Montgomery, Brendan D Maloney
PURPOSE: To determine the demands of elite male and female 3x3 basketball games, and compare these between various competition levels. METHODS: 361 males and 208 females competing in the under 18 World Championships, Senior European and World Championships, and selected professional tournaments had game demands assessed by wearable technology (GPS, inertial measurement, heart rate) along with post game blood lactate and perceived responses. Differences in the means were compared using magnitude based inferences and reported with Effect Size and 90% confidence limits, along with the percentage difference (ES; ±90%CL, %) of log-transformed data...
March 27, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29570599/increased-leg-bone-mineral-density-and-content-during-the-initial-years-of-college-sport
#17
John J Scerpella, Bjoern Buehring, Scott J Hetzel, Bryan C Heiderscheit
Scerpella, JJ, Buehring, B, Hetzel, SJ, and Heiderscheit, BC. Increased leg bone mineral density and content during the initial years of college sport. J Strength Cond Res 32(4): 1123-1130, 2018-Bone mineral density (BMD) and bone mineral content (BMC) data are useful parameters for evaluating how training practices promote bone health. We used dual-energy X-ray absorptiometry (DXA) to longitudinally assess sport-specific growth in leg and total body BMD/BMC over the initial 2 years of collegiate training. Eighty-five Division 1 collegiate basketball, hockey, and soccer athletes (50 males and 35 females; age 19...
April 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29550753/return-to-pivoting-sport-after-acl-reconstruction-association-with-osteoarthritis-and-knee-function-at-the-15-year-follow-up
#18
Britt Elin Øiestad, Inger Holm, May Arna Risberg
OBJECTIVES: To examine the associations between return to pivoting sport following ACL reconstruction (ACLR) and knee osteoarthritis (OA), and self-reported knee symptoms, function and quality of life after 15 years. METHODS: Study sample included 258 participants with ACLR 15 years previously. Return to pivoting sport (handball, soccer and basketball) data were collected by interviews, and symptomatic OA was defined as Kellgren and Lawrence grade ≥2 plus almost daily knee pain in the last month...
March 17, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29541343/evaluating-energy-expenditure-estimated-by-wearable-technology-during-variable-intensity-activity-on-female-collegiate-athletes
#19
Monica Taylor, Elizabeth F Nagle, Fredric L Goss, Elaine N Rubinstein, Andrew Simonson
Monitoring an athlete's energy intake and energy expenditure (EE) is an important consideration of nutritional planning for sport conditioning and peak performance. In order to provide appropriate recommendations regarding nutritional requirements and caloric needs, an accurate determination of energy requirements is necessary. By knowing an individual's EE, a coach, athletic performance staff or trainer can effectively determine training loads and volumes necessary for periodization and seasonal planning for a particular sport...
2018: International Journal of Exercise Science
https://www.readbyqxmd.com/read/29540107/interdependent-tripartite-efficacy-perceptions-and-individual-performance-case-study-of-a-boys-basketball-team
#20
Joseph M Stonecypher, Lindsey C Blom, James E Johnson, Jocelyn H Bolin, Robert C Hilliard
Tripartite efficacy refers to the beliefs of the individuals within a dyad regarding personal abilities (self-efficacy), the partner's abilities (other-efficacy), or relation-inferred self-efficacy. This efficacy model has recently gained popularity in sports research (Jackson, Whipp, & Beauchamp, 2013), although there has not been any longitudinal research on efficacy beliefs and performance within this complex intra-dyad tripartite efficacy model. In a case study, we examined six individual players on a high school basketball team to explore any longitudinal changes in these tripartite efficacy beliefs through a season of play...
January 1, 2018: Psychological Reports
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