International journal of sports physiology and performance最新文献_第4页

PhD Programs in Sport Science: Impact Beyond Academia and Scientific Publishing. 体育科学博士课程：超越学术和科学出版的影响。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-06-03 DOI: 10.1123/ijspp.2025-0185

Iñigo Mujika, Chris R Abbiss

引用次数: 0

Decline in Efficiency and Changes in Technique Following a Simulated Cross-Country Skiing Race. 模拟越野滑雪比赛后的效率下降和技术变化。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-06-03 DOI: 10.1123/ijspp.2024-0546

Heleen Docter, Pim Scheiberlich, Jørgen Danielsen, Øyvind Sandbakk, Jos J de Koning, Dionne A Noordhof

{"title":"Decline in Efficiency and Changes in Technique Following a Simulated Cross-Country Skiing Race.","authors":"Heleen Docter, Pim Scheiberlich, Jørgen Danielsen, Øyvind Sandbakk, Jos J de Koning, Dionne A Noordhof","doi":"10.1123/ijspp.2024-0546","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0546","url":null,"abstract":"Purpose: To compare gross efficiency (GE) before versus after a simulated cross-country skate-skiing race and investigate the association between changes in GE and in kinematic variables.Methods: GE and kinematic variables were measured during submaximal roller ski skating at a standardized speed-incline combination directly before and after a simulated race (∼39 min). GE was calculated from power output and respiratory data, while kinematic variables were obtained using 3D kinematics. The roller-ski-skating race simulation consisted of 3 virtual laps, with each lap (virtual distance: 3.4 km) including flat (2%), uphill (5%, 7%, and 12%), and simulated downhill sections. The race concluded with a final section of 1000 m on a 7% incline.Results: GE declined by 0.6% points throughout the race (before: 15.6% [1.0%]; after: 15.0% [1.0%]; P < .001). The drop in GE coincided with an increase in cycle rate, larger ski edging and orientation angles, and a decline in push-off velocity and ski and pole ground-contact times (P < .05). None of the changes in kinematic variables were associated with the change in GE (P > .05).Conclusions: GE in skating cross-country skiing deteriorates following a simulated roller-ski-skating race on undulating terrain. Although kinematic variables changed, no significant association with the change in GE was found.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-8"},"PeriodicalIF":3.5,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144225426","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

How Different Velocity-Loss Thresholds Impact Acute Neuromuscular Fatigue in Flywheel Resistance Training. 飞轮阻力训练中不同速度损失阈值对急性神经肌肉疲劳的影响。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-30 Print Date: 2025-07-01 DOI: 10.1123/ijspp.2024-0504

Alejandro Muñoz-López, Diego Mármol, Raul Domínguez, Borja Sañudo, F Javier Núñez

{"title":"How Different Velocity-Loss Thresholds Impact Acute Neuromuscular Fatigue in Flywheel Resistance Training.","authors":"Alejandro Muñoz-López, Diego Mármol, Raul Domínguez, Borja Sañudo, F Javier Núñez","doi":"10.1123/ijspp.2024-0504","DOIUrl":"10.1123/ijspp.2024-0504","url":null,"abstract":"Flywheel resistance-training technology has been shown to be effective in improving sport performance and reducing the risk of injuries. This study aimed to evaluate the effects of different velocity-loss thresholds and moments of inertia on immediate postexercise neuromuscular fatigue during the flywheel half-squat exercise. The study followed a crossover design. Twenty physically healthy participants (15 men and 6 women) participated in the study. They completed 9 workout conditions combining 3 training intensities (inertia: 0.050, 0.100, and 0.150 kg·m2) and 3 velocity-loss thresholds (5%, 10%, and 15%) during the flywheel half-squat exercise. Conditions were administered in random order. Neuromuscular performance tests, including peak isometric force and maximum rate of force development measured by the isometric squat test, as well as the countermovement jump, were performed before and immediately after each exercise condition. In addition, a countermovement jump was performed 5 minutes postexercise. Peak isometric force significantly dropped by about 15.58% (16.70%) (P < .001, ηp2=.672). However, maximum rate of force development was similarly affected by time but also by the velocity-loss threshold (5% ≈ 10% < 15%, P = .011, ηp2=.117). Countermovement-jump performance varied significantly with time, inertia, and velocity loss (P = .015, ηp2=.062), showing a greater impact with higher speed loss (15%) compared with lower (5% and 10%). Speed losses above 10%, especially up to 0.150 kg·m2, caused significant loss of neuromuscular performance, particularly in actions requiring high-velocity force. Coaches and practitioners can use velocity-based training to individualize the training volume and adjust a desired postexercise acute fatigue.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"993-1001"},"PeriodicalIF":3.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144186977","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

Effects of 5-Week Brain Endurance Training on Fatigue and Performance in Elite Youth Epée Fencers. 5周脑耐力训练对优秀青年epsame击剑运动员疲劳和表现的影响。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-27 Print Date: 2025-07-01 DOI: 10.1123/ijspp.2024-0396

Giorgio Varesco, Walter Staiano, Maëlle Bracco, Benjamin Pageaux, Lena Soulas, Maël Goisbault, Julie Doron, Marc Jubeau

{"title":"Effects of 5-Week Brain Endurance Training on Fatigue and Performance in Elite Youth Epée Fencers.","authors":"Giorgio Varesco, Walter Staiano, Maëlle Bracco, Benjamin Pageaux, Lena Soulas, Maël Goisbault, Julie Doron, Marc Jubeau","doi":"10.1123/ijspp.2024-0396","DOIUrl":"10.1123/ijspp.2024-0396","url":null,"abstract":"Purpose: To examine the effectiveness of 5 weeks of brain endurance training (BET) in reducing impairments in sustained attention, performance at a specific fencing test, and perceived fatigue after a cognitive fatiguing task in youth épée elite fencers during the preseason.Methods: Using a quasi-randomized controlled trial, 19 elite youth fencers (8 women, 18 [1] y) were divided into a BET (n = 11) or control (n = 8) group. Both groups trained for 5 sessions/wk during 5 weeks. The BET group completed the BET sessions before, during, or after fencing training, 3 or 4 times a week. The control group performed only fencing training. Before and after the 5 weeks, fencers performed a psychomotor vigilance test and fencing test before and after 40 minutes of a reverse Stroop task. Perceived fatigue was scored on a 10-cm visual analog scale.Results: After 5 weeks, perceived fatigue, reaction time, and number of lapses in the psychomotor vigilance test increased from before to after the reverse Stroop task only in the control group (P ≤ .011), with no pre-to-post difference for the BET group (P > .059). No differences were found in fencing-test performance (P > .07). Effort for the reverse Stroop task increased for both groups after the 5 weeks (P = .043). We observed an increase in perceived fatigue, reaction time, and number of lapses in the BET group before the fatiguing task (P ≤ .028).Conclusion: BET reduced the negative effects of a cognitive fatiguing task on sustained attention, without a clear improvement in performance on the fencing test, and represents a possible tool to mitigate fatigue in fencing.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"979-985"},"PeriodicalIF":3.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144127619","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

Impact of Stabilization Exercises on Athletic Performance and Injury Risk in College Volleyball Players. 稳定训练对高校排球运动员运动成绩及损伤风险的影响。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-13 Print Date: 2025-07-01 DOI: 10.1123/ijspp.2024-0348

Raziye Erkan, Emine Aslan Telci

{"title":"Impact of Stabilization Exercises on Athletic Performance and Injury Risk in College Volleyball Players.","authors":"Raziye Erkan, Emine Aslan Telci","doi":"10.1123/ijspp.2024-0348","DOIUrl":"10.1123/ijspp.2024-0348","url":null,"abstract":"Purpose: This study aimed to determine the effects of stabilization exercises on athletic performance and injury risk in volleyball players.Methods: A randomized clinical trial was conducted at university sport facilities with 23 college volleyball players age 18 to 25 years. Using a stratified randomization method, participants were randomly assigned to the control group (n = 11), which continued their routine training program, or the intervention group (n = 12), which performed additional volleyball-specific stabilization exercises twice per week for 8 weeks. The main outcomes, including injury risk, and athletic performance were assessed using functional movement screening, sit-reach flexibility test, weight-bearing lunge, medicine-ball throw, closed-kinetic-chain upper-extremity stability test, 20-m speed test, serve skill test, vertical jump test, and upper- and lower-extremity dynamic Y-balance test.Results: Both groups showed significant improvements in all parameters after the 8-week program, except for the control group's sit-reach test and asymmetry points (P < .05). When comparing the 2 groups, the intervention group showed significantly greater improvements in functional movement screening score, asymmetry points, medicine-ball throw, closed-kinetic-chain upper-extremity stability test, vertical jump, serve skill, Y-balance test scores for upper and lower extremities, lower-extremity anterior asymmetry score, and right-foot weight-bearing lunge results (P < .05).Conclusions: Stabilization exercises effectively reduce injury risk and enhance athletic performance in volleyball players. Incorporating these exercises into training programs can be a valuable strategy for preventing injuries and improving individual and team success in volleyball.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"948-957"},"PeriodicalIF":3.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010119","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

Effects of Complex Training on Sprint Acceleration and Neuromuscular Performance in Young Male Sprinters: A Comparison Between Incline and Level Speed Bounding. 复杂训练对年轻男子短跑运动员短跑加速和神经肌肉性能的影响：倾斜和水平速度跳跃的比较。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-13 Print Date: 2025-07-01 DOI: 10.1123/ijspp.2024-0243

Chanawat Sanpasitt, Chaninchai Intiraporn, Tossaporn Yimlamai

{"title":"Effects of Complex Training on Sprint Acceleration and Neuromuscular Performance in Young Male Sprinters: A Comparison Between Incline and Level Speed Bounding.","authors":"Chanawat Sanpasitt, Chaninchai Intiraporn, Tossaporn Yimlamai","doi":"10.1123/ijspp.2024-0243","DOIUrl":"10.1123/ijspp.2024-0243","url":null,"abstract":"Purpose: This study aimed to compare the effectiveness of complex training (CT) with inclined versus horizontal speed bounding on sprint acceleration ability and neuromuscular performance in youth male sprinters.Methods: Thirty male sprinters 14 to 16 years of age were randomly allocated to 1 of 3 groups (n = 10/group): CT with incline speed bounding, CT with horizontal speed bounding, or control (CON). Both intervention groups completed 3 repetitions of back-squat exercise (85% 1-repetition maximum), followed by speed bounding on either a 9° or 0° platform, twice weekly for 6 weeks in addition to their usual training, whereas the CON group received no intervention. The 50-m sprint test, leg muscular power, isokinetic strength of knee extensors and flexors, and the Hoffman reflex and volitional wave in soleus and gastrocnemius muscles were measured before and after the intervention.Results: Following 6 weeks of training, both the CT with incline speed bounding and the CT with horizontal speed bounding groups displayed similar improvements (P < .05) in 10- and 20-m sprint times compared with prior training and the CON group, of which the CT with incline speed bounding group showed a greater (P < .05) 10-m sprint velocity. These changes were concomitant with significant increases in peak force (P < .05) but not volitional wave amplitude and V:Mmax ratio in both muscles. However, the CON group did not show these improvements.Conclusion: These findings indicate that incorporation of inclined speed bounding into CT over 6 weeks is more effective in improving sprint acceleration performance compared with horizontal CT, irrespective with Hoffman reflex modulations.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"925-933"},"PeriodicalIF":3.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144000960","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

Mixing the Sheep and the Goats: Reframing the Interpretation of Acceleration Data in Sport. 混合绵羊和山羊：重新定义运动加速度数据的解释。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-13 DOI: 10.1123/ijspp.2024-0521

Pedro Oliveira, Ivan Baptista, Felipe A Moura, Daniel Boullosa, Fábio Y Nakamura, José Afonso

{"title":"Mixing the Sheep and the Goats: Reframing the Interpretation of Acceleration Data in Sport.","authors":"Pedro Oliveira, Ivan Baptista, Felipe A Moura, Daniel Boullosa, Fábio Y Nakamura, José Afonso","doi":"10.1123/ijspp.2024-0521","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0521","url":null,"abstract":"Purpose: Acceleration is a continuous variable, and current practices of categorizing it into nonconsensual arbitrary thresholds may potentially lead to imprecise and biased data interpretation, as well as limiting interstudy comparisons. This commentary proposes a reframing of the interpretation of acceleration data and their use for athlete monitoring and exercise prescription. Although this applies to multiple sports, we will focus on the example of team sports in which these metrics are commonly used.Conclusion: Despite the recognized benefits of acceleration monitoring, 2 major limitations are evident. First, the common practice of classifying continuous acceleration data into discrete categories leads to a loss of relevant information, thus reducing the validity, reliability, and statistical power of analyses. Second, the use of arbitrary thresholds fails to account for individualized profiles, which are essential for monitoring. The limitations of these approaches are exacerbated by the lack of any objective justification for the thresholds used. We propose that acceleration be analyzed continuously, and, therefore, interpretation of data should be individualized. Accelerations should be analyzed as continuous variables rather than categorized into arbitrary thresholds. Individualized monitoring using players' maximum acceleration as a reference can provide a more accurate representation of players' physical demands.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-4"},"PeriodicalIF":3.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144003905","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

The Effects of Active Versus Passive Interset Rest Intervals in the Bench-Press Exercise in Resistance-Trained Men: A Randomized Crossover Study. 抗阻训练男性卧推运动中主动与被动间歇休息时间的影响：一项随机交叉研究。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-13 Print Date: 2025-07-01 DOI: 10.1123/ijspp.2024-0498

Luis A Berlanga, José López-Chicharro, Ismael Martínez-Guardado, Julio A Ceniza-Villacastín, Michelle Matos-Duarte

{"title":"The Effects of Active Versus Passive Interset Rest Intervals in the Bench-Press Exercise in Resistance-Trained Men: A Randomized Crossover Study.","authors":"Luis A Berlanga, José López-Chicharro, Ismael Martínez-Guardado, Julio A Ceniza-Villacastín, Michelle Matos-Duarte","doi":"10.1123/ijspp.2024-0498","DOIUrl":"10.1123/ijspp.2024-0498","url":null,"abstract":"Purpose: Interset rest (ISR) is a variable of resistance training (RT) that has received limited attention and focused mainly on the length of the ISR rather than examining the effects of different stimuli when using the same ISR duration. The aim of this study was to compare the effects of 2-minute passive (PAS) or active ISR (ACT) on intraset velocity loss, blood lactate concentrations, and rating of perceived exertion during bench press in resistance-trained men.Methods: Fourteen participants (23.64 [2.02] y, 82.79 [10.74] kg, 181.50 [7.02] m, maximal power in bench press 660 [113] W) completed 2 RT sessions of 5 × 8 repetitions at maximal velocity using individual optimal load for maximal power output with 2-minute PAS or ACT ISR. During the ACT, participants completed repetitions of vertical chest press at 5% to 10% 1-repetition maximum at a controlled velocity. The intraset velocity loss was measured using a lineal encoder, and blood lactate concentrations and rating of perceived exertion before and after each set were registered.Results: Intraset velocity loss was lower in ACT compared with the PAS protocol, without statistically significant differences (P = .571). Blood lactate concentrations increased across the session for both ISR protocols, but this increase was diminished in ACT compared with PAS, without statistical meaning (P > .05).Conclusions: Continuing to perform the same activation during rest intervals was well-tolerated and may reduce the loss of performance due to accumulated workload throughout an RT session, suggesting that ACT may trigger a metabolic advantage in exercise performance for consecutive sets during an RT bout.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"934-940"},"PeriodicalIF":3.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144017099","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

Head, Face, and Neck Cooling for Performance: A Systematic Review and Meta-Analysis. 头部、面部和颈部冷却对表现的影响：系统回顾和荟萃分析。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-12 Print Date: 2025-06-01 DOI: 10.1123/ijspp.2024-0561

Christopher J Stevens, David Borg, Carly Brade, Sarah Carter, Davide Filingeri, Jason Lee, Louisa Lim, Toby Mündel, Lee Taylor, Christopher J Tyler

{"title":"Head, Face, and Neck Cooling for Performance: A Systematic Review and Meta-Analysis.","authors":"Christopher J Stevens, David Borg, Carly Brade, Sarah Carter, Davide Filingeri, Jason Lee, Louisa Lim, Toby Mündel, Lee Taylor, Christopher J Tyler","doi":"10.1123/ijspp.2024-0561","DOIUrl":"10.1123/ijspp.2024-0561","url":null,"abstract":"Purpose: Cooling the head, face, and neck can have strong perceptual effects that contribute to improved performance. This systematic review aimed to determine the effect of cooling strategies targeting the head, face, and neck on physical and cognitive performance, determine any associated physiological and perceptual responses, synthesize adverse events, and provide practical applications.Methods: We conducted a systematic review and multilevel meta-analysis, adhering to PRISMA guidelines. Studies that investigated the effect of cooling strategies targeting the head, face, or neck on a physical or cognitive task using a controlled trial design were included.Results: Sixty-three studies were identified, involving 618 participants (86.6% male). Cooling strategies included water-perfused devices (18.7%), phase-change neck collars (17.3%), fanning/cold air (14.7%), phase-change headwear (13.3%), ice/gel packs (13.3%), cold towels (5.3%), menthol application (4.0%), water spraying/dousing (4.0%), or a combination of strategies (9.3%). The effect of cooling on both self-paced and fixed-intensity exercise tasks was inconclusive; the 95% CI of the pooled effect was compatible with no effect and medium beneficial effects but not harmful effects. We were unable to pool cognitive data. Cooling reduced the skin temperature at the target site and improved thermal sensation and comfort. Effects on heart rate and core and mean skin temperatures were negligible. Adverse events were rare, and no intervention subgroup was superior.Conclusion: We recommend that athletes experiment with a range of head-, face-, and neck-cooling strategies, including using different doses and timings, to determine the optimal strategy for their individual and sport context.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"743-763"},"PeriodicalIF":3.5,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144008494","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

Positive and Negative Verbal Instructions Associated With Sham Ischemic Preconditioning Moderate Improvements of Knee-Extension Resistance Exercise in Trained Men. 积极和消极言语指示与假性缺血预处理相关的训练男性膝关节伸展阻力运动的中度改善。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-05-09 Print Date: 2025-07-01 DOI: 10.1123/ijspp.2024-0217

Hiago L R Souza, Philip Hurst, Géssyca T Oliveira, Anderson Meireles, Rhaí A Arriel, Rodrigo Hohl, Marco A C Garcia, Moacir Marocolo

{"title":"Positive and Negative Verbal Instructions Associated With Sham Ischemic Preconditioning Moderate Improvements of Knee-Extension Resistance Exercise in Trained Men.","authors":"Hiago L R Souza, Philip Hurst, Géssyca T Oliveira, Anderson Meireles, Rhaí A Arriel, Rodrigo Hohl, Marco A C Garcia, Moacir Marocolo","doi":"10.1123/ijspp.2024-0217","DOIUrl":"10.1123/ijspp.2024-0217","url":null,"abstract":"Purpose: To verify the effects of positive and negative verbal instructions regarding sham ischemic preconditioning (sham-IPC) on leg-extension resistance-exercise performance.Methods: Thirty-five trained men were randomized to 1 of 3 groups: positive expectation, negative expectation, or control. Participants completed leg-extension strength tests in 4 trials (2 familiarization, 1 baseline, and 1 experimental). Experimental trials consisted of participants' receiving sham-IPC (3 × 5 cycles at only 20 mmHg). In positive- and negative-expectation groups, participants received verbal instructions that would improve or worsen performance, respectively. Controls did not receive any verbal suggestion. Outcomes were maximum number of repetitions, maximal isometric voluntary contraction, and muscle power output.Results: Expectations about sham-IPC were significantly higher in the positive-expectation than in the negative-expectation and control groups. Participants in the positive group reported a significantly greater number of repetitions than both the negative-expectation (d = 1.11) and control groups (d = 0.77). No differences between groups were shown for maximal isometric voluntary contraction (d range = 0.05-0.67) and power output (d range = -0.08 to 1.02).Conclusions: Our results highlight the importance of measuring expectations prior to sham-IPC, which may significantly influence the results of randomized controlled trials.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"891-898"},"PeriodicalIF":3.5,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143995457","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