Effects of Plyometric and Directional Training on Physical Fitness Parameters in Youth Soccer Players.

abstract：PURPOSE:To compare the effects of 2 different intensity distribution training programs (threshold [THR] and polarized [POL]) on fat metabolism and neuromuscular variables. METHODS:Twenty ultrarunners were allocated to POL (n = 11; age 40.6 [9.7] y, weight 73.5 [10.8] kg, VO2max 55.8 [4.9] mL·kg-1·min-1) or THR group (...

journal_title：International journal of sports physiology and performance

authors： Pérez A,Ramos-Campo DJ,Marín-Pagan C,Martínez-Noguera FJ,Chung LH,Alcaraz PE

更新日期：2019-10-15 00:00:00

abstract：PURPOSE:To better understand the carbohydrate (CHO) requirement of Australian Football (AF) match play by quantifying muscle glycogen utilisation during an in-season AF match. METHODS:After a 24 h CHO loading protocol of 8 g/kg and 2 g/kg in the pre-match meal, two elite male forward players had biopsies sampled from ...

journal_title：International journal of sports physiology and performance

authors： Routledge HE,Leckey JJ,Lee MJ,Garnham A,Graham S,Burgess D,Burke LM,Erskine RM,Close GL,Morton JP

更新日期：2018-06-12 00:00:00

abstract：:Velocity strength training requires exercise modalities that allow athletes to reach very high movement velocity, which is limited during vertical movements involving body weight. PURPOSE:To quantify the mechanical outputs developed during horizontal squat jumps (HSJs), notably the movement velocity, in comparison wi...

journal_title：International journal of sports physiology and performance

authors： Samozino P,Rivière JR,Rossi J,Morin JB,Jimenez-Reyes P

更新日期：2018-08-01 00:00:00

abstract：:The maximal lactate steady state (MLSS) depicts the highest blood lactate concentration (BLC) that can be maintained over time without a continual accumulation at constant prolonged workload. In cycling, no difference in the MLSS was combined with lower power output related to peak workload (IMLSS) at 100 than at 50 r...

journal_title：International journal of sports physiology and performance

authors： Beneke R,Leithäuser RM

更新日期：2017-03-01 00:00:00

abstract：PURPOSE:To evaluate the effect of simulated soccer on the hamstrings eccentric torque-angle profile and angle of peak torque (APTeccH), and on the hamstrings:quadriceps torque ratio at specific joint angles (ASHecc:Qcon). METHODS:The authors assessed dominant-limb isokinetic concentric and eccentric knee flexion and c...

journal_title：International journal of sports physiology and performance

authors： Cohen DD,Zhao B,Okwera B,Matthews MJ,Delextrat A

更新日期：2015-04-01 00:00:00

abstract：:In high-performance cycling, it is important to maintain a healthy balance between training load and recovery. Recently a new submaximal cycle test, known as the Lamberts and Lambert Submaximal Cycle Test (LSCT), has been shown to be able to accurately predict cycling performance in 15 well-trained cyclists. The aim o...

journal_title：International journal of sports physiology and performance

authors： Lamberts RP

更新日期：2014-07-01 00:00:00

abstract：PURPOSE:To assess the measures of salivary free testosterone and cortisol concentrations across selected rugby union matches according to game outcome. METHODS:Twenty-two professional male rugby union players were studied across 6 games (3 wins and 3 losses). Hormone samples were taken 40 min before the game and 15 mi...

journal_title：International journal of sports physiology and performance

authors： Gaviglio CM,Crewther BT,Kilduff LP,Stokes KA,Cook CJ

更新日期：2014-03-01 00:00:00

abstract：UNLABELLED:Regular monitoring of adaptation to training is important for optimizing training load and recovery, which is the main factor in successful training. PURPOSE:To investigate the usefulness of a novel submaximal running test (SRT) in field conditions in predicting and tracking changes of endurance performance...

journal_title：International journal of sports physiology and performance

authors： Vesterinen V,Nummela A,Ayramo S,Laine T,Hynynen E,Mikkola J,Häkkinen K

更新日期：2016-04-01 00:00:00

abstract：PURPOSE:The time-motion characteristics and the within-athlete variability in movement patterns were quantified for the same male fast bowler playing One Day International (ODI) cricket matches (n=12). METHODS:A number of different time motion characteristics were monitored using a portable 5-Hz global positioning sys...

journal_title：International journal of sports physiology and performance

authors： Petersen C,Pyne DB,Portus MR,Karppinen S,Dawson B

更新日期：2009-06-01 00:00:00

abstract：CONTEXT:Rugby union is a physically demanding collision sport with high injury rates. There is a common perception that higher training loads result in greater injury risk in field-based sports. OBJECTIVES:To determine injury, anthropometric, and physical-performance characteristics in junior rugby union players and i...

journal_title：International journal of sports physiology and performance

authors： Ball S,Halaki M,Sharp T,Orr R

更新日期：2018-01-01 00:00:00

abstract：:Hemoglobin mass (tHb) is considered to be a main factor for sea-level performance after "live high-train low" (LHTL) altitude training, but little research has focused on the persistence of tHb following cessation of altitude exposure. The aim of the case study was to investigate short-term effects of various hematolo...

journal_title：International journal of sports physiology and performance

authors： Pottgiesser T,Garvican LA,Martin DT,Featonby JM,Gore CJ,Schumacher YO

更新日期：2012-03-01 00:00:00

abstract：PURPOSE:To identify contributing factors to the incidence of illness for professional team-sport athletes, using training load (TL), self-reported illness, and well-being data. METHODS:Thirty-two professional rugby league players (26.0 ± 4.8 y, 99.1 ± 9.6 kg, 1.84 ± 0.06 m) were recruited from the same club. Players p...

journal_title：International journal of sports physiology and performance

authors： Thornton HR,Delaney JA,Duthie GM,Scott BR,Chivers WJ,Sanctuary CE,Dascombe BJ

更新日期：2016-05-01 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: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:Track-cycling team pursuit (TP) is a highly technical effort involving 4 athletes completing 4 km from a standing start, often in less than 240 s. Transitions between athletes leading the team are obviously of utmost importance. PURPOSE:To perform qualitative video analyses of transitions of world-class athlet...

journal_title：International journal of sports physiology and performance

authors： Sigrist S,Maier T,Faiss R

更新日期：2017-11-01 00:00:00

abstract：PURPOSE:Critical speed (CS) and supra-CS distance capacity (D') are useful metrics for monitoring changes in swimmers' physiological and performance capacities. However, the utility of these metrics across a season has not been systematically evaluated in high level swimmers. METHODS:Twenty-seven swimmers (18 female; ...

journal_title：International journal of sports physiology and performance

authors： Mitchell LJG,Rattray B,Wu P,Saunders PU,Pyne DB

更新日期：2019-07-01 00:00:00

abstract：:Player loads and fatigue responses are reported in 15 professional rugby league players (24.3 ± 3.8 y) during a period of intensified fixtures. Repeated measures of internal and external loads, perceived well-being, and jump flight time were recorded across 22 d, comprising 9 training sessions and matches on days 5, 1...

journal_title：International journal of sports physiology and performance

authors： Twist C,Highton J,Daniels M,Mill N,Close G

更新日期：2017-09-01 00:00:00

abstract：PURPOSE:To determine prevalence of heel strike in a midsize city marathon, if there is an association between foot-strike classification and race performance, and if there is an association between foot-strike classification and gender. METHODS:Foot-strike classification (forefoot, midfoot, heel, or split strike), gen...

journal_title：International journal of sports physiology and performance

authors： Kasmer ME,Liu XC,Roberts KG,Valadao JM

更新日期：2013-05-01 00:00:00

abstract：PURPOSE:To assess the reliability of a 5-min-stage graded exercise test (GXT) and determine the association between physiological attributes and performance over stochastic cycling trials of varying distance. METHODS:Twenty-eight well-trained male cyclists performed 2 GXTs and either a 30-km (n = 17) or a 100-km stoch...

journal_title：International journal of sports physiology and performance

authors： Levin GT,Laursen PB,Abbiss CR

更新日期：2014-03-01 00:00:00

abstract：:Paratriathlon will debut at the Rio 2016 Paralympic Games, but research documenting the physiological attributes and training practices of elite paratriathletes is lacking. This case study reports on the physiology and training of a long-distance worldchampion male paratriathlete (below-the-knee amputee) over 19 mo. H...

journal_title：International journal of sports physiology and performance

authors： Mujika I,Orbañanos J,Salazar H

更新日期：2015-10-01 00:00:00

abstract：PURPOSE:The purpose of this study was to evaluate differences in hamstring activation during lower body resistance training exercises. This study also sought to assess differences in hamstring-to-quadriceps muscle activation ratios and gender differences therein. METHODS:A randomized repeated measures design was used ...

journal_title：International journal of sports physiology and performance

authors： Ebben WP

更新日期：2009-03-01 00:00:00

abstract：:This review aimed to examine the current evidence for 3 primary training intensity distribution types: (1) pyramidal training, (2) polarized training, and (3) threshold training. Where possible, the training intensity zones relative to the goal race pace, rather than physiological or subjective variables, were calcula...

journal_title：International journal of sports physiology and performance

authors： Kenneally M,Casado A,Santos-Concejero J

更新日期：2018-10-01 00:00:00

abstract：PURPOSE:To compare the force-production capacities among boulderers, lead climbers, and speed climbers during a pull-up test using a force-velocity-power profile. METHODS:In total, 24 high-elite climbers (11 boulderers, 8 lead climbers, and 5 speed climbers) did 2 pull-ups at different percentages of their body mass (...

journal_title：International journal of sports physiology and performance

authors： Levernier G,Samozino P,Laffaye G

更新日期：2020-06-22 00:00:00

abstract：:This study examined the influence of turn radius on velocity and energy profiles when skidding and step turning during more and less effective downhill turns while cross-country skiing. Thirteen elite female cross-country skiers performed single turns with a 9- or 12-m radius using the skidding technique and a 12- or ...

journal_title：International journal of sports physiology and performance

authors： Sandbakk O,Bucher Sandbakk S,Supej M,Holmberg HC

更新日期：2014-01-01 00:00:00

abstract：PURPOSE:To determine the effect of high- versus low-intensity training in the heat and ensuing taper period in the heat on endurance performance. METHODS:In total, 19 well-trained triathletes undertook 5 days of normal training and a 1-wk taper including either low- (heat acclimation [HA-L], n = 10) or high-intensity ...

journal_title：International journal of sports physiology and performance

authors： Schmit C,Duffield R,Hausswirth C,Brisswalter J,Le Meur Y

更新日期：2018-07-01 00:00:00

abstract：PURPOSE:To describe the physical and technical demands of rugby league 9s (RL9s) match play for positional groups. METHODS:Global positioning system data were collected during 4 games from 16 players from a team competing in the Auckland RL9s tournament. Players were classified into positional groups (pivots, outside ...

journal_title：International journal of sports physiology and performance

authors： Kempton T,Coutts AJ

更新日期：2015-09-01 00:00:00

abstract：PURPOSE:The study aimed to analyze the validity and reliability of commercially available nondifferential Global Positioning System (NdGPS) devices for measures of total distance during linear, multidirectional and soccer-specific motion at 1-Hz and 5-Hz sampling frequencies. METHODS:Linear (32 trials), multidirection...

journal_title：International journal of sports physiology and performance

authors： Portas MD,Harley JA,Barnes CA,Rush CJ

更新日期：2010-12-01 00:00:00

abstract：PURPOSE:In real-life competitive situations, athletes are required to continuously make decisions about how and when to invest their available energy resources. This study attempted to identify how different competitive environments invite elite short-track speed skaters to modify their pacing behavior during head-to-h...

journal_title：International journal of sports physiology and performance

authors： Konings MJ,Hettinga FJ

更新日期：2018-07-01 00:00:00

abstract：PURPOSE:To identify the effect of additional elastic force on the kinetic and kinematic characteristics, as well as the magnitude of leg stiffness, during the performance of accentuated countermovement jumps (CMJs). METHODS:Fifteen trained male subjects performed 3 types of CMJ including free CMJ (FCMJ; ie, body weigh...

journal_title：International journal of sports physiology and performance

authors： Aboodarda SJ,Yusof A,Abu Osman NA,Thompson MW,Mokhtar AH

更新日期：2013-03-01 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