International journal of sports physiology and performance Impact Factor & Information

Publisher: Human Kinetics (Organization), Human Kinetics

Journal description

Current impact factor: 2.66

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 2.662
2013 Impact Factor 2.683
2012 Impact Factor 2.247
2011 Impact Factor 1.796

Impact factor over time

Impact factor

Additional details

5-year impact 3.47
Cited half-life 4.00
Immediacy index 0.65
Eigenfactor 0.00
Article influence 0.78
Website International Journal of Sports Physiology and Performance website
Other titles International journal of sports physiology and performance, IJSPP
ISSN 1555-0265
OCLC 58426616
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Human Kinetics

  • Pre-print
    • Archiving status unclear
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Author's post-print only (in PDF or other image capture format)
    • On the author's personal website(s) or institutional repository
    • Publisher's version/PDF cannot be used
    • Publisher copyright and source must be acknowledged
    • Must link to publisher version
    • Set statement to accompany deposit "as accepted for publication"
    • Publisher last contacted on 05/12/2013
  • Classification
    ​ blue

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: The aim of the present study was to investigate the hormonal, physiological and physical responses of simulated kickboxing competition and evaluate if there was a difference between winners and losers. Twenty athletes of regional and national level participated in the study (mean±SD; age: 21.3±2.7yrs; height: 170.0±5.0cm). Hormones [cortisol, testosterone, growth hormone (GH)], blood lactate [La] and glucose concentrations, as well as upper-body Wingate test, countermovement jump (CMJ) performances were measured before and after combats. Heart rate (HR) was measured throughout rounds (R) R1, R2 and R3 and rating of perceived exertion (RPE) was taken after each one. All combats were recorded and analysed to determine the length of different activity phases (high-intensity, low-intensity and referee pause) and the frequency of techniques. Hormones, glucose, [La], HR, and RPE increased (all P <.001) pre-to-post combat, while a decrease was observed for CMJ, Wingate test performance, body mass (all P <.001) and time of high-intensity activities (P =.005). There was no difference between winners and losers for hormonal, physiological and physical variables (P >.05). However, winners executed more jab-cross, total punches, roundhouse kicks, total kicks and total attacking techniques (all P <.042) compared to losers. Kickboxing is an intermittent physically demanding sport inducing changes in the stress-related hormones soliciting the anaerobic lactic system. Training should be orientated to enhance kickboxers' anaerobic lactic fitness and their ability to strike at a sufficient rate. Further investigation is needed to identify possible differences in tactical and mental abilities that offer some insight into what makes winners "winners".
    International journal of sports physiology and performance 09/2015; DOI:10.1123/ijspp.2015-0052
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    ABSTRACT: Purpose: We determined the intra- and inter-session (e.g., within-day and between-day) reliability in treadmill sprinting performance outcomes and associated running mechanics. Methods: After familiarization, thirteen male recreational sportsmen (team- and racket-sport background) performed on an instrumented treadmill three 5-s sprints with 2 min recovery on three different days, 5-7 days apart. Intra-session (comparison of the 3 sprints of the first session) and inter-session (comparison of the average of the three sprints across days) reliability of performance, kinetics and kinematics and spring-mass variables were assessed by intraclass correlation coefficients (ICCs) and coefficients of variation (CV%). Results: Intra-session reliability was high (ICC > 0.94 and CV < 8%). Inter-session reliability was 'good' for performance indices (0.83 < ICC < 0.89 and CV < 10%, yet with larger variability for mean velocity compared to distance covered or propulsive power) and kinetic parameters (ICC > 0.94 and CV < 5%, yet with larger variability for mean horizontal forces compared to mean vertical forces) and ranged between 'good' and 'high' for all kinematic (0.88 < ICC < 0.95 and CV ≤ 3.5%) and spring-mass variables (0.86 < ICC < 0.99 and CV ≤ 6.5%). Compared to intra-session, minimal detectable differences were on average twice larger for inter-session designs, except for sprint kinetics. Conclusion: Instrumented treadmill sprint offers a reliable method of assessing running mechanics during single sprints either performed on the same session or between days.
    International journal of sports physiology and performance 09/2015; DOI:10.1123/ijspp.2015-0145
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    ABSTRACT: Regular monitoring of adaptation to training is important for optimizing training load and recovery&comma; which is the main factor in successful training&period; Purpose&colon; The aim of this study was to investigate the usefulness of a novel submaximal running test in field conditions in predicting and tracking changes of endurance performance&period; Methods&colon; Thirty five endurance trained men and women &lpar;aged from 20 to 55 years&rpar; completed the 18-weeks endurance training program&period; Maximal incremental running test was performed at weeks 0&comma; 9 and 18 for determination of maximal oxygen consumption &lpar;VO2max&rpar; and running speed &lpar;RS&rpar; at exhaustion &lpar;RSpeak&rpar; and lactate thresholds &lpar;LT&rpar;&period; In addition&comma; the subjects performed weekly a three staged submaximal running test &lpar;SRT&rpar;&comma; including a post-exercise heart rate recovery &lpar;HRR&rpar; measurement&period; The subjects were retrospectively grouped into four clusters according to changes in SRT results&period; Results&colon; Large correlations &lpar;r&equals;0&period;60-0&period;89&rpar; were observed between RS during all stages of SRT&comma; and all endurance performance variables &lpar;VO2max&comma; RSpeak&comma; RS at LT2 and RS at LT1&rpar;&period; HRR correlated only with VO2max &lpar;r&equals;0&period;46&rpar;&period; Large relationships were also found between changes in RS during 80&percnt; and 90&percnt; HRmax stages of SRT and a change of RSpeak &lpar;r&equals;0&period;57&comma; r&equals;0&period;79&rpar;&period; In addition&comma; the cluster analysis revealed the different trends in RS during 80&percnt; and 90&percnt; stages during the training between the clusters&comma; which showed different improvements in VO2max and RSpeak&period; Conclusions&colon; The present submaximal test showed great potential as a practical tool for regular monitoring of individual adaptation to endurance training without time-consuming and expensive laboratory tests&period.
    International journal of sports physiology and performance 08/2015; DOI:10.1123/ijspp.2015-0366
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    ABSTRACT: To explore the association between in-season training load measures and injury risk in professional Rugby Union players. Methods This was a one-season prospective cohort study of 173 Professional Rugby Union players from four English Premiership teams. Training load (duration x session-RPE) and time-loss injuries were recorded for all players for all pitch and gym based sessions. Generalised estimating equations were used to model the association between in-season training load measures and injury risk in the subsequent week. Injury risk increased linearly with one-week loads and week-to-week changes in loads, with a 2 standard deviation (SD) increase in these variables (1245 AU and 1069 AU, respectively) associated with odds ratios of 1.68 (95% CI 1.05-2.68) and 1.58 (95% CI: 0.98-2.54). When compared with the reference group (<3684 AU), a significant non-linear effect was evident for four-week cumulative loads, with a likely beneficial reduction in injury risk associated with intermediate loads of 5932 to 8651 AU (OR: 0.55, 95% CI: 0.22-1.38) (this range equates to around four weeks of average in-season training load), and a likely harmful effect evident for higher loads of >8651 AU (OR: 1.39, 95% CI: 0.98-1.98). Players had an increased risk of injury if they had high one-week cumulative loads (1245 AU), or large week-to-week changes in load (1069 AU). In addition, a 'U-shaped' relationship was observed for four-week cumulative loads, with an apparent increase in risk associated with higher loads (>8651 AU). These measures should therefore be monitored to inform injury risk reduction strategies.
    International journal of sports physiology and performance 08/2015; DOI:10.1123/ijspp.2015-0187
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    ABSTRACT: To assess the effects of acute L-carnosine and β-alanine (Carn-BA) supplementation on isometric and dynamic tasks. Twelve healthy participants performed knee extensors maximal voluntary contractions (MVC) and countermovement jumps (CMJ) before and after a fatiguing protocol (45s continuous CMJ). Isometric and dynamic tests were performed four hours after Carn-BA (2g of L-carnosine and 2g of β-alanine) or placebo (PLA) ingestion, in random order. After the fatiguing protocol, blood lactate concentration ([La-]), general and muscular rate of perceived exertion (RPE), and muscular pain (after 24h and 48h from the end of the fatiguing protocol) were assessed. During the fatiguing protocol, significant decreases in jump height, and increases in contact time were found in both groups from the 15th second onwards to the end of the fatiguing protocol. Average contact time and jump height were respectively lower (-7%; P=0.018) and higher (+6%; P=0.025) in Carn-BA compared to PLA. After the fatiguing protocol, MVC decreased in both PLA and Carn-BA, but it was higher in Carn-BA compared to PLA (+15%, P=0.012), while CMJ did not change. Moreover, general RPE was lower and muscle pain at 24h was higher in Carn-BA compared to PLA, whereas muscular RPE and [La-] did not differ between conditions. Ingesting Carn-BA prior to exercise induced positive effects on MVC and CMJ after the fatiguing protocol and improved CMJ performance during the 45s continuous jumping effort, even when acutely supplemented. Furthermore, Carn-BA reduced the general RPE and increased muscular pain 24 h after the fatiguing task.
    International journal of sports physiology and performance 08/2015; DOI:10.1123/ijspp.2014-0507
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    ABSTRACT: To investigate strength and power development in elite rugby players during the different phases of a professional season. Sixteen professional rugby union athletes from an English premiership team were monitored for measures of lower body peak force, force at 50 ms, force at 100 ms (all isometric squat), and power (explosive hack squat). Athletes were assessed at the start of pre-season (T1), post pre-season (T2), mid-way through the competitive season (T3) and at the end of the competitive season (T4). Effect size statistics with magnitude based inferences were calculated to interpret differences in physical performance between the different stages of the season. Very likely beneficial increases in force at 50 ms (+16%, ES = 0.75 ± 0.4) and 100 ms (+14%, ES = 0.63 ± 0.4) were observed between T1-T2. A likely beneficial increase in power was observed between T2-T3 (+4%, ES = 0.31 ± 0.2). Between T3-T4, decreases in force at 50 ms (-6%, ES = -0.39 ± 0.3) and 100 ms (-9%, ES = -0.52 ± 0.4) occurred whilst peak force and power were maintained. Over the full season (T1-T4) clear beneficial increases in all measures of strength and power were identified. Meaningful increases in strength and power can be achieved in professional English premiership rugby players over a full playing season. The greatest opportunity for strength and power development occurs during pre to mid-season phases whilst these measures are maintained or decrease slightly during the latter stages of a season.
    International journal of sports physiology and performance 08/2015; DOI:10.1123/ijspp.2015-0337
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    ABSTRACT: No abstract available for this article.
    International journal of sports physiology and performance 08/2015; 10(6):673. DOI:10.1123/IJSPP.2015-0439
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    ABSTRACT: High levels of lean mass are important for collision-based sports, for the development of strength and power, which may also assist during contact situations. Whilst skinfold-based measures have been shown to be appropriate for cross-sectional assessments of body composition, their utility in tracking changes in lean mass is less clear. To determine the most effective method of quantifying changes in lean mass amongst rugby league athletes. Twenty-one professional rugby league players undertook body composition assessments on 2-3 occasions separated by ≥6 weeks, including bioelectrical impedance analysis (BIA), the lean mass index (LMI) and a skinfold-based prediction equation (SkF). Dual x-ray absorptiometry (DXA) provided a criterion measure of fat-free mass (FFM). Correlation coefficients (r) and standard errors of the estimate (SEE) were used as measures of validity for the estimates. All three practical estimates exhibited strong validity for cross-sectional assessments of FFM (r > 0.9, p < 0.001). The correlation between change scores was stronger for the LMI (r = 0.69, SEE 1.3 kg) and the SkF method (r = 0.66, SEE = 1.4 kg) compared to BIA (r = 0.50, SEE = 1.6 kg). The LMI is probably accurate in predicting changes in FFM as a skinfold-based prediction equation, and very likely to be more appropriate than the BIA method. The LMI offers an adequate, practical alternative for assessing in FFM amongst rugby league athletes.
    International journal of sports physiology and performance 07/2015; DOI:10.1123/ijspp.2015-0244