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Temporal coordination of the arms during bilateral simultaneous and sequential movements in patients with chronic hemiparesis

Temporal coordination of the arms during bilateral simultaneous and sequential movements in patients with chronic hemiparesis
Temporal coordination of the arms during bilateral simultaneous and sequential movements in patients with chronic hemiparesis
Upper extremity (UE) hemiparesis results in decreased movement speed and impaired coordination leading to functional limitations and disability. The effects of UE hemiparesis on bilateral functional reaching have not been studied even though most activities of daily living are bilateral tasks. We examined the characteristics of bilateral simultaneous (SIM-B) and bilateral sequential paretic-lead (SEQ-P) and nonparetic-lead (SEQ-NP) functional reaching tasks at preferred and fast speeds. Sixteen patients with chronic hemiparesis completed three bilateral reaching tasks as fast as possible. A subset of eight participants attempted to complete the tasks at both preferred and fastest possible speeds. Paretic (P) and nonparetic (NP) arms were not different from each other in movement time (MT) or peak velocity in the SIM-B condition. MT and peak velocity differed between the two arms during both SEQ tasks. P MT was shorter and NP MT longer in the SIM-B task compared to SEQ-P and SEQ-NP. The P arm MT was the shortest when moving with the NP arm in a simultaneous task compared to both P and NP lead sequential movements. Despite hemiparesis, the two arms demonstrate a temporal coupling when moving simultaneously. When attempting to move at fastest speed, P arm MT time is better when reaching before or with the NP arm than when reaching after the NP arm showing coupling to the NP limb and increased speed of movement. These coupling effects support the rationale for bilateral arm training for individuals with UE hemiparesis
0014-4819
450-454
Waller, Sandy McCombe
380903ac-3e09-4e79-a9c6-e8f0fee6f9a5
Harris-Love, Michelle
685cb898-4679-4146-84cd-6af8789ca7eb
Liu, Wei
a14d7956-a55e-4e3c-aa61-2d368c7498a1
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e
Waller, Sandy McCombe
380903ac-3e09-4e79-a9c6-e8f0fee6f9a5
Harris-Love, Michelle
685cb898-4679-4146-84cd-6af8789ca7eb
Liu, Wei
a14d7956-a55e-4e3c-aa61-2d368c7498a1
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e

Waller, Sandy McCombe, Harris-Love, Michelle, Liu, Wei and Whitall, Jill (2006) Temporal coordination of the arms during bilateral simultaneous and sequential movements in patients with chronic hemiparesis. Experimental Brain Research, 168 (3), 450-454. (doi:10.1007/s00221-005-0235-3). (PMID:16331507)

Record type: Article

Abstract

Upper extremity (UE) hemiparesis results in decreased movement speed and impaired coordination leading to functional limitations and disability. The effects of UE hemiparesis on bilateral functional reaching have not been studied even though most activities of daily living are bilateral tasks. We examined the characteristics of bilateral simultaneous (SIM-B) and bilateral sequential paretic-lead (SEQ-P) and nonparetic-lead (SEQ-NP) functional reaching tasks at preferred and fast speeds. Sixteen patients with chronic hemiparesis completed three bilateral reaching tasks as fast as possible. A subset of eight participants attempted to complete the tasks at both preferred and fastest possible speeds. Paretic (P) and nonparetic (NP) arms were not different from each other in movement time (MT) or peak velocity in the SIM-B condition. MT and peak velocity differed between the two arms during both SEQ tasks. P MT was shorter and NP MT longer in the SIM-B task compared to SEQ-P and SEQ-NP. The P arm MT was the shortest when moving with the NP arm in a simultaneous task compared to both P and NP lead sequential movements. Despite hemiparesis, the two arms demonstrate a temporal coupling when moving simultaneously. When attempting to move at fastest speed, P arm MT time is better when reaching before or with the NP arm than when reaching after the NP arm showing coupling to the NP limb and increased speed of movement. These coupling effects support the rationale for bilateral arm training for individuals with UE hemiparesis

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Published date: 2006
Organisations: Faculty of Health Sciences

Identifiers

Local EPrints ID: 361951
URI: http://eprints.soton.ac.uk/id/eprint/361951
ISSN: 0014-4819
PURE UUID: 2cac8888-424e-4c25-b5ff-6a3e485e8167

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Date deposited: 06 Feb 2014 13:01
Last modified: 16 Jul 2019 21:12

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