Hip joint kinetics in the table tennis topspin forehand: relationship to racket velocity.

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 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：:Using a randomised cross-over design, free-living lunch intake and subjective appetite were examined in 10 children (9.8 ± 0.6 years) following high-intensity interval training (HIIT) versus a control sedentary (SED) period, within a school setting. The 22-min HIIT took place during a regular PE lesson and consisted o...

journal_title：Journal of sports sciences

authors： Morris A,Cramb R,Dodd-Reynolds CJ

更新日期：2018-02-01 00:00:00

abstract：:We examined the effects of pre-exercise sodium bicarbonate (NaHCO3) ingestion on the slow component of oxygen uptake (VO2) kinetics in seven professional road cyclists during intense exercise. One hour after ingesting either a placebo or NaHCO3 (0.3 g x kg body mass(-1)), each cyclist (age, 25 +/- 2 years; VO2max, 74....

journal_title：Journal of sports sciences

authors： Santalla A,Pérez M,Montilla M,Vicente L,Davison R,Earnest C,Lucía A

更新日期：2003-01-01 00:00:00

abstract：:In this study, we examined the influence of internal and external attention instructions on the performance of a pitch shot by golfers who were either highly skilled (mean handicap = 4) or low skilled (mean handicap = 26). Ten golfers in each skill group used a 9-iron to pitch a ball as close as possible to an orange ...

journal_title：Journal of sports sciences

authors： Perkins-Ceccato N,Passmore SR,Lee TD

更新日期：2003-08-01 00:00:00

abstract：:Research has shown that talented athletes outscore their mainstream peers on the basis of self-regulation. Although valuable, this does not tell us more about the distinction between good athletes and the best, which is a prerequisite in talent development. Therefore, we examined the self-regulatory skills of 222 male...

journal_title：Journal of sports sciences

authors： Jonker L,Elferink-Gemser MT,Visscher C

更新日期：2010-06-01 00:00:00

abstract：:The purposes of this study were to examine the effects of varying levels of goals on increasing daily steps and the frequency of goal achievement among middle-aged adults. Ninety-six adults participated in a randomised control study. Participants were randomly assigned to five different step goal groups: (1) Easy (n =...

journal_title：Journal of sports sciences

authors： Moon DH,Yun J,McNamee J

更新日期：2016-10-01 00:00:00

abstract：:We examined the effects of time of day on a cycling time trial with and without a prolonged warm-up, among cyclists who tended towards being high in "morningness". Eight male cyclists (mean +/- s: age = 24.9 +/- 3.5 years, peak power output = 319 +/- 34 W, chronotype = 39 +/- 6 units) completed a 16.1-km time trial wi...

journal_title：Journal of sports sciences

authors： Atkinson G,Todd C,Reilly T,Waterhouse J

更新日期：2005-03-01 00:00:00

abstract：:The aim of this study was to evaluate physiological and technical attributes of prepubertal soccer players during multiple small-sided games (SSGs), and determine if SSGs can act as a talent identification tool. Sixteen highly trained U10 soccer players participated and separated into two groups of eight. Each group p...

journal_title：Journal of sports sciences

authors： Fenner JS,Iga J,Unnithan V

更新日期：2016-10-01 00:00:00

abstract：:This paper addresses the potential role of fatigue as a factor contributing to the deterioration of high level performance in ice hockey. Particularly, attention is given to the general description of different types of fatigue and the mechanisms underlying each type. Data have been presented illustrating the nature a...

journal_title：Journal of sports sciences

authors： Green HJ

更新日期：1987-01-01 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：:In this study, we examined patterns of leg muscle recruitment and co-activation, and the relationship between muscle recruitment and cadence, in highly trained cyclists. Electromyographic (EMG) activity of the tibialis anterior, tibialis posterior, peroneus longus, gastrocnemius lateralis and soleus was recorded using...

journal_title：Journal of sports sciences

authors： Chapman AR,Vicenzino B,Blanch P,Knox JJ,Hodges PW

更新日期：2006-02-01 00:00:00

abstract：:In rowing, power is inevitably lost as kinetic energy is imparted to the water during push-off with the blades. Power loss is estimated from reconstructed blade kinetics and kinematics. Traditionally, it is assumed that the oar is completely rigid and that force acts strictly perpendicular to the blade. The aim of the...

journal_title：Journal of sports sciences

authors： Hofmijster M,De Koning J,Van Soest AJ

更新日期：2010-08-01 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：: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：:This study aimed to evaluate the test-retest reliability of a new device for assessing ankle joint kinesthesia. This device could measure the passive motion threshold of four ankle joint movements, namely plantarflexion, dorsiflexion, inversion and eversion. A total of 21 healthy adults, including 13 males and 8 femal...

journal_title：Journal of sports sciences

authors： Sun W,Song Q,Yu B,Zhang C,Mao D

更新日期：2015-01-01 00:00:00

abstract：:To develop and assess the validity of the Referee Training Activity Questionnaire (RTAQ), a systematic process was employed: 1) item generation; 2) assessments of content and face validity; and 3) assessments of criterion validity. In stage 1, items were generated following semi-structured interviews with an expert pa...

journal_title：Journal of sports sciences

authors： P McEwan G,Unnithan V,Easton C,Arthur R

更新日期：2020-12-01 00:00:00

abstract：:State anxiety is known to affect far aiming tasks, but less is known about the effects of state anxiety on running and aiming while running. Therefore, in the current study participants ran on a treadmill at their preferred speed in a low- and high-anxiety condition. In both conditions, running was combined with dart ...

journal_title：Journal of sports sciences

authors： Nibbeling N,Daanen HA,Gerritsma RM,Hofland RM,Oudejans RR

更新日期：2012-01-01 00:00:00

abstract：:In order to determine the role of body build characteristics in modern pentathletes, 65 female participants at the IXth World Modern Pentathlon Championships, 1989 (Wiener Neustadt, Austria) were investigated. Of these, 54 participate in the competition; the other 11 were reserves. Their mean (+/- S.D.) age was 22.34 ...

journal_title：Journal of sports sciences

authors： Claessens AL,Hlatky S,Lefevre J,Holdhaus H

更新日期：1994-08-01 00:00:00

abstract：:Exercise and treating hyperlipidaemia with statins are two integral components of the American Heart Association guidelines to reduce cardiovascular risk in adults. Since statins can cause myalgias and myopathies, they could affect the duration or intensity of an exercise regimen. To determine the impact of statin use...

journal_title：Journal of sports sciences

authors： Terpak K,Guthrie S,Erickson S

更新日期：2015-01-01 00:00:00

abstract：:In this crossover study, we wished to determine if normalized inter-limb differences in strength differed from inter-limb differences in voluntary activation at 30°, 70°, and 90° of knee flexion. We also assessed the relationship between inter-limb differences in torque with the inter-limb differences in activation. T...

journal_title：Journal of sports sciences

authors： Pietrosimone BG,Park CM,Gribble PA,Pfile KR,Tevald MA

更新日期：2012-01-01 00:00:00

abstract：:Fundamental movement skills (FMS) have been assessed in children in order to investigate the issues of the low proportion of children who meet physical activity (PA) guidelines and rising levels of obesity. The aim of this research was to identify whether previous or current FMS level is a better predictor of PA level...

journal_title：Journal of sports sciences

authors： Bryant ES,James RS,Birch SL,Duncan M

更新日期：2014-01-01 00:00:00

abstract：:In this study, we examined the relationship between anthropometric, strength and power characteristics of rugby forwards, their body position when scrummaging, and their ability to apply force when scrummaging. Force applied to an instrumented scrum machine was measured for 56 players, both individually and as scrum p...

journal_title：Journal of sports sciences

authors： Quarrie KL,Wilson BD

更新日期：2000-04-01 00:00:00

abstract：:Many of the factors identified as influencing the home advantage have an underlying social basis, presumably through the influence exerted by the home crowd. Beliefs in the home advantage and the causes of that advantage also have a social basis: sports coverage and fan discourse focus on some aspects of the phenomeno...

journal_title：Journal of sports sciences

authors： Smith DR

更新日期：2005-04-01 00:00:00

abstract：:The main aim of this study was to develop and test psychometrically the Physical Education Predisposition Scale, to assess secondary school students' cost-benefit assessment of physical education (PE) participation (PE attitude affective and attitude cognitive) and self-perceptions (PE perceived competence and self-ef...

journal_title：Journal of sports sciences

authors： Hilland TA,Stratton G,Vinson D,Fairclough S

更新日期：2009-12-01 00:00:00

abstract：:In this study, we measured the vertical and horizontal take-off forces, plantar pressures and activation patterns of four muscles (vastus lateralis, gluteus maximus, tibialis anterior, gastrocnemius) in 10 ski jumpers in simulated laboratory conditions when wearing either training shoes or ski jumping boots. We found ...

journal_title：Journal of sports sciences

authors： Virmavirta M,Komi PV

更新日期：2001-12-01 00:00:00

abstract：:Bioelectrical impedance spectroscopy (BIS) provides an affordable and practical assessment of fat-free mass (FFM). However, little information is available on the assessment of changes in fat-free mass in top-level athletes using BIS. The aim of this study was to examine the accuracy of BIS in tracking changes in fat-...

journal_title：Journal of sports sciences

authors： Matias CN,Santos DA,Fields DA,Sardinha LB,Silva AM

更新日期：2012-01-01 00:00:00

abstract：:A plausible explanation for the ancient long jump records from Greek antiquity is sought on the basis of pictorial and written sources, and corroborated with practical tests. Ancient sources report that athletes jumped more than 15 m with weights in their hands, which enabled them to jump further than without these we...

journal_title：Journal of sports sciences

authors： Lenoir M,De Clercq D,Laporte W

更新日期：2005-10-01 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：: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