Vol.1, No 10, 2003 pp. 33 - 41
UDC 796.86 : 421
Scientific Paper
GAIT PATTERN OF PROFESSIONAL FENCERS
Zsidai Knoll1, Rita M. Kiss2
1MEDICaMENTOR Foundation, 1021 Budapest,
Pálos u. 3., Hungary
2Academic Research Group of Structures,
1521 Budapest, Bertalan L. u. 2., Hungary
* email: kiss@vbt.bme.hu
Abstract. This study used a comprehensive approach including kinematic
and EMG data analysis to determine how normal gait patterns may change
as a result of professional non-cyclical sport activity and to determine
the electromyographical pattern of m. adductor longus. The study was performed
on 37 professional fencers and 68 healthy non-professional subjects as
the control group. Gait analysis was performed using the zebris three-dimensional
ultrasound-based system with surface electromyography (zebris). Kinematic
data (spatial-temporal parameters, knee joint kinematics and relative ligament-movement
parameter) were recorded for the lower limb. The muscles examined include
vastus lateralis and medialis, biceps femoris and adductor longus. Analysis
of the values of professional and non-professional subjects shows that
the influence of well - proportioned muscles is not due to a reduction
of muscle activity during all-day motion, but rather a more complex neuromuscular
mechanism, which brings about effectiveness in gait and a joint stability.
The EMG traces of m. adductor longus show an adductor longus avoidance
gait for a small part of subjects, which does not depend on gender, age,
and sport activity level. The results suggest that the reduced rotation
of thigh could result in a reduced rise in adductor longus EMG activity
during preswing.
Key words: gait analysis, 3D kinematics, electromyograph.
MODEL HODA KOD PROFESIONALNIH MAČEVALACA
U studiji je korišćen razumni pristup uključujući kinematičke i EMG podatke
analize da se utvrdi kako normalan obrazac (model) hoda može promeniti
rezultat profesionalnih necikličnih sportskih aktivnosti i da se utvrde
elektromiografski obrasci m.adductor longus-a. Ova studija je izvedena
na 37 profesionalnih mačevalaca i 68 zdravih nesportista, kao kontrolna
grupa. Analiza hoda izvedena je korišćenjem "zabris" trodimenzionalnim
sistemom baziranim na ultrazvuku sa površinom elektromiograma ("zebris).
Kinematički podaci (prostorno-vremenski parametri, kinematika zgloba kolena
i relativan parametar pokreta (ligamenta) bili su beležene za donji ekstremitet.
Pregledani su mišići: vastus lateralis i medialis, biceps femoris i adductor
longus. Analiza vrednosti profesionalnih i neprofesionalnih subjekata pokazuje
da dobro proporcionalni mišići ne utiču na redukciju mišićne aktivnosti
tokom celo-dnevnog kretanja, već više kompleksan neuro-mišićni mehanizam
koji dovodi do veće efektivnosti u hodu i stabilnosti zgloba. EMG skica
m adductor longusa pokazuje izbegavanje adductor longusa kod hoda malog
broja subjekata, što ne zavisi od pola, godišta i nivoa sportske aktivnosti.
Rezultat sugeriše da smanjena rotacija bedra može rezultirati smanjenim
podizanjem EMG aktivnosti kod adductor longusa pre zamaha.
Ključne reči: analiza hoda, 3D kinematika, elektromiografija.
