Roongtiwa Vachalathiti, Sunee Bovonsunthonchai, Suthasinee Thong-on, Nattaporn Intawachirarat
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Intra-limb coordination, Obstacle crossing, Cyclogram,Lead limb, Trail limb.
Objective: The aim of the study was to investigate the
intra-limb coordination of the lead limb (LL) and trial
limb (TL) during obstacle crossing over different heights
Methods: Single healthy young female participated in the
study. Obstacle crossing characteristics were collected by
three dimension motion analysis system. Intra-limb
coordination of the lower extremity was plotted with
cyclogram. Three different heights (5-cm, 20-cm, and 30-
cm) of obstacles crossing and no obstacle condition were
performed for assessing the intra-limb coordination
patterns. Cyclograms were illustrated for the relationships
between two and three joint motions. Data were
qualitatively analyzed on illustrations.
Results: Without obstacle, cyclograms demonstrated
almost the same degree of motion for the hip, knee, and
ankle joints between the LL and TL. For obstacle crossing
in different obstacle heights, the hip range of motion was
required for obstacle crossing in the LL more than the TL.
Almost the same degree of knee flexion angle was
necessary for both the LL and TL. Alternated ankle
plantarflexion and dorsiflexion occurred in obstacle
Conclusion: Intra-limb coordination during obstacle
crossing altered following height of the obstacle and
different patterns existed between the LL and TL.