Reference power values for the jump squat exercise in elite athletes: A multicenter study.

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：:Muscle weakness is considered a risk factor for ankle injury. Balance training and barefoot running have been used in an attempt to strengthen the muscles crossing the ankle. It is expected that training tasks that successfully strengthen the ankle would elicit increased muscular activity. However, it is unknown how a...

journal_title：Journal of sports sciences

authors： Lucas-Cuevas AG,Baltich J,Enders H,Nigg S,Nigg B

更新日期：2016-01-01 00:00:00

abstract：:The purpose of this study was to investigate the effect of an imagery training programme on the performance of a soccer task by skilled and novice players. An initial assessment of performance on the soccer task was undertaken, and then 22 skilled and 22 novice players were equally and randomly assigned to either a co...

journal_title：Journal of sports sciences

authors： Blair A,Hall C,Leyshon G

更新日期：1993-04-01 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：:While empirical evidence suggests that elite athletes have superior lifespan outcomes relative to the general population, less is known regarding their causes of death. The purpose of this study was to critically examine the mortality outcomes of deceased National Basketball Association and American Basketball Associa...

journal_title：Journal of sports sciences

authors： Lemez S,Wattie N,Lawler T,Baker J

更新日期：2018-07-01 00:00:00

abstract：:The aim of the present study was to investigate the influence of different types of tasks performed with or without an electronic device (tablet) on pre-sleep alertness, subsequent sleep quality and next-day athletic performance. Eight highly trained netball players attended a sleep laboratory for pre-sleep testing, p...

journal_title：Journal of sports sciences

authors： Jones MJ,Peeling P,Dawson B,Halson S,Miller J,Dunican I,Clarke M,Goodman C,Eastwood P

更新日期：2018-01-01 00:00:00

abstract：:We assessed the reliability and validity of a 10-min submaximal treadmill test (T10) to predict critical speed (CS). Forty-two runners completed a familiarization trial plus two experimental trials (T10 test and T10 retest). Reliability between the T10 test and T10 retest was assessed using coefficient of variation (C...

journal_title：Journal of sports sciences

authors： Follador L,de Borba EF,Neto ALB,da Silva SG

更新日期：2020-11-15 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 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：: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：: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：:This paper describes an analytical method for the design of iron golf club heads. The method divides the club head into the basic shape and the back-weighting. The basic shape, which consists of the club face profile, hosel and club face-hosel blend section, is configured directly from geometric specifications. An ada...

journal_title：Journal of sports sciences

authors： Hartzell TA,Nesbit SM

更新日期：1996-08-01 00:00:00

abstract：:Emotions experienced before and during sports competition have been found to influence sports performance. Emotion regulation is defined as the automatic or deliberate use of strategies to initiate, maintain, modify or display emotions (Gross & Thompson, 2007) and is proposed to occur when a discrepancy exists between...

journal_title：Journal of sports sciences

authors： Lane AM,Beedie CJ,Jones MV,Uphill M,Devonport TJ

更新日期：2012-01-01 00:00:00

abstract：:Research indicates that instructing athlete's to focus on bodily movements (internal focus of attention [IFA]) may hinder performance, whereas instructing them to focus on the movement outcome (external focus of attention [EFA]) often enhances performance. Despite the importance of instructions in striking combat spor...

journal_title：Journal of sports sciences

authors： Halperin I,Chapman DW,Martin DT,Abbiss C

更新日期：2017-03-01 00:00:00

abstract：:Children's fundamental movement skill levels (FMS) predict moderate-to-vigorous physical activity (MVPA). Asian children have been reported as less active than English-Europeans, possibly due to poorer skills. This study compared the FMS of children from Culturally and Linguistically Diverse (CALD) backgrounds and exa...

journal_title：Journal of sports sciences

authors： Barnett LM,Telford RM,Strugnell C,Rudd J,Olive LS,Telford RD

更新日期：2019-03-01 00:00:00

abstract：:Blood flow changes in response to exercise have been attributed, among other factors, to the effect of vasodilators factors on the microvasculature, suggesting a close relationship between small blood vessels and conducting arteries. The main purpose of this study was to determine the relationship between the changes ...

journal_title：Journal of sports sciences

authors： Alvares TS,Oliveira GV,Soares R,Murias JM

更新日期：2020-04-01 00:00:00

abstract：:Collective efficacy research has begun to progress from simply trying to verify the relationship between collective efficacy and performance to examining the mechanisms through which collective efficacy impacts on performance. To test hypotheses concerning the impact of collective efficacy on group goal selection and ...

journal_title：Journal of sports sciences

authors： Greenlees I,Graydon J,Maynard I

更新日期：2000-06-01 00:00:00

abstract：:Although the effects of lateral biases in visual attention ("pseudoneglect") have been examined in real-world settings, this phenomenon has yet to be considered within the realm of sporting performance. In the present study, we investigated the effects of pseudoneglect on putting errors in golf. Novice golfers (n = 30...

journal_title：Journal of sports sciences

authors： Roberts R,Turnbull OH

更新日期：2010-02-01 00:00:00

abstract：:Computers have played an important supporting role in the development of experimental and theoretical sports biomechanics. The role of the computer now extends from data capture and data processing through to mathematical and statistical modelling and simulation and optimization. This paper seeks to demonstrate that e...

journal_title：Journal of sports sciences

authors： Lapham AC,Bartlett RM

更新日期：1995-06-01 00:00:00

abstract：:The aim of this study was to assess the effects of quality of opposition and match status on technical and tactical volleyball performances, as measured by block, attack, serve, and set actions related to the tasks, space, players, and efficacy of selected game actions. Twenty-five matches from the men's World Cup 200...

journal_title：Journal of sports sciences

authors： Marcelino R,Mesquita I,Sampaio J

更新日期：2011-04-01 00:00:00

abstract：:The purpose of this study was to compare the maximal exercise performance during cycle ergometry of 34 men and 47 women. External peak power output (OPP) and optimized pedalling rate (ORPM) were calculated from data gathered during an optimization procedure performed on a friction braked cycle ergometer. In addition, ...

journal_title：Journal of sports sciences

authors： Winter EM,Brookes FB,Hamley EJ

更新日期：1991-04-01 00:00:00

abstract：:The feasibility requirements of administering field-based cognitive assessments are rarely reported. We examined the feasibility of administering a group-based cognitive test battery in a school setting with older adolescents. Several types of reliability were also assessed in the control group. Preliminary efficacy a...

journal_title：Journal of sports sciences

authors： Leahy AA,Michels MFI,Eather N,Hillman CH,Shigeta TT,Lubans DR,Smith JJ

更新日期：2020-08-01 00:00:00

abstract：:The aim of the present study was to describe the frequency, duration, and nature of repeated high-intensity exercise in Super 14 rugby union. Time-motion analysis was used during seven competition matches over the 2008 and 2009 Super 14 seasons; five players from each of four positional groups (front row forwards, bac...

journal_title：Journal of sports sciences

authors： Austin D,Gabbett T,Jenkins D

更新日期：2011-07-01 00:00:00

abstract：:Walking is one of the preferred exercises among elderly, but could a prolonged walking increase gait variability, a risk factor for a fall in the elderly? Here we determine whether 30 min of treadmill walking increases coefficient of variation of gait in elderly. Because gait responses to exercise depend on fitness le...

journal_title：Journal of sports sciences

authors： Da Rocha ES,Kunzler MR,Bobbert MF,Duysens J,Carpes FP

更新日期：2018-06-01 00:00:00

abstract：:This study examined the changes in running performance, maximal blood lactate concentrations and running kinematics between 85%BM anti-gravity (AG) running and normal over-ground (OG) running over an 8-week training period. Fifteen elite male developmental cricketers were assigned to either the AG or over-ground (CON)...

journal_title：Journal of sports sciences

authors： Brennan CT,Jenkins DG,Osborne MA,Oyewale M,Kelly VG

更新日期：2018-10-01 00:00:00

abstract：:Comfort has been shown to be the most desired football boot feature by players. Previous studies have shown discomfort to be related to increased plantar pressures for running shoes which, in some foot regions, has been suggested to be a causative factor in overuse injuries. This study examined the correlation between...

journal_title：Journal of sports sciences

authors： Okholm Kryger K,Jarratt V,Mitchell S,Forrester S

更新日期：2017-05-01 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：:Cryotherapy is an effective treatment for acute sports injury to soft tissue, although the effect of cryotherapy on exercise-induced muscle damage is unclear. The aim of this study was to assess the effects of cold water immersion on the symptoms of exercise-induced muscle damage following strenuous eccentric exercise...

journal_title：Journal of sports sciences

authors： Eston R,Peters D

更新日期：1999-03-01 00:00:00

abstract：:The yips is considered a task-specific movement disorder. Its estimated prevalence, however, is high compared to similar neurological movement disorders, possibly resulting from previous studies' restriction of samples based on skill level, and self-report bias. Alternatively, this high prevalence might be an indicati...

journal_title：Journal of sports sciences

authors： Klämpfl MK,Philippen PB,Lobinger BH

更新日期：2015-01-01 00:00:00

abstract：:Information--movement coupling is a fundamental concept, integral to theorizing on the coordination of goal-directed activity in ecological psychology. In this paper, we examine the implications of this concept for the design of experimental research and the organization of practice during the acquisition of movement ...

journal_title：Journal of sports sciences

authors： Davids K,Kingsbury D,Bennett S,Handford C

更新日期：2001-02-01 00:00:00