No effect of acute ingestion of Thai ginseng (Kaempferia parviflora) on sprint and endurance exercise performance in humans.

abstract：:Waist girth is recognised as a better predictor of obesity, particularly abdominal obesity, compared to other measures. Although several protocols for waist girth exist, arm position is either ignored, or not specified in unambiguous terms. Therefore, the purpose of this study was to determine if arm position influenc...

journal_title：Journal of sports sciences

authors： Lennie SC,Amofa-Diatuo T,Nevill A,Stewart AD

更新日期：2013-01-01 00:00:00

abstract：:The purpose of this study was to examine the effects of task and ego goal orientation and moral identity on prosocial and antisocial judgement and behaviour in football. The interaction between task and ego orientation in predicting these variables was also examined. Participants were 210 adult male footballers (age 2...

journal_title：Journal of sports sciences

authors： Sage L,Kavussanu M,Duda J

更新日期：2006-05-01 00:00:00

abstract：:Research has shown that talented athletes outscore their mainstream peers on the basis of self-regulation. Although valuable, this does not tell us more about the distinction between good athletes and the best, which is a prerequisite in talent development. Therefore, we examined the self-regulatory skills of 222 male...

journal_title：Journal of sports sciences

authors： Jonker L,Elferink-Gemser MT,Visscher C

更新日期：2010-06-01 00:00:00

abstract：:In this paper we report on two studies that investigated the physical demands of professional rugby league match-play. Instudy one, National Rugby League (NRL) and National Youth Competition (NYC) players underwent global positioning system (GPS) analysis during competitive matches. No differences (P > 0.05) were obse...

journal_title：Journal of sports sciences

authors： Gabbett TJ

更新日期：2013-01-01 00:00:00

abstract：:Body image is an important concept when assessing mental health and, thus, a target for intervention work. The common approach to assess body image is via self-report and, consequently, it is important to assess stability and susceptibility of items to random change. Participants (N = 99, aged: 18-30 years) completed ...

journal_title：Journal of sports sciences

authors： Nevill AM,Lane AM,Duncan MJ

更新日期：2015-01-01 00:00:00

abstract：:There is a paucity of studies that have evaluated substrate utilisation and protein catabolism during multiday strenuous exercise in athletes. Eleven well-trained male cyclists completed 3 h of race-simulated cycling on 4 consecutive days. Cyclist exercised 2 h postprandially and with carbohydrate supplementation (~50...

journal_title：Journal of sports sciences

authors： Oosthuyse T,Avidon I

更新日期：2015-01-01 00:00:00

abstract：:Physical activity is important in obesity prevention, but the effectiveness of different physical activity modalities remains to be determined among children. The main purpose of this study was to compare the effects of a 6-month soccer programme and a traditional physical activity programme on changes in body composi...

journal_title：Journal of sports sciences

authors： Seabra A,Katzmarzyk P,Carvalho MJ,Seabra A,Coelho-E-Silva M,Abreu S,Vale S,Póvoas S,Nascimento H,Belo L,Torres S,Oliveira J,Mota J,Santos-Silva A,Rêgo C,Malina RM

更新日期：2016-10-01 00:00:00

abstract：:The inflammatory responsive cytokine interleukin-6 (IL-6) helps regulate immune responses to exercise. Evidence suggests that increases in IL-6 are related to exercise duration and intensity. However, the moderating effect of sex and underlying mediators have received limited attention. We compared plasma IL-6 respons...

journal_title：Journal of sports sciences

authors： Edwards KM,Burns VE,Ring C,Carroll D

更新日期：2006-08-01 00:00:00

abstract：:In the present study, we examined the influence of shoe lacing on foot biomechanics in running. Twenty experienced rearfoot runners ran in six different lacing conditions across a force platform at a speed of 3.3 m . s(-1). Foot pronation during contact, tibial acceleration, and plantar pressure distribution of the ri...

journal_title：Journal of sports sciences

authors： Hagen M,Hennig EM

更新日期：2009-02-01 00:00:00

abstract：:High Intensity Interval Training (HIIT) may be effective for accumulating VPA. However, the contribution of HIIT to overall physical activity is unknown. Our primary aim was to explore the impact of school-based HIIT on physical activity. The secondary aim was to explore within-individual changes in physical activity ...

journal_title：Journal of sports sciences

authors： Costigan SA,Ridgers ND,Eather N,Plotnikoff RC,Harris N,Lubans DR

更新日期：2018-05-01 00:00:00

abstract：:Although research into coaching has increased considerably during the last two decades, an area of neglect has been that of the professional youth coach. The aim of this study was to investigate the working behaviours of six top-level professional soccer coaches. Data were collected using a modified version of the Ari...

journal_title：Journal of sports sciences

authors： Smith M,Cushion CJ

更新日期：2006-04-01 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：:Athletes have been shown to have greater movement imagery abilities than non-athletes. However, since these differences were observed using questionnaires where participants subjectively judged the vividness of performing imagined movements, it is possible that responses could be biased by other factors such as social...

journal_title：Journal of sports sciences

authors： Madan CR,Singhal A

更新日期：2014-01-01 00:00:00

abstract：:In order to investigate the effect of playing styles on the match performance of football teams, data were analysed on 18 technical performance-related variables and 8 physical performance-related variables from 59 matches in the 2018 FIFA World Cup. A k-means cluster analysis was conducted to classify all match obser...

journal_title：Journal of sports sciences

authors： Yi Q,Gómez MA,Wang L,Huang G,Zhang H,Liu H

更新日期：2019-11-01 00:00:00

abstract：:We explore how expertise is obtained in the domain of rugby refereeing. The research data are qualitative and are drawn from an 18 month period working in collaboration with the Rugby Football Union Elite Referee Unit. Adopting an ethnographic mode of enquiry, the study combined long-term participant observation with ...

journal_title：Journal of sports sciences

authors： Ollis S,Macpherson A,Collins D

更新日期：2006-03-01 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 the current study was twofold: (1) to validate the use of action sport cameras for quantifying focus of visual attention in sailing and (2) to apply this method to examine whether an external focus of attention is associated with better performance in upwind sailing. To test the validity of this novel quant...

journal_title：Journal of sports sciences

authors： Pluijms JP,Cañal-Bruland R,Hoozemans MJ,Van Beek MW,Böcker K,Savelsbergh GJ

更新日期：2016-08-01 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：: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：:Chronic fatigue in the athletic population is a common but difficult diagnostic challenge for the sports physician. While a degree of fatigue may be normal for any athlete during periods of high-volume training, the clinician must be able to differentiate between this physiological fatigue and more prolonged, severe f...

journal_title：Journal of sports sciences

authors： Derman W,Schwellnus MP,Lambert MI,Emms M,Sinclair-Smith C,Kirby P,Noakes TD

更新日期：1997-06-01 00:00:00

abstract：:The aim of this study was to evaluate the effects of sleep hygiene (SH) education on sleep quality in soccer players after a late-evening small-sided-game (SSG) training session. Twenty-nine non-professional players were recruited and allocated to either an experimental group (EG, n = 17) that received SH education, o...

journal_title：Journal of sports sciences

authors： Vitale JA,La Torre A,Banfi G,Bonato M

更新日期：2019-12-01 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：: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

abstract：:Many sports events require participants to exert a maximal effort in the closing stages-that is, after prior fatiguing exercise. Peak and mean pedalling rate during 30 s of high-intensity cycle ergometer exercise was manipulated by altering the applied resistance or the initial exercise intensity so that the effect of...

journal_title：Journal of sports sciences

authors： Cherry PW,Lakomy HK,Nevill ME,Maddox NL

更新日期：1997-04-01 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：:The use of large cross-sectional norms on Brazilian children and youths aged 7 to 18 years within a six level competition plan helps to assess development status and monitor change. Non-athletic prototypes for comparative purposes are illustrated by the use of the lowest competitive level of 18 year olds to assess dif...

journal_title：Journal of sports sciences

authors： Matsudo VK,Rivet RE,Pereira MH

更新日期：1987-04-01 00:00:00

abstract：:The present retrospective study intended to determine age, performance, the role of nationality and participation trends across calendar years in runners competing in "Comrades Marathon", the ultra-marathon with the longest tradition and the highest number of finishers worldwide. We analysed 235,467 finishers (40,211 ...

journal_title：Journal of sports sciences

authors： Nikolaidis PT,Knechtle B

更新日期：2019-06-01 00:00:00

abstract：:This study aimed to investigate the effects of different training modalities on the soluble Klotho (S-Klotho) plasma levels in sedentary middle-aged adults. A total of 74 middle-aged adults (53.4 ± 5.0 years old; 52.7% women) were enrolled in the FIT-AGEING study. We conducted a 12-week randomised controlled trial. Th...

journal_title：Journal of sports sciences

authors： Amaro-Gahete FJ,De-la-O A,Jurado-Fasoli L,Espuch-Oliver A,de Haro T,Gutierrez A,Ruiz JR,Castillo MJ

更新日期：2019-10-01 00:00:00

abstract：:The aim of this study was to determine the effects of frequency of verbal encouragement during maximal exercise testing. Twenty-eight participants (12 males, 16 females) aged 20.9 +/- 1.5 years (mean +/- s) performed a maximal exercise test (VO2max) on a treadmill without any verbal encouragement. The participants wer...

journal_title：Journal of sports sciences

authors： Andreacci JL,LeMura LM,Cohen SL,Urbansky EA,Chelland SA,Von Duvillard SP

更新日期：2002-04-01 00:00:00

abstract：:Abstract This study constructed a technique effectiveness evaluation formula for table tennis players based on the relationship between the scoring rate and usage rate of techniques and established evaluation criteria through the examination of 224 matches of the world's top 35 players. It also built a competition per...

journal_title：Journal of sports sciences

authors： Zhang H,Liu W,Hu JJ,Liu RZ

更新日期：2014-01-01 00:00:00