Journal of Dance Medicine & Science最新文献

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Sleep Characteristics in Dance Students Related to Psychological Inflexibility. 舞蹈专业学生的睡眠特征与心理弹性的关系。
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-03-01 Epub Date: 2024-07-27 DOI: 10.1177/1089313X241263651
Félix Arbinaga, María-Isabel Mendoza-Sierra, Gabriela Fernández-Acosta
{"title":"Sleep Characteristics in Dance Students Related to Psychological Inflexibility.","authors":"Félix Arbinaga, María-Isabel Mendoza-Sierra, Gabriela Fernández-Acosta","doi":"10.1177/1089313X241263651","DOIUrl":"10.1177/1089313X241263651","url":null,"abstract":"<p><p><b>Introduction:</b> Dance, as a performance activity, is associated with various problems. Among these challenges, sleep disturbances are notably prevalent. <b>Aims:</b> This study aimed to explore the potential relationship between sleep characteristics-specifically chronotype and subjective sleep quality- and psychological inflexibility in dance students. <b>Methods:</b> This research adopted a cross-sectional design using non-probabilistic sampling. The data were collected in paper format by visiting public conservatories and private academies, and online. One hundred fourteen dance students, with a mean age of 23.87 years, participated in the study. Assessment tools included the Acceptance and Action Questionnaire-II, Pittsburgh Sleep Quality Index, and the Composite Scale of Morningness. <b>Results:</b> The results revealed that 80.7% of all students reported poor sleep quality, compared to 19.3% who reported good sleep quality. Differences emerged in both subjective sleep quality (<i>F<sub>(2, 113)</sub></i> = 4.825, <i>P</i> = .010) and chronotype (<i>F<sub>(2, 113)</sub></i> = 6.172, <i>P</i> = .003) when students were grouped according to low, medium, or high levels of psychological inflexibility. Those with low inflexibility, as opposed to those with high inflexibility, report better sleep quality, with no differences observed between medium and high inflexibility groups. Students with high-medium levels of psychological inflexibility showed a higher risk (<i>OR</i> = 6.373 times higher) of experiencing poor sleep quality compared to those with low psychological inflexibility. In terms of chronotype, the low inflexibility group is inclined to be more of a morning type than the medium and high inflexibility groups, with no differences between the latter 2 groups. Students categorized as having low inflexibility tend to have a longer history of dancing under the guidance of a teacher and dedicate more hours and days per week to rehearsal. <b>Conclusion:</b> Conservatories can become \"healthy spaces.\" In this regard, sleep hygiene programs and Acceptance and Commitment Therapy interventions can provide guidance to professionals working with dancers in professional companies and conservatories.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"3-12"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141767629","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}
引用次数: 0
The Development and Reliability of an Updated Dance-Specific Star Excursion Balance Test Protocol. 最新舞蹈专用星空激荡平衡测试程序的开发与可靠性。
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-03-01 Epub Date: 2024-07-28 DOI: 10.1177/1089313X241265237
Samantha Beckman, James Brouner
{"title":"The Development and Reliability of an Updated Dance-Specific Star Excursion Balance Test Protocol.","authors":"Samantha Beckman, James Brouner","doi":"10.1177/1089313X241265237","DOIUrl":"10.1177/1089313X241265237","url":null,"abstract":"<p><p><b>Background:</b> While the previous research has made crucial developments in a dance-specific version of the SEBT, current modifications to the SEBT have not conclusively produced a valid dance-specific dynamic balance test. <b>Purpose:</b> The aim of this paper was to utilize the most practical dance-specific variations from previous research and incorporate them into a reliable test to be considered for future screenings for dancers. <b>Methods:</b> Twenty-one female dancers voluntarily took part in the research (age: 20.86 ± 3.68 years). This protocol consists of 3 stages, each increasing in difficulty; stage one: dsSEBT Average Tempo, stage two: dsSEBT Block, and stage three: a combination of stage 1 and stage 2, the dsSEBT Average Tempo on Block. Reach distance (% of limb length), error scores, and average time to complete each stage were recorded. A stage completion criteria was developed to move from one stage to the next wherein certain reach distance and error score standards needed to be met. <b>Results:</b> Between previous research using the same participants and the current study, each reach direction exhibits a statistically significant correlation (<i>P</i> < .05) with good to excellent ICC values ranging from .750 to .918, suggesting that test-retest reliability is high. Overall, 90.48% of participants succeeded in passing stage one, 19.05% of total participants passed stage two, and only 4.76% of the 21 participants passed all 3 stages with statistically significant differences detected for reach distance and incomplete trials between stages (<i>P</i> < .05). <b>Conclusion:</b> This data suggests that the test is challenging enough to show dancers weaknesses and push the limits of their balance capabilities. With a clear increase in difficulty from stage to stage, the test adds layers of demanding tasks designed to test the dancer proprioceptively.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"22-31"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141789359","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}
引用次数: 0
Validated Tools Used to Assess Musculoskeletal Injuries in Dancers: A Systematic Review. 用于评估舞蹈演员肌肉骨骼损伤的验证工具:系统综述。
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-03-01 Epub Date: 2024-08-21 DOI: 10.1177/1089313X241272137
Isabela Panosso, Danrlei Senger, Marcela Dos Santos Delabary, Manuela Angioi, Aline Nogueira Haas
{"title":"Validated Tools Used to Assess Musculoskeletal Injuries in Dancers: A Systematic Review.","authors":"Isabela Panosso, Danrlei Senger, Marcela Dos Santos Delabary, Manuela Angioi, Aline Nogueira Haas","doi":"10.1177/1089313X241272137","DOIUrl":"10.1177/1089313X241272137","url":null,"abstract":"<p><p><b>Introduction:</b> Dance is a physically demanding art form that often results in musculoskeletal injuries. To effectively treat these injuries, standardized and reliable assessment tools designed to the dancer's needs are required. Thus, the aim of this review is to identify studies that have employed validated tools to assess musculoskeletal injuries in ballet, modern, and contemporary dancers, focusing on describing the content and psychometric quality of the tools used. <b>Methods:</b> This systematic review is registered at PROSPERO (CRD42022306755). PubMed, Cochrane, LILACS, Web of Science and SPORTDiscus databases were searched by two independent reviewers. Articles assessing musculoskeletal injuries with validated tools in ballet, modern and/or contemporary dancers and written in English, Portuguese, or Spanish were included. Non-peer reviewed articles, books, conference abstracts, thesis/review articles, or case design studies were excluded. The original validation studies were compiled when necessary. Two independent reviewers conducted a standardized data extraction and evaluated the methodological quality using an adapted Downs and Black checklist. <b>Results:</b> From the 3933 studies screened, 172 were read to verify if they met the inclusion criteria, resulting in 37 studies included accounting for 16 unique validated tools. Two were imaging exams, one was an injury classification system, and 13 were self-reported injury questionnaires. Only four injury assessment tools were validated for dancers, emphasizing the need for further validation studies for the dance population. Most of the articles (57%) achieved high-quality methodological scores and the remaining (43%) reported medium-quality scores. <b>Conclusions:</b> Valid, reliable, and specific tools to assess dance injuries are lacking in general. For enhanced methodological rigor in future studies, the incorporation of validated tools is recommended to improve methodological quality and facilitate cross-study comparisons. Researchers may consider conducting validation studies, involving processes such as translation into another language, validation of modifications to the original tool, or reporting reliability within the article itself.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"43-60"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142019102","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}
引用次数: 0
The Effects of 8-week Dance and Tai Chi Randomized Controlled Trial on Balance, Wellbeing and Moods Among Healthy Adults Aged 18 to 60: A Study Protocol.
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-02-28 DOI: 10.1177/1089313X251323669
Jie Lu, Jake K Ngo, Tracey J Devonport, Matthew A Wyon
{"title":"The Effects of 8-week Dance and Tai Chi Randomized Controlled Trial on Balance, Wellbeing and Moods Among Healthy Adults Aged 18 to 60: A Study Protocol.","authors":"Jie Lu, Jake K Ngo, Tracey J Devonport, Matthew A Wyon","doi":"10.1177/1089313X251323669","DOIUrl":"https://doi.org/10.1177/1089313X251323669","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of the proposed randomized controlled study is to compare the effects and efficacy of a dance, a Tai Chi and a waiting list control group intervention over an 8-week period on physical functions and mental benefits among non-clinical adults aged between 18 and 60.</p><p><strong>Method: </strong>A double-blind, randomized controlled trial will be adopted to evaluate the effects and efficacy of an 8-week dance intervention compared with Tai Chi and a control group on physical and mental benefits. Participants will be randomly assigned to 3 groups, dance, Tai Chi, and Control group, using stratified random sampling based on sex. Isometric Mid-thigh Pull (IMTP), Y-Balance test (YBT), Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS), and The Brunel Mood Scale (BRUMS) are utilized for collecting physical and mental data. All measurements will be conducted by research assistants blinded to participants' group allocation and analysis will be carried out by statistician blinded to the group and test parameters.</p><p><strong>Expected result: </strong>Mental wellbeing parameters are predicted to be increasing during the learning phase and the physical parameters are predicted to have an improvement in the practising phase.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251323669"},"PeriodicalIF":1.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143524617","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}
引用次数: 0
Free Dance Proves to be Effective in Depressive Symptoms, Anxiety and Stress in Women Undergoing Breast Cancer Surgery: A Randomized Clinical Trial.
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-02-26 DOI: 10.1177/1089313X251319570
Juliana da Silveira, Leonessa Boing, Jéssica Amaro Moratelli, Patrícia Severo Dos Santos Saraiva, Anke Bergmann, Magnus Benetti, Adriana Coutinho de Azevedo Guimarães
{"title":"Free Dance Proves to be Effective in Depressive Symptoms, Anxiety and Stress in Women Undergoing Breast Cancer Surgery: A Randomized Clinical Trial.","authors":"Juliana da Silveira, Leonessa Boing, Jéssica Amaro Moratelli, Patrícia Severo Dos Santos Saraiva, Anke Bergmann, Magnus Benetti, Adriana Coutinho de Azevedo Guimarães","doi":"10.1177/1089313X251319570","DOIUrl":"https://doi.org/10.1177/1089313X251319570","url":null,"abstract":"<p><p><b>Objective:</b> To analyze the effects of 12 weeks of free dancing compared to the control group and the reference group without breast cancer, on depressive symptoms, anxiety and stress in women after breast cancer surgery and to verify the association between the variables. <b>Methods:</b> Randomized clinical trial, comprising women after breast cancer surgery (57.7 ± 9.0 years) and women without breast cancer (51.5 ± 10.8 years), divided into 3 groups; (a) received the free dance intervention (n = 11); (b) control group with breast cancer (n = 11) maintained their routine activities, and (c) control group without breast cancer (n = 12) who were matched by age and could not perform physical exercise during the study period. The dance intervention lasted 12 weeks, with 60-minute sessions, held twice a week. The evaluated outcomes were: depressive symptoms (Beck Depression Inventory), anxiety (Beck Anxiety Inventory), and stress (Perceived Stress Scale). <b>Results:</b> There was statistically significant improvement in the intragroup for free dance in depressive symptoms (<i>P</i> = .025), anxiety (<i>P</i> = .009) and stress (<i>P</i> = .050). No significant intragroup differences were found in the control group I and control group II, as well as intergroup differences. In the association of variables, the healthy reference group worsened in the simple analysis, for anxiety (<i>P</i> ≤ .001) and stress (<i>P</i> = .040), and worsened in the adjusted analysis, also for anxiety (<i>P</i> ≤ .001) and stress (<i>P</i> = .025). <b>Conclusion:</b> Free dancing had positive effects on depressive symptoms, anxiety and stress in women after breast cancer surgery. After verifying the association of the variables, it was noticed a worsening of the variables in the CGII. <b>Clinical registry:</b> Brazilian Registry of Clinical Trials (ReBEC) (no. 0RBR-772ktp).</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251319570"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143516736","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}
引用次数: 0
"Optimizing Achilles Tendinopathy Education: Insights and Recommendations for Effective Prevention Program".
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-02-24 DOI: 10.1177/1089313X251317636
Sakshi Sadhu, Agnel Prinson, Soubhagyabati Prusty
{"title":"\"Optimizing Achilles Tendinopathy Education: Insights and Recommendations for Effective Prevention Program\".","authors":"Sakshi Sadhu, Agnel Prinson, Soubhagyabati Prusty","doi":"10.1177/1089313X251317636","DOIUrl":"https://doi.org/10.1177/1089313X251317636","url":null,"abstract":"","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251317636"},"PeriodicalIF":1.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143494050","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}
引用次数: 0
Comparison of Nonlinear Dynamics of Heart Rate Variability Between Conventional Cardiac Rehabilitation and Dance-Based Therapy: A Non-Randomized Crossover Clinical Trial.
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-02-19 DOI: 10.1177/1089313X251316672
João Pedro Lucas Neves Silva, Júlio César de Ávila Soares, Maria Júlia Lopez Laurino, Felipe Ribeiro, Natacha de Lima Gervazoni, Bruna Izadora Spinardi Alves, Eduarda Carvalho Novaes Moreira, Luiz Carlos Marques Vanderlei, Roselene Modolo Regueiro Lorençoni
{"title":"Comparison of Nonlinear Dynamics of Heart Rate Variability Between Conventional Cardiac Rehabilitation and Dance-Based Therapy: A Non-Randomized Crossover Clinical Trial.","authors":"João Pedro Lucas Neves Silva, Júlio César de Ávila Soares, Maria Júlia Lopez Laurino, Felipe Ribeiro, Natacha de Lima Gervazoni, Bruna Izadora Spinardi Alves, Eduarda Carvalho Novaes Moreira, Luiz Carlos Marques Vanderlei, Roselene Modolo Regueiro Lorençoni","doi":"10.1177/1089313X251316672","DOIUrl":"https://doi.org/10.1177/1089313X251316672","url":null,"abstract":"<p><p><b>Introduction:</b> Dance has been suggested as an alternative therapeutic modality in cardiac rehabilitation programs (CRP). Therefore, evaluating the physiological responses of the body during dance is necessary to provide information that will allows it to be practiced a safe and effective way. In this context, the objective of the current study was to evaluate and compare the cardiac autonomic modulation (CAM) of women with cardiovascular risk factors (CRF) during and after a dance-based cardiac rehabilitation session and a conventional cardiac rehabilitation session. <b>Methods:</b> In total, 19 women, with at least 1 CRF, participated in this non-randomized crossover clinical trial, consisting of 4 steps: I. Familiarization with the dance protocol (DP); II. DP session; III. Familiarization with the conventional protocol (CP); IV. CP session. The CAM was evaluated using heart rate variability, considering nonlinear methods: recurrence plot, debugged trend fluctuations, and symbolic analysis. For data evaluation, 2-way analysis of variance for repeated measures was used, <i>P</i> < .05. <b>Results:</b> During exercise, an effect of protocol was observed for most of indices. In the DP, higher values were recorded for DET, Alpha-1, and 0 V% indices, and lower values for 1 V% and 2 ULV% indices and for entropy measurements. During recovery, no differences were observed between protocols. Effects of the exercises were observed in the comparisons between moments for all indices, however, a similar pattern of recovery was found between DP and CP. <b>Conclusions:</b> Comparisons of the dance and conventional protocols revealed that CAM was similar in both approaches, while greater alterations in nonlinear dynamics were observed during the DP exercise. However, these alterations were not able to modify the recovery of the volunteers. <b>Clinical Trial Registration:</b> The study was previously registered on the clinicaltrials.gov platform under registration number: NCT04967235. https://clinicaltrials.gov/study/NCT04967235?locStr=Brazil&country=Brazil&cond=Cardiovascular%20risk%20factors&term=Heart%20Rate%20Variability&intr=Dance%20therapy&rank=1.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251316672"},"PeriodicalIF":1.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143450667","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}
引用次数: 0
Dance-specific Aerobic Fitness Test (DAFT) Heart Rate Variables are not Associated with Lower-Extremity Injuries in Contemporary Dance Students.
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-02-19 DOI: 10.1177/1089313X251320698
Annemiek Tiemens, Larissa A Plaatsman, Rogier M van Rijn, Bart W Koes, Janine H Stubbe
{"title":"Dance-specific Aerobic Fitness Test (DAFT) Heart Rate Variables are not Associated with Lower-Extremity Injuries in Contemporary Dance Students.","authors":"Annemiek Tiemens, Larissa A Plaatsman, Rogier M van Rijn, Bart W Koes, Janine H Stubbe","doi":"10.1177/1089313X251320698","DOIUrl":"https://doi.org/10.1177/1089313X251320698","url":null,"abstract":"<p><strong>Introduction: </strong>The purpose of the study was to examine if dance-specific aerobic fitness test (DAFT) heart rate variables were associated to lower-extremity injuries in contemporary dance students.</p><p><strong>Methods: </strong>A total of 235 first-year contemporary dance students (18.6 ± 1.2 years) were prospectively followed over the first 4 months of their academic year. Peak heart rate (HR<sub>peak</sub>) in the final stage of the DAFT and heart rate recovery (HRR) 1 minute after DAFT completion were measured. Lower-extremity injuries were registered using a self-reported monthly questionnaire including the Oslo Sports Trauma Research Centre Questionnaire on Health Problems (OSTRC-H). Three injury definitions were used (all-complaint injury, substantial injury, and time-loss injury). Associations between DAFT HR<sub>peak</sub>, HRR and lower-extremity injury prevalence and severity were examined with regression analyses.</p><p><strong>Results: </strong>Lower-extremity injury prevalence was 36.2% (n = 85), 13.6% (n = 32), and 22.6% (n = 53) for all-complaint, substantial and time-loss injuries, respectively. There were no significant associations between HR<sub>peak</sub> or HRR and injury prevalence using either of the 3 injury definitions. There were no significant associations between DAFT HR<sub>peak</sub> or HRR and injury severity (days off due to injury or OSTRC-H severity score). Multivariate analyses showed significant associations between age and substantial injuries (OR 1.807; 95% CI 1.242-2.630; <i>P</i> < .01) and between age and time-loss injuries (OR 1.441; 95% CI 1.074-1.933; <i>P</i> < .05).</p><p><strong>Conclusion: </strong>Aerobic fitness measured with the DAFT was not associated with lower-extremity injury risk or injury severity. Higher age was associated with substantial and time-loss lower-extremity injuries.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251320698"},"PeriodicalIF":1.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143450736","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}
引用次数: 0
Pilot Study of Bone Turnover Biomarkers, Diet, and Exercise in Elite Female Ballet Dancers.
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-02-19 DOI: 10.1177/1089313X251315812
Francesca Bladt, Yurgita Ruslanovna Varaeva, Greg John Retter, Alan Courtney, Paul Adrian Hunter Holloway, Gary Frost, Isabel Garcia-Perez, Jacqueline Birtwisle, Ian Frederick Ronald Beasley, Alison Hazel McGregor, Richard Leslie Abel
{"title":"Pilot Study of Bone Turnover Biomarkers, Diet, and Exercise in Elite Female Ballet Dancers.","authors":"Francesca Bladt, Yurgita Ruslanovna Varaeva, Greg John Retter, Alan Courtney, Paul Adrian Hunter Holloway, Gary Frost, Isabel Garcia-Perez, Jacqueline Birtwisle, Ian Frederick Ronald Beasley, Alison Hazel McGregor, Richard Leslie Abel","doi":"10.1177/1089313X251315812","DOIUrl":"https://doi.org/10.1177/1089313X251315812","url":null,"abstract":"<p><p><b>Introduction:</b> Elite ballet is one of the most demanding physical activities for the skeleton, making dancers susceptible to bone stress injuries. This pilot study compared bone remodeling in professional female ballet dancers from the Royal Ballet Company with controls from Imperial College London. <b>Methods:</b> The study included dancers (n = 5, median age 29 ± 16 years) and controls (n = 6, median age 24 ± 8.5 years). The main outcome measure was bone turnover, assessed by measuring the ratio of resorption (NTX) and formation (P1NP) markers in urine and serum. Estrogen metabolism was evaluated through 2OH/16OH metabolite ratios. Both markers were measured using ELISA kits. Diet was tracked using 72-hour diaries, and weekly exercise hours were recorded through 2-week diaries and cross referenced with training logs. <b>Results:</b> Results showed significantly higher bone resorption to formation ratio (NTX/P1NP) in dancers versus controls (<i>P</i> < .050), and elevated estrogen metabolite ratios (2OH/16OH) (<i>P</i> < .010). These findings occurred despite similar dietary profiles between groups including fat (<i>P</i> = .874) carbohydrate (<i>P</i> = .501) and protein (<i>P</i> = .099). Dancers showed significantly higher weekly exercise hours (46.50 ± 38.75 vs 14.75 ± 11.75 hours/week, <i>P</i> < .001) and lower BMI (18.36 ± 1.35 vs 20.77 ± 3.66, <i>P</i> = .020). <b>Conclusions:</b> The pilot data suggest elite ballet dancers may exhibit an imbalance in bone remodeling with high resorption and low formation relative to controls. This imbalance in bone turnover markers could serve as a screening tool for identifying dancers at increased risk of bone stress injuries. The NTX/P1NP ratio could potentially offer a low-cost, non-invasive approach to identify at-risk dancers early and implement preventative measures. Further research and longitudinal trials are needed to test whether these markers can predict bone stress injury risk.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251315812"},"PeriodicalIF":1.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143450746","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}
引用次数: 0
Increased Leap Performance With No Change to Knee-Drop Landing Kinetics, Following a Verbal Cueing Intervention.
IF 1.1
Journal of Dance Medicine & Science Pub Date : 2025-02-13 DOI: 10.1177/1089313X251318544
Laura Flanagan, Edel Quin, Neal Smith
{"title":"Increased Leap Performance With No Change to Knee-Drop Landing Kinetics, Following a Verbal Cueing Intervention.","authors":"Laura Flanagan, Edel Quin, Neal Smith","doi":"10.1177/1089313X251318544","DOIUrl":"https://doi.org/10.1177/1089313X251318544","url":null,"abstract":"<p><p><b>Introduction:</b> Knee-drop landings following a dance leap are often used in contemporary dance choreography, but there is limited research into the biomechanical demands of these types of landing. This study aimed to investigate the effects of a verbal cueing intervention on the performance and kinetics of a common knee-drop landing in contemporary trained dance students. <b>Method:</b> Pre-vocational dance students participated in this study (n = 8). A quasi-experimental research design was followed to collect kinematic and kinetic data using 3D motion capture and force plates following the take-off and during a knee-drop landing of a contemporary dance style leap pre and post a verbal cueing intervention. Performance variables analysed were jump height and flight time, while kinetic variables included vertical ground reaction forces (vGRFs) and loading rates. <b>Results:</b> A statistically significant increase in jump height and flight time was found post intervention; There was no significant difference between pre and post intervention for peak vGRFs at foot or knee impact or loading rate of the whole landing phase. <b>Conclusion:</b> The verbal cueing intervention was successful in increasing flight time and jump height, indicating optimised performance. The lack of significant difference in peak vGRFs and loading rate in the landing phase implies that the intervention did not have a detrimental effect on musculoskeletal loading. These findings demonstrate the positive influence of a verbal cue which focusses on increasing flight time and opposing the landing for enhancing the execution of a dance leap without negatively affecting the forces being experienced in the knee-drop landing that followed. However, it should be noted that the small sample size and lack of a control group in this study may limit the reliability of findings and mean that the generalizability of these findings should interpreted with caution.</p>","PeriodicalId":46421,"journal":{"name":"Journal of Dance Medicine & Science","volume":" ","pages":"1089313X251318544"},"PeriodicalIF":1.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143410727","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}
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