International journal of sports physiology and performance最新文献_第8页

Which Strength Manifestation Is More Related to Regional Swimmers' Performance and In-Water Forces? Maximal Neuromuscular Capacities Versus Maximal Mechanical Maintenance Capacity. 哪种力量表现与区域游泳运动员的成绩和水中力量更相关？最大神经肌肉能力与最大机械维持能力。

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-04-16 DOI: 10.1123/ijspp.2023-0475

Sergio Miras-Moreno, Ó. López-Belmonte, A. García‐Ramos, R. Arellano, J. Ruiz-Navarro

{"title":"Which Strength Manifestation Is More Related to Regional Swimmers' Performance and In-Water Forces? Maximal Neuromuscular Capacities Versus Maximal Mechanical Maintenance Capacity.","authors":"Sergio Miras-Moreno, Ó. López-Belmonte, A. García‐Ramos, R. Arellano, J. Ruiz-Navarro","doi":"10.1123/ijspp.2023-0475","DOIUrl":"https://doi.org/10.1123/ijspp.2023-0475","url":null,"abstract":"PURPOSE\u0000To explore the association of the load-velocity (L-V) relationship variables and ability to maintain maximal mechanical performance during the prone bench-pull exercise with sprint swimming performance and in-water forces.\u0000\u0000\u0000METHODS\u0000Eleven competitive adult male swimmers (50-m front crawl World Aquatics points: 488 [66], performance level 4) performed 1 experimental session. The L-V relationship variables (L0 [ie, maximal theoretical load at 0 velocity]; v0 [ie, maximal theoretical velocity at 0 load], and Aline [ie, area under the L-V relationship]) and maximal mechanical maintenance capacity were assessed at the beginning of the session. Afterward, sprint swimming performance and in-water force production were tested through a 50-m front-crawl all-out trial and 15-s fully-tethered swimming, respectively.\u0000\u0000\u0000RESULTS\u0000Only v0 presented high positive associations with 50-m time and swimming kinematics (r > .532; P < .046). The L0, v0, and Aline showed very high positive associations with the in-water forces during tethered swimming (r > .523; P < .049). However, the ability to maintain maximal mechanical performance, assessed by the mean velocity decline during the prone bench pull, was only significantly correlated with stroke rate (r = -.647; P = .016) and stroke index (r = .614; P = .022).\u0000\u0000\u0000CONCLUSIONS\u0000These findings indicate that maximal neuromuscular capacities, especially v0, have a stronger correlation with swimming performance and in-water force production than the ability to maintain maximal mechanical performance in level 4 swimmers.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140696508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Ingredient Preworkout Supplementation Compared With Caffeine and a Placebo Does Not Improve Repetitions to Failure in Resistance-Trained Women. 与咖啡因和安慰剂相比，多种成分的预锻炼补充剂并不能提高抗阻训练女性的失败重复率。

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-04-12 DOI: 10.1123/ijspp.2023-0415

Mariah Snyder, Christi Brewer, Katrina Taylor

{"title":"Multi-Ingredient Preworkout Supplementation Compared With Caffeine and a Placebo Does Not Improve Repetitions to Failure in Resistance-Trained Women.","authors":"Mariah Snyder, Christi Brewer, Katrina Taylor","doi":"10.1123/ijspp.2023-0415","DOIUrl":"https://doi.org/10.1123/ijspp.2023-0415","url":null,"abstract":"There has been an increase in the use of commercially available multi-ingredient preworkout supplements (MIPS); however, there are inconsistencies regarding the efficacy of MIPS in resistance-trained women.\u0000\u0000\u0000PURPOSE\u0000To determine the effect of varying doses of MIPS compared with caffeine only (C) and a placebo (PL) on resistance-training performance in trained women.\u0000\u0000\u0000METHODS\u0000Ten women (21.5 [2.3] y) completed 1-repetition-maximum tests at baseline for leg press and bench press. A within-group, double-blind, and randomized design was used to assign supplement drinks (ie, PL, C, MIPS half scoop [MIPS-H], and MIPS full scoop [MIPS-F]). Repetitions to failure were assessed at 75% and 80% to 85% of 1-repetition maximum for bench and leg press, respectively. Total performance volume was calculated as load × sets × repetitions for each session. Data were analyzed using a 1-way repeated-measures analysis of variance and reported as means and SDs.\u0000\u0000\u0000RESULTS\u0000There were no differences in repetitions to failure for bench press (PL: 14.4 [3.2] repetitions, C: 14.4 [2.9] repetitions, MIPS-H: 14.2 [2.6] repetitions, MIPS-F: 15.1 [3.1] repetitions; P = .54) or leg press (PL: 13.9 [7.8] repetitions, C: 10.8 [5.9] repetitions, MIPS-H: 13.1 [7.1] repetitions, MIPS-F: 12.4 [10.7] repetitions; P = .44). Furthermore, there were no differences in total performance volume across supplements for bench press (PL: 911.2 [212.8] kg, C: 910.7 [205.5] kg, MIPS-H: 913.6 [249.3] kg, MIPS-F: 951.6 [289.6] kg; P = .39) or leg press (PL: 4318.4 [1633.6] kg, C: 3730.0 [1032.5] kg, MIPS-H: 4223.0 [1630.0] kg, MIPS-F: 4085.5 [2098.3] kg; P = .34).\u0000\u0000\u0000CONCLUSIONS\u0000Overall, our findings suggest that caffeine and MIPS do not provide ergogenic benefits for resistance-trained women in delaying muscular failure.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140710349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sport Science, Geopolitics, and How Each of Us Can Make a Difference. 体育科学、地缘政治以及我们每个人如何才能有所作为。

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-04-10 DOI: 10.1123/ijspp.2024-0108

J. D. de Koning, Carl Foster, D. Pyne, Ralph Beneke, Ø. Sandbakk

引用次数: 0

The Relationship of Open- and Closed-Kinetic-Chain Rate of Force Development With Jump Performance Following Anterior Cruciate Ligament Reconstruction. 前十字韧带重建术后开放式和封闭式动力学链的力量发展速度与跳跃成绩的关系。

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-04-09 DOI: 10.1123/ijspp.2023-0361

Megan C Graham, K. Reeves, Tereza Janatova, B. Noehren

{"title":"The Relationship of Open- and Closed-Kinetic-Chain Rate of Force Development With Jump Performance Following Anterior Cruciate Ligament Reconstruction.","authors":"Megan C Graham, K. Reeves, Tereza Janatova, B. Noehren","doi":"10.1123/ijspp.2023-0361","DOIUrl":"https://doi.org/10.1123/ijspp.2023-0361","url":null,"abstract":"PURPOSE\u0000To determine between-limbs differences in isometric rate of force development (RFD) measured during open- (OKC) and closed-kinetic-chain (CKC) strength testing and establish which method had the strongest relationship to single-leg vertical-jump performance and knee mechanics after anterior cruciate ligament (ACL) reconstruction.\u0000\u0000\u0000METHODS\u0000Subjects (n = 19) 1 to 5 years from ACL reconstruction performed isometric knee extensions (OKC), unilateral isometric midthigh pulls (CKC), and single-leg vertical jumps on the ACL-involved and -noninvolved limbs. Between-limbs differences were assessed using paired t tests, and the relationship between RFD, jump performance, and knee mechanics was assessed using correlation coefficients (r; P ≤ .05).\u0000\u0000\u0000RESULTS\u0000There were significant between-limbs differences in OKC RFD (P = .008, d = -0.69) but not CKC RFD. OKC RFD in the ACL-involved limb had a strong association with jump height (r = .64, P = .003), knee-joint power (r = .72, P < .001), and peak knee-flexion angle (r = .72, P = .001). CKC RFD in the ACL-involved limb had a strong association with jump height (r = .65, P = .004) and knee-joint power (r = .67, P = .002) but not peak knee-flexion angle (r = .40, P = .09).\u0000\u0000\u0000CONCLUSIONS\u0000While both OKC and CKC RFD were strongly related to jump performance and knee-joint power, OKC RFD was able to detect between-limbs RFD asymmetries and was strongly related to knee-joint kinematics. These findings indicate that isometric knee extension may be optimal for assessing RFD after ACL reconstruction.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140721461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum. Absence of Monotony and Strain Effects on Referees' Physical Performance During International Basketball Federation World Cup Basketball Competition. 勘误。国际篮联世界杯篮球赛期间裁判员的体能表现缺乏单调性和应变效应。

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-04-04 DOI: 10.1123/ijspp.2024-0142

International Journal of Sports Phy

引用次数: 0

Is the 5-Minute Time-Trial Cycling Test a Valid Predictor of Maximal Oxygen Uptake? An External Cross-Validation Study. 5 分钟计时单车测试是最大摄氧量的有效预测指标吗？外部交叉验证研究

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-04-03 DOI: 10.1123/ijspp.2023-0330

F. Borszcz, Artur Ferreira Tramontin, R. D. de Lucas, Vitor Pereira Costa

{"title":"Is the 5-Minute Time-Trial Cycling Test a Valid Predictor of Maximal Oxygen Uptake? An External Cross-Validation Study.","authors":"F. Borszcz, Artur Ferreira Tramontin, R. D. de Lucas, Vitor Pereira Costa","doi":"10.1123/ijspp.2023-0330","DOIUrl":"https://doi.org/10.1123/ijspp.2023-0330","url":null,"abstract":"PURPOSE\u0000This study aimed to cross-validate a recently proposed equation for the prediction of maximal oxygen uptake (V˙O2max) in cycling exercise by using the average power output normalized by the body mass from a 5-minute time trial (RPO5-min) as the independent variable. Further, the study aimed to update the predictive equation using Bayesian informative prior distributions and meta-analysis.\u0000\u0000\u0000METHODS\u0000On different days, 49 male cyclists performed an incremental graded exercise test until exhaustion and a 5-minute time trial on a stationary cycle ergometer. We compared the actual V˙O2max with the predicted value obtained from the RPO5-min, using a modified Bayesian Bland-Altman agreement analysis. In addition, this study updated the data on the linear regression between V˙O2max and RPO5-min, by incorporating information from a previous study as a Bayesian informative prior distribution or via meta-analysis.\u0000\u0000\u0000RESULTS\u0000On average, the predicted V˙O2max using RPO5-min underestimated the actual V˙O2max by -6.6 mL·kg-1·min-1 (95% credible interval, -8.6 to -4.7 mL·kg-1·min-1). The lower and upper 95% limits of agreement were -17.2 (-22.7 to -12.3) and 3.8 (-1.0 to 9.5) mL·kg-1·min-1, respectively. When the current study's data were analyzed using the previously published data as a Bayesian informative prior distribution, the accuracy of predicting sample means was found to be better when compared with the data combined via meta-analyses.\u0000\u0000\u0000CONCLUSIONS\u0000The proposed equation presented systematic bias in our sample, in which the prediction underestimated the actual V˙O2max. We provide an updated equation using the previous one as the prior distribution, which could be generalized to a greater audience of cyclists.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140746966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strategies to Involve End Users in Sport-Science Research. 让最终用户参与体育科学研究的战略。

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-03-20 Print Date: 2024-05-01 DOI: 10.1123/ijspp.2024-0076

Christopher J Stevens, Christian Swann

引用次数: 0

Influence of Amputation on Kinetic Chain Musculature Activity During Basic and Modified Core Exercises. 截肢对基本和改良核心运动中运动链肌肉活动的影响

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-03-20 Print Date: 2024-05-01 DOI: 10.1123/ijspp.2023-0215

Kaiqi Liu, Linhong Ji, Yijia Lu

{"title":"Influence of Amputation on Kinetic Chain Musculature Activity During Basic and Modified Core Exercises.","authors":"Kaiqi Liu, Linhong Ji, Yijia Lu","doi":"10.1123/ijspp.2023-0215","DOIUrl":"10.1123/ijspp.2023-0215","url":null,"abstract":"Purpose: Core strength is vital for athletic performance, and many more exercises that involve the kinetic chain have been designed for able-bodied athletes. Disabilities that impair the kinetic chain can reduce the effectiveness of strength training. However, the impact of amputation on core strength training of people with disabilities and its underlying mechanism remains unclear. This study aimed to evaluate the muscle activation patterns and levels in athletes with amputation during 4 basic and modified weight-bearing core strength-training exercises.Methods: Fifteen elite athletes with unilateral amputation (170.6 [7.3] cm; 63.9 [11.9] kg; 25.9 [5.3] y) volunteered for this study. Surface electromyography was used to measure the muscle activity mainly in the lumbopelvic-hip complex-stabilizing muscles during 4 kinetic chain trunk exercises with and without modifications.Results: The significance level was set at α = .05. The results showed a significant difference in muscle activation between different body sides (P < .05). Specifically, amputation on the support position resulted in a diagonal pattern of muscle activation, and amputation on the free distal segments resulted in a unilateral dominant pattern with higher activation in muscles on the nonamputated side (P < .05). Modifications led to significant decreases in muscle activation asymmetry index (P < .05).Conclusions: Amputation caused muscle activation asymmetry and 2 activation patterns. Modifications by enhancing proximal stability and adjusting distal loading effectively reduced the asymmetry of muscle activation. Coaches and clinicians can use these results to tailor exercises for athletes with disabilities in training and rehabilitation.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140174578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum. Addressing Circadian Disruptions in Visually Impaired Paralympic Athletes. 勘误。解决视障残奥运动员的昼夜节律紊乱问题。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2024-03-20 Print Date: 2024-05-01 DOI: 10.1123/ijspp.2024-0123

引用次数: 0

Investigating the Relevance of Maximal Speed and Acceleration in Varsity-Level Female Ice Hockey Players. 研究校级女子冰球运动员最大速度和加速度的相关性。

IF 3.3 2区医学

International journal of sports physiology and performance Pub Date : 2024-03-19 Print Date: 2024-05-01 DOI: 10.1123/ijspp.2023-0417

Alexander S D Gamble, Kyle M A Thompson, Jessica L Bigg, Christopher Pignanelli, Lawrence L Spriet, Jamie F Burr

{"title":"Investigating the Relevance of Maximal Speed and Acceleration in Varsity-Level Female Ice Hockey Players.","authors":"Alexander S D Gamble, Kyle M A Thompson, Jessica L Bigg, Christopher Pignanelli, Lawrence L Spriet, Jamie F Burr","doi":"10.1123/ijspp.2023-0417","DOIUrl":"10.1123/ijspp.2023-0417","url":null,"abstract":"Purpose: To characterize and compare female ice hockey players' peak skating speed and acceleration ability during linear sprints and gameplay. We also sought to quantify the time spent at various speeds and the frequency of accelerations at different thresholds during games.Methods: Seventeen varsity-level female ice hockey players (20 [1.4] y, 68.9 [4.9] kg, 167.6 [4.7] cm) participated in an on-ice practice session (performing 3 × 40-m linear sprints) and 4 regular-season games while being monitored using a local positioning system. Speed and acceleration were recorded from the sprint and within-game monitoring. Time on ice spent in relative skating speed zones and the frequency of accelerations at different intensities were recorded.Results: Players' greatest peak speeds (29.5 [1.3] vs 28.3 [1.1] km/h) and accelerations (4.39 [0.48] vs 3.34 [0.36] m/s2) reached during gameplay were higher than those reached in linear sprinting (both P < .01). Peak in-game values were moderately predicted by linear sprint values for speed (r = .69, P < .01) but not for acceleration (r < .01, P = .95). Players spent little time at near-peak linear sprint speeds (≥80% [22.7 km/h], ∼3% time on ice; ≥90% [25.5 km/h], <1% of time on ice) during gameplay. However, 26% to 35% of accelerations recorded during the 4 games were ≥90% of linear sprint acceleration.Conclusions: Although skating speed may be advantageous in specific game situations, our results suggest that players spend little time at near-maximal speeds while accelerating frequently during games. This warrants further investigation of direction changes, skating transitions, repeated sprints, and other determinant variables potentially related to on-ice success and the implementation of training strategies to improve repeated acceleration or qualities beyond maximal skating speed.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140174579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0