Journal of Dance Medicine & Science最新文献

{"title":"Epidemiology of Patients With Dance-Related Injuries Presenting to Medical Staff at Breaking Competitions in the United States, 2021-2023.","authors":"Joshua Honrado, Scott Lee, Aaron Ngor, TeeJay Lee, Soutrik Mandal","doi":"10.1177/1089313X251317592","DOIUrl":"https://doi.org/10.1177/1089313X251317592","url":null,"abstract":"<p><p><b>Introduction:</b> There is a dearth of dance-related injury epidemiology within the breaking competition setting. Breaking injury surveillance data has predominantly been collected retrospectively at healthcare facilities or through survey research. <b>Methods:</b> Medical staff were available at 6 breaking competitions between 2021 and 2023 to provide musculoskeletal care and triage. In addition to consent of treatment, participants provided their age, gender, and injured body area(s), symptom onset, and description. A total of 157 patient reports were obtained, de-identified, and utilized for comparative frequency and logistic regression analysis. <b>Results:</b> The most common body areas that breakers sought care for were: 39% (n = 61) shoulder, 32% (n = 51) neck, 32% (n = 50) lower back, and 25% (n = 40) upper back. The majority of injuries 61% (n = 95) occurred >3 months prior to competition. The most common descriptions of injury were: 57% (n = 89) tightness, 46% (n = 73) pain, and 33% (n = 52) soreness. Logistic regression analysis revealed that: older patients have higher odds of experiencing the issue during or before the competition (<i>P</i>-value = .003); and that age was the only variable that was borderline statistically significant for hip injury (<i>P</i>-value = .055). <b>Conclusion:</b> The highest frequency of dance-related injury within a breaking competition setting cohort was found to be in the shoulder, neck, and back. The highest frequency of injury description were tightness, pain, and soreness. There was a large frequency of chronic injuries that were seen, and older patients were found to have a higher odds of experiencing and seeking medical treatment for a chronic injury. Access to injury management services and education for the shoulder, neck, and back should be provided at breaking competitions to improve health outcomes. <b>Level of Evidence:</b> Level 4.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251317592"},"PeriodicalIF":1.1,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143366205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Injury Prevention Strategies in Dance: A Systematic Review.","authors":"Meghan L Critchley, Ebonie Rio, Kenzie B Friesen, Anu M Räisänen, Sarah J Kenny, Carolyn A Emery","doi":"10.1177/1089313X251314987","DOIUrl":"https://doi.org/10.1177/1089313X251314987","url":null,"abstract":"<p><p><b>Background:</b> Dance is a popular activity worldwide that comes with inherently high injury rates. Despite the call for implementation and evaluation of injury prevention strategies, the utility and efficacy of injury prevention practices in dance are unknown. <b>Objective:</b> The primary objective of this systematic review was to describe dance-specific injury prevention strategies in any dance population. The secondary objective was to evaluate the effectiveness of these strategies in the reduction of injury prevalence or incidence rates. <b>Methods:</b> Six electronic databases were searched to March 2024 (Medline, EMBASE, SportDiscus, CINAHL, SCOPUS, Cochrane). Selected studies met a priori inclusion criteria that required original data describing an injury prevention strategy for any genre of dance. Studies were excluded if; no injury outcomes were reported, no injury prevention strategy was utilized, or if dance was used as a therapeutic intervention/fitness. Two reviewers independently assessed abstracts and full texts for inclusion. Study quality was evaluated using the Joanna Briggs Institute Level of Evidence tool. <b>Results:</b> From 2209 potentially relevant records, 8 studies met criteria for inclusion. Injury prevention strategies were diverse across conditioning and exercise programs, neuromuscular training warm-up, psychological coping skills training, and educational programs, with a range of duration and adherence measures. Due to inconsistent injury surveillance methodology, efficacy of these programs could not be determined. Quality of included studies was moderate to high, with moderate to low risk of bias. <b>Conclusions:</b> Efficacy and adherence to dance-specific injury prevention strategies are understudied in the dance science literature. Conditioning and exercise programs are currently the most common injury prevention strategies, with initial evidence suggesting they may be efficacious in reducing injury rates. Further research using valid injury surveillance methodologies and standardized injury definitions to examine the efficacy of these strategies in reducing dance-related injury is needed. <b>Level of evidence:</b> I.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251314987"},"PeriodicalIF":1.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143190568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neuromuscular Strategies in Dominant and Non-Dominant Legs in Dancers During Dynamic Balance Tasks.","authors":"Iseul Jo, Eun-Ji Hong, Hye-Won Yoon, Younha Ma, Sae-Yong Lee, Hae-Dong Lee","doi":"10.1177/1089313X241309781","DOIUrl":"https://doi.org/10.1177/1089313X241309781","url":null,"abstract":"<p><p><b>Introduction:</b> Ballet-based dance training emphasizes the equal development of both legs. However, dancers often perceive differences between their legs during balance or landing. There still needs to be more consensus on the functional difference between dominant (D) and non-dominant legs (ND). Therefore, this study investigated both legs' neuromuscular strategy in single-leg balance and landing based on leg dominance. <b>Methods:</b> Thirteen female dancers (age: 22.2 ± 2.8 years) with no history of ankle injuries in the past year participated in the study. Based on the questionnaire, the dominant leg was set, which legs were preferred to balance, generate strength, and land. Joint kinematics and ground reaction force (GRF) were analyzed using a three-dimensional motion analysis system and force plates during single-leg balance (SLB), <i>passé balance</i> (PB), <i>sissone simple</i> (SS), and <i>sissone ouverte</i> (SO). The tibialis anterior (TA), medial gastrocnemius (MG), peroneus longus (PL), and gluteus medius (GM) activation were measured by wireless surface electromyography (EMG). Displacement (cm) of the center of pressure and the dynamic postural stability index (DPSI), a balanced score post dynamic tasks, were calculated. <b>Results:</b> Bilateral leg balance ability was observed based on joint kinematics and DPSI during SLB, PB, SS, and SO. Higher TA activity was noted during PB in ND legs than in D legs (<i>P</i> = .038). PL activation was significantly increased in ND legs (69.3 ± 34.4%) than in D legs (45.6 ± 19.2%) before contact during SS and SO (<i>P</i> < .05). After landing with ND legs, dancers regulated postural stability with increasing TA activation (<i>P</i> < .05). <b>Conclusions:</b> Pre-activation of PL before landing with ND legs increases ankle stiffness, enhancing stability. Conversely, D legs achieve balance with lower activation levels. The findings highlight significant differences between legs in dancers, suggesting that leg dominance should be considered in future training and performance strategies.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X241309781"},"PeriodicalIF":1.1,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Frequency of Upper Body Muscular Demands in Contemporary and Ballet Dance Performance: A Cross Sectional Performance Analysis.","authors":"Claire Farmer, James Brouner","doi":"10.1177/1089313X251313664","DOIUrl":"https://doi.org/10.1177/1089313X251313664","url":null,"abstract":"<p><p><b>Introduction:</b> There is currently little research relating specifically to the muscular strength and endurance requirements of the upper body such as lifts at varying heights, ground floor contact with the hands and inversions such as handstands. Enhanced understanding of muscular demands can inform training program design to build physical tolerance to meet the demand of the activity. The aim of this study was to ascertain the frequency of upper body muscular skills in contemporary and ballet dance performance. <b>Methods:</b> Analysis of 46 individual ballet performers (F = 23, M = 23) from 12 performances (duration 63.5 ± 44.5 minutes) and 44 individual contemporary performers (F = 21, M = 23) from 12 performances (duration 35.7 ± 4.3 minutes) was carried out. Frequency of upper body skills was recorded using Dartfish Easytag-Note and converted to mean frequency per minute of total performance and per performance by genre and by sex. Differences in frequency between genre were analyzed via Mann-Whitney <i>U</i>. Phase two analyzed differences between sex via Mann-Whitney <i>U</i>. Finally, analysis of differences between sex within dance genre was carried out via Wilcoxon signed rank test. Significance was accepted at <i>P</i> < .05. <b>Results:</b> A significant difference was apparent between ballet and contemporary dance for holding own weight (<i>P</i> < .05) with a greater total mean frequency within contemporary performances of 8.50 ± 9.03 compared to a total mean frequency of 1.51 ± 3.13 within ballet performances. Additionally, there was a significant difference for above shoulder assisted lift (<i>P</i> < .05) when comparing male dancers, with male contemporary dancers carrying out significantly more (9.82 ± 8.56) per performance than male ballet dancers (2.33 ± 4.66). A higher mean frequency of below shoulder lifts than above shoulder lifts was also noted, with the majority of above shoulder lifts remaining at eye level. <b>Conclusion:</b> Training programs must prepare dancers for upper body movements that consider differing biomechanical demands of a variety of lifts and inversions.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251313664"},"PeriodicalIF":1.1,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pointe Assessment Screen Shah Edison (PASSE) for Pointe Readiness: A Pilot Study.","authors":"Selina Shah, Jacquelyn Valenzuela-Moss, Dana Sheng, Tishya A L Wren, Tracy Zaslow, Bianca Edison","doi":"10.1177/1089313X241307736","DOIUrl":"https://doi.org/10.1177/1089313X241307736","url":null,"abstract":"<p><p><b>Introduction:</b> As demanding as dancing en pointe is, no universal standard exists to determine when a ballet dancer is ready to advance to this next level. The goal of this study was to provide preliminarily tested and reliable guidelines for a screening tool that can be used to determine (1) if a dancer is ready for pointe, (2) reasons why a dancer may not be ready, and (3) areas for improvement to guide training and preparation. <b>Methods:</b> <i>Participants:</i> Seventeen dancers aged 9 to 17 years with a minimum 4 years of ballet and who were either possibly ready for pointe or had been in pointe class less than 3 months participated in this study. <i>Study Design:</i> Dancers were prospectively assessed by two physicians using the Pointe Assessment Screening Shah Edison (PASSÉ) tool for assessing pointe readiness. Interrater reliability and the relationship of individual tests to overall pointe readiness were evaluated using descriptive statistics, kappa, diagnostic metrics, and logistic regression. <i>Setting:</i> Private practice office; ballet studios. <b>Results:</b> There was 94% agreement among raters in determining overall pointe readiness, and individual tests all had significant interrater agreement ranging from 62% to 97% (<i>P</i> ≤ .04). Ankle plantarflexion >90° (100%), stability in grand plié (100%), and holding relevé (96%) had the highest sensitivity for overall readiness, indicating their necessity to advance to pointe. The tests with greatest specificity for identifying lack of readiness were relevé passé (72%), sauté (72%), and airplane (69%). <b>Conclusions:</b> This study provides preliminary testing of a reliable screening tool, the PASSÉ screen, which can be utilized to determine pointe readiness with excellent interrater agreement for the overall pass/fail and significant agreement for tests that contribute to readiness. At minimum, dancers must be able to pass the grand plié, ankle plantar flexion, and relevé tests. Also passing the sauté, relevé passé, and airplane tests indicates high likelihood of readiness.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X241307736"},"PeriodicalIF":1.1,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142899315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Limb Symmetry Index in Collegiate Dancers Using the Modified Star Excursion Balance Test and Single Leg Hops.","authors":"Kelley R Wiese, Jatin P Ambegaonkar, Jena Hansen-Honeycutt","doi":"10.1177/1089313X241304014","DOIUrl":"https://doi.org/10.1177/1089313X241304014","url":null,"abstract":"<p><p><b>Introduction:</b> Dance is physically demanding and often involves unilateral movements performed within a small base of support. Prior authors have reported that dancers use one leg preferentially over the other (ie, lower extremity asymmetry). Increased leg asymmetry-quantified using the Limb Symmetry Index (LSI), is associated with increased injury risk. Clinicians often use LSI to make return-to-performance decisions (eg, >85% performance on injured vs non-injured limb). However, limited research has examined leg symmetry in collegiate dancers. <b>Purpose</b>: To examine LSI in collegiate dancers using the modified star excursion balance test (mSEBT) and single-leg hop test (SLH). <b>Methods</b>: 120 healthy collegiate dancers (105 females, 15 males; 18.31 ± 0.80 years; 164.18 ± 7.12 cm; 61.18 ± 8.46 kg) performed the mSEBT (normalized to % leg-length: LL) in the anterior, posteromedial, and posterolateral directions and the SLH test (normalized to % body height: BH) across both legs using previously published guidelines. mSEBT scores were averaged for all three directions per leg. SLH scores were averaged per leg. LSI was calculated as (lower value/higher value) × 100 to obtain a percentage. <b>Results</b>: Mean mSEBT scores were 95.7 ± 14.2%LL (lower score) and 96.6 ± 14.3%LL (higher score). Dancers LSI for mSEBT was 99.1 ± 0.9%. Mean SLH scores were 82.8 ± 13.3%BH (lower score) and 86.4 ± 13.5%BH (higher score). Dancers LSI for SLH was 95.9 ± 3.5%. <b>Conclusions</b>: Dancers' LSI% was greater than 90% for mSEBT and SLH, concurrent with the normal values of LSI > 90% in healthy, physically active adults. Dancers displayed lower leg symmetry. Practitioners can thus use the contralateral leg as a reference for return-to-performance decisions following injury in dancers. LSI should be integrated into a comprehensive screening process to identify large (>85%) asymmetries and guide training programs post-injury to assist educators and practitioners' evidence-based return-to-performance decisions. Future researchers should examine LSI in other dance genres and across levels.<b>Level of Evidence</b>: 2C.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X241304014"},"PeriodicalIF":1.1,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142802702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"10-Week Ballroom Dance Program Improves Mood and Influences Health-Related Elements in Healthy Middle-Aged Adults.","authors":"Kaori Hirahara, Misaki Matsunaga, Kana Hirayama, Takuma Matsunami, Kosuke Fukao","doi":"10.1177/1089313X241302358","DOIUrl":"https://doi.org/10.1177/1089313X241302358","url":null,"abstract":"<p><p><b>Introduction:</b> Sedentary lifestyles remain a persistent health issue in Japan. Ballroom dancing has recently gained attention as a potential means of maintaining physical activity, but there are very few reports on Japanese subjects. Exploratory research is therefore needed to investigate the effects of ballroom dancing on the physical and mental health of sedentary middle-aged Japanese adults. The aim of this study was to assess the impact of ballroom dancing on various health-related physical and psychological outcomes in middle-aged adults compared to a control group. <b>Methods:</b> A parallel-group study was carried out. Thirty healthy but inactive middle-aged adults with no previous dance experience were divided into 2 groups: an intervention group which participated in a recreational level ballroom dance program for 10 weeks (60 minutes, once per week) and a control group which had no dance lessons. Subjects completed questionnaires regarding subjective mood changes and daily physical activity. Objective measures of physical fitness, oxidative stress, antioxidant capacity, and autonomic nervous system function were also assessed before (T0) and after 10 weeks (T11) of dance practice. <b>Results:</b> In the subjective questionnaire, the Profile of Mood States 2 (POMS^®2) survey, one of the health-related indicators, T-scores of the Total Mood Disturbance (TMD) after the intervention showed a difference (<i>P</i> = .014) between the dance group and the control group. In post hoc tests, increases of autonomic activity and number of days of high-intensity physical activity correlated positively with a reduction in TMD in the dance group. <b>Conclusion:</b> Among inactive middle-aged adults, participation in weekly ballroom dance lessons for 10 weeks improved their psychological mood compared to a control group. The improvement was found to have the positive effects of activating autonomic nervous system activity and increasing high-intensity physical activity. The results suggest that ballroom dancing may be effective in improving exercise habits and physical and mental health.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X241302358"},"PeriodicalIF":1.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142787378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship Among Upper, Middle, and Lower Thoracic Vertebrae and Upper and Lower Lumbar Vertebrae in Dancers During Arabesque.","authors":"Moe Nagashima, Tomoya Takabayashi, Takanori Kikumoto, Masayoshi Kubo","doi":"10.1177/1089313X241301262","DOIUrl":"https://doi.org/10.1177/1089313X241301262","url":null,"abstract":"<p><p><b>Background:</b> Low back pain is a common disorder with high severity among dancers. Since Arabesque used in dance is more likely to cause lower back pain, it is important to prevent the onset of lower back pain during arabesque. Previous studies are investigating motion of the lumbar vertebrae during various tasks in targeting dancers. However, since the thoracic and lumbar vertebrae are connected, it is necessary to assess including motion of the thoracic spine. The purpose of this study was to clarify the relationship between the upper, middle, and lower thoracic vertebrae and the upper and lower lumbar vertebrae in dancers during arabesque. <b>Methods:</b> The participants were 13 university students with dance experience, and they performed double-standing and arabesque tasks. During the tasks, the positions of reflective markers attached to the spine (upper, middle, and lower thoracic vertebrae, and upper and lower lumbar vertebrae) were measured using a three-dimensional motion analysis system. The amount of change in the spinal angle of during standing and arabesque were calculated based on positions of spinal markers, and the relationship between the amount of change each spinal region (6 pairs) were analyzed by using Pearson's correlation test. <b>Results:</b> A significant negative correlation was observed between the amount of change in the angle of the middle thoracic vertebrae and the amount of change in the upper lumbar vertebrae (<i>r</i> = -.66, <i>P</i> = .013), which means that as the movement of the middle thoracic vertebrae increases, the movement of the upper lumbar vertebrae decreases. No significant correlation was observed between other spinal angles (<i>P</i> > .05). <b>Conclusion:</b> The results of this study suggest that increasing mobility in the middle thoracic vertebrae may be able to prevent hyperextension of the upper lumbar vertebrae, leading to the prevention of upper back pain in dancers.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X241301262"},"PeriodicalIF":1.1,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the Physiological and Psychological Impact of Ballet Performances Across Age Cohorts: An Observational Uncontrolled Case Study.","authors":"L W Judge, J Perkins, M Wells, O R Huffman, A Leger, R Fontenot, B Henriksen, D M Bellar","doi":"10.1177/1089313X241254269","DOIUrl":"10.1177/1089313X241254269","url":null,"abstract":"<p><p><b>Background:</b> Ballet, epitomized by iconic seasonal performances such as \"The Nutcracker,\" combines artistic expression with considerable physical demands. This study investigated the physiological and psychological responses of ballet dancers to the demands of intensive training and performance, with a specific focus on \"The Nutcracker.\" <b>Methods:</b> Thirty- eight dancers volunteered for the study, including 6 youths (10.5 + 1.8 years, n = 6 female), 7 adolescents (15.4 + 1.1 years, n = 5 female), and 25 adults (21.1 + 2.1 years, n = 20 female). Employing an uncontrolled observational design, this pilot study tracked key biomarkers such as CK-MM for muscle damage and B-ALP for bone health, alongside psychological measures via PANAS-C/PANAS and DASS-21. <b>Results:</b> Significant findings included a post-performance reduction in cortisol and depression levels. <b>Conclusion:</b> These insights advocate for tailored strategies that address the multifaceted needs of dancers, acknowledging the intricate balance required to maintain peak performance and overall health within the demanding realm of professional ballet.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"240-248"},"PeriodicalIF":1.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141261735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cueing Dancers to \"Externally Rotate From the Hips\" Improves Potentially Injurious Ankle Joint Angles and Contact Forces During a Demipointe Ballet Position.","authors":"Tessa Hulburt, Laura Santos, Katherine Moos, David Popoli, Kristen Nicholson","doi":"10.1177/1089313X241246601","DOIUrl":"10.1177/1089313X241246601","url":null,"abstract":"<p><p><b>Introduction:</b> The <i>demipointe</i> dance position puts the ankle at high risk of overuse injury and posteromedial ankle pain due to increased ankle valgus forces. Previous work has shown that creating lower limb external rotation intrinsic to <i>demipointe</i> with hip external rotation reduces foot pronation that causes ankle valgus stress. Therefore, the purpose of this work was to examine long axis rotation kinematics of the hip, knee, and ankle as well as the ankle joint contact forces in <i>demipointe</i> to better understand the biomechanical impact(s) of the specific cue to increase hip external rotation in this position. <b>Methods:</b> Three-dimensional motion capture and force plate data were collected from 23 contemporary or ballet pre-professional dancers (age: 19.94 ± 1.34 years) who each performed 3 dancer-selected (DS) <i>demipointe</i> positions and 3 <i>demipointes</i> with the cue to \"externally rotate from the hips.\" <b>Results:</b> The cue to increase hip external rotation resulted in significantly increased hip external rotation angle [DS: 37.5; 9.42° (median; interquartile range), Cued: 39.9; 10.8°, <i>P</i> < .0001)] and significantly reduced ankle eversion angle (DS: 8.13; 11.4°, Cued: 7.77; 10.3°, <i>P</i> = .023). However, total turnout angle was also significantly decreased (DS: 75.8; 7.91°, Cued: 75.4; 7.73°, <i>P</i> < .0001), which is undesirable for proper esthetic performance of <i>demipointe</i>. Total ankle joint force remained unchanged, but ankle eversion force was significantly reduced (DS: 15.3; 4.18 %bodyweight (BW), Cued: 14.7; 4.99 %BW, <i>P</i> < .0001) with use of the cue. <b>Discussion/Conclusion:</b> Utilization of a cue to increase hip external rotation was successful in increasing hip contribution to turnout angle and reducing injurious ankle eversion force. Further coaching using this cue may allow dancers to produce these advantageous mechanics while maintaining turnout angle.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"211-218"},"PeriodicalIF":1.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140852835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}