An analysis of pacing profiles of world-class racewalkers.

abstract：PURPOSE:To quantify possible differences in sprint mechanical outputs in handball and basketball players according to playing standard and position. METHODS:Sprint tests of 298 male players were analyzed. Theoretical maximal velocity (v0), horizontal force (F0), horizontal power (Pmax), force-velocity slope (SFV), rat...

journal_title：International journal of sports physiology and performance

authors： Haugen TA,Breitschädel F,Seiler S

更新日期：2019-10-02 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 investigate the effects of an extreme uphill marathon on the mechanical parameters that are likely to affect the energy cost of running (Cr). METHODS:Eleven runners (27-59 y) participated in the Etna SuperMarathon (43 km, 0-3063 m above sea level). Anthropometric characteristics, maximal explosive power of ...

journal_title：International journal of sports physiology and performance

authors： Lazzer S,Salvadego D,Taboga P,Rejc E,Giovanelli N,di Prampero PE

更新日期：2015-03-01 00:00:00

abstract：PURPOSE:To examine the effect of caffeine supplementation on dribbling speed in elite female and male basketball players. METHODS:A double-blind, counterbalanced, randomized, crossover design was utilized. Elite basketball players (n = 21; female, n = 10; male, n = 11; age = 18.3 ± 3.3 yr) completed placebo (3 mg·kg-1...

journal_title：International journal of sports physiology and performance

authors： Scanlan AT,Dalbo VJ,Conte D,Stojanović E,Stojiljković N,Stanković R,Antić V,Milanović Z

更新日期：2019-07-01 00:00:00

abstract：:The aim of this study was to compare 2 different methodological assessments when analyzing the relationship between performance and heart-rate (HR) -derived indices (resting HR [RHR] and HR variability [HRV]) to evaluate positive adaptation to training. The relative change in estimated maximum aerobic speed (MAS) and ...

journal_title：International journal of sports physiology and performance

authors： Plews DJ,Laursen PB,Kilding AE,Buchheit M

更新日期：2013-11-01 00:00:00

abstract：PURPOSE:This study investigated whether there is a correlation between time-trial performance and competitive performance capacity of male and female junior cross-country skiers and sought to explain sex-specific competitive performance capacity through multiple-regression modeling. METHODS:The International Ski Feder...

journal_title：International journal of sports physiology and performance

authors： Carlsson M,Carlsson T,Hammarström D,Malm C,Tonkonogi M

更新日期：2014-01-01 00:00:00

abstract：PURPOSE:To assess and compare the validity of internal and external Australian football (AF) training-load measures for predicting preseason variation of match-play exercise intensity (MEI sim/min) using a variable dose-response model. METHODS:A total of 21 professional male AF players completed an 18-wk preseason mac...

journal_title：International journal of sports physiology and performance

authors： Graham SR,Cormack S,Parfitt G,Eston R

更新日期：2019-02-01 00:00:00

abstract：PURPOSE:Previously it has been observed that, in well-trained 800-m athletes, VO2max is not attained during middle-distance running events on a treadmill, even when a race-type pacing strategy is adopted. Therefore, the authors investigated whether specialization in a particular running distance (400-m or 800-m) influe...

journal_title：International journal of sports physiology and performance

authors： James DV,Sandals LE,Draper SB,Maldonado-Martin S,Wood DM

更新日期：2007-06-01 00:00:00

abstract：PURPOSE:To quantify the power-output demands of men's road-cycling stage racing using a direct measure of power output. METHODS:Power-output data were collected from 207 races over 6 competition years on 31 Australian national male road cyclists. Subjects performed a maximal graded exercise test in the laboratory to d...

journal_title：International journal of sports physiology and performance

authors： Ebert TR,Martin DT,Stephens B,Withers RT

更新日期：2006-12-01 00:00:00

abstract：PURPOSE:Despite the volume of available literature focusing on marathon running and the prediction of performance, no single prediction equations exists that is accurate for all runners of varying experiences and abilities. Indeed the relative merits and utility of the existing equations remain unclear. Thus, the aim o...

journal_title：International journal of sports physiology and performance

authors： Keogh A,Smyth B,Caulfield B,Lawlor A,Berndsen J,Doherty C

更新日期：2019-10-01 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：:An activity profile of competitive 3 × 2-min novice-level amateur boxing was created based on video footage and postbout blood [La] in 32 male boxers (mean ± SD) age 19.3 ± 1.4 y, body mass 62.6 ± 4.1 kg. Winners landed 18 ± 11 more punches than losers by applying more lead-hand punches in round 1 (34.2 ± 10.9 vs 26.5...

journal_title：International journal of sports physiology and performance

authors： Davis P,Wittekind A,Beneke R

更新日期：2013-01-01 00:00:00

abstract：PURPOSE:To quantify changes in skeletal-muscle oxygenation and pulmonary O2 uptake (V̇O2) after an extreme ultratrail running bout. METHODS:Before (PRE) and after (POST) the race (330-km, 24000 D±), profiles of vastus lateralis muscle oxygenation (ie, oxyhemoglobin [O2Hb], deoxyhemoglobin [HHb], and tissue oxygenation...

journal_title：International journal of sports physiology and performance

authors： Vernillo G,Brighenti A,Limonta E,Trabucchi P,Malatesta D,Millet GP,Schena F

更新日期：2017-04-01 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：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：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: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

abstract：PURPOSE:To determine the consistency of commercially available devices used for measuring elevation gain in outdoor activities and sports. METHODS:Two separate observational validation studies were conducted. Garmin (Forerunner 310XT, Edge 500, Edge 750, and Edge 800; with and without elevation correction) and SRM (Po...

journal_title：International journal of sports physiology and performance

authors： Menaspà P,Impellizzeri FM,Haakonssen EC,Martin DT,Abbiss CR

更新日期：2014-09-01 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:The purpose of this study was to evaluate the effectiveness of repetitions to fatigue (RTF) using absolute and relative muscle-endurance performances to estimate 1-repetition-maximum (1-RM) bench-press performance in high school male athletes. METHODS:Members of high school athletic teams (n = 118, age = 16.5 ...

journal_title：International journal of sports physiology and performance

authors： Mayhew JL,Hill SP,Thompson MD,Johnson EC,Wheeler L

更新日期：2007-09-01 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:This study examined the influence of 10 days of intensified training on salivary cortisol and testosterone responses to 30-min, high-intensity cycling (55/80) in a group of male elite triathletes. METHODS:Seven elite male triathletes (age 19 ± 1 y, VO2max 67.6 ± 4.5 mL · kg-1 · min-1) completed the study. Swim...

journal_title：International journal of sports physiology and performance

authors： Hough J,Robertson C,Gleeson M

更新日期：2015-10-01 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 determine if the mathematical model used to derive critical power could be used to identify the critical resistance (CR) for the deadlift; compare predicted and actual repetitions to failure at 50%, 60%, 70%, and 80% 1-repetition maximum (1RM); and compare the CR with the estimated sustainable resistance for...

journal_title：International journal of sports physiology and performance

authors： Dinyer TK,Byrd MT,Vesotsky AN,Succi PJ,Bergstrom HC

更新日期：2019-10-10 00:00:00

abstract：UNLABELLED:The contractile history of muscle can potentiate electrically evoked force production. A link to voluntary force production, related in part to an increase in reflex excitability, has been suggested. PURPOSE:Our purpose was to quantify the effect of postactivation potentiation on voluntary force production ...

journal_title：International journal of sports physiology and performance

authors： Hodgson MJ,Docherty D,Zehr EP

更新日期：2008-06-01 00:00:00

abstract：UNLABELLED:Anthropometrical and physical characteristics have been used to distinguish players of different competition levels and position groups; however, there is no literature on rugby sevens. PURPOSE:To compare the anthropometrical and physical characteristics of international and provincial rugby sevens players ...

journal_title：International journal of sports physiology and performance

authors： Ross A,Gill ND,Cronin JB

更新日期：2015-09-01 00:00:00

abstract：PURPOSE:To provide 2 general equations to estimate the maximum possible number of repetitions (XRM) from the mean velocity (MV) of the barbell and the MV associated with a given number of repetitions in reserve, as well as to determine the between-sessions reliability of the MV associated with each XRM. METHODS:After ...

journal_title：International journal of sports physiology and performance

authors： García-Ramos A,Torrejón A,Feriche B,Morales-Artacho AJ,Pérez-Castilla A,Padial P,Haff GG

更新日期：2018-03-01 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 verify whether relative age effects (RAEs) occur among young male and female Swiss Alpine skiers of different age groups and performance levels. In addition, the efficacy of normalizing performance in physical tests to height and body mass to attenuate RAEs eventually present was tested. METHODS:The Swiss S...

journal_title：International journal of sports physiology and performance

authors： Gorski T,Rosser T,Hoppeler H,Vogt M

更新日期：2016-05-01 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