International journal of sports physiology and performance最新文献

{"title":"Appearance Pressure, Body Image, and Nutrition Practices in Youth Athletes: Implications for Performance.","authors":"Christine Sundgot-Borgen, Jorunn Sundgot-Borgen, Therese Fostervold Mathisen","doi":"10.1123/ijspp.2025-0687","DOIUrl":"10.1123/ijspp.2025-0687","url":null,"abstract":"","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1208-1212"},"PeriodicalIF":3.3,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837683","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":"Microdosing of Flywheel Training: Effects of Low Versus High Training Frequency on Muscle Mass, Strength, and Power.","authors":"Sergio Maroto-Izquierdo, Marina Gómez, Susana López-Ortiz, Fernando Martin-Rivera, Masatoshi Nakamura, Oliver Gonzalo-Skok","doi":"10.1123/ijspp.2025-0582","DOIUrl":"10.1123/ijspp.2025-0582","url":null,"abstract":"<p><strong>Purpose: </strong>This study compared the effects of low-frequency flywheel resistance training (FRT, 1 session/week) and microdosing FRT (5 sessions/week) on muscle architecture, strength, and vertical jump performance in active individuals.</p><p><strong>Methods: </strong>Thirty participants were randomized into a microdosing group (MDG, n = 15) or a control group (CG, n = 15). Both groups completed equalized weekly training volumes (30 sets over 6 wk) using a flywheel leg press. The MDG performed one set daily, whereas the CG performed 5 sets once weekly. Vastus lateralis and rectus femoris muscle thickness, vastus lateralis fascicle length and angle, maximal voluntary isometric contraction in the half-squat exercise, countermovement and drop jump performance, rating of perceived exertion, and delayed-onset muscle soreness were assessed preintervention and postintervention.</p><p><strong>Results: </strong>MDG showed significant (P < .001) increases in muscle thickness (vastus lateralis: 9.8%, 0.21 cm, effect size [ES] = 0.41; and rectus femoris: 7.9%, 0.18 cm, ES = 0.34), fascicle length (11.8%, 0.96 cm, ES = 0.81), and fascicle angle (14.2%, 2.29°, ES = 1.16), drop jump RSI (24.4%, ES = 0.97), and drop jump take-off velocity (5.7%, ES = 0.27) while CG showed no significant changes. Both groups showed improved maximal voluntary isometric contraction (MDG: 27.4%, ES = 0.72; CG: 18.6%; ES = 0.48), countermovement height (MDG, 7.7%, ES = 0.34; CG: 5.9%, ES = 0.17), and countermovement mRSI (MDG, 32.1%, ES = 0.98; CG: 34.0%, ES = 0.60) with no intergroup differences. However, MDG reported significantly (P < .001) lower rating of perceived exertion and delayed-onset muscle soreness scores throughout the intervention.</p><p><strong>Conclusions: </strong>FRT microdosing improved muscle architecture, while strength and power gains were similar to low-frequency FRT. Importantly, microdosing reduced fatigue and soreness, offering a practical alternative during competitive congested schedules or in rehabilitation settings.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1041-1049"},"PeriodicalIF":3.3,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837541","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":"Running Power Analysis of a World Champion: A Case Study From the Spanish Vertical, European Ultra, and World Trail Championships.","authors":"Juan Rodríguez-Medina, Jose A Rodríguez-Marroyo","doi":"10.1123/ijspp.2025-0561","DOIUrl":"10.1123/ijspp.2025-0561","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to describe the running power profile and intensity distribution of a world-class mountain runner across 3 competition formats differing in race duration and elevation gain.</p><p><strong>Methods: </strong>A male world champion was monitored during 3 official championship races: Spanish Vertical Championship (VR; 2.4 km, +929 m), World Sky Championship (SR; 38 km, ±2,750 m), and European SkyUltra Championship (SUR; 62 km, ±3,550 m). Running power was recorded at 1 Hz using a Stryd footpod. Maximal mean power output was calculated for durations from 1 second to 480 minutes, and the time spent within predefined power zones and critical power-based intensity domains was quantified. Comparisons with previously published subelite reference data were expressed as standardized Z-scores.</p><p><strong>Results: </strong>Exercise intensity declined with increasing race duration, with higher mean power (5.1 W·kg-1) and greater relative time >4 W·kg-1 (44.9%) in the VR compared with SR (3.3 W·kg-1, 6.2%) and SUR (2.8 W·kg-1, 2.1%). The athlete showed very large maximal mean power output deviations (Z >+2) in the VR compared with subelite reference data, moderate differences in the SR, and small advantages for efforts ≤20 minutes in the SUR. Most race time was spent within 4 to 6, 3 to 5, and 2 to 4 W·kg-1 in the VR, SR, and SUR, respectively.</p><p><strong>Conclusion: </strong>World-class mountain running performance is characterized by superior power maintenance capacity and extended time at high relative intensities compared with subelite runners. Running power analysis can support the characterization of competition demands and individualized training prescription in mountain running.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1203-1207"},"PeriodicalIF":3.3,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147815374","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":"Feasibility of a Noninvasive Core Temperature Sensor and the Effects of Combined Cooling on Thermal Strain and Performance in Beach Volleyball.","authors":"Xiaoyue Hu, Genki Murakami, Hiroshi Hasegawa","doi":"10.1123/ijspp.2025-0588","DOIUrl":"10.1123/ijspp.2025-0588","url":null,"abstract":"<p><strong>Purpose: </strong>This study evaluated the practical feasibility of the CORE sensor for noninvasive tracking of changes in estimated core body temperature (Est-Tcore) during simulated beach volleyball match-play in the heat and examined the effects of a combined cooling strategy on countermovement jump (CMJ) and T-agility performance.</p><p><strong>Methods: </strong>Eleven competitive male collegiate players completed 2 simulated match-play trials under hot outdoor conditions using a randomized crossover design. The COOL condition included precooling with an ice vest and ice slurry ingestion, followed by additional ice slurry during breaks. The CON condition replicated fluid intake without cooling. Est-Tcore and heart rate (HR) were continuously monitored, and thermal sensation, thermal comfort, and session-rating of perceived exertion were assessed. CMJ and T-agility performance were measured immediately before and after the matches.</p><p><strong>Results: </strong>COOL attenuated the increase in Est-Tcore during warm-up and improved perceptual responses (lower thermal sensation, P < .05), while HR did not differ significantly between conditions. Postmatch CMJ and T-agility did not differ significantly between the conditions, although small-to-moderate effect sizes suggested a possible preservation of performance.</p><p><strong>Conclusion: </strong>The CORE sensor demonstrated practical applicability for tracking relative changes in Est-Tcore during beach volleyball match play. Combined external-internal cooling attenuated thermal strain and improved perceptual responses; however, these effects did not translate into clear benefits for explosive performance outcomes.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"875-884"},"PeriodicalIF":3.3,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147815377","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":"The Power of Consensus Statements in Exercise Science: A New Article Type in IJSPP.","authors":"Marco Beato, Stephen Cheung, Dionne A Noordhof","doi":"10.1123/ijspp.2026-0221","DOIUrl":"10.1123/ijspp.2026-0221","url":null,"abstract":"","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"609-610"},"PeriodicalIF":4.3,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147771236","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":"Menstrual Health and Sports Performance Research; Do We Need to Broaden Our Approach?","authors":"Dionne A Noordhof, Georgie Bruinvels, Robert P Lamberts, Ritva S Mikkonen","doi":"10.1123/ijspp.2025-0661","DOIUrl":"10.1123/ijspp.2025-0661","url":null,"abstract":"<p><strong>Background: </strong>Interest in menstrual health and sports performance has increased, with the majority of research focusing on females with a eumenorrheic menstrual cycle.</p><p><strong>Purpose: </strong>This invited commentary discusses the need to broaden our approach when conducting menstrual health-related research in physically active and athletic populations. We highlight the current state of research regarding the effect of menstrual cycle phase on performance-determining variables, acute training responses, recovery measures, and performance, and question the benefit of continuing to conduct studies that focus only on the most hormonally distinct eumenorrheic menstrual cycle phases. The high prevalence of menstrual disturbances and hormonal contraceptive use, in addition to the challenges and/or possible impracticality of using gold-standard methods of tracking menstrual cycles, regrettably limits the generalizability of findings. Therefore, we identify several knowledge gaps and propose methodological approaches that may improve our understanding of menstrual health in female athletes and the circumstances under which they train and perform.</p><p><strong>Conclusions: </strong>By broadening our research approach, rather than focusing primarily on eumenorrheic cycles, we can provide female athletes and their support teams with more practically applicable evidence-based information to promote health and performance.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1089-1093"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147728643","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":"Framework and Consensus Statement for the Implementation of Sided Game Training in Football (Soccer).","authors":"Marco Beato, Gibson Moreira Praça, Antonio Dello Iacono, José Afonso, Antonio Gualtieri, Andrew Hulton, Naomi Datson, Peter Krustrup, Francisco Tomás González Fernández, Grégory Hallé Petiot, João Cláudio Machado, Piotr Żmijewski, Rodrigo Aquino, Michael King, Nuno André Nunes, Sigrid Olthof, Magni Mohr, Israel Teoldo da Costa, Filipe Manuel Clemente","doi":"10.1123/ijspp.2025-0678","DOIUrl":"10.1123/ijspp.2025-0678","url":null,"abstract":"<p><strong>Background: </strong>Sided games are very popular in football (soccer) training, designed to integrate technical, tactical, and physical development through the manipulation of constraints such as player numbers, pitch size, and rules, among other variables. However, inconsistent terminology, methodological heterogeneity, and limited empirical guidance have hindered its methodological advancement across research and practice.</p><p><strong>Objective: </strong>This consensus aimed to establish a unified framework and evidence-based recommendations for the design, monitoring, and application of sided games in football, providing conceptual clarity and practical guidance for coaches and sport scientists.</p><p><strong>Methods: </strong>A multidisciplinary group of 20 international experts in football science and coaching developed the framework through a 3-stage process: (1) theoretical model development, (2) synthesis of priority areas based on an umbrella review of 12 systematic reviews and meta-analyses, and (3) iterative drafting and blinded consensus voting on statements using a 9-point Likert scale.</p><p><strong>Results: </strong>Seven statements achieved consensus (scores 7-9), defining sided games in soccer, delineating important influencing factors (coach philosophy, environmental, task, and individual constraints), defining monitoring principles, and highlighting benefits and limitations. The consensus confirmed sided games as effective for developing aerobic fitness and tactical-technical behaviors but less effective for strength, power, and high-speed performance adaptations.</p><p><strong>Conclusions: </strong>This consensus provides the first framework for sided game training in football, unifying terminology, and guiding evidence-based design. Its implementation can enhance training coherence, optimize player development, and inform future research addressing existing methodological and population-specific gaps.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"611-620"},"PeriodicalIF":3.3,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716560","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":"Erratum. Can We Just Play? Internal Validity of Assessing Physiological State With a Semistandardized Kicking Drill in Professional Australian Football.","authors":"","doi":"10.1123/ijspp.2026-0191","DOIUrl":"10.1123/ijspp.2026-0191","url":null,"abstract":"","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"694"},"PeriodicalIF":4.3,"publicationDate":"2026-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147662590","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":"Comparison of Heart Rate- and Race Pace-Based Training Prescriptions on Training Execution Accuracy in Recreational Distance Runners.","authors":"Luis Eduardo Ranieri, Juan Del Coso, Christel García-Ortiz, Alfonso Jimenez, Victor Solano, Arturo Casado","doi":"10.1123/ijspp.2025-0578","DOIUrl":"10.1123/ijspp.2025-0578","url":null,"abstract":"<p><strong>Purpose: </strong>While distance running training zones used to prescribe training through the heart rate (HR)-based approach are delimited by HRs associated ventilatory turn points, those in the race pace (RP)-based method are demarcated by percentages of competition average pace at a specific distance. However, no study has directly compared which method better ensures Training Execution Accuracy (TEA) to prescribed intensity zones. This study aimed to compare TEA, quantified as time spent in prescribed intensity zones, between HR- and RP-based training prescriptions during low-intensity continuous (LICT) and high-intensity interval training (HIIT) in distance runners.</p><p><strong>Methods: </strong>Using a randomized crossover design, 37 runners (38.9 [9.3] y) completed an incremental treadmill test to determine maximum oxygen uptake (V˙O2max: 53.7 [6.5] mL·kg-1·min-1), ventilatory turn points, maximal HR, and a 5-km track race to determine RP. Participants performed 2 individualized sessions with either HR- or RP-based prescriptions: a 45-minute LICT and a 5 × 800-m HIIT with 90-second rest.</p><p><strong>Results: </strong>The HR-based training prescription yielded greater TEA (85% [23%] of session time, P = .002) than RP-based method (69% [21%]) during LICT. Similarly, for the HIIT, TEA was higher through HR- (41% [19%], P < .001) than RP-based prescription (27% [14%]).</p><p><strong>Conclusion: </strong>The HR-based approach led to significantly greater time spent within the prescribed intensity zones than the RP-based approach during both LICT and HIIT sessions in endurance runners. TEA during HIIT was low for both prescription methods, highlighting the difficulty of maintaining target intensity at high intensities.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"902-909"},"PeriodicalIF":3.3,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147511966","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 Development of Cardiorespiratory Fitness Parameters in Youth Athletes: A Multiyear Analysis of Peak Aerobic Power and Peak Exercise Performance.","authors":"Katharina Köble, Laura Willinger, Tobias Engl, Frauke Mühlbauer, Stefanie Huber, Maximilian Dettenhofer, Renate Oberhoffer","doi":"10.1123/ijspp.2025-0465","DOIUrl":"10.1123/ijspp.2025-0465","url":null,"abstract":"<p><strong>Purpose: </strong>While the development of cardiorespiratory fitness in normally active children and adolescents is well-documented, longitudinal data on physiological adaptations to training in youth athletes remain limited. This study aimed to investigate the long-term development of cardiorespiratory fitness in young competitive athletes over a period of 2-6 years.</p><p><strong>Methods: </strong>A total of 397 young athletes (48 girls), aged 8-20 years, from a variety of sports underwent up to 6 repeated assessments between 2012 and 2024. Peak exercise performance (Wmax) and peak aerobic power (VO2peak), both were measured via cardiopulmonary exercise testing on an electronically braked cycle ergometer. A linear mixed model analysis was used to evaluate longitudinal changes in VO2peak and Wmax (both normalized to body mass), including body surface area and training intensity (MET-hours/week) as fixed effects, with sex-stratified analyses.</p><p><strong>Results: </strong>A total of 1009 cardiopulmonary exercise testing were analyzed. At baseline, boys showed higher age-specific VO2peak and Wmax, while girls had higher age-specific VO2peak despite similar training intensity. Longitudinally, VO2peak increased significantly with age in mid-adolescent girls and boys, particularly in endurance athletes, and was positively associated with training intensity. Wmax rose with age but was less influenced by training or sport type, showing a stronger relationship with growth-related factors like body surface area.</p><p><strong>Conclusions: </strong>VO2peak development in youth athletes is influenced by age, body size, training intensity, and sport type, making it a sensitive marker of aerobic adaptation. In contrast, Wmax reflects primarily maturational growth and is less responsive to training-specific factors.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"748-757"},"PeriodicalIF":3.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147480715","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}