Physical fitness is associated with better technical performance in adolescent alpine ski racers after controlling for practice time: A retrospective regression analysis.

abstract：UNLABELLED:The drop jump is a popular form of plyometric exercise often undertaken to enhance countermovement jump ability (jump height). Despite its popularity the effects of drop jump training on countermovement jump height are often inconsistent. Such inconsistencies may be as a result of differences in the drop jum...

journal_title：Journal of sports sciences

authors： Marshall BM,Moran KA

更新日期：2013-01-01 00:00:00

abstract：:The purpose of this study was to examine the variation in accumulated basketball training experience, body size, functional performance, deliberate practice motivation, achievement and competitiveness motivation and sources of enjoyment among young female basketball players, partitioning the potential variation by ind...

journal_title：Journal of sports sciences

authors： Soares ALA,Leonardi TJ,Silva J,Nascimento JV,Paes RR,Gonçalves CE,Carvalho HM

更新日期：2020-04-01 00:00:00

abstract：:The purpose of this study was to compare the kinetics, kinematics, and muscle activation patterns of the countermovement jump, the power clean, and the jump squat with the expectation of gaining a better understanding of the mechanism of transfer from the power clean to the vertical jump. Ground reaction forces, elect...

journal_title：Journal of sports sciences

authors： MacKenzie SJ,Lavers RJ,Wallace BB

更新日期：2014-01-01 00:00:00

abstract：:The aims in this review are: (1) to identify physiological determinants of performance; (2) to consider training specificity by examining aerobic, team and racket sports, strength and power activities, and cross-training and concurrent training methods; and (3) to evaluate the role of specificity in the physiological ...

journal_title：Journal of sports sciences

authors： Reilly T,Morris T,Whyte G

更新日期：2009-04-01 00:00:00

abstract：:While empirical evidence suggests that elite athletes have superior lifespan outcomes relative to the general population, less is known regarding their causes of death. The purpose of this study was to critically examine the mortality outcomes of deceased National Basketball Association and American Basketball Associa...

journal_title：Journal of sports sciences

authors： Lemez S,Wattie N,Lawler T,Baker J

更新日期：2018-07-01 00:00:00

abstract：:The aim of this study was to examine the effect of movement and stretching imagery on increases in flexibility. Thirty volunteers took part in a 4 week flexibility training programme. They were randomly assigned to one of three groups: (1) movement imagery, where participants imagined moving the limb they were stretch...

journal_title：Journal of sports sciences

authors： Vergeer I,Roberts J

更新日期：2006-02-01 00:00:00

abstract：INTRODUCTION:High-Intensity Interval Training (HIIT) and Constant-Intensity Endurance Training (CIET) improves peak oxygen uptake (V̇O2) similarly in adults; but in children this remains unclear, as does the influence of maturity. METHODS:Thirty-seven boys formed three groups: HIIT (football; n = 14; 14.3 ± 3.1 years)...

journal_title：Journal of sports sciences

authors： Runacres A,Mackintosh KA,McNarry MA

更新日期：2019-11-01 00:00:00

abstract：:A calibration study was conducted to determine the threshold counts for two commonly used accelerometers, the ActiGraph and the Actical, to classify activities by intensity in children 5 to 8 years of age. Thirty-three children wore both accelerometers and a COSMED portable metabolic system during 15 min of rest and t...

journal_title：Journal of sports sciences

authors： Evenson KR,Catellier DJ,Gill K,Ondrak KS,McMurray RG

更新日期：2008-12-01 00:00:00

abstract：:Drug abuse by adolescents has been investigated in various surveys that reported correlations between age, gender, and activity. However, none of these studies included chemical analyses to help substantiate the statements of participants. In the present study, the urine specimens of 964 students (439 females, 525 mal...

journal_title：Journal of sports sciences

authors： Thevis M,Sauer M,Geyer H,Sigmund G,Mareck U,Schänzer W

更新日期：2008-08-01 00:00:00

abstract：:The purpose of the present study was to analyse the variability in clubhead presentation to the ball and the resulting ball impact location on the club face for a range of golfers of different ability. A total of 285 male and female participants hit multiple shots using one of four proprietary drivers. Self-reported h...

journal_title：Journal of sports sciences

authors： Betzler NF,Monk SA,Wallace ES,Otto SR

更新日期：2012-01-01 00:00:00

abstract：:This study investigated psychosocial processes associated with avoidance of health- and morality-based deterrents to performance-enhancing drug (PED) use. In-depth semi-structured interviews were conducted with 64 English male bodybuilders with experience of doping. Resultant data were content analysed deductively usi...

journal_title：Journal of sports sciences

authors： Boardley ID,Grix J,Dewar AJ

更新日期：2014-01-01 00:00:00

abstract：:The aim of the study was to evaluate, by an electromyographic (EMG) and mechanomyographic (MMG) combined approach, whether years of specific climbing activity induced neuromuscular changes towards performances related to a functional prevalence of fast resistant or fast fatigable motor units. For this purpose, after t...

journal_title：Journal of sports sciences

authors： Limonta E,Cè E,Gobbo M,Veicsteinas A,Orizio C,Esposito F

更新日期：2016-01-01 00:00:00

abstract：:Body image is an important concept when assessing mental health and, thus, a target for intervention work. The common approach to assess body image is via self-report and, consequently, it is important to assess stability and susceptibility of items to random change. Participants (N = 99, aged: 18-30 years) completed ...

journal_title：Journal of sports sciences

authors： Nevill AM,Lane AM,Duncan MJ

更新日期：2015-01-01 00:00:00

abstract：:Maximal strength, power, muscle cross-sectional area, maximal and submaximal cycling endurance characteristics and serum hormone concentrations of testosterone, free testosterone and cortisol were examined in three groups of men: weightlifters (n = 11), amateur road cyclists (n = 18) and age-matched controls (n = 12)....

journal_title：Journal of sports sciences

authors： Izquierdo M,Ibáñez J,Häkkinen K,Kraemer WJ,Ruesta M,Gorostiaga EM

更新日期：2004-05-01 00:00:00

abstract：:The purpose of this study was to examine oxygen consumption (VO(2)) during and after a single bout of low-intensity resistance exercise with slow movement. Eleven healthy men performed the following three types of circuit resistance exercise on separate days: (1) low-intensity resistance exercise with slow movement: 5...

journal_title：Journal of sports sciences

authors： Mukaimoto T,Ohno M

更新日期：2012-01-01 00:00:00

abstract：:The yips is considered a task-specific movement disorder. Its estimated prevalence, however, is high compared to similar neurological movement disorders, possibly resulting from previous studies' restriction of samples based on skill level, and self-report bias. Alternatively, this high prevalence might be an indicati...

journal_title：Journal of sports sciences

authors： Klämpfl MK,Philippen PB,Lobinger BH

更新日期：2015-01-01 00:00:00

abstract：:Bioelectrical impedance spectroscopy (BIS) is an inexpensive and non-invasive technique to measure total body water (TBW), extracellular water (ECW), and intracellular water (ICW). The purpose of this study was to validate TBW, ECW and ICW assessed by BIS, using dilution techniques as the reference method (REF) in eli...

journal_title：Journal of sports sciences

authors： Gonçalves EM,Matias CN,Santos DA,Sardinha LB,Silva AM

更新日期：2015-01-01 00:00:00

abstract：:Coaches are central to talent development in youth soccer and what they say and do impacts on players' achievements and well-being. Researchers have systematically observed coach behaviour and practice activities within this setting (i.e. 'what coaches do'). We review this research in light of contemporary discussion ...

journal_title：Journal of sports sciences

authors： Cushion C,Ford PR,Williams AM

更新日期：2012-01-01 00:00:00

abstract：:In order to investigate the effect of playing styles on the match performance of football teams, data were analysed on 18 technical performance-related variables and 8 physical performance-related variables from 59 matches in the 2018 FIFA World Cup. A k-means cluster analysis was conducted to classify all match obser...

journal_title：Journal of sports sciences

authors： Yi Q,Gómez MA,Wang L,Huang G,Zhang H,Liu H

更新日期：2019-11-01 00:00:00

abstract：:The length of telomeres is an objective measure of biologic ageing. This study evaluated the extent minutes of walking per week are associated with leukocyte telomere length (LTL) in a random sample of 5,823 U.S. adults. The investigation was cross-sectional and data were obtained from the National Health and Nutritio...

journal_title：Journal of sports sciences

authors： Tucker LA

更新日期：2020-05-01 00:00:00

abstract：:The use of dieting, rapid weight loss, and frequent weight fluctuation among athletes competing in weight-class and leanness sports have been considered a problem for years, but the extent of the problem and the health and performance consequences have yet to be fully examined. Most studies examining these issues have...

journal_title：Journal of sports sciences

authors： Sundgot-Borgen J,Garthe I

更新日期：2011-01-01 00:00:00

abstract：:Veteran football players above 40 years have rarely been subject to scientific investigations. This is worrisome because their number is considerable and their cardiovascular risk probably increased. Therefore, a cross-sectional study was conducted in 100 football players between 40 and 63 years of age. This included ...

journal_title：Journal of sports sciences

authors： Wegmann M,Steffen A,Pütz K,Würtz N,Such U,Faude O,Bohm P,Meyer T

更新日期：2016-01-01 00:00:00

abstract：:Youth athletes are known to be at high risk of musculoskeletal (MSK) injuries. Children in developed countries are increasingly adopting a sedentary lifestyle. Although some risk factors related to sports activities have been reported, the effect of lifestyle (i.e. screen time behaviour) on MSK pain in youth athletes ...

journal_title：Journal of sports sciences

authors： Sekiguchi T,Hagiwara Y,Momma H,Tsuchiya M,Kuroki K,Kanazawa K,Yabe Y,Yoshida S,Koide M,Itaya N,Itoi E,Nagatomi R

更新日期：2018-08-01 00:00:00

abstract：:In the present study, we examined the independent and combined effects of an inspiratory muscle warm-up and inspiratory muscle training on intermittent running to exhaustion. Twelve males were recruited to undertake four experimental trials. Two trials (Trials 1 and 2) preceded either a 4-week training period of 1 × 3...

journal_title：Journal of sports sciences

authors： Lomax M,Grant I,Corbett J

更新日期：2011-03-01 00:00:00

abstract：:The relationships between team performance indicators and match outcome have been examined in many team sports, however are limited in Australian Rules football. Using data from the 2013 and 2014 Australian Football League (AFL) regular seasons, this study assessed the ability of commonly reported discrete team perfor...

journal_title：Journal of sports sciences

authors： Robertson S,Back N,Bartlett JD

更新日期：2016-01-01 00:00:00

abstract：:The cognitive effects of acute aerobic exercise were investigated in endurance-trained individuals. On two occasions, 21 cyclists; 11 male (VO2max: 57 ± 9 mL·kg-1·min-1) and 10 female (VO2max: 51 ± 9 mL·kg-1·min-1), completed 45 min of fixed, moderate-intensity (discontinuous) cycling followed by an incremental ride t...

journal_title：Journal of sports sciences

authors： McCartney D,Desbrow B,Irwin C

更新日期：2021-01-01 00:00:00

abstract：:This study aimed to investigate why futsal players decide to dribble. For this purpose, we analysed 396 trials comprising the dribbles (n = 132), passes (n = 131) or shots (n = 133), performed by 70 male futsal players. Passing and shooting angles, and interpersonal distance, including their rates of change (velocity ...

journal_title：Journal of sports sciences

authors： Corrêa UC,de Pinho ST,da Silva SL,Clavijo FA,Souza TO,Tani G

更新日期：2016-12-01 00:00:00

abstract：:This study investigated the influence of the regression model and initial intensity during an incremental test on the relationship between the lactate threshold estimated by the maximal-deviation method and performance in elite-standard runners. Twenty-three well-trained runners completed a discontinuous incremental r...

journal_title：Journal of sports sciences

authors： Santos-Concejero J,Tucker R,Granados C,Irazusta J,Bidaurrazaga-Letona I,Zabala-Lili J,Gil SM

更新日期：2014-01-01 00:00:00

abstract：:This study examined the changes in running performance, maximal blood lactate concentrations and running kinematics between 85%BM anti-gravity (AG) running and normal over-ground (OG) running over an 8-week training period. Fifteen elite male developmental cricketers were assigned to either the AG or over-ground (CON)...

journal_title：Journal of sports sciences

authors： Brennan CT,Jenkins DG,Osborne MA,Oyewale M,Kelly VG

更新日期：2018-10-01 00:00:00

abstract：:The aim of the current study was to establish which indicators of mobility are associated with successful wheelchair rugby performance and determine whether these indicators differed across classification. Data were collected from 11 international teams during 30 matches (353 match observations) using a radio-frequenc...

journal_title：Journal of sports sciences

authors： Rhodes JM,Mason BS,Malone LA,Goosey-Tolfrey VL

更新日期：2015-01-01 00:00:00