Medical Journal of the Islamic Republic Of Iran
مجله پزشکی جمهوری اسلامی ایران
Med J Islam Repub Iran
Medical Sciences
http://mjiri.iums.ac.ir
2
journal2
1016-1430
2251-6840
8
10.18869/mjiri
14
8888
13
en
jalali
1388
11
1
gregorian
2010
2
1
23
4
online
1
fulltext
en
Test-retest reliability and minimal detectable change for center of pressure measures of postural stability in elderly subjects
Physical Medecine& Rehabilitaion
Physical Medecine& Rehabilitaion
Original Research
Original Research
<p> <strong> Abstract </strong></p><p> <strong> Background: </strong>Postural instability has been identified as a potential precursor of </p><p> falls in elderly subjects. Postural stability in quiet stance is commonly assessed with </p><p> center of pressure (COP) measures. The purpose of this study was to determine testretest reliability and minimal detectable change (MDC) for the center of pressure </p><p> (COP) measures in the elderly subjects. </p><p> <strong> Methods: </strong>Eighteen healthy elderly people over the age of 60 years participated in </p><p> this study. For each subject the COP was recorded during quiet upright stance on different levels of postural difficulty (eyes open versus eyes closed, firm surface versus </p><p> foam surface) and lean condition (forward and backward). All measurements were </p><p> done on two sessions with 7 days interval. These indices: mean velocity, standard deviation of amplitude, standard deviation of velocity, phase plane parameter and area </p><p> (95% confidence ellipse). Intraclass correlation coefficient (ICC), standard error of </p><p> measurement (SEM) and coefficient of variation (CV) were used to quantify testretest </p><p> reliability. The MDC for each measure was calculated to quantify intervention </p><p> effects. </p><p> <strong> Results: </strong>In general, test-retest reliability of COP measures in the elder subjects </p><p> was increased whenever postural difficulty of task increased in quiet standing. In </p><p> standing conditions, mean velocity and phase plane parameter were the most sensitive </p><p> and the most reliable measures. The lean range was the most sensitive and the </p><p> most reliable measure, in the lean conditions. </p><p> <strong> Conclusion: </strong>Center of pressure measures in the quiet standing especially in difficult </p><p> postural conditions demonstrated high sensitivity in the older subjects. These results </p><p> may be useful in quantification and assessment of balance performance and </p><p> treatment efficacy. </p><p> </p>
Reliability, Minimal Detectable Change, Center of Pressure, balance,Elder People
224
232
http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1-95&slc_lang=en&sid=1
Reza
Salehi
Salehi200@yahoo.com
20031947532846001889
20031947532846001889
Yes
School of Rehabilitation Science, Iran University of Medical Science
Ismaeil
Ebrahimi-Takamjani
20031947532846001890
20031947532846001890
No
Iran University of Medical Science, Tehran, Iran.
Ali
Esteki
20031947532846001891
20031947532846001891
No
Shahid beheshti University of Medical Science, Tehran, Iran.
Nader
Maroufi
20031947532846001892
20031947532846001892
No
Iran University of Medical Science, Tehran, Iran.
Mohammad
Parnianpour
20031947532846001893
20031947532846001893
No
Sharif industrial University, Tehran, Iran.