Impact phase kinematics of instep kicking in soccer.

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：:This study investigated the stability of the measurement of respiratory variables during rest, walking and running using the K4b(2) portable metabolic analyser in ten active males (age 31 ± 11 years; VO₂ peak 42.1 ± 2.6 ml · min(-1) · kg(-1)). Following a 10 min rest, participants completed three discontinuous increme...

journal_title：Journal of sports sciences

authors： Howe CC,Matzko RO,Piaser F,Pitsiladis YP,Easton C

更新日期：2014-01-01 00:00:00

abstract：:In an effort to evaluate the mechanisms underpinning performance in alpine ski racing, researchers have focused on the predictive validity of measures derived from fitness assessments. However, a limitation of this literature is the absence of practice time, since prolonged training may naturally develop specific fitn...

journal_title：Journal of sports sciences

authors： DeCouto BS,Fawver B,Taylor T,Williams AM

更新日期：2020-09-20 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：:The present study examined exercise affect during volume-load matched, high-velocity, low-load and low-velocity, high-load resistance exercise conditions in older adults. Ten older adults completed three sets of eight exercises on six separate occasions (three high-velocity, low-load and three low-velocity, high-load ...

journal_title：Journal of sports sciences

authors： Richardson DL,Duncan MJ,Jimenez A,Jones VM,Juris PM,Clarke ND

更新日期：2018-07-01 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：:Deci and Ryan's causality orientations theory suggests that there are individual differences in motivational orientation towards initiating and regulating behaviour. They described three causality orientations: autonomy, control and impersonal. The aim of this paper is to describe the development and concurrent validi...

journal_title：Journal of sports sciences

authors： Rose EA,Markland D,Parfitt G

更新日期：2001-06-01 00:00:00

abstract：:Despite low mineral intakes in several groups of female 'ball-game' players, investigations of blood profiles and physical performance do not indicate any evident physiological benefits of micronutrient supplementation. Nevertheless, measurements of iron status are warranted, particularly in female athletes. Iron ther...

journal_title：Journal of sports sciences

authors： Fogelholm M

更新日期：1994-07-01 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：:Middle-distance athletes implement a dynamic continuum in training volume, duration, and intensity that utilizes all energy-producing pathways and muscle fibre types. At the centre of this periodized training regimen should be a periodized nutritional approach that takes into account acute and seasonal nutritional nee...

journal_title：Journal of sports sciences

authors： Stellingwerff T,Boit MK,Res PT,International Association of Athletics Federations.

更新日期：2007-01-01 00:00:00

abstract：:We examined a theoretical model of global self-esteem that incorporated constructs from achievement goal and self-determination theories. The model hypothesized that self-determined or autonomous motives would mediate the influence of achievement goal orientation on global self-esteem. The adapted version of the Behav...

journal_title：Journal of sports sciences

authors： Hein V,Hagger MS

更新日期：2007-01-15 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：:In order to investigate further the use of standardization procedures to determine training effects on cardiac dimension and function, two groups of subjects were analysed noninvasively. A control group of sedentary men (n = 7) and an experimental group of weight lifters (n = 12) volunteered for a standard M-mode echo...

journal_title：Journal of sports sciences

authors： Brown SP,Thompson WR

更新日期：1987-07-01 00:00:00

abstract：:The training and competitive programmes of elite athletes incorporate travel schedules, often long journeys, across multiple time zones. In such cases, travel causes both transient fatigue and a malaise known as "jet-lag" that persists for some days. Jet-lag is due to the disturbance of the body's circadian rhythms: d...

journal_title：Journal of sports sciences

authors： Reilly T,Waterhouse J,Burke LM,Alonso JM,International Association of Athletics Federations.

更新日期：2007-01-01 00:00:00

abstract：:The purpose of this study was to gather information from scientific literature related to all steps of Van Mechelen's "sequence of prevention" for injuries applied to youth and adult recreational field hockey players. A systematic review was conducted in Medline via Pubmed and in SPORTDiscus via EBSCOhost. Twenty-six ...

journal_title：Journal of sports sciences

authors： Cornelissen M,Kemler E,Verhagen E,Gouttebarge V

更新日期：2020-09-01 00:00:00

abstract：:The behavioural modifications that accompany Ramadan intermittent fasting (RIF) are usually associated with some alterations in the metabolic, physiological, and psychological responses of athletes that may affect sport performance. Muslim athletes who are required to train and/or compete during the month-long, diurna...

journal_title：Journal of sports sciences

authors： Chaouachi A,Leiper JB,Chtourou H,Aziz AR,Chamari K

更新日期：2012-01-01 00:00:00

abstract：:In this study, we examine the effect of exercise on the time and flow characteristics of the respiratory cycle profile at the point of volitional exercise termination. Eight males (mean age 29 years, s = 10; body mass 74 kg, s = 7; height 1.75 m, s = 0.04) undertook a cycle test to volitional exhaustion on a cycle erg...

journal_title：Journal of sports sciences

authors： Kift J,Williams EM

更新日期：2007-12-01 00:00:00

abstract：:This study was concerned with the measurement of a selection of performance variables from competitors in the women's long jump final of the World Student Games held in Sheffield, UK in July 1991. Several performances of each of six finalists were recorded on cine-film at 100 Hz. Resulting planar kinematic data were o...

journal_title：Journal of sports sciences

authors： Lees A,Fowler N,Derby D

更新日期：1993-08-01 00:00:00

abstract：:Mental preparation has long been thought of as an important aspect of physical performance, especially in tasks requiring muscular strength. Recent studies in sport psychology have addressed this issue, mainly through the investigation of 'psych-up' strategies and effects. The overall trend in such experiments support...

journal_title：Journal of sports sciences

authors： Biddle SJ

更新日期：1985-04-01 00:00:00

abstract：:The study examined Yo-Yo intermittent recovery level 2 (YYIR2) and submaximal YYIR1 test performances in 172 male semi-professional football players (age; 25.8 ± 4.1 years) representing all teams in a top league at pre-season, start-season, mid-season and end-season. YYIR2 performance was 847 ± 227 m (±SD) at pre-seas...

journal_title：Journal of sports sciences

authors： Mohr M,Krustrup P

更新日期：2014-01-01 00:00:00

abstract：:This study investigated the effect of self-reported tolerance of the intensity of exercise on affective responses to, self-efficacy for and intention to repeat low-volume high-intensity interval exercise (HIIE). Thirty-six healthy participants (mean age 21 ± 2 years) were split into high tolerance (HT; n = 19), low to...

journal_title：Journal of sports sciences

authors： Bradley C,Niven A,Phillips SM

更新日期：2019-07-01 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：: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：:An evaluation of a six-week Combined minimal footwear transition and gait-retraining combination vs. gait retraining only on impact characteristics and leg stiffness. Twenty-four trained male runners were randomly assigned to either (1) Minimalist footwear transition Combined with gait-retraining over a six-week perio...

journal_title：Journal of sports sciences

authors： Warne JP,Smyth BP,Fagan JO,Hone ME,Richter C,Nevill AM,Moran KA,Warrington GD

更新日期：2017-08-01 00:00:00

abstract：:This investigation was undertaken in an effort to establish physiological characteristics of soccer players and to relate them to positional roles. A total of 135 footballers (age 24.4 +/- 4.6 years) were assessed for body mass, % body fat, haemoglobin, maximal oxygen uptake (VO2 max), leg power, anaerobic capacity an...

journal_title：Journal of sports sciences

authors： Davis JA,Brewer J,Atkin D

更新日期：1992-12-01 00:00:00

abstract：:Young soccer players often use one particular dominant leg (DL) to perform dynamic movements which require strength, resulting in leg asymmetry. The aim of this study was to compare, in young soccer players, the effect of using DL and non-dominant leg (NDL) on time performance of two change of direction (COD) manoeuvr...

journal_title：Journal of sports sciences

authors： Rouissi M,Chtara M,Owen A,Chaalali A,Chaouachi A,Gabbett T,Chamari K

更新日期：2016-01-01 00:00:00

abstract：:The study examined the "micro-structure" of football practice and the "macro-structure" of participation history of female professional football players. Participants were 29 German 1st league (Bundesliga) players, 14 of whom played on the senior national team (Olympic Champion in 2016). A questionnaire recorded the p...

journal_title：Journal of sports sciences

authors： Güllich A

更新日期：2019-06-01 00:00:00

abstract：:We investigated changes in cardiorespiratory performance, BMI and leisure-time physical activity among Finnish adolescents from 2003 to 2010. In addition, we compared cardiorespiratory performance levels between normal weight and overweight adolescents, grouped according to their physical activity. Participants were a...

journal_title：Journal of sports sciences

authors： Palomäki S,Heikinaro-Johansson P,Huotari P

更新日期：2015-01-01 00:00:00

abstract：:Since junior performances have little predictive value for future success, other solutions are sought to assess a young player's potential. The objectives of this systematic review are (1) to provide an overview of instruments measuring personal talent determinants of young players in racquet sports, and (2) to evalua...

journal_title：Journal of sports sciences

authors： Faber IR,Bustin PM,Oosterveld FG,Elferink-Gemser MT,Nijhuis-Van der Sanden MW

更新日期：2016-01-01 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