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The effect of nonspecific task constraints on quadrupedal locomotion: II. Joint kinematics

The effect of nonspecific task constraints on quadrupedal locomotion: II. Joint kinematics
The effect of nonspecific task constraints on quadrupedal locomotion: II. Joint kinematics
The effects of directional and postural constraints on preferred speed quadrupedal gait patterns were studied by comparing responses to four hand-foot crawling tasks: forward and backward prone (FP and BP) and forward and backward supine (FS and BS). A central question was whether the task dynamics evident at the end-effector level also appear at the joint effector system level. Timing of reversals in each limb's proximal effector system joints was shown to be related to the functional role (propulsion or reaching) of the limb. Within joints, task constraint changes strongly tended to affect reversal times, and time-reversed directional comparisons tended to show "mirroring" responses. Peak reaching positions were also closely associated with forelimb touchdowns and interlimb coordination. Discussion centers on task function, task dynamics, and their influence on effector system behavior
1087-1640
208-228
Forrester, Larry
f4cb091c-9475-40df-a515-0207765cecf9
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e
Forrester, Larry
f4cb091c-9475-40df-a515-0207765cecf9
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e

Forrester, Larry and Whitall, Jill (1997) The effect of nonspecific task constraints on quadrupedal locomotion: II. Joint kinematics. Motor Control, 1 (3), 208-228.

Record type: Article

Abstract

The effects of directional and postural constraints on preferred speed quadrupedal gait patterns were studied by comparing responses to four hand-foot crawling tasks: forward and backward prone (FP and BP) and forward and backward supine (FS and BS). A central question was whether the task dynamics evident at the end-effector level also appear at the joint effector system level. Timing of reversals in each limb's proximal effector system joints was shown to be related to the functional role (propulsion or reaching) of the limb. Within joints, task constraint changes strongly tended to affect reversal times, and time-reversed directional comparisons tended to show "mirroring" responses. Peak reaching positions were also closely associated with forelimb touchdowns and interlimb coordination. Discussion centers on task function, task dynamics, and their influence on effector system behavior

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Published date: 1997
Organisations: Faculty of Health Sciences

Identifiers

Local EPrints ID: 360774
URI: https://eprints.soton.ac.uk/id/eprint/360774
ISSN: 1087-1640
PURE UUID: 8955286e-945b-45a1-a216-8893ef00b41e

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Date deposited: 20 Dec 2013 15:05
Last modified: 16 Jul 2019 21:15

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Contributors

Author: Larry Forrester
Author: Jill Whitall

University divisions

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