Kinematic and kinetic analyses of the toes in dance movements (original) (raw)
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Kinematic analysis of the gait in professional ballet dancers
Acta Gymnica, 2014
Background: A ballet dance routine places extreme functional demands on the musculoskeletal system and affects the motor behaviour of the dancers. An extreme ballet position places high stress on many segments of the dancer's body and can significantly influence the mobility of the lower limb joints. Objective: The aim of this study was to observe the differences in the gait pattern between ballet dancers and non-dancers. Methods: Thirteen professional ballet dancers (5 males, 8 females; age 24.1 ± 3.8 years; height 170.2 ± 8.5 cm; weight 58.3 ± 11.2 kg) participated in this research. We compared these subjects with twelve controls (3 males, 9 females; mean age 24.3 ± 2.75 years; height 173.3 ± 6.01 cm; weight 72.2 ± 12.73 kg). None of the participants had any history of serious musculoskeletal pathology or injury or surgery in the lower limbs. Control group had no ballet experience. Each participant performed five trials of the gait at self-selected walking speed. Kinematic data was obtained using the Vicon MX optoelectronic system. The observed data was processed in the Vicon Nexus and Vicon Polygon programmes and statistically evaluated in Statistica. Non-parametric test (Mann-Whitney U test, p < .05) was applied for comparing the dancers and the controls. Results: Significant differences (p < .05) were found in all lower limb joints. In the dancers, greater hip extension (-15.30 ± 3.31° vs. -12.95 ± 6.04°; p = .008) and hip abduction (-9.18 ± 5.89° vs. -6.08 ± 2.52°; p < .001) peaks together with increased pelvic tilt (3.33 ± 1.26° vs. 3.01 ± 1.46°; p = .020), pelvic obliquity (12.46 ± 3.05° vs. 10.34 ± 3.49°; p < .001) and pelvic rotation (14.29 ± 3.77° vs. 13.26 ± 4.91°; p = .029) were observed. Additionally, the dancers demonstrated greater knee flexion (65.67 ± 4.65° vs. 62.45 ± 5.24°; p = .002) and knee extension (3.80 ± 4.02° vs. -1.54 ± 5.65°; p < .001) peaks during the swing phase when compared to the controls. Decreased maximal ankle plantar flexion was observed during the loading response (-8.84 ± 3.74° vs.
Biomechanical Approach to Ballet Movements: A Preliminary Study
2000
Movements in ballet dance often involve extreme joint positions and muscular efforts that may exceed normal ranges of motion and generate high stresses on bone and soft tissues. The primary aim of this study was to apply the principles and techniques of biomechanics to study ballet movements. Ground reaction forces and plantar pressure distribution were registered with a Kistler Platform and a Tekscan Systems respectively. Knee joint action in the sagittal plane was simultaneously collected with an electrogoniometer. Peak vertical forces, peak pressures and knee flexion-extension were analyzed and discussed. A better understanding of these biomechanical aspects may lead to a decrease of the injury risks and also to more graceful and efficient dance movements.
2022
Tanzsport ist ein zunehmend beliebter Wettkampf- und Freizeitsport. Über die Biomechanik von Tanzbewegungen gibt es jedoch nur wenige Untersuchungen. Ziel dieser Studie war ein umfassender erster Überblick über die Biomechanik im Tanzstil Rumba und die Auswirkungen von Schuhwerk und Leistungsniveau darauf. Die Intention dahinter war, Erkenntnisse für die Verletzungsprävention und über die tänzerische Technik zu gewinnen.Es wurden Marker-Trajektorien der unteren Extremitäten, Bodenreaktionskräfte und Elektromyographiedaten für den normalen Gang und verschiedene Rumba-Grundschritte gemessen. Die Daten wurden von Tänzerinnen zweier verschiedener Leistungsniveaus (Anfänger und Profis) und für drei verschiedene Absatzhöhen (barfuss, Trainingsschuhe und Lateinschuhe) erhoben. Auf der Grundlage der gemessenen Daten wurden in OpenSim muskuloskelettale Simulationen durchgeführt, um Gelenkswinkel und Kontaktkräfte in Hüft-, Knie- und Sprunggelenk zu berechnen. Der verwendete Bewegungsumfang, ...
Lower Extremity Kinetics in Tap Dance '10
Tap dance is a unique performing art utilizing the lower extremities as percussion instruments. In a previous study these authors reported decreased injury prevalence among tap dancers compared to other dance and sports participants. No biomechanical analyses of tap dance exist to explain this finding. The purpose of the current pilot study was to provide a preliminary overview of normative peak kinetic and kinematic data, based on the hypothesis that tap dance generates relatively low ground reaction forces and joint forces and moments. Six professional tap dancers performed four common tap dance sequences that produced data captured by the use of a force platform and a five-camera motion analysis system. The mean vertical ground reaction force for all sequences was found to be 2.06 ± 0.55 BW. Mean peak sagittal, frontal, and transverse plane joint moments (hip, knee, and ankle) ranged from 0.07 to 2.62 N∙m/ kg. These small ground reaction forces and joint forces and moments support our hypothesis, and may explain the relatively low injury incidence in tap dancers. Nevertheless, the analysis is highly complex, and other factors remain to be studied and clarified.
Lower extremity kinetics in tap dance
Journal of dance medicine & science : official publication of the International Association for Dance Medicine & Science, 2010
Tap dance is a unique performing art utilizing the lower extremities as percussion instruments. In a previous study these authors reported decreased injury prevalence among tap dancers compared to other dance and sports participants. No biomechanical analyses of tap dance exist to explain this finding. The purpose of the current pilot study was to provide a preliminary overview of normative peak kinetic and kinematic data, based on the hypothesis that tap dance generates relatively low ground reaction forces and joint forces and moments. Six professional tap dancers performed four common tap dance sequences that produced data captured by the use of a force platform and a five-camera motion analysis system. The mean vertical ground reaction force for all sequences was found to be 2.06+/-0.55 BW. Mean peak sagittal, frontal, and transverse plane joint moments (hip, knee, and ankle) ranged from 0.07 to 2.62 N.m/kg. These small ground reaction forces and joint forces and moments support...
Clinical anatomy and biomechanics of the ankle in dance
2008
Abstract: The ankle is an important joint to understand in the context of dance because it is the connection between the leg and the foot that establishes lower extremity stability. Its function coordinates with the leg and foot and, thus, it is crucial to the dancer's ability to perform. Furthermore, the ankle is one of the most commonly injured body regions in dance.
Measurement of the extreme ankle range of motion required by female ballet dancers
Foot & ankle specialist, 2010
Female ballet dancers require extreme ankle motion, especially plantar flexion, but research about measuring such motion is lacking. The purposes of this study were to determine in a sample of ballet dancers whether non-weight-bearing ankle range of motion is significantly different from the weight-bearing equivalent and whether inclinometric plantar flexion measurement is a suitable substitute for standard plantar flexion goniometry. Fifteen female ballet dancers (5 university, 5 vocational, and 5 professional dancers; age 21 ± 3.0 years) volunteered. Subjects received 5 assessments on 1 ankle: non-weight-bearing goniometry dorsiflexion (NDF) and plantar flexion (NPF), weight-bearing goniometry in the ballet positions demi-plié (WDF) and en pointe (WPF), and non-weight-bearing plantar flexion inclinometry (IPF). Mean NDF was significantly lower than WDF (17° ± 1.3° vs 30° ± 1.8°, P < .001). NPF (77° ± 2.5°) was significantly lower than both WPF (83° ± 2.2°, P = .01) and IPF (89°...
Journal of Sports Sciences, 1998
The energy contribution of the lower extremity joints to vertical jum ping and long jumping from a standing position has previously been investigated. However, the resultant joint moment contributions to vertical and long jumps perform ed with a running approach are unknown. Also, the contribution of the metatarsophalangeal joint to these activities has not been investigated. The objective of this study was to determine the mechanical energy contributions of the hip, knee, ankle and m etatarsophalangeal joints to running long jumps and running vertical jumps. A sagittal plane analysis was performed on ® ve male university basketball players while performing running vertical jumps and four male long jumpers while perform ing running long jumps. The resultant joint moment and power patterns at the ankle, knee and hip were similar to those reported in the literature for standing jumps. It appears that the m ovement pattern of the jum ps is not in¯uenced by an increase in horizontal velocity before take-off. The metatarsophalangeal joint was a large energy absorber and generated only a minimal amount of energy at take-off . The ankle joint was the largest energy generator and absorber for both jumps; however, it played a smaller relative role during long jum ping as the energy contribution of the hip increased.