PMID- 23532337
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20130328
LR  - 20211021
IS  - 1662-5145 (Print)
IS  - 1662-5145 (Electronic)
IS  - 1662-5145 (Linking)
VI  - 7
DP  - 2013
TI  - Two-legged hopping in autism spectrum disorders.
PG  - 14
LID - 10.3389/fnint.2013.00014 [doi]
LID - 14
AB  - Sensory processing deficits are common within autism spectrum disorders (ASD). 
      Deficits have a heterogeneous dispersion across the spectrum and multimodal 
      processing tasks are thought to magnify integration difficulties. Two-legged 
      hopping in place in sync with an auditory cue (2.3, 3.0 Hz) was studied in a 
      group of six individuals with expressive language impaired ASD (ELI-ASD) and an 
      age-matched control group. Vertical ground reaction force data were collected and 
      discrete Fourier transforms were utilized to determine dominant hopping cadence. 
      Effective leg stiffness was computed through a mass-spring model representation. 
      The ELI-ASD group were unsuccessful in matching their hopping cadence (2.21 +/- 
      0.30 hops.s(-1), 2.35 +/- 0.41 hops.s(-1)) to either auditory cue with greater 
      deviations at the 3.0 Hz cue. In contrast, the control group was able to match 
      hopping cadence (2.35 +/- 0.06 hops.s(-1), 3.02 +/- 0.10 hops.s(-1)) to either cue 
      via an adjustment of effective leg stiffness. The ELI-ASD group demonstrated a 
      varied response with an interquartile range (IQR) in excess of 0.5 hops.s(-1) as 
      compared to the control group with an IQR < 0.03 hops.s(-1). Several sensorimotor 
      mechanisms could explain the inability of participants with ELI-ASD to modulate 
      motor output to match an external auditory cue. These results suggest that a 
      multimodal gross motor task can (1) discriminate performance among a group of 
      individuals with severe autism, and (2) could be a useful quantitative tool for 
      evaluating motor performance in individuals with ASD individuals.
FAU - Moran, Matthew F
AU  - Moran MF
AD  - Department of Physical Therapy and Human Movement Science, Sacred Heart 
      University Fairfield, CT, USA.
FAU - Foley, John T
AU  - Foley JT
FAU - Parker, Mary E
AU  - Parker ME
FAU - Weiss, Michael J
AU  - Weiss MJ
LA  - eng
PT  - Journal Article
DEP - 20130326
PL  - Switzerland
TA  - Front Integr Neurosci
JT  - Frontiers in integrative neuroscience
JID - 101477950
PMC - PMC3607741
OTO - NOTNLM
OT  - autism spectrum disorder
OT  - motor control
OT  - proprioception
OT  - sensory processing
OT  - stiffness
EDAT- 2013/03/28 06:00
MHDA- 2013/03/28 06:01
PMCR- 2013/01/01
CRDT- 2013/03/28 06:00
PHST- 2012/10/29 00:00 [received]
PHST- 2013/03/06 00:00 [accepted]
PHST- 2013/03/28 06:00 [entrez]
PHST- 2013/03/28 06:00 [pubmed]
PHST- 2013/03/28 06:01 [medline]
PHST- 2013/01/01 00:00 [pmc-release]
AID - 10.3389/fnint.2013.00014 [doi]
PST - epublish
SO  - Front Integr Neurosci. 2013 Mar 26;7:14. doi: 10.3389/fnint.2013.00014. 
      eCollection 2013.