Validity of a Simple Method for Measuring Force-Velocity-Power Profile in Countermovement Jump.

abstract：:Purpose: The hyperbolic distance-time relationship can be used to profile running performance and establish critical speed (CS) and D' (the curvature constant of the speed-time relationship). Typically, to establish these parameters, multiple (3+) performance trials are required, which can be highly fatiguing and limi...

journal_title：International journal of sports physiology and performance

authors： Kordi M,Menzies C,Galbraith A

更新日期：2019-05-01 00:00:00

abstract：PURPOSE:To understand the validity of differential ratings of perceived exertion (dRPE) as a measure of girls' training and match internal loads. METHODS:Using the centiMax scale (CR100), session dRPE for breathlessness (sRPE-B) and leg muscle exertion (sRPE-L) were collected across a season of training (soccer, resis...

journal_title：International journal of sports physiology and performance

authors： Wright MD,Songane F,Emmonds S,Chesterton P,Weston M,Mclaren SJ

更新日期：2020-09-18 00:00:00

abstract：PURPOSE:To establish a specific player profile on body-composition parameters and to provide a data set of bioelectric impedances values for male volleyball players. METHODS:The study included 201 athletes (age 26.1 [5.4] y, height 191.9 [9.7] cm, weight 86.8 [10.8] kg) registered in the Italian volleyball divisions. ...

journal_title：International journal of sports physiology and performance

authors： Campa F,Toselli S

更新日期：2018-10-01 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: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：PURPOSE:To compare psychophysiological responses to 6 repeated-sprint sessions in normobaric hypoxia (RSH) and normoxia (RSN) in team-sport athletes during a 2-wk "live high-train low" training camp. METHODS:While residing under normobaric hypoxia (≥14 h/d, FiO2 14.5-14.2%), 23 lowland elite field hockey players perfo...

journal_title：International journal of sports physiology and performance

authors： Brocherie F,Millet GP,Girard O

更新日期：2017-01-01 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：PURPOSE:To establish the validity of smartphone photoplethysmography (PPG) and heart-rate sensor in the measurement of heart-rate variability (HRV). METHODS:29 healthy subjects were measured at rest during 5 min of guided breathing and normal breathing using smartphone PPG, a heart-rate chest strap, and electrocardiog...

journal_title：International journal of sports physiology and performance

authors： Plews DJ,Scott B,Altini M,Wood M,Kilding AE,Laursen PB

更新日期：2017-11-01 00:00:00

abstract：:Investigations into ventilatory, metabolic, and hematological changes with altitude training have been completed; however, there is a lack of research exploring potential gait-kinematic changes after altitude training, despite a common complaint of athletes being a lack of leg "turnover" on return from altitude traini...

journal_title：International journal of sports physiology and performance

authors： Stickford AS,Wilhite DP,Chapman RF

更新日期：2017-01-01 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：: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 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 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 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：PURPOSE:To compare the training-volume (TrV) distribution of Russian international-level male biathletes, female biathletes, and cross-country skiers (XC) during an annual cycle. METHODS:Day-to-day TrVs were recorded and averaged for a 5-year period for male biathletes (n = 6), female biathletes (n = 8), and XC (n = 1...

journal_title：International journal of sports physiology and performance

authors： Myakinchenko EB,Kriuchkov AS,Adodin NV,Feofilaktov V

更新日期：2020-08-19 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 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：PURPOSE:Assessing cardiopulmonary function during swimming is a complex and cumbersome procedure. Backward extrapolation is often used to predict peak oxygen uptake (VO2peak) during unimpeded swimming, but error can derive from a delay at the onset of VO2 recovery. The authors assessed the validity of a mathematical mo...

journal_title：International journal of sports physiology and performance

authors： Chaverri D,Schuller T,Iglesias X,Hoffmann U,Rodríguez FA

更新日期：2016-05-01 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:Ischemic preconditioning (IPC) through purposeful circulatory occlusion may enhance exercise performance. The value of IPC for improving performance is controversial owing to challenges with employing effective placebo controls. This study examines the efficacy of IPC versus a deceptive sham protocol for improv...

journal_title：International journal of sports physiology and performance

authors： Cheung CP,Slysz JT,Burr JF

更新日期：2019-10-11 00:00:00

abstract：PURPOSE:To describe the demand of recent World Cup (WC) races comparing top-10 (T10) and non-top-10 (N-T10) performances using power data. METHODS:Race data were collected in 1-d World Cup races during the 2012-2015 road cycling seasons. Seven female cyclists completed 49 WC races, finishing 25 times in T10 and 24 tim...

journal_title：International journal of sports physiology and performance

authors： Menaspà P,Sias M,Bates G,La Torre A

更新日期：2017-11-01 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: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：PURPOSE:The session rating of perceived exertion (RPE) is a practical and noninvasive method that allows a quantification of the internal training load (TL) in individual and team sports, but no study has investigated its construct validity in martial arts. Therefore, the purpose of this study was to examine the conver...

journal_title：International journal of sports physiology and performance

authors： Haddad M,Chaouachi A,Castagna C,Wong del P,Behm DG,Chamari K

更新日期：2011-06-01 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 examine variations in neuromuscular and hormonal status and their relationship to performance throughout a season of elite Australian Rules Football (ARF). METHODS:Fifteen elite ARF players performed a single jump (CMJ1) and 5 repeated countermovement jumps (CMJ5), and provided saliva samples for the analys...

journal_title：International journal of sports physiology and performance

authors： Cormack SJ,Newton RU,McGuigan MR,Cormie P

更新日期：2008-12-01 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 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：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：PURPOSE:To investigate the discrepancy between coach and athlete perceptions of internal load and notational analysis of external load in elite junior tennis. METHODS:Fourteen elite junior tennis players and 6 international coaches were recruited. Ratings of perceived exertion (RPEs) were recorded for individual drill...

journal_title：International journal of sports physiology and performance

authors： Murphy AP,Duffield R,Kellett A,Reid M

更新日期：2014-09-01 00:00:00