Hamstring activation during lower body resistance training exercises.

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:The purpose of this investigation was to quantify maximal aerobic power (VO2max) in soccer as a function of performance level, position, age, and time of season. In addition, the authors examined the evolution of VO2max among professional players over a 23-y period. METHODS:1545 male soccer players (22 ± 4 y, ...

journal_title：International journal of sports physiology and performance

authors： Tønnessen E,Hem E,Leirstein S,Haugen T,Seiler S

更新日期：2013-05-01 00:00:00

abstract：UNLABELLED:Energicer is a new solution which purportedly increases evaporative cooling during exercise in the heat. PURPOSE:To evaluate the effect of Energicer on performance during indoor rowing in a warm environment. METHODS:Eighteen highly trained rowers (age 23.3 ± 6.7 y, height 181.3 ± 6.0 cm, mass 76.7 ± 5.0 kg...

journal_title：International journal of sports physiology and performance

authors： Mujika I,González De Txabarri R,Pyne D

更新日期：2010-09-01 00:00:00

abstract：:Intensive training periods may negatively influence immune function, but the immunological consequences of specific high-intensity-training (HIT) prescriptions are not well defined. PURPOSE:To explore whether 3 different HIT prescriptions influence multiple health-related biomarkers and whether biomarker responses to...

journal_title：International journal of sports physiology and performance

authors： Hanstock HG,Govus AD,Stenqvist TB,Melin AK,Sylta Ø,Torstveit MK

更新日期：2019-11-21 00:00:00

abstract：:The aim of the current study was to analyze the temporal effects that unsportsmanlike fouls may have on basketball teams' scoring performance under consideration of context-related variables. The authors analyzed 130 unsportsmanlike fouls from 362 elite basketball games (men's and women's Olympic Games, European and W...

journal_title：International journal of sports physiology and performance

authors： Gómez MÁ,Ortega Toro E,Furley P

更新日期：2016-07-01 00:00:00

abstract：PURPOSE:To examine the difference in distance measured by two global positioning system (GPS) units of the same model worn by the same player while performing movements common to team sports. METHODS:Twenty elite Australian football players completed two trials of the straight line movement (10, 20, 40 m) at four spee...

journal_title：International journal of sports physiology and performance

authors： Jennings D,Cormack S,Coutts AJ,Boyd LJ,Aughey RJ

更新日期：2010-12-01 00:00:00

abstract：PURPOSE:To determine the validity of the Velocomp PowerPod power meter in comparison with the Verve Cycling InfoCrank power meter. METHODS:This research involved 2 separate studies. In study 1, 12 recreational male road cyclists completed 7 maximal cycling efforts of a known duration (2 times 5 s and 15, 30, 60, 240, ...

journal_title：International journal of sports physiology and performance

authors： Merkes PFJ,Menaspà P,Abbiss CR

更新日期：2019-10-02 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:The authors tested different loading schemes for the number of repetitions completed during multiple sets of resistance exercise. METHODS:Twenty-four resistance-trained men (age 24.0 ± 4.5 y, body mass 78.3 ±10.2 kg, height 177 ± 7 cm) were tested over a 5-wk period. During week 1 a 10-repetition maximum (10RM...

journal_title：International journal of sports physiology and performance

authors： Medeiros HS Jr,Mello RS,Amorim MZ,Koch AJ,Machado M

更新日期：2013-07-01 00:00:00

abstract：CONTEXT:Repeat-high-intensity efforts (RHIEs) have recently been shown to occur at critical periods of rugby league matches. PURPOSE:To examine the effect that caffeine has on RHIE performance in rugby league players. METHODS:Using a double-blind, placebo-controlled, crossover design, 11 semiprofessional rugby league...

journal_title：International journal of sports physiology and performance

authors： Wellington BM,Leveritt MD,Kelly VG

更新日期：2017-02-01 00:00:00

abstract：PURPOSE:To establish appropriate work intensity for interval training that would elicit maximal oxygen uptake (VO2max) for well-trained swimmers. METHODS:Twelve male competitive swimmers completed an incremental protocol to determine the minimum velocity at VO2max (νVO2max) and, in randomized order, 3 square-wave exer...

journal_title：International journal of sports physiology and performance

authors： Sousa A,Vilas-Boas JP,Fernandes RJ,Figueiredo P

更新日期：2017-08-01 00:00:00

abstract：PURPOSE:Recommendations state that to acquire the greatest benefit from heat-acclimation, the clock time of heat-acclimation sessions should match that of expected exercise-heat stress. It remains unknown if adaptations by postexercise hot-water immersion (HWI) demonstrate time-of-day-dependent adaptations. Thus, the a...

journal_title：International journal of sports physiology and performance

authors： Zurawlew MJ,Mee JA,Walsh NP

更新日期：2018-11-19 00:00:00

abstract：BACKGROUND:Sprint running acceleration is a key feature of physical performance in team sports, and recent literature shows that the ability to generate large magnitudes of horizontal ground-reaction force and mechanical effectiveness of force application are paramount. The authors tested the hypothesis that very-heavy...

journal_title：International journal of sports physiology and performance

authors： Morin JB,Petrakos G,Jiménez-Reyes P,Brown SR,Samozino P,Cross MR

更新日期：2017-07-01 00:00:00

abstract：UNLABELLED:The combined supplementation of caffeine (CAF) and sodium bicarbonate (NaHCO3) may have a potential ergogenic effect during intermittent-exercise tasks such as judo; however, its effect in this sport has not been tested. PURPOSE:To investigate the isolated and combined effects of CAF and NaHCO3 on judo perf...

journal_title：International journal of sports physiology and performance

authors： Felippe LC,Lopes-Silva JP,Bertuzzi R,McGinley C,Lima-Silva AE

更新日期：2016-03-01 00:00:00

abstract：:The aim of the current study was to analyze the temporal effects that unsportsmanlike fouls may have on basketball teams' scoring performance under consideration of context-related variables. The authors analyzed 130 unsportsmanlike fouls from 362 elite basketball games (men's and women's Olympic Games, European and W...

journal_title：International journal of sports physiology and performance

authors： Gómez MÁ,Toro EO,Furley P

更新日期：2016-07-01 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：PURPOSE:To determine different relationships between, and predictive ability of, performance variables at intermediate distances with finishing time in elite male 10,000-m runners. METHODS:Official electronic finishing and 100-m split times of the men's 10,000-m finals at the 2008 and 2016 Olympic Games and IAAF World...

journal_title：International journal of sports physiology and performance

authors： Renfree A,Casado A,Pellejero G,Hanley B

更新日期：2020-09-21 00:00:00

abstract：PURPOSE:To investigate the physical and physiological response to different formats of various-sided games. METHODS:Eighteen elite women's soccer players wore 15-Hz global positioning system devices and heart-rate (HR) monitors during various-sided games (small, 4 vs 4 and 5 vs 5; medium, 6 vs 6 and 7 vs 7; large, 8 v...

journal_title：International journal of sports physiology and performance

authors： Mara JK,Thompson KG,Pumpa KL

更新日期：2016-10-01 00:00:00

abstract：PURPOSE:To observe voluntary fluid and carbohydrate intakes and thermoregulatory characteristics of road cyclists during 2 multiday, multiple-stage races in temperate conditions. METHODS:Ten internationally competitive male cyclists competed in 2 stage races (2009 Tour of Gippsland, T1, n = 5; 2010 Tour of Geelong, T2...

journal_title：International journal of sports physiology and performance

authors： Ross ML,Stephens B,Abbiss CR,Martin DT,Laursen PB,Burke LM

更新日期：2014-05-01 00:00:00

abstract：PURPOSE:To analyze how many finalists of the International Association of Athletics Federations (IAAF) World Junior Championships (WJCs) in the middle- and long-distance track events had dropped out from high-level competitions. METHODS:Starting from 2002, the 8 male and the 8 female finalists in the middle- and long-...

journal_title：International journal of sports physiology and performance

authors： Pizzuto F,Bonato M,Vernillo G,La Torre A,Piacentini MF

更新日期：2017-03-01 00:00:00

abstract：PURPOSE:To assess the utility of a self-paced maximal oxygen uptake (VO2max) test (SPV) in eliciting an accurate measure of VO2max in comparison with a traditional graded exercise test (GXT) during motorized treadmill exercise. DESIGN:This was a cross-sectional experimental study whereby recreationally trained men (n ...

journal_title：International journal of sports physiology and performance

authors： Faulkner J,Mauger AR,Woolley B,Lambrick D

更新日期：2015-01-01 00:00:00

abstract：CONTEXT:Muscle imbalances aid in the identification of athletes at risk for lower-extremity injury. Little is known regarding the influence that leg preference or playing position may have on lower-extremity muscle strength and asymmetry. PURPOSE:To investigate lower-extremity strength profiles in rugby union athletes...

journal_title：International journal of sports physiology and performance

authors： Brown SR,Brughelli M,Bridgeman LA

更新日期：2016-05-01 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 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:Caffeine is frequently used by athletes as an ergogenic aid. Various alternate forms of caffeine administration are available, which may produce different effects. This investigation compares the effects of different forms of caffeine supplementation on 5-km running performance, and the relationship between ath...

journal_title：International journal of sports physiology and performance

authors： Whalley PJ,Dearing CG,Paton CD

更新日期：2019-10-11 00:00:00

abstract：:Recent research has analyzed the genetic factors that influence world-class athletic status. Much of what we know comes from association studies, with the ACE I/D and ACTN3 R577X polymorphisms having been extensively studied. The association between the ACTN3 R577X variation and elite athlete status in power sports is...

journal_title：International journal of sports physiology and performance

authors： Lucía A,Morán M,Zihong H,Ruiz JR

更新日期：2010-03-01 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: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：PURPOSE:The purpose of this investigation was to determine the effect of stable and unstable conditions on one repetition maximum strength and muscle activity during dynamic squatting using absolute and relative loading. METHODS:Ten recreationally weight-trained males participated in this study (age = 24.1 +/- 2.0 y, ...

journal_title：International journal of sports physiology and performance

authors： McBride JM,Larkin TR,Dayne AM,Haines TL,Kirby TJ

更新日期：2010-06-01 00:00:00

abstract：PURPOSE:The genetic influence on the attainment of elite athlete status is well established, with a number of polymorphisms found to be more common in elite athletes than in the general population. As such, there is considerable interest in understanding whether this information can be utilized to identify future elite...

journal_title：International journal of sports physiology and performance

authors： Pickering C,Kiely J

更新日期：2020-12-03 00:00:00