Claudio Silva, Ricardo Berton, João Boccato, Valmor Tricoli
{"title":"Effects of Training With Different Hang-Power-Clean Intensities on the Maximum Dynamic Strength, Vertical Jump, and Sprint Performance of Female Handball Players.","authors":"Claudio Silva, Ricardo Berton, João Boccato, Valmor Tricoli","doi":"10.1123/ijspp.2023-0325","DOIUrl":"10.1123/ijspp.2023-0325","url":null,"abstract":"<p><strong>Purpose: </strong>To compare the effects of 7 weeks of training with different hang-power-clean (HPC) intensities on the maximum dynamic strength, vertical jump, and sprint performance of female handball players.</p><p><strong>Methods: </strong>Professional handball athletes with at least 1 year of HPC experience volunteered to participate. The athletes were balanced by position and randomly assigned to a group with HPC at 90% (HPC90%) or 50% (HPC50%) of HPC 1-repetition maximum (1RM). The training volume was equalized between groups. Pretraining and posttraining assessments included 1RM HPC, jump height in the squat jump (SJ) and countermovement jump (CMJ), and sprint speeds at 5, 20, and 30 m.</p><p><strong>Results: </strong>From pretraining to posttraining, both groups significantly increased (P ≤ .05) 1RM HPC, although a small effect size was observed in favor of HPC90%. HPC90% and HPC50% did not induce significant changes (P > .05) in the SJ and CMJ height, although for the SJ, a small effect size was observed in favor of HPC90%. Both groups induced a significant improvement (P ≤ .05) in 5-, 20-, and 30-m sprint speeds, although for all speeds, small to moderate effect sizes were observed in favor of HPC90%.</p><p><strong>Conclusions: </strong>Both training groups induced significant improvements in 1RM HPC and sprint speeds, whereas no significant changes were observed in vertical jumps. In addition, based mainly on the effect sizes, the HPC90% group was more effective for increasing 1RM HPC, SJ, and sprint speeds than the HPC50% group.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1467-1472"},"PeriodicalIF":3.5,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390492","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}
{"title":"Longitudinal Analysis of Race-Management Strategies in a World-Class 200-m Freestyle Swimmer: A Case Study.","authors":"Camille Loisel, Robin Pla, Ludovic Seifert","doi":"10.1123/ijspp.2024-0237","DOIUrl":"10.1123/ijspp.2024-0237","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate race-management strategies over a longitudinal case study of one of the world's best female swimmers of the 200-m freestyle to understand if only 1 race-management strategy allowed her to succeed or whether several profiles have been used over the 8 years of analysis.</p><p><strong>Methods: </strong>Different race-management strategies within and between 50-m laps emerged from cluster analysis. To better explain race management, additional characteristics described the level of adversity, the level of competition, the performance outcome, and the type of race.</p><p><strong>Results: </strong>Two strategies of race management between laps have been used, and both allowed her to succeed in her career. The first was characterized by a fast start and a greater decrease of the speed between laps, whereas the second exhibited a more stable speed management. When those strategies were examined in relation to the level of competition and the level of adversity, it appeared that the first strategy was used more in international competitions and associated with higher time intervals between the studied swimmer and the direct rivals, while the second one was used more in national competitions and associated with lower time intervals.</p><p><strong>Conclusions: </strong>Findings suggested that this top elite swimmer did not adhere to a single \"ideal\" race-management strategy. Instead, she demonstrated flexibility and the ability to adapt her race management to contextual factors throughout her career, effectively controlling adversity. This highlights the importance of including adversity analysis in race-management studies.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1512-1517"},"PeriodicalIF":3.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142365207","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}
Wissem Dhahbi, Helmi Chaabene, David B Pyne, Karim Chamari
{"title":"Standardizing the Quantification of External Load Across Different Training Modalities: A Critical Need in Sport-Science Research.","authors":"Wissem Dhahbi, Helmi Chaabene, David B Pyne, Karim Chamari","doi":"10.1123/ijspp.2024-0366","DOIUrl":"10.1123/ijspp.2024-0366","url":null,"abstract":"","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1173-1175"},"PeriodicalIF":3.5,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142346595","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}
Edwin Chun-Yip Chin, Steve Chung-Nam Lai, Sau-Fung Tsang, Sam Ho-Ngai Chung, Yik-Long Wong, Navjot Sran, Kwok-Keung Fung, Fenghua Sun
{"title":"Comparing the Effects of Aqua- and Land-Based Active Cooldown Exercises on Muscle Soreness and Sport Performance: A Randomized Crossover Study.","authors":"Edwin Chun-Yip Chin, Steve Chung-Nam Lai, Sau-Fung Tsang, Sam Ho-Ngai Chung, Yik-Long Wong, Navjot Sran, Kwok-Keung Fung, Fenghua Sun","doi":"10.1123/ijspp.2024-0020","DOIUrl":"10.1123/ijspp.2024-0020","url":null,"abstract":"<p><strong>Objective: </strong>Limited research has directly compared the effectiveness of aqua- and land-based exercises for postexercise recovery. This study aimed to fill this gap by comparing the effects of these 2 types of exercises on postexercise recovery.</p><p><strong>Methods: </strong>Sixteen male college athletes participated in an 8-day experimental study. The initial 2 days were dedicated to determining the intensity levels for the muscle-damaging exercise and recovery jogging. In a crossover design, participants underwent 2 sets of experimental trials. They were randomly assigned to either an aqua or land recovery intervention for days 3 to 5, and after a 1-week washout period they switched to the opposite intervention for days 6 to 8. Muscle soreness, creatine kinase, anaerobic performance, countermovement-jump height, and flexibility were assessed at different time points: baseline, immediately after downhill running, within 1 hour after jogging, and 24 hours and 48 hours after aqua or land jogging.</p><p><strong>Results: </strong>Significant group × time interaction effects were detected in the perceived soreness of the hamstring and quadriceps. However, the post hoc analysis showed no significant difference between aqua and land jogging groups. No significant group × time interaction effect was observed in creatine kinase, anaerobic performance, countermovement-jump height, or flexibility.</p><p><strong>Conclusion: </strong>Aqua and land jogging have similar recovery effects on muscle soreness and performance-based parameters.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1381-1390"},"PeriodicalIF":3.5,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142287243","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}
Alberto Roso-Moliner,Elena Mainer-Pardos,Chris Bishop,Oliver Gonzalo-Skok
{"title":"Assessment of the Relationship Between Physical Performance and Percentage Change-of-Direction Deficit in Highly Trained Female Football Players.","authors":"Alberto Roso-Moliner,Elena Mainer-Pardos,Chris Bishop,Oliver Gonzalo-Skok","doi":"10.1123/ijspp.2024-0198","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0198","url":null,"abstract":"PURPOSEDifferent studies indicate that female players in team sports such as soccer tend to have a lower change-of-direction (COD) deficit (CODD) than their male counterparts and that players who performed better in linear and curved sprints tended to have a worse CODD, suggesting that maximum speed does not equate to a faster COD. This study assessed how performance variables related to speed and jumping influence the variability of %CODD among adult highly trained female soccer players.METHODSFifty-two highly trained female soccer players (age 23.1 [3.25] y; height 163.6 [5.49] cm; weight 59.7 [5.71] kg) participated in this study and performed 180COD, 40-m sprint, countermovement jump, and standing broad jump tests.RESULTSSignificant correlations were found between 180CODL, %CODDR, %CODDL, and between-limbs standing broad jump asymmetry (r = .28-.74). A very large correlation existed between %CODDR and %CODDL (r = .91). Regression analyses indicated a strong inverse relationship between the 10-m sprint time and %CODDR and %CODDL. No predictive models were found for 180COD in either limb. Differences in performance variables such as 180CODR, 180CODL, and asymmetry %CODD were significant between the high- and low-%CODD groups, with moderate to large effect sizes.CONCLUSIONThe present study suggests that specific physical-performance variables, particularly acceleration and unilateral horizontal jumping, are vital to improving COD in highly trained female soccer players, highlighting the need for specific training interventions.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":"4 1","pages":"1-7"},"PeriodicalIF":3.3,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259711","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}
{"title":"University Rankings in Sport Science: A True Reflection of Excellence?","authors":"Ivana Matic Girard,Olivier Girard","doi":"10.1123/ijspp.2024-0109","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0109","url":null,"abstract":"BACKGROUNDUniversity rankings often serve as benchmarks for excellence in academic evaluation. For example, ShanghaiRanking data from 2016 to 2023 for the Global Ranking of Sport Science Schools and Departments reveal consistent dominance by Australia (23.1%), Canada (18.0%), and the United States (12.0%), collectively counting over half of the top 50 universities worldwide. Nevertheless, there is uncertainty about how the methodology behind these rankings shapes a reality as much as it reflects one.PURPOSEOur intention is to discuss the complexity of university rankings, using ShanghaiRanking as an example, to highlight how these rankings reflect academic excellence within the field of sport science. Current Evidence: When ranking universities in sport science, several aspects of academic excellence could be considered in addition to research metrics currently considered in ShanghaiRanking (publication, citation, citations per publication, top 25% journal publications, and internationally collaborated publications). These aspects may include (1) teaching quality, (2) practical training, (3) industry links and employability, (4) support services, (5) facilities and equipment, (6) international network, (7) community engagement, (8) sustainability and ethical practices, and (9) interdisciplinary approach. Altogether, they could provide a more comprehensive view of the quality and effectiveness of a sport-science program.CONCLUSIONSThe ranking of sport-science institutions poses a complex challenge due to diverse factors influencing academic excellence. Engaging in a broader dialogue and refining internationally relevant evaluation methodologies are crucial. These steps enable comparability between countries and provide a holistic understanding of the multidimensional nature of academic excellence in sport science.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":"29 1","pages":"1-5"},"PeriodicalIF":3.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259754","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}
Anh Phong Nguyen,Laurent Bosquet,Laureen Cugnet-Evans,Christine Detrembleur,Philippe Mahaudens
{"title":"Observation of the Achilles Tendon and Gastrocnemius Muscle's Passive Stiffness During an Incremental Running Protocol.","authors":"Anh Phong Nguyen,Laurent Bosquet,Laureen Cugnet-Evans,Christine Detrembleur,Philippe Mahaudens","doi":"10.1123/ijspp.2024-0125","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0125","url":null,"abstract":"OBJECTIVEPassive stiffness, a biomechanical parameter, has a potential influence on running economy, thus playing a pivotal role in performance. This study aimed to quantify passive stiffness of the Achilles tendon and gastrocnemius muscle using myotonometry throughout an incremental running protocol.METHODSTwenty-one male participants underwent a multistage incremental test (Bordeaux test) on a treadmill until exhaustion. Passive stiffness of the gastrocnemius muscle and Achilles tendon was measured using a MyotonPRO device. Measurements were taken before, during, and after the incremental test.RESULTSOur findings indicated that passive stiffness of the medial gastrocnemius decreased at rest between prerun and postrun assessments (-20.12 N·m-1, P = .012). Furthermore, during the test, stiffness increased at low intensity (at 50% of maximal aerobic speed: +104.8 N·m-1, P = .042), returning to baseline values as intensity increased.CONCLUSIONSThroughout an incremental running protocol, both Achilles tendon and gastrocnemius muscle stiffness initially increased and then decreased with escalating percentages of maximal aerobic speed. A deeper understanding of stiffness in running can inform more effective recommendations for runners' strengthening and training.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":"55 1","pages":"1-7"},"PeriodicalIF":3.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259750","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}
{"title":"Inside the Defensive Playbook: Pick-and-Roll Tactical Adjustments Impact the External and Internal Loads During Small-Sided Games in Female Basketball Players.","authors":"Abdelaziz Qarouach,Pierpaolo Sansone,Marco Pernigoni,Rasa Kreivyte,Daniele Conte","doi":"10.1123/ijspp.2024-0218","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0218","url":null,"abstract":"PURPOSEThis study aimed to assess the effect of playing different pick-and-roll (PnR) defensive tactical options during small-sided games (SSGs) on external and internal loads in female basketball players.METHODSTwelve female basketball players (age 28 [2] y; stature 175 [6] cm; body mass 65 [7] kg; playing experience 18 [4] y) belonging to a team competing in the Lithuanian second division were recruited for this study. Across 3 experimental sessions and in a randomized order, players performed 3 SSGs sharing the same features but using 3 defensive strategies on the middle PnR action: Switch, Trap, and Drop. External load was measured using PlayerLoad (PL); the number of accelerations, decelerations, and changes of direction, classified based on their intensities as low (<2.5 m·s-2), medium (2.5-3.5 m·s-2), and high (>3.5 m·s-2); and jumps categorized as low (<40 cm) and high (≥40 cm). Internal load was measured via rating of perceived exertion (RPE).RESULTSHigher PL values in SSGs including Trap defense were found compared with Drop (P < .001, ES = 0.69, moderate) and Switch (P = .001, ES = 0.60, moderate). Additionally, a higher number of accelerations was registered in Trap defense compared with Drop defense (P = .027, ES = 0.99, moderate). Trap defense also led to higher RPE compared with Switch (P = .003, ES = 1.49, large) and Drop (P = .004, ES = 1.42, large) defense.CONCLUSIONSDifferent defensive strategies on the middle PnR can influence the external and internal loads during SSGs, and female basketball coaches should consider the high demand of the Trap defense when designing SSGs.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":"34 1","pages":"1-7"},"PeriodicalIF":3.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259751","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}
{"title":"Optimal Support for Elite Sprinters Using a Minimal, Adequate, and Accurate Approach.","authors":"Jad Adrian Washif,David B Pyne","doi":"10.1123/ijspp.2024-0227","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0227","url":null,"abstract":"BACKGROUNDIn high-performance sport, the support provided by sport scientists and other staff can be a valuable resource for coaches and athletes.PURPOSEWe propose and detail here the approach of \"minimal, adequate, and accurate\" sport-science support to ensure that programs of work and solutions are both economical and effective.METHODSOur support provision advocates for utilization of \"minimal\" resources (employing the least amount of time, tools, and funding) necessary to achieve the desired outcomes. We strive for \"adequate\" information that fulfills specific objectives without excess and with the requirement that methods and data used are \"accurate\" (valid and reliable). To illustrate the principles of this approach, we outline a real-world example of supporting 100-m track (athletics) sprinters preparing and competing in an international competition. The provision of performance support emphasizes an integrated approach, combining knowledge and insights from multiple sport-science disciplines. The key facets managed under this approach are (1) neuromuscular readiness, (2) wellness monitoring, (3) movement observation, (4) motivation, (5) biomechanics and performance analysis, and (6) qualitative feedback. These facets are based on the specific performance determinants and influencing factors of an event (100-m dash).CONCLUSIONSApplication of this quantitative and qualitative approach can enhance the ability to make informed decisions. Nevertheless, the approach must be planned, evaluated, and refined on a regular basis to enable effective decision making in sport-science support. The 3-element approach of \"minimal, adequate, and accurate\" should be codesigned and supported by the athletes, coaches, and staff to ensure successful implementation.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":"29 1","pages":"1-7"},"PeriodicalIF":3.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259758","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}
Stephen West,Ian Shrier,Franco M Impellizzeri,Jo Clubb,Patrick Ward,Garrett Bullock
{"title":"Training-Load Management Ambiguities and Weak Logic: Creating Potential Consequences in Sport Training and Performance.","authors":"Stephen West,Ian Shrier,Franco M Impellizzeri,Jo Clubb,Patrick Ward,Garrett Bullock","doi":"10.1123/ijspp.2024-0158","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0158","url":null,"abstract":"BACKGROUNDThe optimization of athlete training load is not a new concept; however in recent years, the concept of \"load management\" is one of the most widely studied and divisive topics in sports science and medicine.PURPOSEDiscuss the challenges faced by sports when utilizing training load monitoring and management, with a specific focus on the use of data to inform load management guidelines and policies/mandates, their consequences, and how we move this field forward.CHALLENGESWhile guidelines can theoretically help protect athletes, overzealous and overcautious guidelines may restrict an athlete's preparedness, negatively influence performance, and increase injury risk. Poor methods, wrong interpretation of study findings, and faulty logic do not allow for systematic scientific evaluations to inform guidelines. Practical Solutions: Guidelines and mandates should be developed through a systematic research process with stronger research designs and clear research questions. Collaborating with statistical and epidemiological experts is essential. Implementing open science principles and sharing all sports training load data increase transparency and allow for more rapid and valid advancements in knowledge. Practitioners should incorporate multiple data streams and consider individual athlete responses, rather than applying broad guidelines based on average data.CONCLUSIONMany current training load guidelines and mandates in sports come from good intentions; however, they are arbitrary without sound knowledge of the underlying scientific principles or methods. Common sense guidelines are helpful when there is sparse literature, but they should be careful to avoid arbitrarily choosing findings from weak research. Without precise scientific inquiries, implementing training load interventions or guidelines can have negative implications.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":"42 1","pages":"1-4"},"PeriodicalIF":3.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142177326","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}