A comparison of analytical approaches to investigate associations for accelerometry-derived physical activity spectra with health and developmental outcomes in children.

abstract：:High ground reaction forces during the front foot contact phase of the bowling action are believed to be a major contributor to the high prevalence of lumbar stress fractures in fast bowlers. This study aimed to investigate the influence of front leg technique on peak ground reaction forces during the delivery stride....

journal_title：Journal of sports sciences

authors： Worthington P,King M,Ranson C

更新日期：2013-01-01 00:00:00

abstract：:The optimum pre-flight characteristics of the Hecht and handspring somersault vaults were determined using a two-segment simulation model. The model consisted of an arm segment and a body segment connected by a frictionless pin joint, simulating the vault from the Reuther board take-off through to landing. During hors...

journal_title：Journal of sports sciences

authors： King MA,Yeadon MR,Kerwin DG

更新日期：1999-04-01 00:00:00

abstract：:Although it is acknowledged that appropriate breast support during exercise is important, no published literature has assessed breast support usage in a cohort of female marathon runners. This study aimed to identify sport bra use and perceived importance of sports bra use in female marathon runners. Bra satisfaction,...

journal_title：Journal of sports sciences

authors： Brown N,White J,Brasher A,Scurr J

更新日期：2014-01-01 00:00:00

abstract：:The cognitive effects of acute aerobic exercise were investigated in endurance-trained individuals. On two occasions, 21 cyclists; 11 male (VO2max: 57 ± 9 mL·kg-1·min-1) and 10 female (VO2max: 51 ± 9 mL·kg-1·min-1), completed 45 min of fixed, moderate-intensity (discontinuous) cycling followed by an incremental ride t...

journal_title：Journal of sports sciences

authors： McCartney D,Desbrow B,Irwin C

更新日期：2021-01-01 00:00:00

abstract：:A calibration study was conducted to determine the threshold counts for two commonly used accelerometers, the ActiGraph and the Actical, to classify activities by intensity in children 5 to 8 years of age. Thirty-three children wore both accelerometers and a COSMED portable metabolic system during 15 min of rest and t...

journal_title：Journal of sports sciences

authors： Evenson KR,Catellier DJ,Gill K,Ondrak KS,McMurray RG

更新日期：2008-12-01 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：: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：:Few studies have focused on the effect of posture during sprint start. The aim of this study was to measure the effect of the modification of horizontal distance between the blocks during sprint start on three dimensional (3D) joint angular velocity. Nine trained sprinters started using three different starting positi...

journal_title：Journal of sports sciences

authors： Slawinski J,Dumas R,Cheze L,Ontanon G,Miller C,Mazure-Bonnefoy A

更新日期：2013-01-01 00:00:00

abstract：:The effect of long-term endurance and resistance training on central fatigue has been studied using transcranial magnetic stimulation by exercising the biceps brachii to exhaustion and recording motor-evoked potentials from the non-exercised homologous biceps. Three groups of eight healthy individuals took part: two g...

journal_title：Journal of sports sciences

authors： Triscott S,Gordon J,Kuppuswamy A,King N,Davey N,Ellaway P

更新日期：2008-07-01 00:00:00

abstract：:The purpose of this meta-analytic review was to examine the extent and quality of research on the post-activation potentiation acute effect of rest interval manipulation on jumping performance. This manuscript adopted the recommendations from the Preferred Reporting Items for Systematic Reviews and Meta-Analyses State...

journal_title：Journal of sports sciences

authors： Gouvêa AL,Fernandes IA,César EP,Silva WA,Gomes PS

更新日期：2013-01-01 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：:This study investigated the effects of knee localised muscle damage on running kinematics at varying speeds. Nineteen young women (23.2 ± 2.8 years; 164 ± 8 cm; 53.6 ± 5.4 kg), performed a maximal eccentric muscle damage protocol (5 × 15) of the knee extensors and flexors of both legs at 60 rad · s(-1). Lower body kin...

journal_title：Journal of sports sciences

authors： Tsatalas T,Giakas G,Spyropoulos G,Sideris V,Lazaridis S,Kotzamanidis C,Koutedakis Y

更新日期：2013-01-01 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：:Officiating bias is thought to contribute to home advantage. Recent research has shown that sports with subjective officiating tend to experience greater home advantage and that referees' decisions can be influenced by crowd noise, but little work has been done to examine whether individual referees vary in their home...

journal_title：Journal of sports sciences

authors： Boyko RH,Boyko AR,Boyko MG

更新日期：2007-09-01 00:00:00

abstract：:The kinematics of male wheelchair rugby players (n = 8) during the final match of the 2008 Demolition Derby were assessed using two cameras (10 Hz) and a tracking method based on image-processing techniques. The players' on-court trajectory, total and accumulated distances covered, distances covered during working and...

journal_title：Journal of sports sciences

authors： Sarro KJ,Misuta MS,Burkett B,Malone LA,Barros RM

更新日期：2010-01-01 00:00:00

abstract：:In the present study, we examined the independent and combined effects of an inspiratory muscle warm-up and inspiratory muscle training on intermittent running to exhaustion. Twelve males were recruited to undertake four experimental trials. Two trials (Trials 1 and 2) preceded either a 4-week training period of 1 × 3...

journal_title：Journal of sports sciences

authors： Lomax M,Grant I,Corbett J

更新日期：2011-03-01 00:00:00

abstract：:The purpose of this study was to establish normative data for regional sweat sodium concentration ([Na+]) and whole-body sweating rate in athletes. Data from 506 athletes (367 adults, 139 youth; 404 male, 102 female) were compiled from observational athlete testing for a retrospective analysis. The participants were s...

journal_title：Journal of sports sciences

authors： Baker LB,Barnes KA,Anderson ML,Passe DH,Stofan JR

更新日期：2016-01-01 00:00:00

abstract：:The aims of this study were to determine the validity of fat mass of the trunk as a predictor for visceral fat area at the umbilicus level and to develop equations to predict visceral fat mass at the umbilicus level using fat mass of the trunk measured by dual-energy X-ray absorptiometry (DXA) and bioelectrical impeda...

journal_title：Journal of sports sciences

authors： Demura S,Sato S

更新日期：2007-05-01 00:00:00

abstract：:Participant and protocol factors affect post-activation potentiation response. Performance enhancement is more consistent in highly-trained participants following multiple sets of a biomechanically similar conditioning activity. Providing optimal conditions, 6 international-level sprint cyclists executed multiple sets...

journal_title：Journal of sports sciences

authors： Munro LA,Stannard SR,Fink PW,Foskett A

更新日期：2017-07-01 00:00:00

abstract：:Accurate measures of heart rate (HR) during rehabilitation and sporting activities are important for precise exercise prescription to maintain or increase capacity. Wrist-worn activity monitors utilizing photoplethysmography technology (PPG) to configure HR show discrepant findings regarding validity depending on the ...

journal_title：Journal of sports sciences

authors： Støve MP,Haucke E,Nymann ML,Sigurdsson T,Larsen BT

更新日期：2019-04-01 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：: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：:Electromyographic activity and the electrocardiogram were recorded during windsurfing on the water in six subjects (three females and three males). 'Beating' and 'reaching' (both with continuous pumping), 'running' and 'uphauling' were performed in light to moderate winds. The physiological signals were transmitted to...

journal_title：Journal of sports sciences

authors： Dyson RJ,Buchanan M,Farrington TA,Hurrion PD

更新日期：1996-04-01 00:00:00

abstract：:The purpose of this study was to examine the influence of a carbohydrate-rich meal on post-prandial metabolic responses and skeletal muscle glycogen concentration. After an overnight fast, eight male recreational/club endurance runners ingested a carbohydrate (CHO) meal (2.5 g CHO x kg(-1) body mass) and biopsies were...

journal_title：Journal of sports sciences

authors： Chryssanthopoulos C,Williams C,Nowitz A,Bogdanis G

更新日期：2004-11-01 00:00:00

abstract：:In this study, we investigated whether video modelling can enhance gymnasts' performance of the circle on a pommel horse. The procedure associated expert-modelling with self-modelling and quantitative performance analysis. Sixteen gymnasts were randomly assigned to one of two groups: (1) a modelling group, which recei...

journal_title：Journal of sports sciences

authors： Baudry L,Leroy D,Chollet D

更新日期：2006-10-01 00:00:00

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 examined the effect of wearing time on comfort perception and landing biomechanics of basketball shoes with different midsole hardness. Fifteen basketball players performed drop landing and layup first step while wearing shoes of different wearing time (new, 2-, 4-, 6- and 8-week) and hardness (soft, medium...

journal_title：Journal of sports sciences

authors： Lam WK,Liu H,Wu GQ,Liu ZL,Sun W

更新日期：2019-10-01 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：:The International Paralympic Committee (IPC) and individual sports federations have established the need to develop evidence-based systems of classification for athletes with vision impairment (VI) that may differ depending on the visual demands of each sport. As a consequence, research has been conducted that led to ...

journal_title：Journal of sports sciences

authors： Allen PM,Mann DL,van der Linde I,Beukes EW

更新日期：2020-12-15 00:00:00

abstract：:This study aimed to compare the load-velocity and load-power relationships of three common variations of the squat exercise. 52 strength-trained males performed a progressive loading test up to the one-repetition maximum (1RM) in the full (F-SQ), parallel (P-SQ) and half (H-SQ) squat, conducted in random order on sepa...

journal_title：Journal of sports sciences

authors： Martínez-Cava A,Morán-Navarro R,Sánchez-Medina L,González-Badillo JJ,Pallarés JG

更新日期：2019-05-01 00:00:00