Medical problems of performing artists最新文献

{"title":"Association Between Bone Maturation, Menstrual Cycle, Hypermobility, Scoliosis, and Low Back Pain in Pre-Professional Female Adolescent Dancers.","authors":"J Everaert, B Fierens, N Steinberg, P Mahaudens, F Balagué, P Gielen, J Gielen, E van Breda, N Roussel","doi":"10.21091/mppa.2024.04019","DOIUrl":"https://doi.org/10.21091/mppa.2024.04019","url":null,"abstract":"<p><strong>Background: </strong>Many adult dancers suffer from low back pain (LBP), which interferes with their movement strategies. A group that merits further attention are adolescent dancers as high levels of physical activity are associated with a higher risk to develop LBP.</p><p><strong>Objective: </strong>The aims of this cross-sectional study were (i) to investigate if delayed bone maturation and aberrant menstrual cycle were present in pre-professional female adolescent dancers and (ii) whether these ailments or other physical impairments could be related to LBP.</p><p><strong>Outcome measures: </strong>Bone maturation, menstrual cycle, hypermobility, scoliosis, and LBP.</p><p><strong>Methods: </strong>Eligible female dancers were recruited among dancers aged 14-18 yrs in a secondary school specialized in dance. One-way ANOVA was used for the variables to determine significant differences between groups and the repeated measures ANOVA test was used to determine the significant differences within groups. Significance level was determined at 0.05.</p><p><strong>Results: </strong>Fifteen out of 50 dancers reported a history of LBP. Significant differences were observed between calendar age and skeletal age in adolescent dancers (p<0.05). A considerable proportion of dancers showed delayed bone maturation (32%) or an aberrant menstrual cycle (53%), but this was not related to LBP (p>0.05). Scoliosis and generalized joint hypermobility were also not related to LBP (p>0.05). However, dancers with a history of LBP started dancing 2 years earlier (p<0.01), had significantly less hip internal rotation (p<0.05), and showed asymmetrical hip ROM (p<0.05).</p><p><strong>Conclusion: </strong>Based on the results of current study, delayed bone maturation and menstrual cycle disorders are common in pre-professional female dancers, but this was not related to LBP. Additionally, out of 27 variables, only starting dance activities under age 6 years old, showing hip asymmetry, and showing less internal hip rotation may be contributing factors for the development of LBP in pre-professional dancers.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 4","pages":"162-168"},"PeriodicalIF":0.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142786294","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":"Perceptions and Prevalence of Anxiolytic Medication Usage for Performance Enhancement Among Musicians.","authors":"Anne Kuwabara, Emily Miller Olson, Jeremy L Stanek","doi":"10.21091/mppa.2024.04018","DOIUrl":"https://doi.org/10.21091/mppa.2024.04018","url":null,"abstract":"<p><strong>Objective: </strong>While anecdotal reports of the use of performance-enhancing medications to curb anxiety in performing artists abound, there has been no research to date assessing the prevalence of usage and attitudes towards use amongst the artists themselves. The objective of this study was to evaluate the perceptions, acquisition, and use of potentially performance-enhancing medications (benzodiazepines, beta-blockers, and cannabinoids) in the performing artist community to clarify the use of these medications to improve patient counseling and patient safety.</p><p><strong>Design: </strong>Cross-sectional survey.</p><p><strong>Setting: </strong>Anonymous survey administered through an online platform (REDCap).</p><p><strong>Interventions: </strong>None.</p><p><strong>Participants: </strong>Musicians who are members of or perform in member groups of the American Federation of Musicians, National Association of Schools of Music, Regional Orchestra Players Association, and the International Conference of Symphony and Opera Musicians.</p><p><strong>Outcome measures: </strong>Prevalence of medication usage, subject perceptions of usage, and subject acquisition of medications.</p><p><strong>Results: </strong>A total of 311 subjects participated in the study. The mean age was 45.6 years, 52% male and 47% female. Forty percent are full-time ensemble musicians, with most being orchestral musicians in a stand-alone orchestra. Fifty-seven percent of subjects take beta-blockers when auditioning for a job, 51% take beta-blockers for performances, and 19% for solo situations. Fewer musicians take benzodiazepines and cannabis products to help with anxiety. Thirty-two percent, 22%, and 17% felt beta-blockers, benzodiazepines, and cannabis were performance-enhancing respectively, but less than 10% felt use was unethical.</p><p><strong>Conclusions: </strong>The results of this study demonstrate current use patterns of beta-blockers, benzodiazepines, and cannabis-containing products in the musician population. Beta-blockers appear to be well tolerated and most frequently used for performance anxiety.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 4","pages":"155-161"},"PeriodicalIF":0.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142786299","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":"Successful Use of Orthodontic Aligners in a Young Brass Instrumentalist: A Case Report.","authors":"Fawn N van der Weijden, Cees Jm Hazenberg, Paola L Carvajal Monroy","doi":"10.21091/mppa.2024.03016","DOIUrl":"https://doi.org/10.21091/mppa.2024.03016","url":null,"abstract":"<p><p>This case report is about a 15-year-old male trumpet player. The boy's teacher noticed that he contorted his face when playing high notes and thought that this could be due to his protruded upper front teeth; therefore, the teacher advised him to consult an orthodontist. The orthodontist diagnosed an Angle Class II Division 1 malocclusion with a disto-occlusion of 1/4 premolar width, enlarged overjet, palatal bite, spacing of the upper front teeth, and mild crowding of the lower front teeth. The young trumpet player was orthodontically treated with aligners. During the treatment, he did not experience any discomfort or interference with his embouchure. He experienced a marked improvement in his trumpet performance, particularly after his enlarged overjet was corrected. This treatment approach is promising for other brass players, although not all malocclusions can be easily treated with aligners.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 3","pages":"148-154"},"PeriodicalIF":0.9,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605237","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":"Relationship Between Sport Specialization and Quality of Life in Young Female Dancers.","authors":"Dai Sugimoto, Marina G Gearhart, Bridget J Quinn, Kelsey L Griffith, Andrea Stracciolini","doi":"10.21091/mppa.2024.03013","DOIUrl":"https://doi.org/10.21091/mppa.2024.03013","url":null,"abstract":"<p><strong>Objective: </strong>To compare quality of life (QoL) between specialized and non-specialized young female dancers.</p><p><strong>Methods: </strong>A cross-sectional survey design was used. Young female dancers between the ages of 8-17 years completed the validated pediatric QoL inventory (PedsQL 4.0) and answered the following sport specialization questions: 1) Do you solely perform dance?, 2) Did you quit other sports to focus on dance?, and 3) Do you participate in dance more than 8 months per year? Dancers who responded \"yes\" to all 3 questions were classified as specialized, while dancers who answered \"no\" to any of the 3 questions were classified as non-specialized. PedsQL 4.0 subscales (physical, psychosocial, emotional, social, and school) and total scores were compared between specialized and non-specialized dancers using the Mann-Whitney U test with p<0.05 considered statistically significant. As subgroup analyses, the comparisons were repeated with dancers under 12 years (≤12 years) and over 13 years (≥13 years) old.</p><p><strong>Results: </strong>A total of 72 young female dancers were included in the final analysis. The mean age was 12.5 (SD 2.5) years. No QoL differences were found in any subscale or total scores when comparing specialized and non-specialized dancers. However, differences were detected in subgroup analyses. In the dancers ≤12 years, psychosocial and total scores were higher in specialized dancers (57.9%, n=22) compared to non-specialized dancers (42.1%, n=16) (psychosocial p=0.045; total p=0.035). Conversely, in the dancers ≥13 years, psychosocial, emotional, and total scores were lower for specialized dancers (88.2%, n=30) compared to non-specialized dancers (11.8%, n=4) (psychosocial p=0.024; emotional p=0.049; total p=0.024).</p><p><strong>Conclusion: </strong>Our study found that QoL did not differ by sport specialization status when the entire sample was analyzed. However, in subgroup analysis, QoL was higher in specialized dancers in the ≤12 years than non-specialized dancers. Conversely, specialized dancers ≥13 years showed lower QoL than non-specialized dancers. Further studies are necessary to further investigate the difference in QoL when comparing younger to relatively older adolescent female dancers.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 3","pages":"119-125"},"PeriodicalIF":0.9,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605236","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":"Long-Term Effects of Three Different Exercise Training Modes on Cardiorespiratory Fitness of Female Flamenco Dancers.","authors":"Demet Tekin, Ani Agopyan, Irem Düzgün","doi":"10.21091/mppa.2024.03014","DOIUrl":"10.21091/mppa.2024.03014","url":null,"abstract":"<p><strong>Background: </strong>It is well established that high-intensity interval training (HIIT) is effective in enhancing athletes' performance and improving the health of recreational exercisers. However, there is a dearth of comprehensive recommendations regarding the integration of HIIT into the exercise routines of flamenco dancers. Therefore, this study aimed to evaluate how three different 10-week training programs--including traditional flamenco training (control group, CG) alone or combined with HIIT or muscular strength and endurance training (MSET)--impact the cardiovascular fitness (maximal oxygen consumption, VO2max) of female flamenco dancers, specifically focusing on the effectiveness of additional training methods.</p><p><strong>Methods: </strong>A group of 33 trained female flamenco dancers was randomly divided into three groups: HIIT (n=11), MSET (n=11), and a control group (CG, n=11). VO2max was assessed through breath-by-breath gas analysis during an incremental treadmill test. All participants, including the control group, engaged in uniform choreography sessions at moderate intensity (55-60% of reserve heart rate [HRR], 50 min/day, twice a week). In addition, the HIIT and MSET groups underwent supplementary training sessions twice a week (40 min/day) for 10 weeks, utilizing different techniques and intensities (HIIT: 80-90% of HRmax; MSET: 55-75% of HRmax).</p><p><strong>Results: </strong>A statistically significant 19.7% improvement in aerobic capacity (VO2max) was observed in the HIIT group (p≤0.05), with large effect sizes (ES) compared to MSET (p=0.011; ES=2.423) and CG (p=0.034; ES=1.664).</p><p><strong>Conclusion: </strong>These findings indicate that HIIT training, when integrated with dance lessons, enhances aerobic capacity more effectively compared to traditional dance training alone or traditional dance training supplemented with MSET. Therefore, integrating HIIT into dance training programs as supplementary training may be particularly effective in improving aerobic capacity for female flamenco dancers.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 3","pages":"126-136"},"PeriodicalIF":0.9,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605234","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 E-learning for Postural Education in Music Students (El-Poems): A Randomized Controlled Trial Among Iranian Adolescents.","authors":"Zahra Akbari-Chehrehbargh, Sedigheh Sadat Tavafian","doi":"10.21091/mppa.2024.03015","DOIUrl":"10.21091/mppa.2024.03015","url":null,"abstract":"<p><strong>Aims: </strong>Musculoskeletal (MSK) pain represents a major health problem facing music students worldwide. There is some evidence that posture education could be effective in reducing pain and disability among music students. The aim of this study was to assess the effective¬ness of E-learning for posture education in music students (El-Poems) on the presence of MSK pain, MSK pain intensity, as well as postural behavior.</p><p><strong>Methods: </strong>This was a matched-pair, two-arm parallel randomized controlled trial. Participants were music students (aged 12-18 yrs), randomized to intervention (n=134) and control (n=133) groups. The education program included four online sessions of the risks of incorrect posture and the necessary skill for correct postural behavior. A numeric rating scale (NRS) and the Nordic body map were used to evaluate the primary outcomes (MSK pain intensity, presence of MSK pain, and location). A secondary outcome (postural behavior) was assessed using the Rapid Entire Body Assessment checklist. Data were collected at two points, baseline and 6-month follow-up. ANOVA and Wilcoxon tests were performed to assess the time x group interaction effect.</p><p><strong>Results: </strong>A total of 267 music students participated this study. Of these, 150 (56.2%) reported at least one symptomatic region over the previous week. A significant reduction was found from baseline to 6-month follow-up in mean scores in the intervention group for MSK pain prevalence (from 55.2% to 43.3%, Z=-2.71, P=0.004, etap2=0.07), MSK pain intensity (from 2.21±2.51 to 1.94±2.47, F263=32.27, P<0.001, etap2 = 0.11), and postural behavior (from 6.99±2.97 to 6.65±2.72, F263=27.35, P<0.001, etap2=0.09).</p><p><strong>Conclusion: </strong>The results demonstrated that the E-learning postural education program was associated with a decrease in the prevalence of MSK pain, a reduction in pain intensity, and improved postural behavior. Iranian Registry of Clinical Trials: reg. no. IRCT20180528039885N2, Nov-09-2021.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 3","pages":"137-147"},"PeriodicalIF":0.9,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605197","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":"Incidence, Prevalence, and Characteristics of Injuries in Pole Dancers: A Systematic Review.","authors":"Caitlin Scott, Quentin Scott, Simone Muscat","doi":"10.21091/mppa.2024.2012","DOIUrl":"10.21091/mppa.2024.2012","url":null,"abstract":"<p><strong>Objectives: </strong>Pole dancing is an extreme form of performance physical activity, combining considerable feats of muscular strength, flexibility, dancing and acrobatics on a vertical metal apparatus. Despite rapid growth in the artform, many pole dancers continue to participate without fulfilling physical requirements to withstand the forces and physicality required. The aim of this systematic review was to determine the incidence, prevalence and characteristics of injuries sustained by pole dancing participants reported in published studies.</p><p><strong>Methods: </strong>Five databases were comprehensively searched in February 2023. Authors independently screened titles and abstracts, with full copies of eligible studies reviewed using specific inclusion/exclusion criteria. Studies were included if they referenced pole dancing, were in English language and Level I-III-3 in accordance with the Australian National Health and Medical Research Council, with case reports considered if included 10 or more participants. The National Institute of Health quality assessment tool for observational cohort and cross-sectional studies was used to review the quality of reporting of selected studies.</p><p><strong>Results: </strong>Eleven articles were retrieved based on searches, with five studies meeting full inclusion/exclusion criteria, published between 2020-2022. In total 787 study participants were identified, with 623 sustaining a total of 1,803 pole dancing injuries. Data from all studies in injury profiles reported 42.4% of injuries sustained to the upper limb, 44.8% lower limb, 10.5% trunk, 0.02% associated with the head and neck, and several injuries affecting multiple regions. Acute injuries comprised 51.6% of reported injuries compared to 48.4% chronic. Injury characteristics were varied due to inconsistencies in reporting across studies.</p><p><strong>Conclusions: </strong>This systematic review highlights a paucity of knowledge regarding injuries in pole dancing, perhaps expected with a relatively young sport. Improvement in reporting is required to aid in identification of injuries and opportunities for development of injury risk reduction strategies. PROSPERO Registration no. CRD42023401012.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 2","pages":"108-118"},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141175512","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":"Popular Musician Occupational Stress and Psychological Ill Health: An Exploratory Factor Analysis.","authors":"Ben King, Jessica Koenig, Lloyd Berg","doi":"10.21091/mppa.2024.2010","DOIUrl":"10.21091/mppa.2024.2010","url":null,"abstract":"<p><strong>Objective: </strong>Popular musicians are exposed to many occupational stressors, including unpredictable work schedules, touring and economic precarity, that have been associated in prior studies with psychological ill health. This study sought to identify occupational stressors most strongly associated with depression, anxiety, and alcohol misuse in popular musicians.</p><p><strong>Methods: </strong>An online survey was completed by 317 popular musicians that included the Musician Occupational Stress Scale (MOSS), a validated measure of occupational stress in popular musicians. An exploratory principle-factor analysis (EFA) investigated the dimensions of response pat¬terns in the items comprising the MOSS.</p><p><strong>Results: </strong>Four factors were identified that predicted 50% of musician occupational stress: Work Insecurity Stress, Tour Stress, Performance Stress, and Professional Relationship Stress. In addition to financial distress, each factor was significantly associated with depression and anxiety and Tour Stress also was associated with alcohol misuse. After adjusting for all other factors and financial distress, only Work Insecurity Stress remained associated with depression (odds ratio [OR]= 5.42; 95% confidence interval [CI] = 3.23-9.09) and anxiety (OR=5.95; 95% CI = 3.51-10.11). Tour Stress became inversely associated with depression (OR= 0.59; 95% CI = 0.40-0.89) and anxiety (OR=0.60; 95% CI = 0.40-0.89). After adjustment, alcohol misuse was associated with Professional Relationship Stress (OR=1.66; 95% CI = 1.04-2.65) but inversely correlated with Performance Stress (OR=0.60; 95% CI = 0.40-0.91).</p><p><strong>Conclusions: </strong>The four-factor model was shown to reliably simplify driving associations of occupational stressors that negatively impact psychological functioning in popular musicians. Dissemination of these findings could have practical implications in developing effective outreach messaging to promote psychological resilience and guide psychotherapeutic intervention strategies for this high-risk occupational group.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 2","pages":"72-81"},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141175524","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":"Selenoprotein synthesis is not induced by hepatotoxic drugs.","authors":"Sumangala P Shetty, Dongming He, Paul R Copeland","doi":"10.1101/2023.05.12.540527","DOIUrl":"10.1101/2023.05.12.540527","url":null,"abstract":"<p><strong>Background and aims: </strong>Many of the proteins that contain the amino acid selenocysteine are required for optimal defense against cellular stress. As such, one might expect selenoprotein synthesis to persist or be induced upon cellular insult. Because selenocysteine is incorporated by a complex post-transcriptional mechanism, monitoring the transcription of selenoprotein genes is not adequate to understand the regulation of selenoprotein synthesis. We aimed to determine whether selenoprotein synthesis is regulated by the induction of hepatotoxic stress.</p><p><strong>Methods: </strong>We used hepatotropic clinically relevant drugs to evaluate the regulation of selenoprotein synthesis in human hepatocarcinoma cells.</p><p><strong>Results: </strong>We found that two drugs, benzbromarone and sorafenib, caused significant inhibition of selenoprotein synthesis. However, the loss of selenoprotein expression was not specific as total protein synthesis was similarly down-regulated only by benzbromarone and sorafenib.</p><p><strong>Conclusions: </strong>These results allow us to conclude that these hepatotoxins do not induce or preserve selenoprotein synthesis as a protective mechanism.</p><p><strong>Highlights: </strong>The treatment of liver cells with hepatotoxic and hepatotropic compounds does not result in increased synthesis of selenoproteins.Compounds that induced the canonical oxidative stress response that features NRF2 activation eliminated selenoprotein synthesis.The downregulation of selenoproteins was accompanied by general inhibition of protein synthesis.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"27 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11142112/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89904648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laterality in Body Coordination of Professional and Amateur Ballet Dancers While Performing a Single Pirouette with Pointe Shoes.","authors":"Yurina Tsubaki, Yui Kawano, Cheng-Feng Lin, Mayumi Kuno-Mizumura","doi":"10.21091/mppa.2024.1002","DOIUrl":"10.21091/mppa.2024.1002","url":null,"abstract":"<p><strong>Objective: </strong>Imbalances in muscle strength coordination owing to lateral preference may be a risk factor for injury in dancers. Postural control is essential for the basic turn in ballet (pirouette), owing to its lateral asymmetry. Since dance with pointe shoes demands greater range of motion, muscle strength, and balance control compared to dancing with flat shoes, pointe shoes may further add to the risk and cause an imbalance between the preferred and non-preferred legs during pirouette. In this study, we examined lateral differences in professional and experienced amateur ballet dancers during single pirouettes with pointe shoes to understand the multiple elements involved in lateral balance control in pirouettes.</p><p><strong>Methods: </strong>Eight female professionals and seven female amateur ballet dancers performed single pirouettes in pointe shoes on both the preferred and non-preferred sides. To understand the body coordination laterality in single pirouettes, statistical parametric mapping was performed for the trunk, hip, knee, ankle angle, and center of mass-center of pressure inclination angle timeframe data during the pirouette in three phases: turn with double-leg (Phase 1), single-leg (Phase 2), and finish turning with a single-leg (Phase 3). In addition, the hop-up time was calculated as the percentage when the foot is not in contact with the ground in Phases 2 and 3.</p><p><strong>Results: </strong>There were no lateral differences in trunk and lower limb angles in either group. Professional dancers showed slightly more inclination towards the stance leg during left rotation at the beginning of the movement (Phase 1) with longer hop-up time in Phase 2, whereas amateur dancers tended to tilt forward during the left turn (Phases 1 and 2) with longer hop-up time in Phase 3.</p><p><strong>Conclusion: </strong>It is notable that the COP-COM inclination angle was adjusted by hop-up and it caused the lateral differences in both professional and amateur dancers during a single pirouette with pointe shoes. This study highlights elements to consider in laterality when monitoring pirouette performance with pointe shoes.</p>","PeriodicalId":18336,"journal":{"name":"Medical problems of performing artists","volume":"39 1","pages":"8-17"},"PeriodicalIF":0.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139983238","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}