changeable velocities and can be used for measurement of agonist–antagonist strength. 8 In literature, there are some studies that have used isokinetic dynamometers for wrist strength measurement. 9 – 11 However, the number of the studies regarding test–retest reliability of isokinetic dynamometer is
Barıs Seven, Gamze Cobanoglu, Deran Oskay and Nevin Atalay-Guzel
Antonio Dello Iacono, Stephanie Valentin, Mark Sanderson and Israel Halperin
a strain gauge. This test does not depend on a force plate, can be easily administered without a complex setup, and assesses the horizontal forces component. Our aims were to examine the test–retest reliability of the IHPT PF outputs across 2 days and establish criterion validity by comparing the
Brendan T. O’Keeffe, Alan E. Donnelly and Ciaran MacDonncha
analyzed on the log-transformed scale ( 7 ). The test–retest reliability of measures taken on both groups was explored using relative and absolute indices, and the results were then compared. Paired samples t tests (Wilcoxon signed-rank tests for nonparametric data) were used to determine systematic bias
Gemma N. Parry, Lee C. Herrington and Ian G. Horsley
the reliability of CMPU as a testing protocol for upper-limb performance. The aim of this study, therefore, was to investigate the test–retest reliability of force plate–derived measures of CMPU in active males. A secondary aim was to explore the SDD that occurred between trials for meaningful changes
Byron L. Zamboanga, Nathan T. Kearns, Janine V. Olthuis, Heidemarie Blumenthal and Renee M. Cloutier
key properties, such as test-retest reliability, have yet to be addressed. A preliminary test of the prospective stability of the recently established 7-factors/motives was thus the first aim of the current study. Elevated alcohol consumption is prevalent during emerging adulthood ( Andrews & Westling
Ann Forsyth, J. Michael Oakes and Kathryn H. Schmitz
The Twin Cities Walking Study measured the associations of built environment versus socioeconomic and psychosocial variables with total physical activity and walking for 716 adults.
This article reports on the test–retest reliability of the survey portion of the study. To test the reliability of the study measures, 158 respondents completed measures twice within 1 to 4 weeks. Agreement between participants’ responses was measured using Pearson r and Spearman rho, and kappa statistics.
Demographic questions are highly reliable (R > .8). Questions about environmental and social features are typically less reliable (rho range = 0.42– 0.91). Reliability of the International Physical Activity Questionnaire (last 7 days version) was low (rho = 0.15 for total activity).
Much of the survey has acceptable-to-good reliability. The low test–retest reliability points to potential limitations of using a single administration of the IPAQ to characterize habitual physical activity. Implications for sound inference are accordingly complicated.
Michael D. Ross and Elizabeth G. Fontenot
The standing heel-rise test has been recommended as a means of assessing calf-muscle performance. To the authors' knowledge, the reliability of the test using intraclass correlation coefficients (ICCs) has not been reported.
To determine the test-retest reliability of the standing heel-rise test.
Single-group repeated measures.
Seventeen healthy subjects.
Settings and Infevention:
Each subject was asked to perform as many standing heel raises as possible during 2 testing sessions separated by 7 days.
Main Outcome Measures:
Reliability data for the standing heel-rise test were studied through a repeated-measures analysis of variance, ICC2, 1 and SEMs.
The ICC2,1 and SEM values for the standing heel-rise test were .96 and 2.07 repetitions, respectively.
The standing heel-rise test offers clinicians a reliable assessment of calfmuscle performance. Further study is necessary to determine the ability of the standing heel-rise test to detect functional deficiencies in patients recovering from lower leg injury or surgery
Robert C. Manske, Barbara Smith and Frank Wyatt
Athletes are often examined for return to sports using a functional-testing algorithm. No research has determined whether a closed kinetic chain (CKC) isokinetic testing bout influences the reliability of functional tests.
To determine whether a concentric CKC isokinetic test bout alters test–retest reliability of lower extremity functional testing.
Subjects participated in velocity-spectrum CKC isokinetic bouts on 2 days 1 week apart.
28 normal subjects (mean age 26.7 years, height 27.2 cm, weight 75.8 kg).
Analysis and Results:
Means and SDs were determined. Intraclass correlation coefficients were used to calculate test–retest reliability and between days 1 and 2 ranged from .91 to .98.
Even after a CKC isokinetic test bout, test–retest reliability of functional tests is very high. Future research should determine test–retest reliability of functional tests for patients with lower extremity pathology.
Todd G. Goldbeck and George J. Davies
Functional testing of patients is essential to clinicians because it provides objective data for documentation that can be used for serial reassessment and progression through a rehabilitation program. Furthermore, new tests should require minimal time, space, and money to implement.
To determine the test-retest reliability of the Closed Kinetic Chain (CKC) Upper Extremity Stability Test.
Twenty-four male college students.
Each subject was tested initially and again 7 days later. Each subject performed 1 submaximal test followed by 3 maximal efforts. A 45-second rest was given after each 15-second test. The 2 maximal-test scores were averaged and compared with those from the retest.
The intraclass correlation coefficient was .922 for test-retest reliability. A paired-samples t test (.927) was conducted, and the coefficient of stability was .859. The results indicate that the CKC Upper Extremity Stability Test is a reliable evaluation tool.
John R. Sirard, Ann Forsyth, J. Michael Oakes and Kathryn H. Schmitz
The purpose of this study was to determine 1) the test-retest reliability of adult accelerometer-measured physical activity, and 2) how data processing decisions affect physical activity levels and test-retest reliability.
143 people wore the ActiGraph accelerometer for 2 7-day periods, 1 to 4 weeks apart. Five algorithms, varying nonwear criteria (20 vs. 60 min of 0 counts) and minimum wear requirements (6 vs. 10 hrs/day for ≥ 4 days) and a separate algorithm requiring ≥ 3 counts per min and ≥ 2 hours per day, were used to process the accelerometer data.
Processing the accelerometer data with different algorithms resulted in different levels of counts per day, sedentary, and moderate-to-vigorous physical activity. Reliability correlations were very good to excellent (ICC = 0.70−0.90) for almost all algorithms and there were no significant differences between physical activity measures at Time 1 and Time 2.
This paper presents the first assessment of test-retest reliability of the Actigraph over separate administrations in free-living subjects. The ActiGraph was highly reliable in measuring activity over a 7-day period in natural settings but data were sensitive to the algorithms used to process them.