Individual differences in the interleukin-6 response to maximal and submaximal exercise tasks.

abstract：:The aim of the present study was to assess the reliability and validity of the Newtest Powertimer 300-series portable contact mat and photocells (Newtest Oy, Finland). The participants were 20 male soccer players aged 19.1+/-3.5 years. The validity and reliability of the Powertimer (contact mat and photocells) were as...

journal_title：Journal of sports sciences

authors： Enoksen E,Tønnessen E,Shalfawi S

更新日期：2009-01-01 00:00:00

abstract：:In swimming relay races, various start techniques are performed by swimmers, but it remains unclear which technique leads to a better start performance. Therefore, the purpose of the present study was to compare the kinematic characteristics of different relay start techniques with the new starting block Omega OSB11. ...

journal_title：Journal of sports sciences

authors： Qiu X,Veiga S,Calvo AL,Kibele A,Navarro E

更新日期：2020-12-18 00:00:00

abstract：:In this study, we found that the optimum take-off angle for a long jumper may be predicted by combining the equation for the range of a projectile in free flight with the measured relations between take-off speed, take-off height and take-off angle for the athlete. The prediction method was evaluated using video measu...

journal_title：Journal of sports sciences

authors： Linthorne NP,Guzman MS,Bridgett LA

更新日期：2005-07-01 00:00:00

abstract：:Two studies investigated the structure of different athlete leadership networks and its relationship to cohesion using social network analysis. In Study 1, we examined the relationship between a general leadership quality network and task and social cohesion as measured by the Group Environment Questionnaire (GEQ). In...

journal_title：Journal of sports sciences

authors： Loughead TM,Fransen K,Van Puyenbroeck S,Hoffmann MD,De Cuyper B,Vanbeselaere N,Boen F

更新日期：2016-11-01 00:00:00

abstract：:In modern sprint cross-country skiing, strength and maximal speed are major determinants of performance. The aims of this study were to ascertain the anthropometric characteristics of world-class sprint skiers and to evaluate whether a specific body composition and/or body dimension characterizes a successful sprint s...

journal_title：Journal of sports sciences

authors： Stoggl T,Enqvist J,Muller E,Holmberg HC

更新日期：2010-01-01 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：:To examine the activity profile and physiological demands of top-class soccer refereeing, we performed computerized time-motion analyses and measured the heart rate and blood lactate concentration of 27 referees during 43 competitive matches in the two top Danish leagues. To relate match performance to physical capaci...

journal_title：Journal of sports sciences

authors： Krustrup P,Bangsbo J

更新日期：2001-11-01 00:00:00

abstract：:This study aimed to investigate swimmer's use and coach prescription of recovery strategies during training and competition while examining perceived challenges, barriers, and beliefs in the importance of their effectiveness. A mixed-methods sequential explanatory design was implemented. Thirty-seven male and 45 femal...

journal_title：Journal of sports sciences

authors： Shell SJ,Slattery K,Clark B,Broatch JR,Halson S,Kellmann M,Coutts AJ

更新日期：2020-09-01 00:00:00

abstract：:In 19 elite schoolboy rowers, the relationships between anthropometric characteristics, metabolic parameters, strength variables and 2000-m rowing ergometer performance time were analysed to test the hypothesis that a combination of these variables would predict performance better than either individual variables or o...

journal_title：Journal of sports sciences

authors： Russell AP,Le Rossignol PF,Sparrow WA

更新日期：1998-11-01 00:00:00

abstract：:Heart rate (HR), when combined with accelerometry, can dramatically improve estimates of energy expenditure and sleep. Advancements in technology, via the development and introduction of small, low-cost photoplethysmography devices embedded within wrist-worn consumer wearables, have made the collection of heart rate (...

journal_title：Journal of sports sciences

authors： Zhang Y,Weaver RG,Armstrong B,Burkart S,Zhang S,Beets MW

更新日期：2020-09-01 00:00:00

abstract：:The aim of this study was to determine the variations in substrate utilization between men and women matched for ventilatory threshold (Tvent) during incremental arm cranking and leg cycling exercise at 70, 85, 100 and 115% of the mode-specific Tvent. Recreationally active men (n=12) and women (n=10) with similar valu...

journal_title：Journal of sports sciences

authors： Yasuda N,Ruby BC,Gaskill SE

更新日期：2006-12-01 00:00:00

abstract：:The present study aimed to clarify the effects of oncoming target velocities on the ability of rapid force production and accuracy and variability of simultaneous control of both force production intensity and timing. Twenty male participants (age: 21.0 ± 1.4 years) performed rapid gripping with a handgrip dynamometer...

journal_title：Journal of sports sciences

authors： Ohta Y

更新日期：2017-12-01 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：:We examined the influence of caffeine supplementation on cognitive performance and perceptual responses in female team-game players taking low-dose monophasic oral contraceptives of the same hormonal composition. Ten females (24 ± 4 years; 59.7 ± 3.5 kg body mass; 2-6 training sessions per week) took part in a randomi...

journal_title：Journal of sports sciences

authors： Ali A,O'Donnell J,Von Hurst P,Foskett A,Holland S,Starck C,Rutherfurd-Markwick K

更新日期：2016-01-01 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：: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：:Fundamental movement skills (FMS) are the basic building blocks of more advanced, complex movements required to participate in physical activity. This study examined FMS proficiency across the full range of Irish primary school children (n = 2098, 47% girls, age range 5-12 years). Participants were assessed using the ...

journal_title：Journal of sports sciences

authors： Behan S,Belton S,Peers C,O'Connor NE,Issartel J

更新日期：2019-11-01 00:00:00

abstract：:This study examined the long-term effects of the 11+ on physical performance in adolescent male football (soccer) players. Eighty-two 14- to 16-year-old male football players (11+ = 42 players, control = 40 players) participated. Teams were randomised to control (CON) and intervention (INT) groups. INT applied the 11+...

journal_title：Journal of sports sciences

authors： Zarei M,Abbasi H,Daneshjoo A,Barghi TS,Rommers N,Faude O,Rössler R

更新日期：2018-11-01 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：:The purpose of the present investigation was to identify muscle damage, inflammatory response and oxidative stress blood markers in athletes undertaking the ultra-endurance MultiSport Brazil race. Eleven well-trained male athletes (34.3 ± 3.1 years, 74.0 ± 7.6 kg; 172.2 ± 5.1 cm) participated in the study and performe...

journal_title：Journal of sports sciences

authors： de Lucas RD,Caputo F,Mendes de Souza K,Sigwalt AR,Ghisoni K,Lock Silveira PC,Remor AP,da Luz Scheffer D,Guglielmo LG,Latini A

更新日期：2014-01-01 00:00:00

abstract：:This study aimed to compare the recovery kinetics of physical performance and subjective ratings in response to a soccer-specific exercise simulation on natural grass and artificial turf. Physical performance tests and subjective ratings were assessed on 13 professional soccer players before, immediately after, 24 h a...

journal_title：Journal of sports sciences

authors： Nédélec M,McCall A,Carling C,Le Gall F,Berthoin S,Dupont G

更新日期：2013-01-01 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：:The aim of this study was to investigate the effects of adding vertical/horizontal plyometrics to the soccer training routine on jumping and sprinting performance in U-20 soccer players. The vertical jumping group (VJG) performed countermovement jumps (CMJ), while the horizontal jumping group (HJG) executed horizontal...

journal_title：Journal of sports sciences

authors： Loturco I,Pereira LA,Kobal R,Zanetti V,Kitamura K,Abad CC,Nakamura FY

更新日期：2015-01-01 00:00:00

abstract：:Microsaccades are important fixation eye movements for visual scene perception. Compared to novices, athletes make fewer fixations of longer duration toward limited interest areas crucial for action prediction. Thus, our aim was to study the microsaccade features during those fixations. Gaze behaviour of expert and no...

journal_title：Journal of sports sciences

authors： Piras A,Raffi M,Perazzolo M,Malagoli Lanzoni I,Squatrito S

更新日期：2019-05-01 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：: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 purpose of this study was to examine the effects of calendar and skeletal age, anthropometric dimensions, training history and their interactions on vertical jumping height and horizontal overhead throwing velocity in a cross-section of 318 young male athletes (age range 9-16 years) participating in cross-country ...

journal_title：Journal of sports sciences

authors： Viitasalo JT,Rahkila P,Osterback L,Alén M

更新日期：1992-10-01 00:00:00

abstract：:Decision-making is a central component of the in-game performance of Australian football umpires; however, current umpire training focuses largely on physiological development with decision-making skills development conducted via explicit lecture-style meetings with limited practice devoted to making actual decisions....

journal_title：Journal of sports sciences

authors： Larkin P,Mesagno C,Berry J,Spittle M,Harvey J

更新日期：2018-02-01 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：: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