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Gepubliceerd in: Journal of Foot and Ankle Research 1/2014

Open Access 01-04-2014 | Meeting abstract

The effect of cognitive task on ankle movement variability in athletes with Functional Ankle Instability

Auteurs: Sanam Tavakoli, Saeed Forghany, Christopher Nester, Akram Jamali, Khadijeh Bapirzadeh

Gepubliceerd in: Journal of Foot and Ankle Research | bijlage 1/2014

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Competing interests

Nester declares a personal commercial interest in the insoles tested in this study.

Background

Gait has been generally viewed as a largely automated motor task, requiring minimal higher-level cognitive input. Increasing evidence, however, suggest that attention demanding cognitive tasks to disturb gait[1, 2]. Movement variability may influence joint stability and increase the risk of “giving way” at the ankle in individuals with functional ankle instability (FAI)[3]. The purpose of this study was to investigate the effect of dual-tasking on ankle movement variability in athletes with FAI.

Methods

21 athletes (age 25.57±4.77 years) with clinically diagnosed FAI were recruited. All participants completed 5 trials of normal walking and 5 trials of normal walking while performing a cognitive task. The cognitive task consisted of subtracting seven from a randomly selected number between 11 and 99 repeatedly whilst walking. Three dimensional rotations of the affected ankle (measured by an eight-camera motion capture system at 100 Hz) were calculated by visual3D during gait cycles. Between trials variability of ankle rotations time curves during stance phase and during 200ms before and after heel strike were calculated using the coefficient of multiple correlations (CMC) and intraclass correlation (ICC)

Results

The results indicate that mean CMC was decreased during dual task condition in the sagittal and frontal planes. This was statistically significant in frontal plane during 200ms before and after heel strike (p<0.05) (Table 1). There was reduction in ICC magnitude in dual-task condition compared to single task in 200ms before heel strike (Table 2).
Table 1
Mean CMC during different conditions and periods of time.
  
Single-Task
Dual-Task
200ms before and after HSa
Frontal plane
0.9529±0.029
0.9270±0.044 *
 
Sagittal plane
0.9505±0.042
0.9373±0.046
 
Transverse plane
0.8530±0.150
0.8539±0.140
HS-TOb
Frontal plane
0.9396±0.042
0.91150.092
 
Sagittal plane
0.9842±0.019
0.9825±0.022
 
Transverse plane
0.9228±0.092
0.9274±0.072
a Heel strike. b Toe off. * P <0.05
Table 2
ICC in 3planes during different conditions
  
Single-Task
Dual-Task
200ms before HS a
Frontal plane
0.964
0.960
 
Sagittal plane
0.943
0.710
 
Transverse plane
0.934
0.914
HS
Frontal plane
0.968
0.975
 
Sagittal plane
0.879
0.907
 
Transverse plane
0.756
0.908
200ms after HS
Frontal plane
0.958
0.909
 
Sagittal plane
0.950
0.949
 
Transverse plane
0.809
0.973
TO b
Frontal plane
0.911
0.930
 
Sagittal plane
0.882
0.898
 
Transverse plane
0.924
0.903
a Heel strike. b Toe off. * P <0.05

Conclusion

The athletes with FAI demonstrated greater ankle movement variability during dual task condition which may indicate diminished neuromotor control. Cognitive load may increase episodes of ankle instability in these athletes.
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
The Creative Commons Public Domain Dedication waiver (https://​creativecommons.​org/​publicdomain/​zero/​1.​0/​) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

Competing interests

Nester declares a personal commercial interest in the insoles tested in this study.
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Literatuur
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go back to reference Abbud GA, Li KZ, DeMont RG: Attentional requirements of walking according to the gait phase and onset of auditory stimuli. Gait & posture. 2009, 30 (2): 227-32. 10.1016/j.gaitpost.2009.05.013.CrossRef Abbud GA, Li KZ, DeMont RG: Attentional requirements of walking according to the gait phase and onset of auditory stimuli. Gait & posture. 2009, 30 (2): 227-32. 10.1016/j.gaitpost.2009.05.013.CrossRef
2.
go back to reference Al-Yahya E, Dawes H, Smith L, Dennis A, Howells K, Cockburn J: Cognitive motor interference while walking: a systematic review and meta-analysis. Neuroscience and biobehavioral reviews. 2011, 35 (3): 715-28. 10.1016/j.neubiorev.2010.08.008.CrossRefPubMed Al-Yahya E, Dawes H, Smith L, Dennis A, Howells K, Cockburn J: Cognitive motor interference while walking: a systematic review and meta-analysis. Neuroscience and biobehavioral reviews. 2011, 35 (3): 715-28. 10.1016/j.neubiorev.2010.08.008.CrossRefPubMed
3.
go back to reference Brown CN, Padua DA, Marshall SW, Guskiewicz KM: Variability of motion in individuals with mechanical or functional ankle instability during a stop jump maneuver. Clinical biomechanics. 2009, Bristol, Avon, 24 (9): 762-8. 10.1016/j.clinbiomech.2009.07.001. Brown CN, Padua DA, Marshall SW, Guskiewicz KM: Variability of motion in individuals with mechanical or functional ankle instability during a stop jump maneuver. Clinical biomechanics. 2009, Bristol, Avon, 24 (9): 762-8. 10.1016/j.clinbiomech.2009.07.001.
Metagegevens
Titel
The effect of cognitive task on ankle movement variability in athletes with Functional Ankle Instability
Auteurs
Sanam Tavakoli
Saeed Forghany
Christopher Nester
Akram Jamali
Khadijeh Bapirzadeh
Publicatiedatum
01-04-2014
Uitgeverij
BioMed Central
Gepubliceerd in
Journal of Foot and Ankle Research / Uitgave bijlage 1/2014
Elektronisch ISSN: 1757-1146
DOI
https://doi.org/10.1186/1757-1146-7-S1-A90

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