TY  - JOUR
AU  - Pohl, Michael B.
A2  - Pohl, Michael B.
A2  - Kendall, Karen D.
A2  - Patel, Chirag
A2  - Wiley, J. Preston
A2  - Emery, Carolyn
A2  - Ferber, Reed
DB  - BISp
DP  - BISp
KW  - Analyse
KW  - Analyse, biomechanische
KW  - Bewegungskoordination
KW  - Biomechanik
KW  - Hüftbeugemuskulatur
KW  - Hüftbeuger
KW  - Hüftbeugung
KW  - Hüftgelenk
KW  - Kniegelenk
KW  - Koordination
KW  - Muskelaktivität
KW  - Muskelkraft
KW  - Muskelkraft, dynamische
KW  - Sportwissenschaft
KW  - Trainingswissenschaft
KW  - Untersuchung, vergleichende
KW  - Walking
LA  - eng
TI  - Experimentally Reduced Hip-Abductor Muscle Strength and Frontal-Plane Biomechanics During Walking
TT  - Experimentell reduzierte Hüftbeugemuskulaturkraft und Biomechanik der Frontalebene während des Laufens
PY  - 2015
N2  - Context: Researchers have postulated that reduced hip-abductor muscle strength may have a role in the progression of knee osteoarthritis by increasing the external knee-adduction moment. However, the relationship between hip-abductor strength and frontal-plane biomechanics remains unclear. Objective: To experimentally reduce hip-abduction strength and observe the subsequent changes in frontal-plane biomechanics. Design: Descriptive laboratory study. Setting: Research laboratory. Patients or Other Participants: Eight healthy, recreationally active men (age = 27 ± 6 years, height = 1.75 ± 0.11 m, mass = 76.1 ± 10.0 kg). Intervention(s): All participants underwent a superior gluteal nerve block injection to reduce the force output of the hip-abductor muscle group. Main Outcome Measure(s): Maximal isometric hip-abduction strength and gait biomechanical data were collected before and after the injections. Gait biomechanical variables collected during walking consisted of knee- and hip-adduction moments and impulses and the peak angles of contralateral pelvic drop, hip adduction, and ipsilateral trunk lean. Results: Hip-abduction strength was reduced after the injection (P = .001) and remained lower than baseline values at the completion of the postinjection gait data collection (P = .02). No alterations in hip- or knee-adduction moments (hip: P = .11; knee: P = .52) or impulses (hip: P = .16; knee: P = .41) were found after the nerve block. Similarly, no changes in angular kinematics were observed for contralateral pelvic drop (P = .53), ipsilateral trunk lean (P = .78), or hip adduction (P = .48). Conclusions: A short-term reduction in hip-abductor strength was not associated with alterations in the frontal-plane gait biomechanics of young, healthy men. Further research is needed to determine whether a similar relationship is true in older adults with knee osteoarthritis. Verf.-Referat
L2  - http://natajournals.org/doi/pdf/10.4085/1062-6050-49.5.07
L2  - https://dx.doi.org/http://dx.doi.org/10.4085/1062-6050-49.5.07
DO  - http://dx.doi.org/10.4085/1062-6050-49.5.07
SP  - S. 385-391
SN  - 1062-6050
JO  - Journal of athletic training
IS  - 4
VL  - 50
M3  - Elektronische Ressource (online)
M3  - Gedruckte Ressource
ID  - PU201508006295
ER  -