HapticV1, Main, Exploration, bibRecord, 000A81

Body balance under ametropic conditions induced by spherical lenses in an upright position

Identifieur interne : 000A81 ( Main/Exploration ); précédent : 000A80; suivant : 000A82

Body balance under ametropic conditions induced by spherical lenses in an upright position

Auteurs : Sang-Yeob Kim ; Byeong-Yeon Moon ; Hyun Gug Cho

Source :

Journal of Physical Therapy Science [ 0915-5287 ] ; 2015.

RBID : PMC:4395676

Abstract

[Purpose] To investigate the changes in body balance under ametropic conditions induced by spherical lenses in an upright position. [Subjects and Methods] Twenty subjects (10 males, 10 females) of average age 23.4±2.70 years participated and they were fully corrected by subjective refraction. To induce ametropic conditions (binocular myopia and hyperopia), lenses of ±0.50 D, ±1.00 D, ±1.50 D, ±2.00 D, ±3.00 D, ±4.00 D and ±5.00 D were used. General stability (ST), fall risk index (FI), and sway path (SP) were analyzed through changes in synchronization of left/right and toe/heel, as measured by the biofeedback system, TETRAX. Measurement was performed for 32 seconds for each condition. [Results] ST increased significantly from +0.50 D-induced myopia and from −1.00 D-induced hyperopia as compared with corrected emmetropia. FI increased significantly from +4.00 D-induced myopia and from −1.50 D-induced hyperopia as compared with corrected emmetropia. In SP, which means a change of body balance, toe/heel was significantly greater than left/right in all ametropic conditions. SP of right/left synchronization was not affected by the side of the dominant eye. [Conclusion] An uncorrected hyperope may cause subjects to have a higher risk of falling than an uncorrected myope. Therefore, clinical specialists should consider the refractive condition, especially hyperopia, when analyzing body balance.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4395676

DOI: 10.1589/jpts.27.615
PubMed: 25931692
PubMed Central: 4395676

Affiliations:

Le document en format XML

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<author><name sortKey="Kim, Sang Yeob" sort="Kim, Sang Yeob" uniqKey="Kim S" first="Sang-Yeob" last="Kim">Sang-Yeob Kim</name>
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<author><name sortKey="Moon, Byeong Yeon" sort="Moon, Byeong Yeon" uniqKey="Moon B" first="Byeong-Yeon" last="Moon">Byeong-Yeon Moon</name>
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<front><div type="abstract" xml:lang="en"><p>[Purpose] To investigate the changes in body balance under ametropic conditions induced
by spherical lenses in an upright position. [Subjects and Methods] Twenty subjects (10
males, 10 females) of average age 23.4±2.70 years participated and they were fully
corrected by subjective refraction. To induce ametropic conditions (binocular myopia and
hyperopia), lenses of ±0.50 D, ±1.00 D, ±1.50 D, ±2.00 D, ±3.00 D, ±4.00 D and ±5.00 D
were used. General stability (ST), fall risk index (FI), and sway path (SP) were analyzed
through changes in synchronization of left/right and toe/heel, as measured by the
biofeedback system, TETRAX. Measurement was performed for 32 seconds for each condition.
[Results] ST increased significantly from +0.50 D-induced myopia and from −1.00 D-induced
hyperopia as compared with corrected emmetropia. FI increased significantly from +4.00
D-induced myopia and from −1.50 D-induced hyperopia as compared with corrected emmetropia.
In SP, which means a change of body balance, toe/heel was significantly greater than
left/right in all ametropic conditions. SP of right/left synchronization was not affected
by the side of the dominant eye. [Conclusion] An uncorrected hyperope may cause subjects
to have a higher risk of falling than an uncorrected myope. Therefore, clinical
specialists should consider the refractive condition, especially hyperopia, when analyzing
body balance.</p>
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Body balance under ametropic conditions induced by spherical lenses in an upright position

Body balance under ametropic conditions induced by spherical lenses in an upright position

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Abstract

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