Global self-esteem, goal achievement orientations, and self-determined behavioural regulations in a physical education setting.

abstract：:We compared starters and non-starters for various isokinetic strength variables in elite women's soccer players. A convenience sample of 10 starters (mean ± s; age = 20 ± 2 years; height = 170 ± 4 cm; body mass = 65 ± 5 kg) and 7 non-starters (age = 20 ± 1 years; height = 164 ± 3 cm; body mass = 63 ± 4 kg) performed m...

journal_title：Journal of sports sciences

authors： Jenkins ND,Hawkey MJ,Costa PB,Fiddler RE,Thompson BJ,Ryan ED,Smith D,Sobolewski EJ,Conchola EC,Akehi K,Cramer JT

更新日期：2013-01-01 00:00:00

abstract：:The purpose of this study was to determine the effects of training change-of-direction speed and small-sided games on performance in the Planned-AFL agility test and reactive agility. Twenty-five elite-standard U-18 Australian Rules football players were randomly allocated either to a change-of-direction group or a sm...

journal_title：Journal of sports sciences

authors： Young W,Rogers N

更新日期：2014-01-01 00:00:00

abstract：:Despite an increase in anterior knee laxity (AKL) during the adolescent growth spurt in girls, it is unknown whether landing biomechanics are affected by this change. This study investigated whether pubescent girls with higher AKL displayed differences in their lower limb strength or landing biomechanics when performi...

journal_title：Journal of sports sciences

authors： Wild CY,Munro BJ,Steele JR

更新日期：2017-01-01 00:00:00

abstract：:The aim of this study is to examine the prevalence and correlates of adolescents' resistance training (RT) skill competence. Participants were 548 adolescents (14.1 ± 0.5 years) from 16 schools in New South Wales, Australia. RT skills were assessed using the Resistance Training Skills Battery. Demographics, BMI, muscu...

journal_title：Journal of sports sciences

authors： Smith JJ,DeMarco M,Kennedy SG,Kelson M,Barnett LM,Faigenbaum AD,Lubans DR

更新日期：2018-06-01 00:00:00

abstract：:Knowledge of the kinematic differences that separate highly skilled and less-skilled squash players could assist the progression of talent development. This study compared trunk, upper-limb and racket kinematics between two groups of nine highly skilled and less-skilled male athletes for forehand drive, volley and dro...

journal_title：Journal of sports sciences

authors： Williams BK,Sanders RH,Ryu JH,Graham-Smith P,Sinclair PJ

更新日期：2020-07-01 00:00:00

abstract：:A maximal multistage 20 m shuttle run test was designed to determine the maximal aerobic power of schoolchildren, healthy adults attending fitness class and athletes performing in sports with frequent stops and starts (e.g. basketball, fencing and so on). Subjects run back and forth on a 20 m course and must touch the...

journal_title：Journal of sports sciences

authors： Léger LA,Mercier D,Gadoury C,Lambert J

更新日期：1988-07-01 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：:The rules of competitive boardsailing events were changed before the Atlanta Olympic Games. Pumping the sail (pulling repeatedly on the rig) is now allowed and the duration of races has been shortened. Eight members of the French national team (mean age 23+/-2.7 years) participated in this study. Their cardiac and met...

journal_title：Journal of sports sciences

authors： Guével A,Maïsetti O,Prou E,Dubois JJ,Marini JF

更新日期：1999-02-01 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 the study was to examine the health effects of 8 weeks of recreational badminton in untrained women. Participants were matched for maximal oxygen uptake (V̇O2max) and body fat percentage and assigned to either a badminton (n = 14), running (n = 14) or control group (n = 8). Assessments were conducted pr...

journal_title：Journal of sports sciences

authors： Patterson S,Pattison J,Legg H,Gibson AM,Brown N

更新日期：2017-06-01 00:00:00

abstract：:The purpose of this study was to determine the effects of the simultaneous use of pyridoxine-alpha-ketoglutarate (PAK) and sodium bicarbonate (NaHCO3) on short-term maximal exercise capacity in eight well-trained male cyclists. The study consisted of the determination of maximal power output and the administration of ...

journal_title：Journal of sports sciences

authors： Linderman J,Kirk L,Musselman J,Dolinar B,Fahey TD

更新日期：1992-06-01 00:00:00

abstract：:Sprint performance over short distances is a central component in young tennis players' development. This study aimed to examine the longitudinal development of sprint performance in young female tennis players, and to investigate differences between performance levels. Also potentially explanatory variables were inve...

journal_title：Journal of sports sciences

authors： Kramer T,Valente-Dos-Santos J,Visscher C,Coelho-E-Silva M,Huijgen BCH,Elferink-Gemser MT

更新日期：2021-02-01 00:00:00

abstract：:Composite materials have given manufacturers the freedom to develop a broad range of tennis rackets, allowing them to change key parameters such as the structural stiffness, mass, and position of the balance point. The aim of this research was to determine how changing these parameters could affect ball resultant rebo...

journal_title：Journal of sports sciences

authors： Allen TB,Haake SJ,Goodwill SR

更新日期：2011-02-01 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

abstract：:At the beginning of the twenty-first century, there are 30,000 golf courses and 55 million people who play golf worldwide. In the USA alone, the value of golf club memberships sold in the 1990s was US dollar 3.2 billion. Underpinning this significant human activity is a wide variety of people researching and applying ...

journal_title：Journal of sports sciences

authors： Farrally MR,Cochran AJ,Crews DJ,Hurdzan MJ,Price RJ,Snow JT,Thomas PR

更新日期：2003-09-01 00:00:00

abstract：:The aim of this study was to investigate the physical demands of international rugby union. Five games in the 1989-90 Five Nations Championship were analysed using video-recordings of live television transmissions. When the ball was in open play, the average running pace of players central to the action ranged from 5 ...

journal_title：Journal of sports sciences

authors： McLean DA

更新日期：1992-06-01 00:00:00

abstract：:The aims of this study were to examine the effect of different environmental constraints on kinematic multi-segment coordination patterns during the service and its coordination with service time variability. Ten expert tennis players (Age: 34.1 ± 5.3) volunteered to take part in this study. Participants served 30 tim...

journal_title：Journal of sports sciences

authors： Shafizadeh M,Bonner S,Fraser J,Barnes A

更新日期：2019-05-01 00:00:00

abstract：:The main purposes of this study were to investigate the acute effects of static and dynamic lower limb stretching routines: (a) on peak torque, total external work and joint angle at peak torque of the hamstrings during maximal eccentric isokinetic leg flexion; (b) on unilateral hamstring to quadriceps (H/Q) strength ...

journal_title：Journal of sports sciences

authors： Ayala F,De Ste Croix M,Sainz De Baranda P,Santonja F

更新日期：2013-01-01 00:00:00

abstract：:Nine male triathletes were studied during 160 min of exercise at 65% VO2 max on two occasions to examine the effect of glucose polymer ingestion on energy and fluid balance. During one trial they received 200 ml of a 10% glucose polymer solution at 20 min intervals during exercise (CHO), while in the other they receiv...

journal_title：Journal of sports sciences

authors： Kingwell B,McKenna MJ,Sandstrom ER,Hargreaves M

更新日期：1989-04-01 00:00:00

abstract：:The aim of this study was to assess the effects of nicotinamide adenine dinucleotide hydride (NADH) on maximal oxygen uptake (VO2max), maximal anaerobic running time, and mental performance. Eight men were exposed to a supplement treatment (30 mg NADH as ENACHI tablets per day) and to a placebo treatment, each of 4 we...

journal_title：Journal of sports sciences

authors： Mero A,Raitanen R,Birkmayer J,Komi P

更新日期：2008-02-01 00:00:00

abstract：:The main purpose of this study was to compare the effects of resistance training (RT) performed with different training volumes on phase angle (PhA), body water components, and muscle quality (MQ) in untrained older adult women. A second purpose was to assess the relationship between PhA and MQ. Sixty-two older adult ...

journal_title：Journal of sports sciences

authors： Cunha PM,Tomeleri CM,Nascimento MAD,Nunes JP,Antunes M,Nabuco HCG,Quadros Y,Cavalcante EF,Mayhew JL,Sardinha LB,Cyrino ES

更新日期：2018-12-01 00:00:00

abstract：:Ubiquitous (pervasive) computing is a term for a synergetic use of sensing, communication and computing. Pervasive use of computing has seen a rapid increase in the current decade. This development has propagated in applied sport science and everyday life. The work presents a survey of recent developments in sport and...

journal_title：Journal of sports sciences

authors： Baca A,Dabnichki P,Heller M,Kornfeind P

更新日期：2009-10-01 00:00:00

abstract：:Protease supplementation has been shown to attenuate soft tissue injury resulting from intense exercise. The aim of this study was to evaluate the effects of protease supplementation on muscle soreness and contractile performance after downhill running. Ten matched pairs of male participants ran at a -10% grade for 30...

journal_title：Journal of sports sciences

authors： Miller PC,Bailey SP,Barnes ME,Derr SJ,Hall EE

更新日期：2004-04-01 00:00:00

abstract：:The aim of the present study was to examine reliability and construct convergent validity of Player Load™ (PL) from trunk-mounted accelerometry, expressed as a cumulative measure and an intensity measure (PL · min-1). Fifteen male participants twice performed an overground football match simulation that included four ...

journal_title：Journal of sports sciences

authors： Barreira P,Robinson MA,Drust B,Nedergaard N,Raja Azidin RMF,Vanrenterghem J

更新日期：2017-09-01 00:00:00

abstract：:This study used a quasi-applied research model to identify and develop potentially talented female soccer players. Athletes aged 15-19 years with a background in team ball sports or athletics were targeted for recruitment using advertisements and promotions through various media. Interested athletes attended a 2-day p...

journal_title：Journal of sports sciences

authors： Hoare DG,Warr CR

更新日期：2000-09-01 00:00:00

abstract：:The aims of this study were to compare the physiological and anthropometric characteristics of successful mountain bikers and professional road cyclists and to re-examine the power-to-weight characteristics of internationally competitive mountain bikers. Internationally competitive cyclists (seven mountain bikers and ...

journal_title：Journal of sports sciences

authors： Lee H,Martin DT,Anson JM,Grundy D,Hahn AG

更新日期：2002-12-01 00:00:00

abstract：:The spirit of sport, which encompasses intrinsic values associated with sport participation, is core to the World Anti-Doping Agency's (WADA) strategy for doping prevention. The contribution of these values to clean sport has yet to be established. In this study, athletes rated the importance of spirit of sport values...

journal_title：Journal of sports sciences

authors： Mortimer H,Whitehead J,Kavussanu M,Gürpınar B,Ring C

更新日期：2020-10-22 00:00:00

abstract：:Recent research has challenged the typical pre-match and half-time (HT) interval warm-up (WU) routines currently used by professional soccer players. This study surveyed 2010/11 season WU strategies and their underpinning scientific reasoning and situational factors via an internet-based questionnaire, which was distr...

journal_title：Journal of sports sciences

authors： Towlson C,Midgley AW,Lovell R

更新日期：2013-01-01 00:00:00

abstract：:In order to measure active drag during front crawl swimming a system has been designed, built and tested. A tube (23 m long) with grips is fixed under the water surface and the swimmer crawls on this. At one end of the tube, a force transducer is attached to the wall of the swimming pool. It measures the momentary eff...

journal_title：Journal of sports sciences

authors： Hollander AP,De Groot G,van Ingen Schenau GJ,Toussaint HM,De Best H,Peeters W,Meulemans A,Schreurs AW

更新日期：1986-04-01 00:00:00

abstract：:In the present study, we investigated the accuracy of offside judgements of assistant referees in the English Premier League. The moment in the match, the position and movement speed of the assistant referee, attacker and second-last defender, together with the angle of view for the assistant referee were all consider...

journal_title：Journal of sports sciences

authors： Catteeuw P,Gilis B,Wagemans J,Helsen W

更新日期：2010-03-01 00:00:00