Abstract：
:Children with Down syndrome (DS) display less stable and coordinated gait patterns in the time domain than their healthy peers. However, little is known about whether this group difference exists in the frequency domain. The purpose of this study was to investigate differences in vertical ground reaction force (GRF) in the frequency domain between preadolescents with and without DS. Twenty children at 7-10 years of age with and without DS participated in this study. Participants walked on an instrumented treadmill at two speeds with and without external ankle load. Vertical GRF was collected and the data was processed through a Fourier transform. Frequency content variables included fundamental frequency, power of the first five harmonics, and the frequency and number of harmonics at 95%, 99% and 99.5% of total power. Preadolescents with DS had a similar fundamental frequency as their healthy peers even though the DS group walked at slower speeds. The DS group displayed a different power spectrum of the first five harmonics and had the lower frequency and number of harmonics at 99% and 99.5% of total power. However, walking at a faster speed with external ankle load helped the DS group produce a power spectrum more similar to healthy children. Frequency content of vertical GRF provides additional assessment parameters in functional gait evaluation of children with DS. Treadmill intervention at a faster speed and with external ankle load appears to be clinically promising and needs further investigation.
journal_name
Res Dev Disabiljournal_title
Research in developmental disabilitiesauthors
Wu J,Beerse M,Ajisafe Tdoi
10.1016/j.ridd.2014.03.019subject
Has Abstractpub_date
2014-06-01 00:00:00pages
1244-51issue
6eissn
0891-4222issn
1873-3379pii
S0891-4222(14)00111-5journal_volume
35pub_type
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journal_title：Research in developmental disabilities
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journal_title：Research in developmental disabilities
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journal_title：Research in developmental disabilities
pub_type： 杂志文章,随机对照试验
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更新日期：2016-08-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 临床试验,杂志文章
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/j.ridd.2012.12.003
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/0891-4222(91)90015-k
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/s0891-4222(00)00063-9
更新日期：2001-01-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
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更新日期：1999-09-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 临床试验,杂志文章
doi：10.1016/j.ridd.2011.03.026
更新日期：2011-09-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/j.ridd.2016.09.001
更新日期：2016-12-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
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更新日期：1987-01-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章,评审
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更新日期：2002-11-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
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journal_title：Research in developmental disabilities
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pub_type： 杂志文章
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/j.ridd.2008.01.002
更新日期：2009-01-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
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journal_title：Research in developmental disabilities
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journal_title：Research in developmental disabilities
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ridd.2013.06.015
更新日期：2013-10-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/j.ridd.2007.08.004
更新日期：2008-09-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/j.ridd.2014.12.018
更新日期：2015-03-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/j.ridd.2016.02.019
更新日期：2016-06-01 00:00:00
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journal_title：Research in developmental disabilities
pub_type： 杂志文章
doi：10.1016/j.ridd.2018.02.016
更新日期：2018-05-01 00:00:00
