Sports Health-A Multidisciplinary Approach最新文献

{"title":"The Influence of Limb Dominance on Performance-Based Outcomes After ACL Reconstruction.","authors":"Jordan Hodges, Amelia S Bruce Leicht, Xavier D Thompson, Brian C Werner, David R Diduch, Stephen F Brockmeier, F Winston Gwathmey, Mark D Miller, Joe M Hart","doi":"10.1177/19417381251343089","DOIUrl":"10.1177/19417381251343089","url":null,"abstract":"<p><strong>Background: </strong>Considering limb dominance (LD) may be valuable when utilizing limb symmetry index (LSI) when assessing patients after anterior cruciate ligament reconstruction (ACLR).</p><p><strong>Hypothesis: </strong>Patients will have better performance-based outcomes when index ACLR occurred on the dominant limb (DL) compared with the nondominant limb (NDL).</p><p><strong>Study design: </strong>Observational cross-sectional study.</p><p><strong>Level of evidence: </strong>Level 3.</p><p><strong>Methods: </strong>A total of 279 patients (49.1% female, 20.83 ± 5.23 years; 48% DL surgery) completed a laboratory visit (7.65 ± 1.65 months post-ACLR) assessing LD influence on knee extension and flexion peak torque, center of pressure (COP) distance and velocity, and hop performance. LD was defined as the preferred limb to kick a soccer ball. LSI variables were converted to indicator variables and categorized as \"Pass\" or \"Fail\" based on LSI ≥ 90%.</p><p><strong>Results: </strong>Patient LD and isometric knee extension LSI Pass status were significantly associated (χ² = 10.09; <i>P</i> = 0.001). No additional associations were found between LD and other LSI Pass status variables (<i>P</i> > 0.05). Patients with DL ACLR demonstrated more symmetric knee extension peak torque (<i>P</i> < 0.001, <i>d</i> = 0.42) and 6-meter hop (<i>P</i> = 0.02, <i>d</i> = 0.25) outcomes; NDL was more symmetric during COP distance tests (<i>P</i> = 0.03, <i>d</i> = 0.40). No differences were observed between LD and raw strength or balance measures (<i>P</i> > 0.05). Patients with ACLR on their NDL jumped farther on their contralateral limb for triple-hop (<i>P</i> = 0.03, <i>d</i> = 0.23) but not single-hop (<i>P</i> > 0.05) distance.</p><p><strong>Conclusion: </strong>LD appears to influence isometric knee LSI in patients post-ACLR; patients with surgery on their DL achieved higher symmetry and a greater rate of LSI Pass success for knee extension strength.</p><p><strong>Clinical relevance: </strong>Addressing differences in recovery patterns between DL and NDL may improve rehabilitation precision and guide return-to-activity timelines after ACLR.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251343089"},"PeriodicalIF":2.7,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12187700/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144477823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Return to Sport After Reverse Shoulder Arthroplasty: A Systematic Review.","authors":"Aanya Singh, Victoria Cho, Hassaan Abdel Khalik, Danielle Dagher, Ujash Sheth, Moin Khan","doi":"10.1177/19417381251343083","DOIUrl":"10.1177/19417381251343083","url":null,"abstract":"<p><strong>Context: </strong>Reverse shoulder arthroplasties (RSAs) have become significantly more common in recent decades, and shoulder arthroplasties are increasingly performed on younger, active patient populations. However, the body of evidence evaluating return to sport after RSA is limited.</p><p><strong>Objective: </strong>To evaluate the rates of return to sport after RSA as well as patient-reported outcomes for pain and function.</p><p><strong>Data sources: </strong>A comprehensive search of MEDLINE, EMBASE, and CENTRAL identified studies from inception through October 10, 2023.</p><p><strong>Study selection: </strong>Studies evaluating return to sport after RSA in adult patients (>18 years) were included. Reviews, meta-analyses, non-English language, and studies that did not report return to sport data were excluded. Outcomes included rates of return to sport at any level, and at the same level or higher, as well as patient-reported outcomes.</p><p><strong>Study design: </strong>Systematic review.</p><p><strong>Level of evidence: </strong>Level 4.</p><p><strong>Data extraction: </strong>A descriptive analysis of the included studies was performed.</p><p><strong>Results: </strong>A total of 19 studies (3092 patients) were included. Mean patient age was 72.5 years, and most (58.8%) were female. The mean rate of return to sport at any level was 85.1% (95% CI, 84.6-85.6). The mean rate of return to the same level or higher was 69.5% (95% CI, 67.6-71.4). The mean decrease in visual analog scale pain score was 1.97, whereas ASES and CMS scores increased 64.0 and 35.5 points, respectively. All changes in patient-reported outcomes exceeded the minimal clinically important difference.</p><p><strong>Conclusion: </strong>This review demonstrates a high rate of return to sport after RSA, with a substantial portion of patients maintaining or exceeding their preoperative activity level. Clinically meaningful improvements in pain and function were also observed. Limitations include the predominantly retrospective study design and the high mean patient age, necessitating further research on generalizability and long-term outcomes, particularly in younger populations.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251343083"},"PeriodicalIF":2.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12181194/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144334446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rethinking Lower Extremity Limb Dominance: A Comparison of Performance-Based and Self-Selected Measures.","authors":"Anne Leung, Julie Dyke, Ryan Zarzycki, J Todd Lawrence, Theodore Ganley, Elliot Greenberg","doi":"10.1177/19417381251343085","DOIUrl":"10.1177/19417381251343085","url":null,"abstract":"<p><strong>Background: </strong>Limb dominance implies preferential or asymmetrical performance between limbs. There is currently no consensus regarding limb dominance definition for the lower extremity. Previous work described several methods of subjective reporting for lower extremity limb dominance; however, the correlation between objective performance and subjective perception of limb dominance is poorly understood, particularly among adolescent athletes. The purpose of this study was to test the agreement between objective performance and self-selected limb dominance in 3 different single-leg hopping tasks.</p><p><strong>Hypothesis: </strong>There will be a positive association between self-selected limb dominance and objective performance.</p><p><strong>Study design: </strong>Cross-sectional cohort study.</p><p><strong>Level of evidence: </strong>Level 3.</p><p><strong>Methods: </strong>Self-selected limb dominance was determined by asking, \"Which leg would you use to kick a ball as far as you could?\" Participants performed a series of single-leg hops, and 3-trial means of the single hop (SH), timed hop (TH), and vertical hop (VH) were used for analysis. Paired samples <i>t</i> test or Wilcoxon-signed rank test identified differences in limb performance for each hop test. Chi-square analysis evaluated associations between self-selected limb dominance and objective performance.</p><p><strong>Results: </strong>A total of 352 healthy youth athletes (55% male; mean age, 11.1 ± 1.7 years) participated. There was a small statistically significant difference between limbs on all hop tests. Chi-square analysis revealed no associations (<i>P</i> > 0.05) between self-selected limb dominance and objective performance across all hop test constructs.</p><p><strong>Conclusion: </strong>A single limb performed better on all hop tests by a small and not clinically relevant difference. Perceived limb dominance did not predict performance regardless of hopping task.</p><p><strong>Clinical relevance: </strong>Symmetrical performance on the SH, TH, and VH is normal in uninjured athletes. When returning injured athletes to sport, clinicians should aim for restoring hop test symmetry regardless of whether the injured limb is the perceived dominant limb.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251343085"},"PeriodicalIF":2.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171090/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144303581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association of Loading Asymmetry During Squatting With Loading Asymmetry During Drop Jump After ACL Reconstruction: Implications for Rehabilitation Progression.","authors":"John M Popovich, Liang-Ching Tsai, Marisa Brito, John W Xerogeanes, Mark A Lyle","doi":"10.1177/19417381251343092","DOIUrl":"10.1177/19417381251343092","url":null,"abstract":"<p><strong>Background: </strong>Biomechanical asymmetries after anterior cruciate ligament reconstruction (ACLR) may be amplified and perpetuated by progressing athletes to higher-demand tasks despite impairments in lower-demand tasks.</p><p><strong>Hypotheses: </strong>(1) Between-limb asymmetries in limb loading and joint kinetics will be greater during the higher-demand drop jump compared with squatting. (2) Asymmetries in limb loading and joint kinetics during squatting will be associated with asymmetries during drop jump.</p><p><strong>Study design: </strong>Descriptive laboratory study.</p><p><strong>Level of evidence: </strong>Level 4.</p><p><strong>Methods: </strong>A total of 22 (11 female) participants after primary ACLR (6.4 ± 0.5 months) performed bilateral squat and drop jump tasks. Vertical ground-reaction force (vGRF), knee and hip extensor net joint moments (NJMs), hip/knee mean NJM ratio, and limb symmetry index (LSI) were calculated during the eccentric phase. Comparisons between limbs and across tasks were analyzed using 2-way repeated measures analyses of variance. Pearson's correlations assessed associations between vGRF and NJM LSIs, and hip/knee NJM ratios across tasks.</p><p><strong>Results: </strong>Mean vGRF LSI and knee NJM LSI were significantly more asymmetric during drop jump compared with squatting (79.7 ± 14.9 vs 90.0 ± 11.0%, <i>P</i> < 0.001 and 55.8 ± 17.6 vs 66.4 ± 25.6%, <i>P</i> = 0.02, respectively). Mean vGRF LSI (<i>r</i> = 0.58; <i>P</i> = 0.004) and knee NJM LSI (<i>r</i> = 0.61; <i>P</i> = 0.002) were moderately correlated between tasks. The hip/knee ratio for the ACLR limb correlated strongly between tasks (<i>r</i> = 0.69; <i>P</i> < 0.001); nonsurgical limb: r = 0.39; P = 0.07).</p><p><strong>Conclusion: </strong>Underloading and reduced functional use of the ACLR knee were amplified during the drop jump compared with squatting. Limb mechanics during lower-demand squatting are informative of performance during drop jump.</p><p><strong>Clinical relevance: </strong>Criterion-based rehabilitation guidelines may benefit from requiring symmetry in lower-demand tasks before progressing to higher-level activities to optimize recovery and reduce risk of reinjury.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251343092"},"PeriodicalIF":2.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12170558/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144303580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship Between Patients' Self-Reported Injury Mechanism and MRI Outcomes in Hamstring Muscle Injury: A Prospective Cohort Study on 71 Patients.","authors":"Sylvain Grange, Gustaaf Reurink, Pierre Croisille, Pascal Edouard","doi":"10.1177/19417381251343070","DOIUrl":"10.1177/19417381251343070","url":null,"abstract":"<p><strong>Background: </strong>Hamstring muscle injury (HMI) is the most common injury in sports that require sprints and accelerations. Different HMI subtypes have been described according to the muscle, location, tissue, and severity of the injury. It is of interest to determine whether these subtypes are related to a particular clinical injury mechanism.</p><p><strong>Hypothesis: </strong>There would be an association between the muscle involved and the injury mechanism.</p><p><strong>Study design: </strong>Prospective, multicenter, observational cohort study.</p><p><strong>Level of evidence: </strong>Level 3.</p><p><strong>Methods: </strong>All patients underwent postinjury magnetic resonance imaging (MRI) and were assessed for their mechanism of injury using a survey. Statistical analyses used chi squared test and analysis of variance.</p><p><strong>Results: </strong>A total of 71 patients were included in the present study. MRI scans were performed within 7.5 ± 4.9 days of injury. There was no significant association between the HMI mechanism and the injured muscle (χ² = 6.86; <i>P</i> = 0.34), or with proximo-distal position (χ² = 20.28; <i>P</i> = 0.16). There was a significant association between HMI mechanism and HMI grade (χ² = 23.7; <i>P</i> < 0.001) and the HMI volume (F(3,67) = 5.223; <i>P</i> = 0.003) with significant higher severity and higher volume in stretching than in running mechanisms (<i>P</i> = 0.002).</p><p><strong>Conclusion: </strong>We showed an association between HMI mechanism and MRI scan grade and volume, with significant higher injury grade and larger volume in stretching mechanism.</p><p><strong>Clinical relevance: </strong>These differences, depending on the mechanism of injury, may lead to changes in clinical practice.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251343070"},"PeriodicalIF":2.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12165957/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144287131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitoring Internal and External Training Loads in Female Artistic Roller Skating: A Longitudinal Study.","authors":"André Rebelo, Diogo V Martinho, Inês G Pires, Ricardo Lima, Fábio Y Nakamura","doi":"10.1177/19417381251334641","DOIUrl":"10.1177/19417381251334641","url":null,"abstract":"<p><strong>Background: </strong>Artistic roller skating is a sport that involves high physical demands, particularly in the free skating discipline, where jumps are critical. Managing training loads is essential for optimizing performance and preventing injuries.</p><p><strong>Hypothesis: </strong>To investigate the internal and external training loads of female artistic roller skating athletes and to analyze the relationships between these loads components.</p><p><strong>Study design: </strong>Cohort study.</p><p><strong>Level of evidence: </strong>Level 3.</p><p><strong>Methods: </strong>A total of 15 female artistic roller skating athletes were monitored over a 4-week mesocycle leading up to the National Championship. Internal training load (ITL) was measured using the session rating of perceived exertion (sRPE), whereas external training load (ETL) was assessed with an inertial measurement unit capturing jumps and energy. Repeated measures analysis of variance (RMANOVA) and correlation analysis were conducted.</p><p><strong>Results: </strong>The RMANOVA revealed significant differences in monotony and strain of ITL, as well as in the monotony of jumps and energy. Significant correlations were found between ITL and ETL metrics, with higher sRPE and daily ITL associated with increased jumps and energy.</p><p><strong>Conclusion: </strong>The findings highlight the interrelationships between internal and external load metrics, with higher perceived exertion and daily training loads associated with increased external workload, particularly in jump frequency and energy. In addition, training monotony and strain fluctuated across microcycles, with notable increases observed as the competition approached. These results emphasize the importance of systematically monitoring both internal and external training loads, including monotony and strain, to better understand workload dynamics and guide training adjustments.</p><p><strong>Clinical relevance: </strong>The findings provide practical insights for coaches on how to balance training intensity and volume to enhance performance and prevent overtraining and injuries.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251334641"},"PeriodicalIF":2.7,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12149159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144250866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Motor Learning of Knee Joint Kinematics in Patients Within the First Year After ACL Reconstruction.","authors":"Elanna K Arhos, Jonathan M Wood, Karin Grävare Silbernagel, Susanne M Morton","doi":"10.1177/19417381251338806","DOIUrl":"10.1177/19417381251338806","url":null,"abstract":"<p><strong>Background: </strong>Undergoing anterior cruciate ligament (ACL) reconstruction (ACLR) does not normalize the asymmetric knee biomechanics during gait that are related to the later development of post-traumatic osteoarthritis. ACL rupture and reconstruction have negative neuromuscular implications, disrupting knee joint afferent inputs that may be essential for central nervous system adaptability and motor learning. Here, we examined the ability of patients after ACLR to adapt knee joint biomechanics using a split-belt treadmill locomotor learning paradigm compared with uninjured controls.</p><p><strong>Hypothesis: </strong>Patients after ACLR will be able to adapt and retain their knee joint mechanics, but to a lesser extent than controls.</p><p><strong>Study design: </strong>Cross-sectional study.</p><p><strong>Level of evidence: </strong>Level III.</p><p><strong>Methods: </strong>We examined neuromuscular adaptations (ie, motor learning) using an evidence-based split-belt treadmill adaptation paradigm in 15 patients (20.8 ± 3.5 years old, 9 female), 3 to 9 months after ACLR and 15 control patients. During adaptation, the 2 treadmill belts were split (ie, moving at different speeds) to induce motor learning of new knee joint kinematic patterns. Three-dimensional motion capture was used to record joint kinematics and assess adaptation of knee flexion and extension angles. We also measured quadriceps strength, knee joint proprioception, and other markers of ACLR recovery.</p><p><strong>Results: </strong>After ACLR, patients showed flexibility in motor patterns for peak knee flexion and extension angles. Our data showed no difference between patients after ACLR and uninjured controls in the extent of adaptation of either kinematic variable.</p><p><strong>Conclusion: </strong>These data suggest that knee kinematics are malleable during rehabilitation, and demonstrate adaptability in the nervous system for knee joint angles during gait.</p><p><strong>Clinical relevance: </strong>Current clinical interventions and evidence-based rehabilitation programs have not been successful in restoring gait mechanics. The current work indicates motor learning-based approaches can modify knee joint kinematics and therefore may be worthy of consideration in future interventions to address poor gait mechanics after ACLR.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251338806"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12125006/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Return to Long-Distance Running After Hip Arthroscopy for Femoroacetabular Impingement.","authors":"Niv Marom, Reena J Olsen, Joost Burger, Matthew S Dooley, Anil H Ranawat, Bryan T Kelly, Danyal H Nawabi","doi":"10.1177/19417381251340072","DOIUrl":"10.1177/19417381251340072","url":null,"abstract":"<p><strong>Background: </strong>Arthroscopic hip surgery for femoroacetabular impingement syndrome (FAIS) has high rates of return to sport; however, patient return to long-distance running is unclear.</p><p><strong>Hypotheses: </strong>(1) Long-distance runners undergoing arthroscopic hip surgery for FAIS are a distinctive subgroup in terms of demographics, hip injury characteristics, and running metrics. (2) Most patients will return to general running but a lower proportion return to long-distance running after arthroscopic hip surgery.</p><p><strong>Study design: </strong>Case series.</p><p><strong>Level of evidence: </strong>Level 4.</p><p><strong>Methods: </strong>An institutional hip preservation registry was reviewed retrospectively for long-distance runners (half marathons, marathons) who underwent primary hip arthroscopies for FAIS between March 2008 and January 2018. Patient demographics, injury characteristics, and clinical and radiographic findings were recorded. Multivariable logistic regression analysis identified potential risk factors for not returning to long-distance running.</p><p><strong>Results: </strong>Sixty-eight (78 hips) long-distance runners (mean patient age, 37.8 ± 8.9 years; 38 (56%) female; mean weekly running mileage before injury, 34.5 ± 16.9 miles) were included. Overall, 50 runners (74%) returned to any running, of which 25 (50%) returned to long-distance running, completing half/full marathons races after surgery. Most common reasons for not returning to running were pain or discomfort (50%) followed by fear of reinjury (22%), and additional different injuries (22%). Multivariable logistic regression analysis revealed female runners (odds ratio, 0.2; CI, 0.0-0.9; <i>P</i> = 0.03) were less likely to return to long-distance running.</p><p><strong>Conclusions: </strong>Most (74%) long distance runners returned to running after hip arthroscopic treatment for FAIS; however, only 37% returned to long-distance running. Satisfaction from surgery was not necessarily associated with return to running. Female long-distance runners were less likely to return to long-distance running after surgery.</p><p><strong>Clinical relevance: </strong>Study findings provide helpful context for clinicians counseling patients with symptomatic FAIS who are considering hip arthroscopy and are concerned about return to long-distance running.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251340072"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12125011/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Match Demands and Perceived Exertion of Cerebral Palsy Soccer National Team Players.","authors":"Daniel Wartner, Rick Cost, J C Andersen, José M Oliva-Lozano","doi":"10.1177/19417381251338801","DOIUrl":"10.1177/19417381251338801","url":null,"abstract":"<p><strong>Background: </strong>The aims of this study were to analyze match demands and perceptual responses of cerebral palsy soccer national team players. Specifically, to identify whether variations in match demands exist between playing positions and between halves.</p><p><strong>Hypothesis: </strong>Differences between playing positions exist and match demands differ from first to second half.</p><p><strong>Study design: </strong>Cohort study.</p><p><strong>Level of evidence: </strong>Level 3.</p><p><strong>Methods: </strong>An observational, longitudinal study was conducted over the 2022-2023 season. Electronic performance and tracking systems collected physical output, whereas perceptual responses were collected through ratings of perceived exertion postmatch.</p><p><strong>Results: </strong>Playing position significantly affected all variables (<i>F</i>_(4,66) = 4.05-73.31; <i>P</i> < .001; η_p² = 0.20-0.82). Midfielders had the greatest average physical output in all variables, except for high-intensity accelerations per minute (forwards = ~0.19 count/min) and maximum velocity (full-backs = ~28.87 km/h). Match half had no significant effect on any variable (<i>F</i>_(4,66) = 0.00-1.38; <i>P</i> > .05; η_p² = 0.00-0.02), except for distance per minute, which was usually greater in the first half than second half (<i>F</i>_(1,66) = 7.15; <i>P</i> = .01; η_p² = 0.10). Regarding perceptual response, playing position had a significant effect, with goalkeepers having significantly lower ratings of perceived exertion compared with the other positions (<i>P</i> < .05).</p><p><strong>Conclusion: </strong>Playing position significantly affected all variables, with goalkeepers showing the lowest demands, followed by central defenders. Midfielders had the highest physical output across most variables, except for high-intensity accelerations per minute (forwards) and maximum velocity (full-backs). Match half had no significant effect on any variable, except for distance per minute.</p><p><strong>Clinical relevance: </strong>Understanding match demands and positional differences in cerebral palsy soccer helps coaches plan tailored training sessions and drills to meet specific physical outputs. This knowledge supports training periodization, optimal player performance, and recovery. Insights into physical challenges for each position assist in scouting and adjusting training intensity.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251338801"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12125012/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Search for the Holy Grail in Running Biomechanics: Is There an Ideal Movement Profile for Minimizing Mechanical Overload?","authors":"Gustavo Leporace, Eliane C Guadagnin, Felipe P Carpes, Jonathan Gustafson, Felipe F Gonzalez, Jorge Chahla, Leonardo Metsavaht","doi":"10.1177/19417381251338267","DOIUrl":"10.1177/19417381251338267","url":null,"abstract":"<p><strong>Background: </strong>Running biomechanics can influence injury risk, but whether the combined effect of different biomechanical factors can be identified by individual running profiles remains unclear. Here, we identified distinct biomechanical profiles among healthy runners, examined lower limb mechanical load characteristics, and evaluated potential implications for injury risk.</p><p><strong>Hypothesis: </strong>Multiple factors would serve as a common denominator allowing identification of specific patterns.</p><p><strong>Study design: </strong>Cross-sectional.</p><p><strong>Level of evidence: </strong>Level 2.</p><p><strong>Methods: </strong>Step cadence, stance time, vertical oscillation, duty factor, vertical stiffness, peak ground reaction force (GRF), and anteroposterior, lateral, and vertical smoothness were determined from 3-dimensional kinematic data from 79 healthy runners using a treadmill at 2.92 m/s. Principal component analysis, self-organizing maps, and K-means clustering techniques delineated distinct biomechanical running profiles. Mutual information analysis, Kruskal-Wallis, and Pearson's Chi-squared tests were conducted.</p><p><strong>Results: </strong>Five biomechanical profiles (P1-P5) demonstrated different running mechanical characteristics: P1 exhibited low cumulative and peak mechanical load due to a combination of high duty factor, low step cadence, and longer stance time; P2 showed characteristics associated with the lowest peak mechanical load due to reduced peak GRF and greater smoothness; P3 and P5 showed contrasting running patterns, but maintained moderate smoothness and peak GRF; and P4 exhibited the highest peak mechanical load, driven by high GRF, low duty factor, and high vertical oscillation.</p><p><strong>Conclusion: </strong>The 5 profiles appear to be associated with different lower limb load patterns, highlighting previously unrecognized connections between biomechanical variables during running. Some variables contribute to increased peak and cumulative load, whereas others help reduce it, underscoring the complex interplay of biomechanical factors in running.</p><p><strong>Clinical relevance: </strong>Identifying distinct running profiles can help clinicians better understand individual variations in mechanical load and injury risk, thus informing targeted interventions, such as personalized training adjustments or rehabilitation programs, to prevent injuries and enhance performance in runners.</p>","PeriodicalId":54276,"journal":{"name":"Sports Health-A Multidisciplinary Approach","volume":" ","pages":"19417381251338267"},"PeriodicalIF":2.7,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12095228/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}