Using spatial occlusion to explore the control strategies used in rapid interceptive actions: Predictive or prospective control?

abstract：:The manifestations of fatigue, as observed by reductions in the ability to produce a given force or power, are readily apparent soon after the initiation of intense activity. Moreover, following the activity, a sustained weakness may persist for days or even weeks. The mechanisms responsible for the impairment in perf...

journal_title：Journal of sports sciences

authors： Green HJ

更新日期：1997-06-01 00:00:00

abstract：:Sport-specific resistance training, through limb loading, can be a complimentary training method to traditional resistance training by loading the working muscles during all phases of a specific movement. The purpose of this study was to examine the acute effects of skating with an additional load on the skate, using ...

journal_title：Journal of sports sciences

authors： Mavor MP,Hay DC,Graham RB

更新日期：2018-07-01 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：: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：: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：:Composite materials have given manufacturers the freedom to develop a broad range of tennis rackets, allowing them to change key parameters such as the structural stiffness, mass, and position of the balance point. The aim of this research was to determine how changing these parameters could affect ball resultant rebo...

journal_title：Journal of sports sciences

authors： Allen TB,Haake SJ,Goodwill SR

更新日期：2011-02-01 00:00:00

abstract：:The aim of this study was to observe changes in the kinematics and muscle activities when barefoot running was initially adopted by six habitually shod, recreational rearfoot striking runners. Participants ran on a treadmill shod for 5 min, completed 3 × 10-min intervals of barefoot running and then completed a final ...

journal_title：Journal of sports sciences

authors： Strauts J,Vanicek N,Halaki M

更新日期：2016-01-01 00:00:00

abstract：:The aim of present study was to examine the relationships between serum and salivary values of free testosterone, dehydroepiandrosterone, and cortisol before and after a session of resistance exercise. Twenty-eight healthy men (mean age 40 years, s = 4) participated in the present study. Serum and salivary samples wer...

journal_title：Journal of sports sciences

authors： Cadore E,Lhullier F,Brentano M,Silva E,Ambrosini M,Spinelli R,Silva R,Kruel L

更新日期：2008-08-01 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：:While previous studies highlighted the importance of the different motivations for doing sports as proposed by self-determination theory, less emphasis has been put on the simultaneous presence of multiple motivations within the same individual. Therefore, the present study aimed to investigate the complex interaction...

journal_title：Journal of sports sciences

authors： Tóth-Király I,Amoura C,Bőthe B,Orosz G,Rigó A

更新日期：2020-04-01 00:00:00

abstract：:The human spleen shows a decrease in volume of around 40% early during vigorous exercise and in response to other stressful stimuli such as maximal apnoea and the breathing of hypoxic gas mixtures. Contraction seems an active response, mediated by alpha-adrenergic fibres in the splenic nerve. Given the relatively smal...

journal_title：Journal of sports sciences

authors： Shephard RJ

更新日期：2016-01-01 00:00:00

abstract：:The causes of fatigue during muscular exercise include factors that reside in the brain (central mechanisms) as well as the muscles themselves (peripheral mechanisms). Central fatigue is largely unexplored, but there is increasing evidence that increased brain serotonin (5-HT) can lead to central (mental) fatigue, the...

journal_title：Journal of sports sciences

authors： Davis JM

更新日期：1995-07-01 00:00:00

abstract：:The aim of the present study was to examine reliability and construct convergent validity of Player Load™ (PL) from trunk-mounted accelerometry, expressed as a cumulative measure and an intensity measure (PL · min-1). Fifteen male participants twice performed an overground football match simulation that included four ...

journal_title：Journal of sports sciences

authors： Barreira P,Robinson MA,Drust B,Nedergaard N,Raja Azidin RMF,Vanrenterghem J

更新日期：2017-09-01 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：:Chronic foot and ankle injuries are common in dancers; understanding how lower extremity loading changes in response to altered task goals can be beneficial for rehabilitation and injury prevention strategies. The purpose of this study was to examine mechanical demands during jump take-offs when the task goal was modi...

journal_title：Journal of sports sciences

authors： Jarvis DN,Kulig K

更新日期：2020-08-01 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：: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：: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：:This study aimed to explore how social media is being used by sports nutritionists as part of service provision, as well as practitioners' experiences and opinions of its use in practice. An exploratory sequential mixed methods approach was used during this research. Forty-four sports nutritionists completed an online...

journal_title：Journal of sports sciences

authors： Dunne DM,Lefevre C,Cunniffe B,Tod D,Close GL,Morton JP,Murphy R

更新日期：2019-11-01 00:00:00

abstract：:In this study, we examined the effects of upper-body pre-cooling before intermittent sprinting exercise in a moderate environment. Seven male and three female trained cyclists (age 26.8+/-5.5 years, body mass 68.5+/-9.5 kg, height 1.76+/-0.13 m, V O2peak 59.0+/-11.4 mL. kg(-1). min(-1); mean+/-s) performed 30 min of c...

journal_title：Journal of sports sciences

authors： Cheung S,Robinson A

更新日期：2004-07-01 00:00:00

abstract：:The aims of this study were to examine the test-retest reliability and construct validity of the flywheel (FW)-squat test. Twenty male amateur team sports athletes (mean±SD: age 23±3 years) completed one familiarization session and two testing sessions including: FW-squat test with an inertial load of 0.061 kg.m2, sta...

journal_title：Journal of sports sciences

authors： Beato M,Fleming A,Coates A,Dello Iacono A

更新日期：2020-10-06 00:00:00

abstract：:The purpose of this investigation was to analyze the validity and reliability of an iPhone app (named: Dorsiflex) for the measurement of weight-bearing ankle dorsiflexion. To do this, twelve healthy participants (age=28.6±2.3 years) performed a weight-bearing lunge test with each leg in five separate occasions, while ...

journal_title：Journal of sports sciences

authors： Balsalobre-Fernández C,Romero-Franco N,Jiménez-Reyes P

更新日期：2019-02-01 00:00:00

abstract：:This study investigated differences in lower-limb coordination and coordination variability between experienced and novice runners during a prolonged run. Thirty-four participants were categorised as either experienced (n = 17) or novice runners (n = 17). All participants performed a 31-min treadmill run at their indi...

journal_title：Journal of sports sciences

authors： Mo S,Chow DHK

更新日期：2019-05-01 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：: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：:This study examined the relationship between sit-to-stand (STS) power and physical function in adults with severe obesity. Thirty-eight adults (age: 44 ± 12 years; body mass index [BMI]: 45.2 ± 7.8 kg/m2) completed evaluations of STS power, strength and functional performance. STS power was measured with a wearable in...

journal_title：Journal of sports sciences

authors： Orange ST,Marshall P,Madden LA,Vince RV

更新日期：2019-06-01 00:00:00

abstract：:The purpose of this study was to examine the changes in the metabolic state of quadriceps femoris muscles using transverse relaxation time (T2), measured by muscle functional magnetic resonance (MR) imaging, after inactive or active recovery exercises with different intensities following high-intensity knee-extension ...

journal_title：Journal of sports sciences

authors： Mukaimoto T,Semba S,Inoue Y,Ohno M

更新日期：2014-01-01 00:00:00

abstract：:The aim of this study was to compare equivalence and agreement of physical activity output data collected by a Research Tri-axial accelerometer (R3T) during walking and running on a treadmill versus on land. Fifty healthy volunteers, 35 males (age 21.9 +/- 1.8 years) and 15 females (age 21.6 +/- 0.7 years), underwent ...

journal_title：Journal of sports sciences

authors： Vanhelst J,Zunquin G,Theunynck D,Mikulovic J,Bui-Xuan G,Beghin L

更新日期：2009-05-01 00:00:00

abstract：:We investigated whether heart rate (HR)-derived parameters are accurate performance predictors in endurance recreational runners. One hundred thirty recreational athletes completed an incremental running test (4´running + 1´rest). After each stage, we recorded HR, % of maximum HR (%HRmax), and blood lactate. We also a...

journal_title：Journal of sports sciences

authors： Etxegarai U,Insunza A,Larruskain J,Santos-Concejero J,Gil SM,Portillo E,Irazusta J

更新日期：2018-09-01 00:00:00

abstract：:Interval exercise training is increasingly recommended to improve health and fitness; however, it is not known if cardiovascular risk is different from continuous exercise protocols. This systematic review with meta-analyses assessed the effect of a single bout of interval exercise on cardiovascular responses that ind...

journal_title：Journal of sports sciences

authors： Price KJ,Gordon BA,Bird SR,Benson AC

更新日期：2020-05-01 00:00:00