Are oxygen uptake kinetics modified when using a respiratory snorkel?

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 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：: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 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: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：:The effects of an enforced fast start on long-distance performance are controversial and seem to depend on the athlete's capacity to delay and tolerate metabolic disruption. The aim of this study was to investigate the effects of an enforced start on 10-km-running performance and the influence of the some physiologica...

journal_title：International journal of sports physiology and performance

authors： do Carmo EC,Barroso R,Renfree A,Gil S,Tricoli V

更新日期：2016-09-01 00:00:00

abstract：AIM:The purpose of this brief report was to examine the net oxygen cost, oxygen kinetics, and kinematics of level and uphill running in elite ultra-trail runners. METHODS:Twelve top-level ultra-distance trail runners performed two 5-minute stages of treadmill running (level, 0%, men 15 km·h-1, women 13 km·h-1; and uph...

journal_title：International journal of sports physiology and performance

authors： Willis SJ,Gellaerts J,Mariani B,Basset P,Borrani F,Millet GP

更新日期：2019-07-01 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: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：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 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：: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: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：:Evidence indicates that low-level laser therapy (LLLT) minimizes fatigue effects on muscle performance. However, the ideal LLLT dosage to improve athletes'performance during sports activities such as cycling is still unclear. Therefore, the goal of this study was to investigate the effects of different LLLT dosages on...

journal_title：International journal of sports physiology and performance

authors： Lanferdini FJ,Bini RR,Baroni BM,Klein KD,Carpes FP,Vaz MA

更新日期：2018-01-01 00:00:00

abstract：:The purpose was to develop and validate portable force-measurement devices for recording push and pull forces applied by each foot to the foot bar of a kayak and the horizontal force at the seat. A foot plate on a single-point force transducer mounted on the kayak foot bar underneath each foot allowed the push and pul...

journal_title：International journal of sports physiology and performance

authors： Nilsson JE,Rosdahl HG

更新日期：2014-03-01 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: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：PURPOSE:The aim of this study was to describe the pacing profiles used by racewalkers competing in IAAF World Championships. METHODS:The times for each 5-km segment were obtained for 225 men competing over 20 km, 214 women competing over 20 km, and 232 men competing over 50 km, of whom 49 did not finish. Athletes were...

journal_title：International journal of sports physiology and performance

authors： Hanley B

更新日期：2013-07-01 00:00:00

abstract：PURPOSE:To examine the validity and reliability of a novel futsal special performance test (FSPT) as a measure of futsal performance and skills. METHODS:Thirty-six futsal players with different levels of experience were recruited and divided into 2 groups (elite and nonelite). Players participated in 4 sessions (at le...

journal_title：International journal of sports physiology and performance

authors： Farhani F,Rajabi H,Negaresh R,Ali A,Amani Shalamzari S,Baker JS

更新日期：2019-09-01 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

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 determine the effects of prolonged simulated tennis on performance and the ergogenic potential of caffeine, carbohydrates, and cooling. METHODS:Twelve highly trained male tennis players (age 18.3 +/- 3.0 y, height 178.8 +/- 8.5 cm, body mass 73.95 +/- 12.30 kg, mean +/- SD) performed 4 simulated matches (2 ...

journal_title：International journal of sports physiology and performance

authors： Hornery DJ,Farrow D,Mujika I,Young WB

更新日期：2007-12-01 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: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：PURPOSE:The main purpose of the present study was to quantify the match running demands and physiological intensities of AF field and boundary umpires during match play. METHODS:Thirty-five AF umpires [20 field (age: 24.7 ± 7.7 y, body mass: 74.3 ± 7.1 kg, sum of 7 skinfolds: 67.8 ± 18.8 mm); 15 boundary (age: 29.6 ± ...

journal_title：International journal of sports physiology and performance

authors： Elsworthy N,Dascombe BJ

更新日期：2011-12-01 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：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：: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:To (1) compare the pacing strategies of different-level open-water swimmers during the 10-km race of the FINA 2015 Swimming World Championships and (2) relate these pacing strategies to the race performance. METHODS:Final and intermediate split times, as well as intermediate race positions, from the 10-km race...

journal_title：International journal of sports physiology and performance

authors： Rodriguez L,Veiga S

更新日期：2018-07-01 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