Journal of Sports Medicine and Physical Fitness最新文献

{"title":"Gender differences in three-dimensional pelvic behavior during maximal sprint running.","authors":"Kazuki Ota, Takuya Yoshida, Hirohiko Maemura, Satoru Tanigawa","doi":"10.23736/S0022-4707.25.16415-3","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16415-3","url":null,"abstract":"<p><strong>Background: </strong>Previous studies on joint kinetics in female during maximal sprinting have been limited to lower-limb kinetics; however, we hypothesized that female's sprinters have greater lumbosacral free leg side lateral flexion torque and lower lumbosacral free leg side torsional torque than male's sprinters. The present study aimed to examine the stiffness parameters, three-dimensional pelvic behavior, and kinetics in female's sprinters compared with male's sprinters.</p><p><strong>Methods: </strong>The three-dimensional (3D) kinematics and force data during regular 60-m sprints starting from a crouching start position in eight female's and male's sprinters were captured using a motion capture system and force platform. Stiffness parameters, three-dimensional pelvic behavior, and kinetics were calculated.</p><p><strong>Results: </strong>Female's sprinters had significantly lower vertical stiffness compared to male's sprinters. Additionally, female's sprinters had significantly the greater lateral flexion of the pelvis toward the free leg side angle and integrated contributory component of the free leg side lateral flexion angular impulse during the stance phase compared to male's sprinters. Furthermore, female's sprinters had significantly lower step frequency and an integrated contributory component of the free leg side rotation angular impulse during the stance phase and in total compared to male's sprinters.</p><p><strong>Conclusions: </strong>The lateral flexion of the pelvis toward the free leg side observed in female's sprinters during stance leg toe-off may contribute to the upward movement center of mass. The lower lumbosacral torsional torque towards the free leg side in female's sprinters may lead to delayed leg recovery motion after stance leg toe-off, resulting in a lower step frequency.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acute effects of electrical muscle stimulation on energy metabolism during weight-bearing exercise in young-female: a crossover randomized controlled trial.","authors":"Juseong Lee, Seung W Shin, Junghoon Kim","doi":"10.23736/S0022-4707.25.16158-6","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16158-6","url":null,"abstract":"<p><strong>Background: </strong>Electrical muscle stimulation is an effective tool that provides additional benefits to energy metabolism, such as energy expenditure. However, it remains unclear which energy system influences the increase in energy expenditure during electrical muscle stimulation. The aim of this study was to determine the contribution of three energy systems (aerobic, anaerobic lactic, and anaerobic alactic) during a single session of weight-bearing exercise with EMS using a crossover randomized controlled trial.</p><p><strong>Methods: </strong>Ten young females (mean age: 23.0±3.6 years) were randomly assigned to perform two types of exercises in a random order (WB: weight-bearing exercises without electrical muscle stimulation, N.=10; WB+EMS: weight-bearing exercises with electrical muscle stimulation, N.=10). During both sessions, we evaluated the oxygen consumption (absolute and relative), blood lactate concentration (before and after exercise), and heart rate. We then calculated the energy expenditure and percentage for the three energy systems.</p><p><strong>Results: </strong>WB+EMS showed significantly higher oxygen consumption (P=0.016, effect size; d=0.94) than WB. The total energy expenditure was 25.7% higher in WB+EMS than in WB (84.4±17.1 vs. 67.1±15.4 kcal, P=0.045, d=0.74). In addition, the energy expenditure of the anaerobic lactic system was significantly higher in the WB+EMS (P=0.009, d=1.06).</p><p><strong>Conclusions: </strong>These findings suggest that electrical muscle stimulation can contribute to an increased energy metabolism, particularly in the anaerobic energy system, even when performing the same type and duration of exercise.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of thruster maximum load using clean and jerk one-repetition maximum: influence of gender and experience in CrossFit athletes.","authors":"Alejandro Oliver-López, Tom Brandt, Annette Schmidt, Rafael Sabido","doi":"10.23736/S0022-4707.25.16660-7","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16660-7","url":null,"abstract":"<p><strong>Background: </strong>Strength coaches use the repetition maximum (1RM) of key movements to predict the load for derivate exercises in sports like weightlifting or CrossFit (CF). Although this is a fundamental CF exercise, no prediction equations have been established for the thruster (TH). Therefore, this study aimed to determine the relationship between the clean and jerk (CJ) and TH 1RM in CF athletes and analyze the influence of gender and experience.</p><p><strong>Methods: </strong>Seventy-three participants (40 men; 33 women; age: 30.1±8.2 years) with ≥3 months of CF experience were enrolled in this study. The CJ and TH 1RM were tested in 2 separate sessions. Additionally, anthropometric data and CF experience were taken. Linear correlation and regression analyses were applied to investigate the relationship between both exercises. For further analyses, participants were subdivided by gender and CF-experience (men and women experienced [EM; EW]): ≥24 months CF-training, and (men and women beginners [BM; BW]): <24 months CF-training.</p><p><strong>Results: </strong>Very high significant (P<0.001) correlations were found between CJ and TH (r=0.98) across all participants and for EM (r=0.98), BM (r=0.96), EW (r=0.95), and BW (r=0.90). Similarly, the coefficient of determination was high to very high for all participants (R²=0.97) and for all the groups; EM (R²=0.97), BM (R²=0.91), EW (R²=0.91), and BW (R²=0.82). Prediction equations were calculated for EM (CJ=0.81*TH+9.98), BM (CJ=0.80*TH+10.23), EW (CJ=0.63*TH+17.39), and BW (CJ=0.96*TH+-2.21).</p><p><strong>Conclusions: </strong>This is the first study on CF athletes that guides prescribing individualized loads in the TH which is essential to induce appropriate training stimuli to achieve the desired adaptions.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison between balance performance among female basketball players and non-basketball players in Saudi Arabia: a cross-sectional study.","authors":"Alaa M Albishi","doi":"10.23736/S0022-4707.25.16781-9","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16781-9","url":null,"abstract":"<p><strong>Background: </strong>Research findings indicate a concerning prevalence of physical inactivity among Saudi females, which has been associated with poor balance performance. Therefore, it is crucial to promote sports participation, such as basketball. Despite its potential benefits, the specific effects of basketball engagement among Saudi females still need to be explored. Thus, this study investigated the association between basketball participation and balance performance among Saudi women.</p><p><strong>Methods: </strong>We examined the relationship between playing basketball and balance performance using the Star Excursion Balance Test (SEBT). Thirty-eight female Saudi participants were recruited and divided into two groups: a non-athletic control group (N.=20, age: 21.8±3.1 years; weight: 60.6±12 kg; height: 163.8±6.3 cm) and a basketball group (N.=18, age: 21.5±1.7 years; weight: 55.6±7.7 kg; height: 157.7±5.5 cm).</p><p><strong>Results: </strong>The study found that basketball players demonstrated significantly superior balance performance to non-basketball players in posteromedial (P=0.01; d=0.85) and posterior directions of the right leg (P=0.04; d=0.68). Also, a significant group difference was found in the posterior reach of the left leg (P=0.02; d=0.76). Reaching distance in a given direction was highly correlated with total reaching distance for both leg sides. Moreover, a significant positive correlation between years of playing and balance variables was found in the basketball group (P<0.05).</p><p><strong>Conclusions: </strong>We conclude that individuals who regularly played basketball exhibited superior balance performance compared to non-athletic individuals in specific reaching directions. Therefore, promoting women's participation in basketball is recommended to enhance individuals' overall physical activity and balance capabilities.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of an exercise-based rehabilitation program in patients with minor ischemic non-disabling stroke or transient ischemic attack.","authors":"Erica Brugin, Stefano Palermi, Valentina Pescatore, Silvia Compagno, Carlo Zanella, Marco Vecchiato, Ruggero Marin, Renata Volpato, Marzia Sarto, Maela Masato, Andrea Demeco, Aurora Panico, Alessandro Biffi, Franco Giada","doi":"10.23736/S0022-4707.25.16408-6","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16408-6","url":null,"abstract":"<p><strong>Background: </strong>Ischemic stroke and transient ischemic attack (TIA) present global health challenges. While physical activity is strongly recommended for secondary prevention of these clinical conditions, there's a massive gap between guidelines and the real world. This study aimed to assess the effectiveness, safety, and feasibility of an exercise-based rehabilitation (EBR) program for patients with minor ischemic non-disabling stroke (MINDS) or TIA.</p><p><strong>Methods: </strong>Consecutive patients from the Neurology Unit of Mirano - Venice, Italy, diagnosed with MINDS or TIA, underwent a structured EBR program. The program comprised 6 weeks of supervised training in a hospital gym and 12 months of territorial gym training. Safety, feasibility, and effectiveness were evaluated through adverse events, drop-out rates, and improvements in body composition, muscular strength, and cardiopulmonary fitness.</p><p><strong>Results: </strong>The sample comprised 32 patients (mean age 66 years, 81,3% male). No adverse events were reported. During the in-hospital phase of the program, there were no dropouts, while 28% of patients ceased training during the territorial phase. After the in-hospital phase, there were significant improvements in body composition, muscular strength, and cardiopulmonary parameters. These benefits persisted at the 12-month territorial gym phase of the EBR program only for patients who continued training.</p><p><strong>Conclusions: </strong>The structured EBR program demonstrated safety, feasibility, and effectiveness in improving health parameters for MINDS or TIA patients. Such interventions promise to enhance secondary prevention and overall health outcomes in this patient group.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Italian guidelines for competitive sport eligibility (COCIS): what are the new indications in the updated 2023 version for the evaluation of athletes with arrhythmias?","authors":"Luigi Sciarra, Antonio Scarà, Alessandro Biffi, Silvia Castelletti, Domenico Corrado, Antonio Dello Russo, Franco Giada, Giuseppe Inama, Loira Leoni, Viviana Maestrini, Zefferino Palamà, Peter Schwartz, Andrea Spampinato, Paolo Zeppilli, Alessandro Zorzi, Pietro Delise","doi":"10.23736/S0022-4707.25.16910-7","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16910-7","url":null,"abstract":"<p><p>The COCIS 2023 guidelines represent the latest update on competitive sports eligibility for athletes with heart disease, developed by the Italian Society of Sports Cardiology and associated medical societies. These updated guidelines reflect advancements in cardiology and sports medicine and introduce clear class of recommendations and levels of evidence for assessing athletes with heart disease. This document focuses on the differences between the 2023 and 2017 versions, particularly regarding athletes with arrhythmias. The guidelines integrate new scientific evidence, including modifications to criteria for specific arrhythmic conditions like Wolf-Parkinson-White (WPW) Syndrome, Brugada Syndrome, long QT syndrome (LQTS), and premature ventricular beats (PVBs). Updates on the return-to-play timing after successful catheter ablation are also included. Key updates include the revised arrhythmic risk thresholds for WPW syndrome; these guidelines also expand recommendations for asymptomatic pre-excitation cases. In Brugada Syndrome, eligibility remains dependent on the presence of malignant arrhythmias and genetic risk factors, with scoring systems to aid risk stratification. For LQTS, eligibility is reconsidered for asymptomatic individuals with a negative phenotype and a positive genotype, with beta-blocker use. Additionally, the management of PVBs is refined, with new criteria for further investigation and risk assessment. COCIS 2023 introduces a more nuanced, evidence-based approach to the eligibility of athletes with arrhythmias. The guidelines provide clinicians with detailed recommendations for managing a variety of arrhythmic conditions. As scientific research advances, these guidelines will continue to evolve, ensuring safe athletic participation for individuals with cardiovascular conditions.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anti-doping rules violations in modern Olympic games.","authors":"Ramananda Ningthoujam","doi":"10.23736/S0022-4707.25.16691-7","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16691-7","url":null,"abstract":"<p><strong>Background: </strong>Doping persists as a significant challenge in Olympic sports despite stringent anti-doping measures. This study investigates doping prevalence, including total cases, commonly affected sports, frequently used substances, and most implicated countries, in the Summer and Winter Olympics from 1968 to 2022. This study aims to analyze doping trends across the Olympic Games from 1968 to 2022, identify patterns in doping violations, and assess the impact of anti-doping policies and detection advancements on reducing doping prevalence. A retrospective analysis of anti-doping rules violations (ADRVs) was conducted using publicly available data from the International Olympic Committee and the International Testing Agency.</p><p><strong>Methods: </strong>Data from the Summer and Winter Olympics, including the number of doping tests conducted, ADRVs recorded, and re-analysis outcomes, were examined. A focus was placed on key doping incidents from 2004 to 2012, the sports most affected, and the countries involved. The study also reviewed literature on the impact of anti-doping technologies, such as the athlete biological passport. Descriptive statistics were used to quantify doping trends, highlighting the number of tests, ADRVs, and revoked medals over time. Comparative analyses assessed the differences in doping prevalence across sports, countries, and time periods.</p><p><strong>Results: </strong>From 1968 to 2020, the number of tests conducted at the Summer Olympics increased from 667 to 5,033, with 250 confirmed doping cases and 143 medals revoked due to ADRVs. In the Winter Olympics, testing increased from 86 tests in 1968 to 3,166 in 2022, with 52 confirmed doping cases and 14 medals revoked. Weightlifting and athletics were the most affected in the Summer Games, while cross-country skiing led in the Winter Games. Russia was the most implicated country, particularly during the 2014 Sochi Winter Olympics. The introduction of retrospective testing identified a significant portion of violations, with 73 out of 82 cases in 2012 London discovered post-games.</p><p><strong>Conclusions: </strong>Doping trends reveal the ongoing challenge of maintaining clean competition despite increased testing and policy enforcement. Retrospective testing has been critical in uncovering violations, underscoring the limitations of real-time detection. Continued investment in advanced detection methods, international collaboration, and enhanced education are essential to mitigating doping and preserving the integrity of the Olympic Games.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring submission finishes in the Ultimate Fighting Championship™: a comprehensive analysis.","authors":"Mohamad Y Fares, Jack Mao, Ryan Stadler, Peter Boufadel, Mohammad Daher, Matthew Rosenthal, Jad Lawand, Adam Z Khan, Joseph A Abboud","doi":"10.23736/S0022-4707.25.16585-7","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16585-7","url":null,"abstract":"<p><strong>Background: </strong>Submission techniques are a major part of mixed martial arts (MMA) and can result in a wide range of injuries to different parts of the body. Knowledge of the patterns of these submissions is lacking in literature. The aim of this study was to provide a comprehensive analysis of the submissions performed during MMA bouts in the Ultimate Fighting Championship (UFC).</p><p><strong>Methods: </strong>All UFC pay-per-view (PPV) events from UFC 1-294 were screened via the official UFC website. Results of match scorecards, event characteristics, year, number of submission finishes, number of male and female fights per event, UFC fighter characteristics, gender, weight division, anatomical location of submission, type and round of submission, were recorded. Submission rates were assessed between different subgroups. An independent t-test, ANOVA test and Joinpoint regression analysis were used to explore relationships between different variables, with P value less than 0.05 deemed significant.</p><p><strong>Results: </strong>A total of 293 PPV events were included from 1993 to 2023, comprising a total of 3123 professional fights, 272 of which occurred prior to the implementation of the unified rules of MMA. Overall, 618 fights ended in submission, comprising an overall submission rate of 19.8%. No significant difference was found between submission rates of male and female fighters(P=0.853). Submission rates were found to significantly decrease across the years from the first PPV(P<0.001). The head was the most commonly targeted anatomical location of all submissions (74.3%, P<0.001). Choking submissions were significantly more common than non-choking submissions (65.5% vs. 34.5%, P<0.001), with the rear naked choke being the most utilized submission maneuver (32.7%). Among male fighters, a higher number of submission finishes occurred in intermediate weight divisions compared to lighter and heavier weight divisions.</p><p><strong>Conclusions: </strong>The submission rate in the UFC is around 20%. While submission rates are decreasing, our study found that the head was most targeted, the majority were choking submissions, and intermediate weight divisions recorded a higher number of submission finishes. Future studies should work on addressing the sequelae of submission procedures on the health and safety of fighters.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143657461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vastus lateralis stiffness in roller speed skate athletes evaluated with sonoelastography. When sport meets health.","authors":"Giulia Bongiorno, Benedetta Zampa, Luca Miceli","doi":"10.23736/S0022-4707.25.16531-6","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16531-6","url":null,"abstract":"","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143657462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of various types of muscle contractions on subsequent bench press volume.","authors":"Mohammad Izadi, Guglielmo Pillitteri, Ewan Thomas, Giuseppe Battaglia, Antonino Bianco, Marianna Bellafiore","doi":"10.23736/S0022-4707.25.16343-3","DOIUrl":"https://doi.org/10.23736/S0022-4707.25.16343-3","url":null,"abstract":"<p><strong>Background: </strong>The aim of this study was to examine the effect of different conditioning activities (concentric-only, isometric, eccentric-only, and eccentric-concentric) on the volume of bench press exercises.</p><p><strong>Methods: </strong>Ten male collegiate athletes performed three sets of bench press exercises at 75% of their one-repetition maximum, with a 4-minute rest between sets, until they reached concentric failure. This was done either after one of the four types of contraction activations (concentric-only, isometric, eccentric-only, and eccentric-concentric) or without any conditioning activity, with the order being counterbalanced and randomized across different days. A two-way repeated measures ANOVA was used to assess differences in the number of repetitions, time under tension, and total work across conditions.</p><p><strong>Results: </strong>The results showed that concentric-only contractions significantly increased the number of repetitions and time under tension compared to the control. Moreover, concentric-only contractions resulted in more repetitions and total work than eccentric-concentric contractions. Additionally, the time under tension was longer for concentric-only contractions than for isometric contractions.</p><p><strong>Conclusions: </strong>These findings indicate that concentric-only conditioning activities may improve the volume of subsequent bench press exercises.</p>","PeriodicalId":17013,"journal":{"name":"Journal of Sports Medicine and Physical Fitness","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143649483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}