Characteristics of contact force and muscle activation during choreographed falls with 2 common landing techniques in contemporary dance

This study investigated the contact forces and muscle activation during 2 choreographed fall techniques in contemporary dancers and how these were affected by the fall technique. Ten collegiate-level dancers were instructed in 2 choreographed falls: (1) an anteriorly focused fall involving ankle plantar flexion, knee flexion, and hip flexion with dispersion of forces up the anterior surface of the shank (technique 1) and (2) a laterally focused fall involving inversion at the ankle with dispersion of forces up the lateral aspect of the shank (technique 2). The knee and hip contact forces were 26.3% smaller (technique 1: 1743 N vs technique 2: 1284 N) and 24.1% greater (technique 1: 1334 N vs technique 2: 1656 N), respectively, in technique 2 (P<.03). At the time of knee contact, percentage of maximal voluntary isometric contraction (%MVIC) was 45.8% greater for rectus femoris muscle (technique 1: 7.2% vs technique 2: 10.5%) and 96.9% greater for gluteus medius muscle (technique 1: 3.2% vs technique 2: 6.3%) (P<.01) in technique 2. The results provide insight into determining safer landing strategies to avoid knee injuries in individuals who experience a fall (ie, dancers, athletes, and older adults).
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Aiheet: liike biomekaniikka voima, vahvuus tanssi lihas laskeutuminen
Aihealueet: tekniset lajit tekniset ja luonnontieteet
Tagging: Choreografie
DOI: 10.1123/jab.2018-0081
Julkaisussa: Journal of Applied Biomechanics
Julkaistu: 2019
Vuosikerta: 35
Numero: 4
Sivuja: 256-262
Julkaisutyypit: artikkeli
Kieli: englanti (kieli)
Taso: kehittynyt