Volitional spine stabilization during a drop vertical jump from different landing heights : implications for anterior cruciate ligament injury
Deutscher übersetzter Titel: | Willkürliche Wirbelsäulenstabilisierung während eines Drop-Vertikalsprungs von verschiedenen Landungshöhen : Auswirkung auf Verletzungen des vorderen Kreuzbandes |
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Autor: | Haddas, Ram; Hooper, Troy; James, C. Roger; Sizer, Phillip S. |
Erschienen in: | Journal of athletic training |
Veröffentlicht: | 51 (2016), 12, S. 1003-1012, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1062-6050, 0160-8320, 1938-162X |
DOI: | 10.4085/1062-6050-51.12.18 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201701000629 |
Quelle: | BISp |
Abstract des Autors
Context: Volitional preemptive abdominal contraction (VPAC) during dynamic activities may alter trunk motion, but the role of the core musculature in positioning the trunk during landing tasks is unclear.
Objective: To determine whether volitional core-muscle activation incorporated during a drop vertical jump alters lower extremity kinematics and kinetics, as well as trunk and lower extremity muscle activity at different landing heights.
Design: Controlled laboratory study.
Setting: Clinical biomechanics laboratory.
Patients or Other Participants: Thirty-two young healthy adults, consisting of 17 men (age = 25.24 ± 2.88 years, height = 1.85 ± 0.06 m, mass = 89.68 ± 16.80 kg) and 15 women (age = 23.93 ± 1.33 years, height = 1.67 ± 0.08 m, mass = 89.68 ± 5.28 kg).
Intervention(s): Core-muscle activation using VPAC.
Main Outcome Measure(s): We collected 3-dimensional ankle, knee, and hip motions, moments, and powers; ground reaction forces; and trunk and lower extremity muscle activity during 0.30- and 0.50-m drop vertical-jump landings.
Results: During landing from a 0.30-m height, VPAC performance increased external oblique and semitendinosis activity, knee flexion, and knee internal rotation and decreased knee-abduction moment and knee-energy absorption. During the 0.50-m landing, the VPAC increased external oblique and semitendinosis activity, knee flexion, and hip flexion and decreased ankle inversion and hip-energy absorption.
Conclusions: The VPAC performance during landing may protect the anterior cruciate ligament during different landing phases from different heights, creating a protective advantage just before ground contact and after the impact phase. Incorporating VPAC during high injury-risk activities may enhance pelvic stability, improve lower extremity positioning and sensorimotor control, and reduce anterior cruciate ligament injury risk while protecting the lumbar spine.