Postural control during gait termination and prehension
Gait & Posture, ISSN: 0966-6362, Vol: 112, Page: 46-52
2024
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Metrics Details
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Article Description
Challenges to postural stability emerge in the transition from locomotion to a standing posture as during gait termination, often accompanied by another task (e.g., opening a door), which may complicate control. However, less is known about postural control during terminating gait while engaged in a secondary manual task. What are the changes in postural control when terminating gait with and without a prehension task? In a cross-sectional design, 15 healthy young adults (M=8, F=7; 27±2 years; 69±13 kg; 171±8 cm) underwent both a single task gait termination (GTO) and dual task (gait termination plus reaching; GTR). Postural Time-to-Contact (TtC) was measured using Center of Pressure (CoP) and the sternum position in anterior-posterior (AP) and medial-lateral (ML) directions over two different phases: preparatory phase and stabilization phase. Five successful trials were recorded to obtain a mean TtC. For statistical analysis of TtC, a two-tailed paired t -test was used (p =.05) as normality was satisfied. For the preparatory phase, there were no differences for the CoP, but TtC of the sternum position in AP was shorter in GTR than GTO (p =.001). Meanwhile, for the stabilization phase, TtCs of both the CoP and sternum position were longer in GTR in both AP and ML directions (p’s <.001). We suggest that for the preparatory phase, the shorter TtC of the sternum position with intact TtC of the CoP in GTR indicates that healthy young individuals are flexible, in that they smoothly integrate CoP control with the upper body demands required to also perform the prehension task. Meanwhile, for the stabilization phase, the longer TtC in dual termination and prehension task indicates that the perturbation imposed by the prehension movement did not result in reduced stabilization when returning to an upright posture.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0966636224001164; http://dx.doi.org/10.1016/j.gaitpost.2024.04.020; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85192750978&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/38735092; https://linkinghub.elsevier.com/retrieve/pii/S0966636224001164; https://dx.doi.org/10.1016/j.gaitpost.2024.04.020
Elsevier BV
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