Repeated computerized cognitive testing: Performance shifts and test–retest reliability in healthy young adults.

2018 ◽  
Vol 30 (4) ◽  
pp. 539-549 ◽  
Author(s):  
Naomi White ◽  
Bridget Forsyth ◽  
Amelia Lee ◽  
Liana Machado
Keyword(s):  
Young Adults ◽  
Cognitive Testing ◽  
Retest Reliability ◽  
Testing Performance ◽  
Test Retest Reliability

Test–Retest Reliability and the Effects of Walking Speed on Stride Time Variability During Continuous, Overground Walking in Healthy Young Adults

2020 ◽  
pp. 1-7
Author(s):  
Nicholas S. Ryan ◽  
Paul A. Bruno ◽  
John M. Barden
Keyword(s):  
Young Adults ◽  
Walking Speed ◽  
Time Variability ◽  
Clinical Settings ◽  
Stride Time ◽  
Real Difference ◽  
Overground Walking ◽  
Retest Reliability ◽  
Intraclass Correlations ◽  
Test Retest Reliability

Studies have investigated the reliability and effect of walking speed on stride time variability during walking trials performed on a treadmill. The objective of this study was to investigate the reliability of stride time variability and the effect of walking speed on stride time variability, during continuous, overground walking in healthy young adults. Participants completed: (1) 2 walking trials at their preferred walking speed on 1 day and another trial 2 to 4 days later and (2) 1 trial at their preferred walking speed, 1 trial approximately 20% to 25% faster than their preferred walking speed, and 1 trial approximately 20% to 25% slower than their preferred walking speed on a separate day. Data from a waist-mounted accelerometer were used to determine the consecutive stride times for each trial. The reliability of stride time variability outcomes was generally poor (intraclass correlations: .167–.487). Although some significant differences in stride time variability were found between the preferred walking speed, fast, and slow trials, individual between-trial differences were generally below the estimated minimum difference considered to be a real difference. The development of a protocol to improve the reliability of stride time variability outcomes during continuous, overground walking would be beneficial to improve their application in research and clinical settings.

Adaptation, Test-Retest Reliability, and Construct Validity of the Physical Activity Neighborhood Environment Scale in Nigeria (PANES-N)

2013 ◽  
Vol 10 (8) ◽  
pp. 1079-1090 ◽  
Author(s):  
Adewale L. Oyeyemi ◽  
James F. Sallis ◽  
Adetoyeje Y. Oyeyemi ◽  
Mariam M. Amin ◽  
Ilse De Bourdeaudhuij ◽  
...  
Keyword(s):  
Physical Activity ◽  
Construct Validity ◽  
Intraclass Correlation ◽  
Cognitive Testing ◽  
Neighborhood Environment ◽  
Analysis Of Covariance ◽  
Environmental Perceptions ◽  
Retest Reliability ◽  
Environment Scale ◽  
Test Retest Reliability

Background:This study adapted the Physical Activity Neighborhood Environment Scale (PANES) to the Nigerian context and assessed the test-retest reliability and construct validity of the Nigerian version (PANES-N).Methods:A multidisciplinary panel of experts adapted the original PANES to reflect the built and social environment of Nigeria. The adapted PANES was subjected to cognitive testing and test retest reliability in a diverse sample of Nigerian adults (N = 132) from different neighborhood types. Intraclass Correlation Coefficients (ICC) was used to assess test-retest reliability, and construct validity was investigated with Analysis of Covariance for differences in environmental attributes between neighborhoods.Results:Four of the 17 items on the original PANES were significantly modified, 3 were removed and 2 new items were incorporated into the final version of adapted PANES-N. Test-retest reliability was substantial to almost perfect (ICC = 0.62–1.00) for all items on the PANES-N, and residents of neighborhoods in the inner city reported higher residential density, land use mix and safety, but lower pedestrian facilities and aesthetics than did residents of government reserved area/new layout neighborhoods.Conclusion:The PANES-N appears promising for assessing environmental perceptions related to physical activity in Nigeria, but further testing is required to assess its applicability across Africa.

scholarly journals Reliability and Validity of the Dyskinesia Impairment Scale in Children and Young Adults with Inherited or Idiopathic Dystonia

2020 ◽  
Vol 9 (8) ◽  
pp. 2597
Author(s):  
Annika Danielsson ◽  
Inti Vanmechelen ◽  
Cecilia Lidbeck ◽  
Lena Krumlinde-Sundholm ◽  
Els Ortibus ◽  
...  
Keyword(s):  
Young Adults ◽  
Rating Scale ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Children And Youth ◽  
Rater Reliability ◽  
Retest Reliability ◽  
Children And Young Adults ◽  
Test Retest Reliability ◽  
Idiopathic Dystonia

Background: The Dyskinesia Impairment Scale (DIS) is a new assessment scale for dystonia and choreoathetosis in children and youth with dyskinetic cerebral palsy. Today, the Burke–Fahn–Marsden Dystonia Rating Scale (BFM) is mostly used to assess dystonia in children with inherited dystonia. The aim of this study was to assess reliability and validity of the DIS in children and youth with inherited or idiopathic dystonia. Methods: Reliability was measured by (1) the intraclass correlation coefficients (ICCs) for inter-rater and test-retest reliability, as well as (2) standard error of measurement (SEM) and minimal detectable difference (MDD). For concurrent validity of the DIS-dystonia subscale, the BFM was administered. Results: In total, 11 males and 9 females (median age 16 years and 7 months, range 6 to 24 years) were included. For inter-rater reliability, the ICCs for the DIS total score and the dystonia and choreoathetosis subscale scores were 0.83, 0.87, and 0.71, respectively. For test-retest reliability, the ICCs for the DIS total score and the dystonia and choreoathetosis subscale scores were 0.95, 0.88, and 0.93, respectively. The SEM and MDD for the total DIS were 3.98% and 11.04%, respectively. The Spearman correlation coefficient between the dystonia subscale and the BFM was 0.88 (p < 0.01). Conclusions: Good to excellent inter-rater, test-retest reliability, and validity were found for the total DIS and the dystonia subscale. The choreoathetosis subscale showed moderate inter-rater reliability and excellent test-retest reliability. The DIS may be a promising tool to assess dystonia and choreoathetosis in children and young adults with inherited or idiopathic dystonia.

Consistency of Fundamental Frequency and Perturbation in Repeated Phonations of Sustained Vowels, Reading, and Connected Speech

1990 ◽  
Vol 55 (2) ◽  
pp. 360-363 ◽  
Author(s):  
James L. Fitch
Keyword(s):  
Young Adults ◽  
Correlation Coefficient ◽  
Fundamental Frequency ◽  
Spontaneous Speech ◽  
The Other ◽  
Acoustic Measurement ◽  
Vowel Production ◽  
Connected Speech ◽  
Retest Reliability ◽  
Test Retest Reliability

The purpose of this study was to determine consistency of the acoustic measurement of fundamental frequency (f 0 ) and f 0 perturbation using the Visi-Pitch. Samples of speech including a reading passage, vowels, and spontaneous speech were recorded for 12 normal young adults (6 men and 6 women). The results indicated that test-retest reliability was highest for the reading passage. The measurements of fundamental frequency for reading and spontaneous speech were very similar, but vowel production was, on average, higher in frequency than the other contexts. Test-retest measures of perturbation using the Visi-Pitch did not have a high correlation coefficient. Perturbation measures must be interpreted cautiously because of the influence of frequency.

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