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https://www.readbyqxmd.com/read/28783444/hip-and-groin-injuries-in-dancers-a-systematic-review
#1
Natasha Trentacosta, Dai Sugimoto, Lyle J Micheli
CONTEXT: Injury data on hip and groin injuries vary, and these injuries are often misrepresented or overlooked for more commonly seen injuries, such as those to the foot and ankle. OBJECTIVE: To provide a systematic review of the injury rates of hip and groin pathology in dancers and look to establish a better understanding of the occurrence of hip and groin injuries in the dancer population. DATA SOURCES: A literature search was performed using PubMed and CINAHL databases for articles published between 2000 and 2016...
August 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28730921/kinematic-repeatability-of-a-multi-segment-foot-model-for-dance
#2
Sarah L Carter, Nahoko Sato, Luke S Hopper
The purpose of this study was to determine the intra and inter-assessor repeatability of a modified Rizzoli Foot Model for analysing the foot kinematics of ballet dancers. Six university-level ballet dancers performed the movements; parallel stance, turnout plié, turnout stance, turnout rise and flex-point-flex. The three-dimensional (3D) position of individual reflective markers and marker triads was used to model the movement of the dancers' tibia, entire foot, hindfoot, midfoot, forefoot and hallux. Intra and inter-assessor reliability demonstrated excellent (ICC ≥ 0...
July 21, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28619310/dance-for-parkinson-s-the-effects-on-whole-body-co-ordination-during-turning-around
#3
RANDOMIZED CONTROLLED TRIAL
Sophia Hulbert, Ann Ashburn, Lisa Roberts, Geert Verheyden
OBJECTIVE: To investigate the effects of ballroom and Latin American dancing classes on turning in people with Parkinson's. DESIGN: This study employed a randomised, controlled, experimental design. SETTING: Dance classes were performed in a community dance centre in Southern England and all assessments took place a gait laboratory. PARTICIPANTS: Twenty-seven people with mild-moderate Parkinson's participated. INTERVENTION: Participants were randomly allocated to receive either 20, 1-h dancing classes over 10 weeks (n=15), or a 'usual care' control group (n=12)...
June 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28599018/biopsychosocial-factors-associated-with-foot-and-ankle-pain-and-injury-in-irish-dance-a-prospective-study
#4
Roisin Cahalan, Helen Purtill, Kieran O'Sullivan
BACKGROUND: Foot and ankle pain/injury (FAPI) is the most common musculoskeletal problem suffered in Irish dancing. A prospective examination of risk factors for FAPI in this cohort has never been performed. STUDY DESIGN: Prospective study over 1-year. METHODS: 85 elite adult Irish dancers were screened at baseline for biopsychosocial factors and followed up prospectively each month for 1 year to evaluate FAPI rates and potential risk factors...
June 2017: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/28530460/unravelling-motor-learning-processes-in-theatre-performers
#5
Emmanuel Jacobs, Ann Hallemans, Jan Gielen, Luc Van den Dries, Annouk Van Moorsel, Jonas Rutgeerts, Nathalie Roussel
Theatre performers, more than common actors, experience high physical loadings. This study aimed at analysing the motor behaviour ofnovice performers (dancers/actors who were introduced to the acting method of Jan Fabre), by investigating the kinematics of a physical acting exercises in a prospective study. Two measurement sessions were organised, before and after the novice performers (n = 13) took part in seven workshops. Total body kinematics were registered using a 3D motion capture system. By using a Principal Component Analysis (PCA), six factors were disseminated out of 30 kinematic parameters: Pelvic Motion, Speed of Progression, Lower Limb Position, Foot Motion, Lower Limb Motion and Trunk Position...
May 22, 2017: Motor Control
https://www.readbyqxmd.com/read/28338396/should-ballet-dancers-vary-postures-and-under-foot-surfaces-when-practicing-postural-balance
#6
Nili Steinberg, Gordon Waddington, Roger Adams, Janet Karin, Oren Tirosh
BACKGROUND: Postural balance (PB) is an important component skill for professional dancers. However, the effects of different types of postures and different underfoot surfaces on PB have not been adequately addressed. PURPOSE: The main aim of the present study was to investigate the effect of different conditions of footwear, surfaces, and standing positions on static and dynamic PB ability of young ballet dancers. METHOD: Thirty-six male and female young professional ballet dancers (aged 14-19) completed static and dynamic balance testing, measured by head and lumbar accelerometers, while standing on one leg in the turn-out position, under six different conditions: 1...
March 24, 2017: Motor Control
https://www.readbyqxmd.com/read/28220914/the-association-between-body-built-and-injury-occurrence-in-pre-professional-ballet-dancers-separated-analysis-for-the-injured-body-locations
#7
Petra Zaletel, Damir Sekulić, Nataša Zenić, Michael R Esco, Dorica Šajber, Miran Kondrič
OBJECTIVES: This study has aimed at identifying prevalence of injury-occurrence in 24 pre-professional-ballet-dancers (females, 16-18 years of age), and identifying the associations between the body-built and prevalence of injuries. MATERIAL AND METHODS: The sample of variables included: body mass, body height, and 3 somatotype characteristics (mesomorph, ectomorph and endomorph) and data on injuries over the preceding year. RESULTS: Dancers were mostly ectomorphic-mesomorph (endomorphy: 2...
February 21, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28140673/lower-extremity-and-spine-characteristics-in-young-dancers-with-and-without-patellofemoral-pain
#8
Nili Steinberg, Shay Tenenbaum, Israel Hershkovitz, Aviva Zeev, Itzhak Siev-Ner
Very little is known about patellofemoral pain syndrome (PPFS) among young dancers. Understanding the mechanism of the injury and implementing a preventative programme are important in order to minimize the risk of PFPS. The aim of the current study is to determine the extent to which factors such as lower extremity and back characteristics are common among dancers with PFPS. The study population included 271 dancers with PFPS and 271 non-injured dancers, aged 10-16 years. All dancers were screened for morphometric profile, dance discipline (h/week), anatomical anomalies (present/absent of scoliosis, genu valgus/varum, etc...
April 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27989340/endoscopic-excision-of-symptomatic-os-trigonum-in-professional-dancers
#9
Federico Morelli, Daniele Mazza, Pierluigi Serlorenzi, Marco Guidi, Emanuela Camerucci, Cosma Calderaro, Raffaele Iorio, Matteo Guzzini, Andrea Ferretti
The present study reports the clinical results of excision of a symptomatic os trigonum using an endoscopic procedure in professional ballet dancers. The hypothesis was that posterior endoscopic excision of the os trigonum would be safe and effective in treating posterior ankle impingement syndrome related to the os trigonum. Twelve professional dancers underwent excision of a symptomatic os trigonum for PAIS using a posterior endoscopic technique after failure of conservative treatment. The patients were evaluated pre- and postoperatively according to the American Orthopaedic Foot and Ankle Society hindfoot scale score, the Tegner activity scale score, and the visual analog scale score...
January 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27929722/medical-attention-seeking-dance-injuries-systematic-review-of-case-reports
#10
REVIEW
Akilesh Anand Prakash
The objective of this study was to conduct a systematic review of case reports documenting the epidemiology of unique and rare musculoskeletal injuries in dancers. A systematic review was conducted online using PubMed and Google Scholar, as per PRISMA guidelines up to July 30, 2016. Predefined eligibility criteria were applied, and the data thus compiled was analysed. Study quality was assessed based on CARE guidelines. 72 studies reporting 92 dance injuries were included in the review. The average age of dancers was 23 years (SD = 10 years) with majority being females (65%)...
February 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/27661622/surgical-treatment-of-the-accessory-navicular-os-tibiale-externum-in-dancers-a-retrospective-case-series
#11
A B M Boni Rietveld, Willemijn M Diemer
This study is to draw attention to a relatively common anatomical anomaly and its possible operative treatment in dancers. The accessory navicular, or os tibiale externum, is an accessory bone on the medial side of the navicular of the foot at the insertion of the posterior tibial tendon (PTT). It can cause obvious hyperpronation, medial foot pain, and a limited and painful relevé in dancers. To the best of our knowledge, this is the first report on the operative treatment of the accessory navicular exclusively in dancers...
2016: Journal of Dance Medicine & Science
https://www.readbyqxmd.com/read/27575292/differentials-in-turnout-among-professional-classical-ballet-dancers
#12
Isobel Washington, Susan Mayes, Charlotte Ganderton, Tania Pizzari
BACKGROUND: Screening and training of professional dancers is commonly based around beliefs that a large range of turnout is more advantageous in the ballet industry. This belief leads dancers who have limited hip external rotation to compensate by forcing turnout at the knee and ankle, which has been linked to injury. OBJECTIVE: To examine if there is a difference in degree of turnout between three levels of dancers (corps, soloist, principal) in a professional classical ballet company...
September 2016: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/27418231/comparison-of-lower-limb-kinetics-during-vertical-jumps-in-turnout-and-neutral-foot-positions-by-classical-ballet-dancers
#13
Akiko Imura, Yoichi Iino
The purpose of this study was to investigate the effect of hip external rotation (turnout) on lower limb kinetics during vertical jumps by classical ballet dancers. Vertical jumps in a turnout (TJ) and a neutral hip position (NJ) performed by 12 classical female ballet dancers were analysed through motion capture, recording of the ground reaction forces, and inverse dynamics analysis. At push-off, the lower trunk leaned forward 18.2° and 20.1° in the TJ and NJ, respectively. The dancers jumped lower in the TJ than in the NJ...
March 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/27247805/differences-in-cortical-representation-and-structural-connectivity-of-hands-and-feet-between-professional-handball-players-and-ballet-dancers
#14
Jessica Meier, Marlene Sofie Topka, Jürgen Hänggi
It is known that intensive training and expertise are associated with functional and structural neuroadaptations. Most studies, however, compared experts with nonexperts; hence it is, specifically for sports, unclear whether the neuroplastic adaptations reported are sport-specific or sport-general. Here we aimed at investigating sport-specific adaptations in professional handball players and ballet dancers by focusing on the primary motor and somatosensory grey matter (GM) representation of hands and feet using voxel-based morphometry as well as on fractional anisotropy (FA) of the corticospinal tract by means of diffusion tensor imaging-based fibre tractography...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27219302/joint-hypermobility-and-joint-range-of-motion-in-young-dancers
#15
Nili Steinberg, Israel Hershkovitz, Aviva Zeev, Bruce Rothschild, Itzhak Siev-Ner
BACKGROUND: Joint range of motion (ROM) refers to the extent of movement of the joint, recorded using standard goniometers. Joint hypermobility (JHM) is a condition in which most of the synovial joints move beyond the "normal" limits. Joint hypermobility is recognized as a feature of heritable disorders of the connective tissue and can be identified mostly by the Beighton scale. Data on the possible relationship between JHM and joint ROM are lacking in the literature. The main objective of the present study was to evaluate the relationship between JHM and joint ROM in the different lower-extremity joints in young dancers...
June 2016: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/27131184/specificity-of-foot-configuration-during-bipedal-stance-in-ballet-dancers
#16
Antonino Casabona, Giuseppa Leonardi, Ettore Aimola, Giovanni La Grua, Cristina Maria Polizzi, Matteo Cioni, Maria Stella Valle
BACKGROUND AND AIM: Learning highly specialized upright postures may be of benefit for more common as well as for novel stances. In this study, we asked whether this generalization occurs with foot configurations previously trained or depends on a generic increase in balance difficulty. We also explored the possibility that the benefit may concern not only the level of postural performance but also the structural organization of the upright standing. METHODS: Ten elite professional ballet dancers were compared to ten untrained subjects, measuring the motion of the center of pressure (COP) across a set of five stances with different foot configurations...
2016: Gait & Posture
https://www.readbyqxmd.com/read/27046934/modification-of-impulse-generation-during-pirouette-turns-with-increased-rotational-demands
#17
Antonia M Zaferiou, Rand R Wilcox, Jill L McNitt-Gray
This study determined how dancers regulated angular and linear impulse during the initiation of pirouettes of increased rotation. Skilled dancers (n = 11) performed single and double pirouette turns with each foot supported by a force plate. Linear and angular impulses generated by each leg were quantified and compared between turn types using probability-based statistical methods. As rotational demands increased, dancers increased the net angular impulse generated. The contribution of each leg to net angular impulse in both single and double pirouettes was influenced by stance configuration strategies...
October 2016: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/27025450/injuries-in-a-professional-ballet-dance-company-a-10-year-retrospective-study
#18
Prem N Ramkumar, Joseph Farber, Johnny Arnouk, Kevin E Varner, Patrick C Mcculloch
Ballet dancers are high-performance athletes who are particularly susceptible to a wide variety of musculoskeletal injuries. However, they are relatively understudied, and data on their injury rates are lacking. This retrospective study features the largest aggregate data on professional ballet dancers to date and aims to identify the most common diagnoses and areas of injury in this unique population to better direct preventative and clinical practices. The study encompassed a 10-year period from January 2000 to December 2010 of dancers from a single company...
March 2016: Journal of Dance Medicine & Science
https://www.readbyqxmd.com/read/27025447/femoral-shaft-torsion-in-injured-and-uninjured-ballet-dancers-and-its-association-with-other-hip-measures-a-cross-sectional-study
#19
Eliza Hafiz, Claire E Hiller, Leslie L Nicholson, Elizabeth J Nightingale, Alison Grimaldi, Kathryn M Refshauge
Low range femoral torsion, termed "lateral shaft torsion," has been associated with greater range of hip external rotation and turnout in dancers. It is also hypothesized that achieving greater turnout at the hip minimizes torsion at the knee, shank, ankle, and foot, and consequently reduces incidence of lower limb injuries. The primary aims of this study were to investigate: 1. differences in range of femoral shaft torsion between dancers with and without lower limb injuries; and 2. the relationship between femoral shaft torsion, hip external rotation range, and turnout...
March 2016: Journal of Dance Medicine & Science
https://www.readbyqxmd.com/read/27015006/kinematic-analysis-of-hip-and-knee-rotation-and-other-contributors-to-ballet-turnout
#20
Amy E Quanbeck, Jeffrey A Russell, Sara C Handley, Deborah S Quanbeck
Turnout, or external rotation (ER) of the lower extremities, is essential in ballet. The purpose of this study was to utilise physical examination and a biomechanical method for obtaining functional kinematic data using hip and knee joint centres to identify the relative turnout contributions from hip rotation, femoral anteversion, knee rotation, tibial torsion, and other sources. Ten female dancers received a lower extremity alignment assessment, including passive hip rotation, femoral anteversion, tibial torsion, weightbearing foot alignment, and Beighton hypermobility score...
February 2017: Journal of Sports Sciences
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