1
|
Mattiussi AM, Shaw JW, Price P, Brown DD, Cohen DD, Lineham J, Pedlar CR, Tallent J, Atack AC. Ankle mechanics during jump landings across different foot positions in professional ballet dancers. Sports Biomech 2024:1-14. [PMID: 38934793 DOI: 10.1080/14763141.2024.2369913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 06/14/2024] [Indexed: 06/28/2024]
Abstract
This study aimed to investigate the effect foot position on ankle joint mechanics and vertical ground reaction forces (vGRF) across jump landings in professional ballet dancers. Twenty-seven professional ballet dancers (men: 14; women: 13) attended one data collection session, completing five maximal countermovement jumps in parallel, first, second, fourth, and fifth positions. Three-dimensional ankle mechanics, landing vGRF variables, and jump height were recorded via a seven-camera motion capture system and one force platform. A repeated measures multivariate analysis of variance was used to assess the main effects foot position across all target variables. A linear discriminate analysis was conducted to investigate target variables across foot positions. Frontal and transverse plane ankle mechanics had the largest impact when discriminating between foot positions. Ankle power in the transverse plane during jump landing in fourth was double that of all other positions. Our findings suggest that ankle range of motion should be restored before returning to jumps in fourth and fifth positions following distal lower extremity injury. The multiplanar energy transfer observed indicates a need for specific exercises to develop multiplanar force and rate of force development of local structures around the ankle.
Collapse
Affiliation(s)
- Adam M Mattiussi
- School of Sport, Exercise and Applied Sciences, St Mary's University, Twickenham, UK
- Ballet Healthcare, The Royal Ballet, Royal Opera House, London, UK
- Performance Rehabilitation, UK Sports Institute, Bisham, UK
| | - Joseph W Shaw
- School of Sport, Exercise and Applied Sciences, St Mary's University, Twickenham, UK
- Ballet Healthcare, The Royal Ballet, Royal Opera House, London, UK
| | - Phil Price
- School of Sport, Exercise and Applied Sciences, St Mary's University, Twickenham, UK
| | - Derrick D Brown
- Institute of Sport Science, Dance Science, University of Bern, Bern, Switzerland
| | - Daniel D Cohen
- Faculty of Health Sciences, University of Santander, Bucaramanga, Colombia
| | - Jack Lineham
- School of Sport, Exercise and Applied Sciences, St Mary's University, Twickenham, UK
| | - Charles R Pedlar
- School of Sport, Exercise and Applied Sciences, St Mary's University, Twickenham, UK
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Jamie Tallent
- School of Sport, Rehabilitation and Exercise Sciences, University of Essex, Colchester, UK
- Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Australia
| | - Alexandra C Atack
- School of Sport, Exercise and Applied Sciences, St Mary's University, Twickenham, UK
| |
Collapse
|
2
|
Rice PE, Hill RD, Messier SP. Collegiate Dancers With Chronic Ankle Instability Possess Altered Strength and saut de chat Leap Landing Mechanics. J Dance Med Sci 2024; 28:4-13. [PMID: 37700594 DOI: 10.1177/1089313x231195249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
INTRODUCTION Ankle sprains are among the most common injuries in dancers. Following one or more severe sprains, some individuals will experience residual mechanical and functional deficits, otherwise known as chronic ankle instability (CAI). Dancers who suffer from CAI may have weaker musculature surrounding the ankle and altered landing mechanics. The purpose of this study was to compare ankle strength and saut de chat landing mechanics between dancers with and without CAI. METHODS Dancers with and without CAI, defined by the Identification of Functional Ankle Instability (IdFAI), participated in the study (CAI n = 8; IdFAI = 18.75 ± 5.50 points; age = 20 ± 1.5 years; training = 15.5 ± 3.5 years) (Control n = 8; IdFAI = 7.13 ± 3.40 points; age = 19 ± 0.6 years; training = 15.9 ± 2.5 years). Strength and leap landing mechanics were measured on the affected ankle for the CAI group and on the preferred landing leg of a leap for the control group. Concentric and eccentric ankle plantar flexion, and subtalar inversion and eversion strength were determined with dynamometry set at an angular velocity of 60°•s-1. Force plates and motion capture cameras were used to calculate lower extremity kinematic and kinetic data as participants performed 3 saut de chat leaps. Independent t-tests were calculated to determine differences between groups. RESULTS Compared to dancers without CAI, dancers with CAI had lower eccentric plantar flexor strength, landed with higher vertical ground reaction forces, and absorbed greater power at the knee-joint during landing. CONCLUSION Whether dancers who are weaker are more prone to injury or ankle-joint injury leads to muscular weakness is unknown. Dancers with CAI appear to lack control during leap landing while concomitantly shifting loads proximally away from the ankle-joint. We encourage dancers with and without CAI to engage in additional training that enhances ankle strength.
Collapse
Affiliation(s)
- Paige E Rice
- JB Snow Biomechanics Laboratory, Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | - Ryan D Hill
- JB Snow Biomechanics Laboratory, Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | - Stephen P Messier
- JB Snow Biomechanics Laboratory, Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| |
Collapse
|
3
|
Sensing Technology for Assessing Motor Behavior in Ballet: A Systematic Review. SPORTS MEDICINE - OPEN 2022; 8:39. [PMID: 35286494 PMCID: PMC8921372 DOI: 10.1186/s40798-022-00429-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 02/27/2022] [Indexed: 11/10/2022]
Abstract
Abstract
Background
Human performance in classical ballet is a research field of growing interest in the past decades. Technology used to acquire data in human movement sciences has evolved, and is specifically being applied to evaluate ballet movements to better understand dancers’ profiles. We aimed to systematically review sensing technologies that were used to extract data from dancers, in order to improve knowledge regarding the performance of ballet movements through quantification.
Methods
PubMed, MEDLINE, EMBASE, and Web of Science databases were accessed through 2020. All studies that used motor control tools to evaluate classical ballet movements, and possible comparisons to other types of dance and sports movements were selected. Pertinent data were filled into a customized table, and risk of bias was carefully analyzed.
Results
Eighty studies were included. The majority were regarding classical ballet and with pre-professional dancers. Forty-four studies (55%) used two or more types of technology to collect data, showing that motion capture technique, force plates, electromyography, and inertial sensors are the most frequent ways to evaluate ballet movements.
Discussion
Research to evaluate ballet movements varies greatly considering study design and specific intervention characteristics. Combining two or more types of technology may increase data reliability and optimize the characterization of ballet movements. A lack of studies addressing muscle–brain interaction in dancers were observed, and given the potential of novel insights, further studies in this field are warranted. Finally, using quantitative tools opens the perspective of defining what is considered an elite dancer.
Collapse
|
4
|
Veirs KP, Fagg AH, Haleem AM, Jeffries LM, Randall K, Sisson SB, Dionne CP. Applications of Biomechanical Foot Models to Evaluate Dance Movements Using Three-Dimensional Motion Capture: A Review of the Literature. J Dance Med Sci 2022; 26:69-86. [PMID: 35287789 DOI: 10.12678/1089-313x.061522a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Dance movement requires excessive, repetitive range of motion (ROM) at the foot-ankle complex, possibly contributing to the high rate of injury among dancers. However, we know little about foot biomechanics during dance movements. Researchers are using three-dimensional (3D) motion capture systems to study the in vivo kinematics of joint segments more frequently in dance-medicine research, warranting a literature review and quality assessment evaluation. The purpose of this literature review was to identify and evaluate studies that used 3D motion capture to analyze in vivo biomechanics of the foot and ankle for a cohort of dancers during dance-specific movement. Three databases (PubMed, Ovid MEDLINE, CINAHL) were accessed along with hand searches of dance-specific journals to identify relevant articles through March 2020. Using specific selection criteria, 25 studies were identified. Fifteen studies used single-segment biomechanical foot models originally created to study gait, four used a novel two-segment model, and six utilized a multi-seg- ment foot model. Nine of the studies referenced common and frequently published gait marker sets and four used a dance-specific biomechanical model with purposefully designed foot segments to analyze the dancers' foot and ankle. Description of the biomechanical models varied, reducing the reproducibility of the models and protocols. Investigators concluded that there is little evidence that the extreme total, segmental, and inter-segmental foot and ankle ROM exerted by dancers are being evaluated during dance-specific movements using 3D motion capture. Findings suggest that 3D motion capture is a robust measurement tool that has the capability to assist researchers in evaluating the in vivo, inter-segmental motion of the foot and ankle to potentially discover many of the remaining significant factors predisposing dancers to injury. The literature review synthesis is presented with recommendations for consideration when evaluating results from studies that utilized a 3D biomechanical foot model to evaluate dance-specific movement.
Collapse
Affiliation(s)
- Kimberly P Veirs
- Oklahoma City University, Oklahoma City, Oklahoma, USA; kpveirs@okcu. edu
| | | | - Amgad M Haleem
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA, and Cairo University College of Medicine, Cairo, Egypt
| | - Lynn M Jeffries
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Ken Randall
- University of Oklahoma Health Sciences Center, Tulsa, Oklahoma, USA
| | - Susan B Sisson
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Carol P Dionne
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| |
Collapse
|
5
|
Molinaro L, Taborri J, Santospagnuolo A, Vetrano M, Vulpiani MC, Rossi S. Sensor-Based Indices for the Prediction and Monitoring of Anterior Cruciate Ligament Injury: Reliability Analysis and a Case Study in Basketball. SENSORS 2021; 21:s21165341. [PMID: 34450783 PMCID: PMC8398404 DOI: 10.3390/s21165341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/30/2021] [Accepted: 08/05/2021] [Indexed: 11/26/2022]
Abstract
The possibility of measuring predictive factors to discriminate athletes at higher risk of anterior cruciate ligament (ACL) injury still represents an open research question. We performed an observational study with thirteen female basketball players who performed monopodalic jumps and single-leg squat tests. One of them suffered from an ACL injury after the first test session. Data gathered from twelve participants, who did not suffer from ACL injury, were used for a reliability analysis. Parameters related to leg stability, load absorption capability and leg mobility showed good-to-excellent reliability. Path length, root mean square of the acceleration and leg angle with respect to the vertical axis revealed themselves as possible predictive factors to identify athletes at higher risk. Results confirm that six months after reconstruction represents the correct time for these athletes to return to playing. Furthermore, the training of leg mobility and load absorption capability could allow athletes to reduce the probability of new injuries.
Collapse
Affiliation(s)
- Luca Molinaro
- Department of Economics, Engineering, Society and Business Organization (DEIM), University of Tuscia, 01100 Viterbo, Italy; (L.M.); (J.T.)
| | - Juri Taborri
- Department of Economics, Engineering, Society and Business Organization (DEIM), University of Tuscia, 01100 Viterbo, Italy; (L.M.); (J.T.)
| | - Adriano Santospagnuolo
- Physical Medicine and Rehabilitation Unit, Sant ‘Andrea Hospital, “Sapienza” University of Rome, 00189 Rome, Italy; (A.S.); (M.V.)
| | - Mario Vetrano
- Physical Medicine and Rehabilitation Unit, Sant ‘Andrea Hospital, “Sapienza” University of Rome, 00189 Rome, Italy; (A.S.); (M.V.)
| | - Maria Chiara Vulpiani
- Physical Medicine and Rehabilitation Unit, Sant ‘Andrea Hospital, “Sapienza” University of Rome, 00189 Rome, Italy; (A.S.); (M.V.)
- Sports Medicine Institute CONI Rome, 00197 Rome, Italy;
| | - Stefano Rossi
- Department of Economics, Engineering, Society and Business Organization (DEIM), University of Tuscia, 01100 Viterbo, Italy; (L.M.); (J.T.)
- Correspondence: ; Tel.: +39-07-6135-7049
| |
Collapse
|
6
|
Mizoguchi Y, Urakawa T, Kurabayashi H. Safer return to jazz dance instruction after simultaneous bilateral total hip arthroplasty. BMJ Case Rep 2021; 14:14/7/e243214. [PMID: 34266826 PMCID: PMC8286752 DOI: 10.1136/bcr-2021-243214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
To describe the case of a 48-year-old Japanese female patient with more than two decades of experience in jazz dance instructor returning to work after simultaneous bilateral total hip arthroplasty (SBTHA). We provided her with a tailored postoperative physical therapy programme considering her preoperative activity level and skills using three-dimensional motion analysis for guidance. The patient returned to jazz dance instruction 8 months after undergoing SBTHA, and her disease-specific quality of life assessment score at 1-year postsurgery was almost perfect. Use of three-dimensional motion analysis helped facilitate our assessment of whether her hip angle was within the acceptable range for teaching the compound movements necessary in jazz dance, but her preoperative experience was crucial in determining her full-scale participation in jazz dance. At present, 7 years since the surgery, the patient is able to continue jazz dancing, the THA component remains stable.
Collapse
Affiliation(s)
- Yasuaki Mizoguchi
- Rehabilitation, Saitama Medical University Hospital, Iruma-gun, Saitama, Japan .,Kimura Orthopeadic Clinic, Kumagaya, Saitama, Japan
| | - Tsukasa Urakawa
- Rehabilitation, Saitama Medical University Hospital, Iruma-gun, Saitama, Japan
| | - Hitoshi Kurabayashi
- Rehabilitation, Saitama Medical University Hospital, Iruma-gun, Saitama, Japan
| |
Collapse
|
7
|
A Machine-Learning Approach to Measure the Anterior Cruciate Ligament Injury Risk in Female Basketball Players. SENSORS 2021; 21:s21093141. [PMID: 33946515 PMCID: PMC8125336 DOI: 10.3390/s21093141] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/19/2021] [Accepted: 04/28/2021] [Indexed: 12/16/2022]
Abstract
Anterior cruciate ligament (ACL) injury represents one of the main disorders affecting players, especially in contact sports. Even though several approaches based on artificial intelligence have been developed to allow the quantification of ACL injury risk, their applicability in training sessions compared with the clinical scale is still an open question. We proposed a machine-learning approach to accomplish this purpose. Thirty-nine female basketball players were enrolled in the study. Leg stability, leg mobility and capability to absorb the load after jump were evaluated through inertial sensors and optoelectronic bars. The risk level of athletes was computed by the Landing Error Score System (LESS). A comparative analysis among nine classifiers was performed by assessing the accuracy, F1-score and goodness. Five out nine examined classifiers reached optimum performance, with the linear support vector machine achieving an accuracy and F1-score of 96 and 95%, respectively. The feature importance was computed, allowing us to promote the ellipse area, parameters related to the load absorption and the leg mobility as the most useful features for the prediction of anterior cruciate ligament injury risk. In addition, the ellipse area showed a strong correlation with the LESS score. The results open the possibility to use such a methodology for predicting ACL injury.
Collapse
|
8
|
Effects of the infrared laser on classical ballerinas' feet: Analysis of plantar foot and static balance. J Bodyw Mov Ther 2020; 26:246-252. [PMID: 33992253 DOI: 10.1016/j.jbmt.2020.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 08/27/2020] [Accepted: 09/20/2020] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND PURPOSE Overuse injuries and painful symptoms in athletes and dancers (especially classical ballerinas) may lead to reduced functional performance. However, laser application may reduce pain and increase physical conditioning. The aim of the current study was to evaluate the immediate and long-term effects of infrared laser on classical ballerinas' feet. METHODS Eight female adults who perform classical ballet training and feel pain in their foot, but report no injuries in the last 6 months participated in the study. Infrared laser (808 nm) was applied on ballerina's feet twice a week during three months. The laser parameters utilized were 100 mW average optical power and spot size of 0.04 cm2 applied during 1 min, leading to 6 J and 125 J/cm2 per point. Thermography, algometry and unipodal static standing balance test were performed. RESULTS There was a significant increase in plantar arch temperature (1.6 °C for center and 2.3 °C for border, p < 0.05) immediately after laser treatment for all ballerinas. The pressure pain thresholds (PPT) were significantly increased for 5 of 7 analyzed sites (p < 0.05). Regarding to the static standing balance, the time on one-foot showed a significant increases (from 23 ± 12 s to 34 ± 13 s, p < 0.05) only when the test was performed on the left foot (support foot). CONCLUSION Then, there were pain relief and improvement of functional performance in ballerinas. The possible mechanism of laser action in reducing pain and thus enhancing performance, like higher blood flow of foot due to an increase of cutaneous temperature, will be discussed.
Collapse
|
9
|
Gorwa J, Kabaciński J, Murawa M, Fryzowicz A. On the track of the ideal turnout: Electromyographic and kinematic analysis of the five classical ballet positions. PLoS One 2020; 15:e0230654. [PMID: 32210478 PMCID: PMC7094876 DOI: 10.1371/journal.pone.0230654] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 02/05/2020] [Indexed: 11/18/2022] Open
Abstract
The turnout of the lower extremities is the major component of the classical ballet positions (CPs) and correctly is initiated in the hips. The aim of this research was to determine the differences in the electromyographic and kinematic variables in the five CPs in ballet students with greater and lesser amount of passive hip external rotation (HER). A group of 14 female pre-professional ballet dancers 11–16 years of age participated in the study. Based on the amount of passive HER, participants with higher values made up greater rotation group (n = 7) whereas those with lesser values formed lesser rotation group (n = 7). Electromyographic activity of 14 muscles from right side of the trunk and right lower extremity was recorded with the surface electrodes while subjects were standing in all five CPs (CP1-CP5). The external rotation of the hips, knees and feet were recorded with the motion capture system. The kinematic differences between the groups were revealed in asymmetric positions CP4 and CP5 where foot progression angle was significantly lesser in forward than backward setting only in lesser rotation group. In lesser rotation group the ankle and back muscles were more engaged in CPs while abdominal and hip muscles less when compared with greater rotation group. This finding suggests that in the group with lesser passive HER the mechanism of forced turnout was employed. The most remarkable finding in our work was that various electromyographic patterns can be observed between groups in all CPs, while kinematic differences may be marked only in asymmetric positions.
Collapse
Affiliation(s)
- Joanna Gorwa
- Department of Biomechanics, Poznan University of Physical Education, Poznan, Poland
- * E-mail:
| | - Jarosław Kabaciński
- Department of Biomechanics, Poznan University of Physical Education, Poznan, Poland
| | - Michał Murawa
- Department of Biomechanics, Poznan University of Physical Education, Poznan, Poland
| | - Anna Fryzowicz
- Department of Biomechanics, Poznan University of Physical Education, Poznan, Poland
| |
Collapse
|
10
|
Hendry D, Chai K, Campbell A, Hopper L, O'Sullivan P, Straker L. Development of a Human Activity Recognition System for Ballet Tasks. SPORTS MEDICINE-OPEN 2020; 6:10. [PMID: 32034560 PMCID: PMC7007459 DOI: 10.1186/s40798-020-0237-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/20/2020] [Indexed: 11/23/2022]
Abstract
Background Accurate and detailed measurement of a dancer’s training volume is a key requirement to understanding the relationship between a dancer’s pain and training volume. Currently, no system capable of quantifying a dancer’s training volume, with respect to specific movement activities, exists. The application of machine learning models to wearable sensor data for human activity recognition in sport has previously been applied to cricket, tennis and rugby. Thus, the purpose of this study was to develop a human activity recognition system using wearable sensor data to accurately identify key ballet movements (jumping and lifting the leg). Our primary objective was to determine if machine learning can accurately identify key ballet movements during dance training. The secondary objective was to determine the influence of the location and number of sensors on accuracy. Results Convolutional neural networks were applied to develop two models for every combination of six sensors (6, 5, 4, 3, etc.) with and without the inclusion of transition movements. At the first level of classification, including data from all sensors, without transitions, the model performed with 97.8% accuracy. The degree of accuracy reduced at the second (83.0%) and third (75.1%) levels of classification. The degree of accuracy reduced with inclusion of transitions, reduction in the number of sensors and various sensor combinations. Conclusion The models developed were robust enough to identify jumping and leg lifting tasks in real-world exposures in dancers. The system provides a novel method for measuring dancer training volume through quantification of specific movement tasks. Such a system can be used to further understand the relationship between dancers’ pain and training volume and for athlete monitoring systems. Further, this provides a proof of concept which can be easily translated to other lower limb dominant sporting activities
Collapse
Affiliation(s)
- Danica Hendry
- School of Physiotherapy and Exercise Science, Curtin University, Perth, Western Australia, Australia.
| | - Kevin Chai
- Curtin Institute for Computations, Curtin University, Perth, Western Australia, Australia
| | - Amity Campbell
- School of Physiotherapy and Exercise Science, Curtin University, Perth, Western Australia, Australia
| | - Luke Hopper
- Western Australian Academy of Performing Arts, Perth, Western Australia, Australia
| | - Peter O'Sullivan
- School of Physiotherapy and Exercise Science, Curtin University, Perth, Western Australia, Australia
| | - Leon Straker
- School of Physiotherapy and Exercise Science, Curtin University, Perth, Western Australia, Australia
| |
Collapse
|
11
|
Perry SK, Buddhadev HH, Brilla LR, Suprak DN. Mechanical Demands at the Ankle Joint During Saut de Chat and Temps levé Jumps in Classically Trained Ballet Dancers. Open Access J Sports Med 2019; 10:191-197. [PMID: 31827337 PMCID: PMC6902839 DOI: 10.2147/oajsm.s234289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 11/20/2019] [Indexed: 11/25/2022] Open
Abstract
Background During ballet, injuries to the Achilles tendon are associated with the take-off phase of various jumps. Research question The purpose of the study was to assess differences in mechanical demand on the body, specifically at the ankle, in two single-leg jumps commonly trained in ballet: a saut de chat (SDC) and a temps levé (TL). Methods Fifteen classically trained female dancers had 16 reflective markers placed on the lower body and each dancer performed each jump three times on a force plate. The marker position data and ground reaction forces (GRF) were captured synchronously at 250 Hz and 1000 Hz, respectively. Peak vertical GRF, mean rate of force development (RFD), peak ankle moment, and peak ankle power were determined and averaged across trials. Paired t-tests were used to determine differences between the SDC and the TL. Results When compared to the TL, the SDC displayed significantly higher peak vertical GRF (p = 0.003), RFD (p = 0.002), and peak ankle moment and power (p < 0.001). The effect sizes for these differences were large for all variables (Cohen’s d > 0.80). Conclusion The mechanical demand at the ankle joint is significantly greater for the SDC than the TL.
Collapse
Affiliation(s)
- Sarah K Perry
- Department of Health and Human Development, Western Washington University, Bellingham, WA, USA
| | - Harsh H Buddhadev
- Department of Health and Human Development, Western Washington University, Bellingham, WA, USA
| | - Lorraine R Brilla
- Department of Health and Human Development, Western Washington University, Bellingham, WA, USA
| | - David N Suprak
- Department of Health and Human Development, Western Washington University, Bellingham, WA, USA
| |
Collapse
|
12
|
Phan K, Nicholson LL, Hiller CE, Chan C. Prevalence and unique patterns of lower limb hypermobility in elite ballet dancers. Phys Ther Sport 2019; 41:55-63. [PMID: 31759239 DOI: 10.1016/j.ptsp.2019.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/08/2019] [Accepted: 11/10/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Determine the prevalence of lower limb hypermobility in elite dancers and secondarily to describe the patterns of mobility. DESIGN Cross sectional. SETTING Self-report questionnaires and physical assessments were undertaken at a tertiary dance institution and a professional ballet company. PARTICIPANTS Fifty-seven pre-professional and 29 professional ballet dancers (21±4years, 64% female, mean 13.7years training) were recruited. MAIN OUTCOME MEASURES Lower Limb Assessment Score (LLAS) was used to assess hypermobility. Prevalence was determined by descriptive statistics, between-leg and -group comparisons were analysed using the chi-square statistic and the pattern of mobility by cluster analyses. RESULTS The right leg was significantly more hypermobile than the left for the whole cohort (44% vs 40% meeting ≥7/12 for the LLAS; LLAS mean/12(SD): right:5.0(2.4) and 7.6(1.9); left:4.8(2.1) and 6.7(2.0) in pre-professionals and professionals respectively (p = 0.02)). Subtalar pronation (p < 0.001) and hip abduction/external rotation (left:p = 0.01; right:p < 0.001) were significantly more hypermobile bilaterally in professionals. Three hypermobility profiles on the left and four on the right lower limb were identified. CONCLUSIONS This paper presents unique lower limb hypermobility profiles identified in elite dancers.
Collapse
Affiliation(s)
- Katie Phan
- The University of Sydney, School of Health Sciences, Faculty of Medicine and Health, Australia
| | - Leslie L Nicholson
- The University of Sydney, School of Medical Sciences, Faculty of Medicine and Health, Australia
| | - Claire E Hiller
- The University of Sydney, School of Health Sciences, Faculty of Medicine and Health, Australia
| | - Cliffton Chan
- The University of Sydney, School of Medical Sciences, Faculty of Medicine and Health, Australia.
| |
Collapse
|
13
|
Hansberger BL, Acocello S, Slater LV, Hart JM, Ambegaonkar JP. Peak Lower Extremity Landing Kinematics in Dancers and Nondancers. J Athl Train 2018. [PMID: 29528687 DOI: 10.4085/1062-6050-465-16] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
CONTEXT Anterior cruciate ligament (ACL) injuries often occur during jump landings and can have detrimental short-term and long-term functional effects on quality of life. Despite frequently performing jump landings, dancers have lower incidence rates of ACL injury than other jump-landing athletes. Planned versus unplanned activities and footwear may explain differing ACL-injury rates among dancers and nondancers. Still, few researchers have compared landing biomechanics between dancers and nondancers. OBJECTIVE To compare the landing biomechanics of dancers and nondancers during single-legged (SL) drop-vertical jumps. DESIGN Cross-sectional study. SETTING Laboratory. PATIENTS OR OTHER PARTICIPANTS A total of 39 healthy participants, 12 female dancers (age = 20.9 ± 1.8 years, height = 166.4 ± 6.7 cm, mass = 63.2 ± 16.4 kg), 14 female nondancers (age = 20.2 ± 0.9 years, height = 168.9 ± 5.0 cm, mass = 61.6 ± 7.7 kg), and 13 male nondancers (age = 22.2 ± 2.7 years, height = 180.6 ± 9.7 cm, mass = 80.8 ± 13.2 kg). INTERVENTION(S) Participants performed SL-drop-vertical jumps from a 30-cm-high box in a randomized order in 2 activity (planned, unplanned) and 2 footwear (shod, barefoot) conditions while a 3-dimensional system recorded landing biomechanics. MAIN OUTCOME MEASURE(S) Overall peak sagittal-plane and frontal-plane ankle-, knee-, and hip-joint kinematics (joint angles) were compared across groups using separate multivariate analyses of variance followed by main-effects testing and pairwise-adjusted Bonferroni comparisons as appropriate ( P < .05). RESULTS No 3-way interactions existed for sagittal-plane or frontal-plane ankle (Wilks λ = 0.85, P = .11 and Wilks λ = 0.96, P = .55, respectively), knee (Wilks λ = 1.00, P = .93 and Wilks λ = 0.94, P = .36, respectively), or hip (Wilks λ = 0.99, P = .88 and Wilks λ = 0.97, P = .62, respectively) kinematics. We observed no group × footwear interactions for sagittal-plane or frontal-plane ankle (Wilks λ = 0.94, P = .43 and Wilks λ = 0.96, P = .55, respectively), knee (Wilks λ = 0.97, P = .60 and Wilks λ = 0.97, P = .66, respectively), or hip (Wilks λ = 0.99, P = .91 and Wilks λ = 1.00, P = .93, respectively) kinematics, and no group × activity interactions were noted for ankle frontal-plane (Wilks λ = 0.92, P = .29) and sagittal- and frontal-plane knee (Wilks λ = 0.99, P = .81 and Wilks λ = 0.98, P = .77, respectively) and hip (Wilks λ = 0.88, P = .13 and Wilks λ = 0.85, P = .08, respectively) kinematics. A group × activity interaction (Wilks λ = 0.76, P = .02) was present for ankle sagittal-plane kinematics. Main-effects testing revealed different ankle frontal-plane angles across groups ( F2,28 = 3.78, P = .04), with male nondancers having greater ankle inversion than female nondancers ( P = .05). CONCLUSIONS Irrespective of activity type or footwear, female nondancers landed with similar hip and knee kinematics but greater peak ankle eversion and less peak ankle dorsiflexion (ie, positions associated with greater ACL injury risk). Ankle kinematics may differ between groups due to different landing strategies and training used by dancers. Dancers' training should be examined to determine if it results in a reduced occurrence of biomechanics related to ACL injury during SL landing.
Collapse
|
14
|
Affiliation(s)
- Sarah L. Carter
- Podiatric Medicine and Surgery Division, Faculty of Health & Medical Sciences, School of Allied Health, The University of Western Australia, Perth, Australia
- Western Australian Academy of Performing Arts, Edith Cowan University, Perth, Australia
| | - Nahoko Sato
- Department of Physical Therapy, Faculty of Rehabilitation Science, Nagoya Gakuin University, Seto, Aichi, Japan
| | - Luke S. Hopper
- Western Australian Academy of Performing Arts, Edith Cowan University, Perth, Australia
| |
Collapse
|
15
|
Steinberg N, Dar G, Dunlop M, Gaida JE. The relationship of hip muscle performance to leg, ankle and foot injuries: a systematic review. PHYSICIAN SPORTSMED 2017; 45:49-63. [PMID: 28067582 DOI: 10.1080/00913847.2017.1280370] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVES Hip control affects movement and muscle firing patterns in the leg, ankle and foot, and may contribute to overuse injuries. Muscle performance can be measured as strength, endurance or muscle activation patterns. Our objective was to systematically review whether hip muscle performance is associated with leg, ankle and foot injuries. DATA SOURCES A structured and comprehensive search of six medical literature databases was combined with forward and backward citation tracking (AMED, CINAHL, EMBASE, Medline, Scopus and SportDiscus). STUDY SELECTION Eligible studies measured hip muscle performance in individuals with musculoskeletal injuries below the tibial tuberosity, using dynamometry or electromyography (EMG). All studies compared an injured group with a control group or compared the injured and non-injured limb in the same individual. DATA EXTRACTION Data was extracted from each study independently by two authors. DATA SYNTHESIS Twenty case-control and four prospective studies (n = 24) met the inclusion criteria. Injury classifications included chronic ankle instability (n = 18), Achilles tendinopathy (n = 2), medial tibial stress syndrome and tibial stress fracture (n = 1), posterior tibial tendon dysfunction (n = 1), and exertional medial tibial pain (n = 2). Eleven of the studies revealed differences in hip muscle performance indicating less strength, delayed onset activation and decreased duration of activation in the injured groups. Two studies found evidence for differences between groups only in some of their measurements. Three out of the four prospective studies revealed that hip muscle performance was not a risk factor for leg, ankle and foot injuries. CONCLUSIONS This review provides limited evidence that hip muscle performance variables are related to leg, ankle and foot injuries. Emerging evidence indicates this might be a result of the injury rather than a contributor to the injury.
Collapse
Affiliation(s)
- Nili Steinberg
- a Wingate College of Physical Education and Sports Science , Wingate Institute , Netanya , Israel
| | - Gali Dar
- b Department of Physical Therapy , University of Haifa , Haifa , Israel
| | - Martin Dunlop
- c Physiotherapy Department , Altnagelvin Area Hospital , Derry , Northern Ireland
| | - James Edmund Gaida
- d Discipline of Physiotherapy , Canberra University , Canberra , Australia
| |
Collapse
|
16
|
Zacaron KAM, Dias JMD, Alencar MA, Almeida LLD, Alberto Mourão-Júnior C, Dias RC. Electromyographic normalization of vastus lateralis and biceps femoris co-contraction during gait of elderly females. FISIOTERAPIA EM MOVIMENTO 2016. [DOI: 10.1590/1980-5918.029.004.ao15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract Introduction: Analyze muscle co-contraction using electromyographic signals, which are normalized to compare individuals, muscles and studies. Maximum voluntary isometric contraction (MVIC) and peak electrical activity (PEA) during movement are the most widely used forms of normalization. Objective: Compare inter-subject variability and investigate the association between the co-contraction indices of the vastus lateralis and biceps femoris during gait, normalized by MVIC and PEA. Methods: Thirty elderly women, aged 70.33 ± 3.69 years took part. Electrical muscle activity during MVIC and gait was recorded using a Biopac MP100 electromyograph. MVIC was performed in a Biodex isokinetic dynamometer. For normalization, the signals were divided by the Root Mean Square values of MVIC and PEA of gait. Results: The coefficient of variation of non-normalized data was 69.3%, and those normalized by PEA and MVIC were 30.4% and 48.9% respectively. Linear regression analysis resulted in a prediction model: PEA = 0.04 + 0.16 x MVIC. The goodness of fit of the regression model was statistically significant (p=0.02). The confidence interval (95% CI) for the intercept was between 0.02 and 0.29 and for MVIC between 0.03 and 0.06. Conclusions: The data normalized by PEA showed less variation than those normalized by MVIC. A 100% variation in data normalized by MVIC resulted in a 16% variation in data normalized by PEA, while variation in normalization by MVIC accounts for 17% of the variation in normalization by PEA and vice versa.
Collapse
Affiliation(s)
| | | | - Mariana Asmar Alencar
- Universidade Federal de Minas Gerais, Brazil; Universidade Fundação Mineira de Educação e Cultura, Brazil
| | | | | | - Rosângela Correa Dias
- Universidade Federal de Minas Gerais, Brazil; Universidade Federal de São Paulo, Brazil
| |
Collapse
|
17
|
Hendry D, Campbell A, Ng L, Grisbrook TL, Hopper DM. Effect of Mulligan's and Kinesio knee taping on adolescent ballet dancers knee and hip biomechanics during landing. Scand J Med Sci Sports 2014; 25:888-96. [PMID: 25091570 DOI: 10.1111/sms.12302] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2014] [Indexed: 11/26/2022]
Abstract
Taping is often used to manage the high rate of knee injuries in ballet dancers; however, little is known about the effect of taping on lower-limb biomechanics during ballet landings in the turnout position. This study investigated the effects of Kinesiotape (KT), Mulligan's tape (MT) and no tape (NT) on knee and hip kinetics during landing in three turnout positions. The effect of taping on the esthetic execution of ballet jumps was also assessed. Eighteen pain-free 12-15-year-old female ballet dancers performed ballet jumps in three turnout positions, under the three knee taping conditions. A Vicon Motion Analysis system (Vicon Oxford, Oxford, UK) and Advanced Mechanical Technology, Inc. (Watertown, Massa chusetts, USA) force plate collected lower-limb mechanics. The results demonstrated that MT significantly reduced peak posterior knee shear forces (P = 0.025) and peak posterior (P = 0.005), medial (P = 0.022) and lateral (P = 0.014) hip shear forces compared with NT when landing in first position. KT had no effect on knee or hip forces. No significant differences existed between taping conditions in all landing positions for the esthetic measures. MT was able to reduce knee and the hip forces without affecting the esthetic performance of ballet jumps, which may have implications for preventing and managing knee injuries in ballet dancers.
Collapse
Affiliation(s)
- D Hendry
- School of Physiotherapy and Exercise Science, Centre for Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia
| | - A Campbell
- School of Physiotherapy and Exercise Science, Centre for Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia
| | - L Ng
- School of Physiotherapy and Exercise Science, Centre for Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia
| | - T L Grisbrook
- School of Physiotherapy and Exercise Science, Centre for Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia
| | - D M Hopper
- School of Physiotherapy and Exercise Science, Centre for Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia
| |
Collapse
|
18
|
Martinez BR, Curtolo M, Lucato ACS, Yi LC. Balance control, hamstring flexibility and range of motion of the hip rotators in ballet dancers. EUROPEAN JOURNAL OF PHYSIOTHERAPY 2014. [DOI: 10.3109/21679169.2014.933485] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
19
|
Abstract
Dynamic postural stability has been widely studied for single-leg landing, but seldom considered for double-leg landing. This study aimed to evaluate the dynamic postural stability and the influence mechanism of muscle activities during double-leg drop landing. Eight recreationally active males and eight recreationally active females participated in this study and dropped individually from three heights (0.32 m, 0.52 m, and 0.72 m). Ground reaction force was recorded to calculate the time to stabilisation. Electromyographic activities were recorded for selected lower-extremity muscles. A multivariate analysis of variance was carried out and no significant influence was found in time to stabilisation between genders or limb laterals (P > 0.05). With increasing drop height, time to stabilisation decreased significantly in two horizontal directions and the lower-extremity muscle activities were enhanced. Vertical time to stabilisation was not significantly influenced by drop height. Dynamic postural stability improved by neuromuscular change more than that required due to the increase of drop height. Double-leg landing on level ground is a stable movement, and the body would often be injured before dynamic postural stability is impaired. It is understandable to protect tissues from mechanical injuries by the sacrifice of certain dynamic postural stability in the design of protective devices or athlete training.
Collapse
Affiliation(s)
- Wenxin Niu
- Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | | | | | | |
Collapse
|