Comparison of Landing Biomechanics Between Male and Female Professional Dancers

Orishimo, Karl F.; Kremenic, Ian J.; Pappas, Evangelos; Hagins, Marshall; Liederbach, Marijeanne

doi:10.1177/0363546509339365

Cited by 97 publications

(99 citation statements)

References 26 publications

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“…17 The fact that the increase in the relative proportion of knee injury corresponded with the start of the dancers' pubertal spurt suggests 2 possible explanations. First, the girls who do not yet have adequate experience in attaining proper balance and landing techniques are now much heavier 18 and are exposed to more repetitive jumping and landing exercises than are young dancers. 19 Furthermore, adolescent dancers are required to perform strenuous exercises that may place exaggerated forces on the medial aspect of the knee.…”

Section: Discussionmentioning

confidence: 99%

“…3 Second, incorrect technique may be a causative factor. Orishimo et al 18 explained that in most nonprofessional dancers, the knees tend to assume a valgus position during landing (accompanied by hip adduction). Conversely, mature professional dancers use their strong hip and knee joint muscles to produce an external moment toward the opposite direction in an attempt to reach a neutral or varus position during landing.…”

Section: Discussionmentioning

confidence: 99%

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Injuries in Female Dancers Aged 8 to 16 Years

Steinberg

Siev-Ner

Peleg

et al. 2013

Journal of Athletic Training

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Context: Most studies of injured dancers have been carried out on professional adult dancers; data on young, nonprofessional injured dancers are sparse.Objective: To identify the types of injuries sustained by recreational dancers and to examine their association with age, joint range of motion, body structure, age at menarche, presence of anatomic anomalies, and physical burden (ie, practice hours en pointe).Design: Descriptive epidemiology study. Setting: The Israel Performing Arts Medicine Center, Tel Aviv.Patients or Other Participants: A total of 569 injured female dancers, aged 8 to 16 years.Main Outcome Measure(s): Dependent variables were 61 types of current injuries that were later classified into 4 major categories: knee injuries, foot and ankle tendinopathy, back injuries, and other injuries. Independent variables were age, joint range of motion, body size and shape, age at menarche, anatomic anomalies, and dance discipline (eg, hours of practice per week en pointe).Results: At least 1 previous injury had been sustained by 42.4% of the dancers. The most common injuries involved the knee (40.4%), followed by other injuries (23.4%). The relative frequency of back injuries and tendinopathy decreased with age, whereas knee injuries increased. Types of injuries were significantly associated with ankle plantar flexion, hip external rotation, hip abduction, and knee flexion. Multinomial regression analysis revealed only 3 predictive variables (with other as baseline), all for back injury: scoliosis, age, and hip external rotation.Conclusions: Joint range of motion and scoliosis may signal the potential for future injury. Young dancers (less than 10 years of age) should not be exposed to overload (especially of the back) or extensive stretching exercises.Key Words: athletes, children, practice time, scoliosis, body mass index, range of motion Key PointsIn this group of young, injured dancers, nearly half had experienced at least 1 previous injury. The most common injuries affected the knee, and knee injuries increased with age, whereas ankle and foot tendinopathy and back injuries decreased with age. Scoliosis, age, and hip external rotation were predictive of back injury.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Injuries in Female Dancers Aged 8 to 16 Years

Steinberg

Siev-Ner

Peleg

et al. 2013

Journal of Athletic Training

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“…The knee is exposed to considerable stress in dance, such as in eccentric loading following repetitive landings. An inefficient distribution of force throughout the foot, transverse plane rotation of the lower limb, and inadequate experience in proper balance and landing technique have been cited as probable causes of knee injuries (Liederbach, 2000;Orishimo, Kremenic, Pappas, Hagins, & Liederbach, 2009). The turnout position required at the foot may also place exaggerated forces on the medial aspect of the knee (Hamilton et al, 2006;Stretanski & Weber, 2002).…”

Section: Discussionmentioning

confidence: 99%

Injury patterns in young, non-professional dancers

Steinberg

Siev-Ner

Peleg

et al. 2011

Journal of Sports Sciences

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The aim of the present study was to assess the prevalence and types of injuries in 1336 young, non-professional female dancers (age 8-16 years) who participated in a descriptive mixed (cross-sectional/ longitudinal) cohort study. Previous and current injuries were diagnosed and later classified into seven major categories. Our results show that 569 (42.6%) of the dancers examined manifested an injury. Advanced age and increased exposure to dance yielded an equivalent increase in the prevalence of injured girls: from 1 of 10 girls in the 8-year-old age cohort (mean = 1.05 per 1000 h) to 1 of 3 girls in the 14-year-old age cohort (mean = 1.25 per 1000 h). Time elapsing between first and second injuries decreased with age. Among the youngest group of dancers (8-9 years) the most common injury was tendonitis (41%), while in adolescent dancers (14-16 years) knee injuries became the leading cause of complaints (33%). We conclude that young, non-professional dancers are at high risk of injury. Dancers who had been injured in the past were at higher risk for re-injury. Tendonitis in the foot or ankle joint was a common injury among the youngest dancers, while knee injuries were common among adolescent dancers. A routine screening of this dancer population by an expert in dance medicine will reduce the risk for an injury.

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“…142 Wan-Ki Hong · Do-Eun Kim (Orishimo, Kremenic, Pappas, Hagins, & Liederbach, 2009). 점프 후 착지 시 하지 상해는 이미 많은 선행연구에서 그 위험성을 제시하고 있다 (Lim, 2007;Dufek, & Bates, 1990;Kovacs et al, 1999;Olney & Richards, 1996;McNitt-Gray, 1991).…”

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Analysis on Biomechanical Differences in Lower Limbs Caused by Increasing Heart Rates During Drop-landing

Hong¹,

Kim²

2015

Korean Journal of Sport Biomechanics

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Objective : This study aimed to understand how increased heart rates at the time of drop landing during a step test would affect biomechanical variables of the lower extremity limbs. Background : Ballet performers do more than 200 landings in a daily training. This training raises the heart rate and the fatigability of the lower extremity limbs. Ballet performance high heart rate can trigger lower extremity limb injury.Method : We instructed eight female ballet dancers with no instability in their ankle joints(mean ± SD: age, 20.7 ± 0.7 yr; body mass index, 19.5 ± 1.2 kg/m2, career duration, 8.7± 2.0 yr) to perform the drop landing under the following conditions: rest, 60% heart rate reserve (HRR) and 80% HRR.Results : First, the study confirmed that the increased heart rates of the female ballet dancers did not affect the working ranges of the knee joints during drop landing but only increased angular speeds, which was considered a negative shock-absorption strategy. Second, 80% HRR, which was increased through the step tests, led to severe fatigue among the female ballet dancers, which made them unable to perform a lower extremity limb-neutral position. Hence, their drop landing was unstable, with increased introversion and extroversion moments. Third, we observed that the increasing 80% HRR failed to help the dancers effectively control ground reaction forces but improved the muscular activities of the rectus femoris and vastus medialis oblique muscles. Fourth, the increasing heart rates were positively related to the muscular activities of the vastus medialis oblique and rectus femoris muscles, and the extroversion and introversion moments. Conclusion/Application : Our results prove that increased HRR during a step test negatively affects the biomechanical variables of the lower extremity limbs at the time of drop landing.

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Comparison of Landing Biomechanics Between Male and Female Professional Dancers

Cited by 97 publications

References 26 publications

Injuries in Female Dancers Aged 8 to 16 Years

Injuries in Female Dancers Aged 8 to 16 Years

Injury patterns in young, non-professional dancers

Analysis on Biomechanical Differences in Lower Limbs Caused by Increasing Heart Rates During Drop-landing

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