Analytical design of iron golf club heads.

abstract：:In this study, we examined the effects of augmented kinematic knowledge of performance (KP) on shooting performance and learning. Knowledge of performance described the aiming trajectory of the rifle barrel. The effects of knowledge of performance were evaluated in terms of shooting accuracy (shooting score), variabil...

journal_title：Journal of sports sciences

authors： Mononen K,Viitasalo JT,Konttinen N,Era P

更新日期：2003-10-01 00:00:00

abstract：:The aims of the present study were to assess the maximal oxygen uptake and body composition of adult Chinese men and women, and to determine how these variables relate to age. The cross-sectional sample consisted of 196 men and 221 women aged 20 - 64 years. Maximal oxygen uptake (VO2max) was determined by indirect cal...

journal_title：Journal of sports sciences

authors： Wong SY,Chan FW,Lee CK,Li M,Yeung F,Lum CC,Choy DT,Woo J

更新日期：2008-02-01 00:00:00

abstract：:Propulsive forces are important determinants of swimming performance. The aim of this study was to quantify the measurement error (uncertainty) in propulsive forces calculated from kinematic data. Ten operators digitized underwater video recordings of a breaststroke swimmer's right arm action. Four landmarks on the ha...

journal_title：Journal of sports sciences

authors： Payton CJ,Bartlett RM

更新日期：1995-12-01 00:00:00

abstract：:A high ambient temperature reduces the capacity to perform prolonged exercise. Total carbohydrate oxidation is less, and thus glycogen depletion is not limiting. Fluid ingestion in the heat should, therefore, focus on maintenance of hydration status rather than on substrate provision. Six healthy males cycled to exhau...

journal_title：Journal of sports sciences

authors： Galloway SD,Maughan RJ

更新日期：2000-05-01 00:00:00

abstract：:The aim of the present study was to test the hypothesis that upper body aerobically trained athletes (kayak canoeists) would have greater left ventricular wall thickness, but similar left ventricular diastolic chamber dimensions, compared with recreationally active and sedentary men. Ultrasound echocardiography was us...

journal_title：Journal of sports sciences

authors： Gates PE,Campbell IG,George KP

更新日期：2004-09-01 00:00:00

abstract：:Using a two-study approach, we examined a methodology for objectively depicting team performance and form in a professional rugby union side. Study 1 developed standardized indicators to examine a team's performance in a single match relative to their previous matches over a domestic season via a performance report an...

journal_title：Journal of sports sciences

authors： Jones NM,James N,Mellalieu SD

更新日期：2008-05-01 00:00:00

abstract：:Ghrelin is a hormone that stimulates hunger. Intense exercise has been shown to temporarily suppress hunger after exercise. In the present study, we investigated whether post-exercise hunger suppression is mediated by reduced plasma total ghrelin concentrations. Nine men and nine women participated in the study. Their...

journal_title：Journal of sports sciences

authors： Burns SF,Broom DR,Miyashita M,Mundy C,Stensel DJ

更新日期：2007-04-01 00:00:00

abstract：:Research has suggested the need to use a person-centred approach to examine multidimensionality of motivation. Guided by self-determination theory (Deci & Ryan, 1985), the primary aim of the present study was to examine the motivational profiles in table tennis players and their composition by gender, country, trainin...

journal_title：Journal of sports sciences

authors： Chu TLA,Zhang T,Hung TM

更新日期：2018-12-01 00:00:00

abstract：:This study investigated whether repeated, very short duration sprints influenced endothelial function (indicated by flow-mediated dilation) and triacylglycerol concentrations following the ingestion of high-fat meals in adolescent boys. Nine adolescent boys completed two, 2-day main trials (control and exercise), in a...

journal_title：Journal of sports sciences

authors： Sedgwick MJ,Morris JG,Nevill ME,Barrett LA

更新日期：2015-01-01 00:00:00

abstract：:An important goal of the athlete's everyday diet is to provide the muscle with substrates to fuel the training programme that will achieve optimal adaptation for performance enhancements. In reviewing the scientific literature on post-exercise glycogen storage since 1991, the following guidelines for the training diet...

journal_title：Journal of sports sciences

authors： Burke LM,Kiens B,Ivy JL

更新日期：2004-01-01 00:00:00

abstract：:Electromyographic activity and the electrocardiogram were recorded during windsurfing on the water in six subjects (three females and three males). 'Beating' and 'reaching' (both with continuous pumping), 'running' and 'uphauling' were performed in light to moderate winds. The physiological signals were transmitted to...

journal_title：Journal of sports sciences

authors： Dyson RJ,Buchanan M,Farrington TA,Hurrion PD

更新日期：1996-04-01 00:00:00

abstract：:Front crawl swimmers often restrict the number of breaths they take during a race because of the possible adverse effects of the breathing action on resistance or stroke mechanics. The aim of this study was to determine whether differences exist in the kinematics of the trunk and upper extremity used during preferred-...

journal_title：Journal of sports sciences

authors： Payton CJ,Bartlett RM,Baltzopoulos V,Coombs R

更新日期：1999-09-01 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

abstract：:Although elite athletes have been reported to be high academic achievers, many elite soccer players struggle with a stereotype of being low academic achievers. The purpose of this study was to compare the academic level (pre-university or pre-vocational) and self-regulatory skills (planning, self-monitoring, evaluatio...

journal_title：Journal of sports sciences

authors： Jonker L,Elferink-Gemser MT,Toering TT,Lyons J,Visscher C

更新日期：2010-12-01 00:00:00

abstract：:Muscle imbalance and deficit are key parameters for guiding rehabilitation and sports sessions and avoiding injuries. However, the high cost and non-portable nature of most instruments employed for muscle strength assessment frequently hamper an affordable evaluation in field conditions. This study evaluated the valid...

journal_title：Journal of sports sciences

authors： Romero-Franco N,Fernández-Domínguez JC,Montaño-Munuera JA,Romero-Franco J,Jiménez-Reyes P

更新日期：2019-08-01 00:00:00

abstract：:Laboratory-based studies indicate mild dehydration adversely affects mood. Although ultra-endurance events often result in mild to moderate dehydration, little research has evaluated whether the relationship between hydration status and mood state also exists in these arduous events. Therefore, the purpose of this stu...

journal_title：Journal of sports sciences

authors： Moyen NE,Ganio MS,Wiersma LD,Kavouras SA,Gray M,McDermott BP,Adams JD,Binns AP,Judelson DA,McKenzie AL,Johnson EC,Muñoz CX,Kunces LJ,Armstrong LE

更新日期：2015-01-01 00:00:00

abstract：:Low-intensity exercise with blood flow restriction (BFR) is an increasingly common method of improving muscular strength and hypertrophy, and improving aerobic fitness, in clinical and athletic populations. The aim of this systematic review was to describe common approaches to determining occlusion pressures for BFR e...

journal_title：Journal of sports sciences

authors： Murray J,Bennett H,Boyle T,Williams M,Davison K

更新日期：2020-11-01 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 purpose of this study was to test the hypothesis that increased availability of blood-borne glucose would improve endurance after carbohydrate loading. A single-leg exercise model was employed, taking advantage of the fact that supercompensation of muscle glycogen occurs only in a previously exercised limb. Endura...

journal_title：Journal of sports sciences

authors： Hardman AE,Williams C

更新日期：1989-07-01 00:00:00

abstract：:The use of dietary supplements is widespread in sport and most athletes competing at the highest level of competition use some form of dietary supplementation. Many of these supplements confer no performance or health benefit, and some may actually be detrimental to both performance and health when taken in high doses...

journal_title：Journal of sports sciences

authors： Maughan RJ

更新日期：2005-09-01 00:00:00

abstract：:Athletes report using imagery most often to successfully cope with and master challenging situations. This function of imagery is termed "motivational general-mastery" and includes imagining being focused, confident and in control in difficult circumstances. Also, athletes often use imagery to regulate their arousal l...

journal_title：Journal of sports sciences

authors： Gregg M,Hall C

更新日期：2006-09-01 00:00:00

abstract：:Interceptive actions require individuals to time their movements with an external event. To meet the intense spatial-temporal demands needed for successful interception, a tight coupling and coordination between perceptual and motor processes is required. The control strategy that underlies successful performance is a...

journal_title：Journal of sports sciences

authors： Panchuk D,Vickers JN

更新日期：2009-10-01 00:00:00

abstract：:Relationships between skeletal maturation and fundamental motor skills and gross motor coordination were evaluated in 429 children (213 boys and 216 girls) 7-10 years. Skeletal age was assessed (Tanner-Whitehouse 2 method), and stature, body mass, motor coordination (Körperkoordinations Test für Kinder, KTK) and funda...

journal_title：Journal of sports sciences

authors： Freitas DL,Lausen B,Maia JA,Lefevre J,Gouveia ÉR,Thomis M,Antunes AM,Claessens AL,Beunen G,Malina RM

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：:The aims of this study were to determine the influence of an 8-over spell on cricket fast bowling technique and performance (speed and accuracy), and to establish the relationship of selected physical capacities with technique and performance during an 8-over spell. Fourteen first-grade fast bowlers with a mean age of...

journal_title：Journal of sports sciences

authors： Portus MR,Sinclair PJ,Burke ST,Moore DJ,Farhart PJ

更新日期：2000-12-01 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：:Indoor hockey is a highly competitive international sport, yet no research to date has investigated the key actions within this sport. As with outdoor field hockey, penalty corners represent one of the most likely situations in which goals can be scored. All 36 matches of the round-robin phase of the 2010-2011 England...

journal_title：Journal of sports sciences

authors： Vinson D,Padley S,Croad A,Jeffreys M,Brady A,James D

更新日期：2013-01-01 00:00:00

abstract：:In the present study, we examined the influence of shoe lacing on foot biomechanics in running. Twenty experienced rearfoot runners ran in six different lacing conditions across a force platform at a speed of 3.3 m . s(-1). Foot pronation during contact, tibial acceleration, and plantar pressure distribution of the ri...

journal_title：Journal of sports sciences

authors： Hagen M,Hennig EM

更新日期：2009-02-01 00:00:00

abstract：:The effects of exercise on the core musculature have not been investigated in prepubescents. The main purpose of the present study was to determine the volume and degree of asymmetry of rectus abdominis, obliques and transversus abdominis, quadratus lumborum, iliopsoas, gluteus and paravertebralis muscles in prepubesc...

journal_title：Journal of sports sciences

authors： Sanchis-Moysi J,Idoate F,Álamo-Arce D,Calbet JA,Dorado C

更新日期：2017-04-01 00:00:00

abstract：:This study aims to assess fundamental movement skill (FMS) proficiency, physical self-confidence levels, and the relationship between these variables and gender differences among adolescents. Three hundred and ninety five adolescents aged 13.78 years (SD = ±1.2) from 20 schools were involved in this study. The Test of...

journal_title：Journal of sports sciences

authors： McGrane B,Belton S,Powell D,Issartel J

更新日期：2017-09-01 00:00:00