TY - JOUR
T1 - Does Body Postural Configuration Affect Upper Limb Performance During Point-to-Point Hand Movements?
AU - Bauch, Mika Ben David
AU - Baniña, Melanie C.
AU - Liebermann, Dario G.
AU - Friedman, Jason
N1 - Publisher Copyright:
© 2024 The Author(s). Published with license by Taylor & Francis Group, LLC.
PY - 2025
Y1 - 2025
N2 - Adopting a postural configuration may be regarded as preparation for the performance of an upcoming movement. However, it is unclear how different postural configurations affect motor performance. The aim of the current study was to examine how body posture–sitting versus standing–influences fast and accurate planar point-to-point hand movements. Twenty-three healthy adults performed a “Go/No-go” paradigm while doing repetitive point-to-point movements. Arousal levels, which may change due to the change in posture, were independently manipulated by using a sham threat of electrical stimulation. Upper limb kinematics, center of pressure displacement, and galvanic skin responses were recorded in four test conditions: sitting and standing with and without arousal manipulation. Descriptive performance measures were computed and analyzed using multiple analyses of variance. A difference in arousal level was observed in the two conditions with the arousal manipulation, but no difference in arousal level was found between sitting and standing. Center of pressure displacement onset was found to be earlier in the two standing conditions compared to those in sitting. No difference was found in upper limb performance between the two postures, nor due to the arousal manipulation. We concluded that under the tested conditions, body posture does not appear to affect upper limb performance.
AB - Adopting a postural configuration may be regarded as preparation for the performance of an upcoming movement. However, it is unclear how different postural configurations affect motor performance. The aim of the current study was to examine how body posture–sitting versus standing–influences fast and accurate planar point-to-point hand movements. Twenty-three healthy adults performed a “Go/No-go” paradigm while doing repetitive point-to-point movements. Arousal levels, which may change due to the change in posture, were independently manipulated by using a sham threat of electrical stimulation. Upper limb kinematics, center of pressure displacement, and galvanic skin responses were recorded in four test conditions: sitting and standing with and without arousal manipulation. Descriptive performance measures were computed and analyzed using multiple analyses of variance. A difference in arousal level was observed in the two conditions with the arousal manipulation, but no difference in arousal level was found between sitting and standing. Center of pressure displacement onset was found to be earlier in the two standing conditions compared to those in sitting. No difference was found in upper limb performance between the two postures, nor due to the arousal manipulation. We concluded that under the tested conditions, body posture does not appear to affect upper limb performance.
KW - Motor performance
KW - anticipatory postural adjustments
KW - arousal
KW - center of pressure
KW - point-to-point hand movement
KW - sitting
KW - standing
UR - http://www.scopus.com/inward/record.url?scp=85209634059&partnerID=8YFLogxK
U2 - 10.1080/00222895.2024.2416238
DO - 10.1080/00222895.2024.2416238
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AN - SCOPUS:85209634059
SN - 0022-2895
VL - 57
SP - 77
EP - 86
JO - Journal of Motor Behavior
JF - Journal of Motor Behavior
IS - 1
ER -