Houston, We Still Have a Problem.

abstract：PURPOSE:To examine the effects of several matches per day on running performance and cardiovascular stress in referees during a national Rugby Sevens championship. METHODS:Seven referees, who refereed 3 matches/ day, were monitored by GPS during 21 matches. RESULTS:Referees' movement patterns were relatively stable f...

journal_title：International journal of sports physiology and performance

authors： Suarez-Arrones L,Núñez J,Munguía-Izquierdo D,Portillo J,Mendez-Villanueva A

更新日期：2013-09-01 00:00:00

abstract：PURPOSE:To investigate the influence of prior knowledge of exercise duration on the pacing strategies employed during game-based activities. METHODS:Twelve semiprofessional team-sport athletes (mean ± SD age 22.8 ± 2.1 y) participated in this study. Players performed 3 small-sided games in random order. In one conditi...

journal_title：International journal of sports physiology and performance

authors： Gabbett TJ,Walker B,Walker S

更新日期：2015-04-01 00:00:00

abstract：PURPOSE:This study aimed to compare the effects of 5 different 18-week in-season strength training programs on strength gains and specific water polo performance. METHODS:A total of 56 young male water polo players were randomly assigned to the following 5 training groups: dry-land strength training, in-water-specific...

journal_title：International journal of sports physiology and performance

authors： Martin MS,Pareja Blanco F,De Villarreal ES

更新日期：2021-01-28 00:00:00

abstract：:Cross-country mountain biking (XCO) is a popular high-intensity endurance cycling event, but XCO pacing strategy has not been fully examined. This study examined the pacing strategies of different XCO athletes during a laboratory-simulated XCO performance test. Brazilian cyclists classified as performance-cohort level...

journal_title：International journal of sports physiology and performance

authors： Viana BF,Pires FO,Inoue A,Santos TM

更新日期：2018-02-01 00:00:00

abstract：PURPOSE:To evaluate the relative importance and predictive ability of salivary immunoglobulin A (s-IgA) measures with regards to upper respiratory illness (URI) in youth athletes. METHODS:Over a 38-week period, 22 youth athletes (age = 16.8 [0.5] y) provided daily symptoms of URI and 15 fortnightly passive drool saliv...

journal_title：International journal of sports physiology and performance

authors： Sawczuk T,Jones B,Welch M,Beggs C,Scantlebury S,Till K

更新日期：2021-01-13 00:00:00

abstract：CONTEXT:Badminton requires open and fast actions toward the shuttlecock, but there is no specific agility test for badminton players with specific movements. PURPOSE:To develop an agility test that simultaneously assesses perception and motor capacity and examine the test's concurrent and construct validity and its te...

journal_title：International journal of sports physiology and performance

authors： Loureiro Lde F Jr,de Freitas PB

更新日期：2016-04-01 00:00:00

abstract：PURPOSE:Foot-strike patterns (FSP) in running are related to certain impact kinetics during ground contact. A rear-foot strike (RFS) has been associated with higher impact forces, whereas a forefoot strike (FFS) is assumed to minimize these impact forces. This study investigated the effects of running with RFS or FFS o...

journal_title：International journal of sports physiology and performance

authors： Schroeder J,Erthel F,Hollander K

更新日期：2019-12-19 00:00:00

abstract：PURPOSE:Games-based drills are the predominant form of training adopted during basketball practice. As such, researchers have begun to quantify the physical, physiological, and perceptual demands of different games-based drill formats. However, study methodology has not been systematically reported across studies, limi...

journal_title：International journal of sports physiology and performance

authors： O'Grady CJ,Fox JL,Conte D,Ferioli D,Scanlan AT,Dalbo VJ

更新日期：2021-01-09 00:00:00

abstract：PURPOSE:Enhanced external counterpulsation (EECP) is a recovery strategy whose use has increased in recent years owing to the benefits observed in the clinical setting in some cardiovascular diseases (ie, improvement of cardiovascular function). However, its claimed effectiveness for the enhancement of exercise recover...

journal_title：International journal of sports physiology and performance

authors： Valenzuela PL,Sánchez-Martínez G,Torrontegi E,Montalvo Z,Lucia A,de la Villa P

更新日期：2018-09-01 00:00:00

abstract：PURPOSE:To examine the activity profiles of elite male competitors during international Taekwondo competition in relation to fin, feather, and heavy weight categories. METHODS:Twelve male Taekwondo competitors equally representing fin, feather, and heavy weight divisions were studied during the 2005 World Taekwondo Ch...

journal_title：International journal of sports physiology and performance

authors： Bridge CA,Jones MA,Drust B

更新日期：2011-09-01 00:00:00

abstract：PURPOSE:To assess the convergent validity of internal load measured with the CR100 scale in youth football players of 3 age groups. METHODS:A total of 59 players, age 12-17 years, from the youth academy of a professional football club were involved in this study. Convergent validity was examined by calculating the cor...

journal_title：International journal of sports physiology and performance

authors： Serpiello FR,Hopkins WG

更新日期：2021-01-06 00:00:00

abstract：PURPOSE:To examine the validity of 2 kinematic systems for assessing mean velocity (MV), peak velocity (PV), mean force (MF), peak force (PF), mean power (MP), and peak power (PP) during the full-depth free-weight back squat performed with maximal concentric effort. METHODS:Ten strength-trained men (26.1 ± 3.0 y, 1.81...

journal_title：International journal of sports physiology and performance

authors： Banyard HG,Nosaka K,Sato K,Haff GG

更新日期：2017-10-01 00:00:00

abstract：PURPOSE:The purpose of this project was to observe current warm-up practices in snowboard athletes and evaluate their physiological impact before competition. METHODS:An observational design was used to monitor 4 athletes (2 female) at an Open National Snowboard Cross Championships. Activity patterns, core temperature...

journal_title：International journal of sports physiology and performance

authors： Sporer BC,Cote A,Sleivert G

更新日期：2012-09-01 00:00:00

abstract：PURPOSE:To determine the effect of altitude training at 1600 and 1800 m on sea-level (SL) performance in national-level runners. METHODS:After 3 wk of SL training, 24 runners completed a 3-wk sojourn at 1600 m (ALT1600, n = 8), 1800 m (ALT1800, n = 9), or SL (CON, n = 7), followed by up to 11 wk of SL racing. Race per...

journal_title：International journal of sports physiology and performance

authors： Sharma AP,Saunders PU,Garvican-Lewis LA,Clark B,Welvaert M,Gore CJ,Thompson KG

更新日期：2019-03-01 00:00:00

abstract：:Recent work has espoused the idea that in applied sporting environments, "fast"-working practitioners should work together with "slow"-working researchers. However, due to economical and logistical constraints, such a coupling may not always be practical. Therefore, alternative means of combining research and applied ...

journal_title：International journal of sports physiology and performance

authors： Harper LD,McCunn R

更新日期：2017-08-01 00:00:00

abstract：PURPOSE:The aim of the study was to determine the effect of supramaximal exercise intensity during constant work-rate cycling to exhaustion on the accumulated oxygen deficit (AOD) and to determine the test-retest reliability of AOD. METHODS:Twenty-one trained male cyclists and triathletes (mean ± SD for age and maxima...

journal_title：International journal of sports physiology and performance

authors： Muniz-Pumares D,Pedlar C,Godfrey RJ,Glaister M

更新日期：2017-03-01 00:00:00

abstract：PURPOSE:The present study aimed to verify if practicing tackles during rugby union training sessions would affect the players' internal training load and acute strength loss. METHOD:A total of 9 male Italian Serie A rugby union players (age: 21 [2] y) were monitored by means of an integrated approach across 17 session...

journal_title：International journal of sports physiology and performance

authors： Lupo C,Ungureanu AN,Boccia G,Licciardi A,Rainoldi A,Brustio PR

更新日期：2021-01-05 00:00:00

abstract：:Purpose: To establish levels of association between physical fitness and match activity profiles of players in the Australian Football League (AFL) participation pathway. Methods: Players (N = 287, range 10.9-19.1 y) were assessed on 20-m sprint, AFL agility, vertical jump and running vertical jump, 20-m multistage fi...

journal_title：International journal of sports physiology and performance

authors： Haycraft JAZ,Kovalchik S,Pyne DB,Robertson S

更新日期：2019-07-01 00:00:00

abstract：PURPOSE:To compare the effects of unilateral and bilateral resistance training on single-leg power output, between-limbs imbalance (BLI), bilateral deficit (BLD), change of direction (COD), and linear sprinting and jumping performance in young elite basketball players. METHODS:Twenty-two young (U-16-U-19) male basketb...

journal_title：International journal of sports physiology and performance

authors： Gonzalo-Skok O,Tous-Fajardo J,Suarez-Arrones L,Arjol-Serrano JL,Casajús JA,Mendez-Villanueva A

更新日期：2017-01-01 00:00:00

abstract：:Despite some advances, it remains largely unknown how the millions of variations in the human genome influence athletic performance (especially in endurance events), and no single genetic test can really predict sports talent. However, there is experimental evidence from animal research that selecting for even a simpl...

journal_title：International journal of sports physiology and performance

authors： Sanchis-Gomar F,Pareja-Galeano H,Rodriguez-Marroyo JA,de Koning JJ,Lucia A,Foster C

更新日期：2016-10-01 00:00:00

abstract：:The aim of this study was to quantify peak age and improvements over the preceding years to peak age in elite athletic contestants according to athlete performance level, sex, and discipline. Individual season bests for world-ranked top 100 athletes from 2002 to 2016 (14,937 athletes and 57,049 individual results) wer...

journal_title：International journal of sports physiology and performance

authors： Haugen TA,Solberg PA,Foster C,Morán-Navarro R,Breitschädel F,Hopkins WG

更新日期：2018-10-01 00:00:00

abstract：PURPOSE:To examine the training and concomitant changes in laboratory- and field-test performance of highly trained endurance runners. METHODS:Fourteen highly trained male endurance runners (mean ± SD maximal oxygen uptake [VO2max] 69.8 ± 6.3 mL · kg-1 · min-1) completed this 1-y training study commencing in April. Du...

journal_title：International journal of sports physiology and performance

authors： Galbraith A,Hopker J,Cardinale M,Cunniffe B,Passfield L

更新日期：2014-11-01 00:00:00

abstract：:This study investigated the ergogenic effects of a commercial energy drink (Red Bull) or an equivalent dose of anhydrous caffeine in comparison with a noncaffeinated control beverage on cycling performance. Eleven trained male cyclists (31.7 ± 5.9 y 82.3 ± 6.1 kg, VO2max = 60.3 ± 7.8 mL · kg-1 · min-1) participated in...

journal_title：International journal of sports physiology and performance

authors： Quinlivan A,Irwin C,Grant GD,Anoopkumar-Dukie S,Skinner T,Leveritt M,Desbrow B

更新日期：2015-10-01 00:00:00

abstract：PURPOSE:To analyze the reliability and validity of a simple computation method to evaluate force (F), velocity (v), and power (P) output during a countermovement jump (CMJ) suitable for use in field conditions and to verify the validity of this computation method to compute the CMJ force-velocity (F-v) profile (includi...

journal_title：International journal of sports physiology and performance

authors： Jiménez-Reyes P,Samozino P,Pareja-Blanco F,Conceição F,Cuadrado-Peñafiel V,González-Badillo JJ,Morin JB

更新日期：2017-01-01 00:00:00

abstract：PURPOSE:To assess differences in event-specific specialization between elite African and non-African male marathon runners based on age, performance, and career length. METHODS:The top 90 African marathoners from 2001 to 2015 were compared with the top 90 non-African marathoners from the same time period across variou...

journal_title：International journal of sports physiology and performance

authors： Noble TJ,Chapman RF

更新日期：2018-01-01 00:00:00

abstract：:Repeated-sprint ability (RSA) is now well accepted as an important fitness component in team-sport performance. It is broadly described as the ability to perform repeated short (~3-4 s, 20-30 m) sprints with only brief (~10-30 s) recovery between bouts. Over the past 25 y a plethora of RSA tests have been trialed and ...

journal_title：International journal of sports physiology and performance

authors： Dawson B

更新日期：2012-09-01 00:00:00

abstract：:The theory of deliberate practice postulates that experts are always made, not born. This theory translated to the youth-sport domain means that if athletes want to be high-level performers, they need to deliberately engage in practice during the specialization years, spending time wisely and always focusing on tasks ...

journal_title：International journal of sports physiology and performance

authors： Gonçalves C EB,Rama L ML,Figueiredo AB

更新日期：2012-12-01 00:00:00

abstract：PURPOSE:Endurance running performance is a multifactorial phenotype that is strongly associated with running economy. Sit and reach range of motion (SR ROM) is negatively associated with running economy, suggesting that reduced SR ROM is advantageous for endurance running performance. The COL5A1 gene has been associate...

journal_title：International journal of sports physiology and performance

authors： Brown JC,Miller CJ,Posthumus M,Schwellnus MP,Collins M

更新日期：2011-12-01 00:00:00

abstract：PURPOSE:To assess the hydration status and level of hydration knowledge of youths at summer sports camps. METHODS:Sixty-seven active youths, 57 males (mean +/- SD, 12 +/- 2 y, 136 +/- 16 cm, 50.6 +/- 21.1 kg) and 10 females (13 +/- 2 y, 153 +/- 8 cm, 45.2 +/- 9.0 kg) participated in 4 d of sports camp. Hydration statu...

journal_title：International journal of sports physiology and performance

authors： Decher NR,Casa DJ,Yeargin SW,Ganio MS,Levreault ML,Dann CL,James CT,McCaffrey MA,Oconnor CB,Brown SW

更新日期：2008-09-01 00:00:00

abstract：PURPOSE:To examine the reliability of field-based running-specific measures of neuromuscular function assessed using global positioning system (GPS)-embedded accelerometers and their responses to 3 typical conditioned sessions (ie, strength, endurance, and speed) in elite soccer players. METHODS:Before and immediately...

journal_title：International journal of sports physiology and performance

authors： Buchheit M,Lacome M,Cholley Y,Simpson BM

更新日期：2018-05-01 00:00:00