Sequence of onset latency of body segments when turning on-the-spot in people with stroke
Sequence of onset latency of body segments when turning on-the-spot in people with stroke
Background
Turning around is a common activity of daily living. The location of a target may be known or unknown while angle and direction may vary prior to turning. A stroke can compromise coordination of body movement during turning.
Objectives
To investigate the effect of target predictability, turn angle and turn direction on the kinematic sequence of rotation of body segments in people with stroke and healthy controls when turning on-the-spot.
Methods
Ten people with stroke (age: 66 ± 10 years; 8 males) and 10 age-matched controls (age: 65 ± 8 years; 6 males) were asked to either turn to a specific light (predictable condition) or locate and turn to a random light (unpredictable condition) placed at 45°, 90° or 135° to the right or left when a light in front extinguished.
Results
People with stroke initiated movement of the segments significantly later than the controls (p = 0.014). The sequence of onset of rotation of the segments was not different between both groups. Target predictability affected the sequence of the segments; the eyes, head and shoulder started moving simultaneously when turning to unpredictable targets while the head and shoulder started moving before the eyes when turning to predictable targets. The sequence was also different across the three turn angles for each predictability condition. However, the sequence remained the same when turning to both sides in each group.
Conclusion
Similarities between the groups may be because the time since the stroke was long and therefore some recovery of function may have occurred. Slowness of movement in people with stroke may predispose them to falls.
Turning, Onset latency, Balance, Stroke, Falls
841-846
Ahmad, Rufai
fe848f05-4cc6-4edc-92ee-a18bc50b4069
Ashburn, Ann
818b9ce8-f025-429e-9532-43ee4fd5f991
Samuel, Dinesh
03b00738-9b9c-4c0a-a85a-cf43fc0932fc
Burnett, Malcolm
2c3baa00-d368-4ce7-8a8b-822ea7ebe475
Verheyden, Geert
aabb1bd5-f394-4c82-ba97-7926a4255282
March 2014
Ahmad, Rufai
fe848f05-4cc6-4edc-92ee-a18bc50b4069
Ashburn, Ann
818b9ce8-f025-429e-9532-43ee4fd5f991
Samuel, Dinesh
03b00738-9b9c-4c0a-a85a-cf43fc0932fc
Burnett, Malcolm
2c3baa00-d368-4ce7-8a8b-822ea7ebe475
Verheyden, Geert
aabb1bd5-f394-4c82-ba97-7926a4255282
Ahmad, Rufai, Ashburn, Ann, Samuel, Dinesh, Burnett, Malcolm and Verheyden, Geert
(2014)
Sequence of onset latency of body segments when turning on-the-spot in people with stroke.
Gait & Posture, 39 (3), .
(doi:10.1016/j.gaitpost.2013.11.009).
Abstract
Background
Turning around is a common activity of daily living. The location of a target may be known or unknown while angle and direction may vary prior to turning. A stroke can compromise coordination of body movement during turning.
Objectives
To investigate the effect of target predictability, turn angle and turn direction on the kinematic sequence of rotation of body segments in people with stroke and healthy controls when turning on-the-spot.
Methods
Ten people with stroke (age: 66 ± 10 years; 8 males) and 10 age-matched controls (age: 65 ± 8 years; 6 males) were asked to either turn to a specific light (predictable condition) or locate and turn to a random light (unpredictable condition) placed at 45°, 90° or 135° to the right or left when a light in front extinguished.
Results
People with stroke initiated movement of the segments significantly later than the controls (p = 0.014). The sequence of onset of rotation of the segments was not different between both groups. Target predictability affected the sequence of the segments; the eyes, head and shoulder started moving simultaneously when turning to unpredictable targets while the head and shoulder started moving before the eyes when turning to predictable targets. The sequence was also different across the three turn angles for each predictability condition. However, the sequence remained the same when turning to both sides in each group.
Conclusion
Similarities between the groups may be because the time since the stroke was long and therefore some recovery of function may have occurred. Slowness of movement in people with stroke may predispose them to falls.
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More information
Published date: March 2014
Keywords:
Turning, Onset latency, Balance, Stroke, Falls
Organisations:
Faculty of Health Sciences
Identifiers
Local EPrints ID: 362521
URI: http://eprints.soton.ac.uk/id/eprint/362521
ISSN: 0966-6362
PURE UUID: 10f6dbd8-8103-484e-a40d-e41064dc5aff
Catalogue record
Date deposited: 26 Feb 2014 15:56
Last modified: 17 Apr 2024 01:39
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Contributors
Author:
Rufai Ahmad
Author:
Ann Ashburn
Author:
Geert Verheyden
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