Reliability of Video Motion-Analysis Systems to Measure Amplitude and Velocity of Shoulder Elevation

2011 ◽  
Vol 20 (4) ◽  
pp. 393-405 ◽  
Author(s):  
Christopher Melton ◽  
David R. Mullineaux ◽  
Carl G. Mattacola ◽  
Scott D. Mair ◽  
Tim L. Uhl
Keyword(s):  
Outcome Measures ◽  
Average Velocity ◽  
Intraclass Correlation ◽  
Good Reliability ◽  
Amplitude Maximum ◽  
Cohort Differences ◽  
Video Motion Analysis ◽  
Shoulder Kinematics ◽  
Standard Error Of Measurement ◽  
Shoulder Elevation

Context:Dynamic shoulder motion can be captured using video capture systems, but reliability has not yet been established.Objective:To compare the reliability of 2 systems in measuring dynamic shoulder kinematics during forward-elevation movements and to determine differences in these kinematics between healthy and injured subjects.Design:Reliability and cohort.Setting:Research laboratory.Participants:11 healthy subjects and 10 post–superior labrum anteroposterior lesion patients (SLAP).Intervention:Contrasting markers were placed at the hip, elbow, and shoulder to represent shoulder elevation and were videotaped in 2 dimensions. Subjects performed 6 repetitions of active elevation (AE) and active assisted elevation of the shoulder, and 3 trials were analyzed using Datapac (comprehensive system) and Dartfish (basic system).Main Outcome Measures:Amplitudes and velocities of the shoulder angle were calculated. Intraclass correlation coefficient (ICC), standard error of measurement (SEM), and levels of agreement (LOA) were used to determine intersystem and intertrial reliability.Results:For AE, the amplitude maximum (ICC = .98–.99, SEM = 2–3°, LOA = −9° to 5°) and average velocity (ICC = .94–.97, SEM = 1°/s, LOA = −4° to 1°/s) indicated excellent intersystem reliability between systems. Intratrial reliability for minimum velocity was moderate for Datapac (ICC = .64, SEM = 4°/s, LOA = 7°/s) and poor for Dartfish (ICC = .52, SEM = 20°/s, LOA = 37°/s). Cohort results demonstrated for AE a greater amplitude for healthy v SLAP (139° ± 11° v 113° ± 13°; P = .001) and interaction for an average velocity increase of 2°/s in healthy and decrease of 2°/s in SLAP patients over the 3 trials (P = .02).Conclusions:Reliability ranges provide the means to assess the clinical meaningfulness of results. The cohort differences are supported when the values exceed the ranges of the SEM; hence the amplitude results are meaningful. For dynamic shoulder elevation measured using video, the assessment of velocity was found to produce moderate to good reliability. The results suggest that with these measures subtle changes in both measures may be possible with further investigations.

scholarly journals Reliability of the Polar Vantage M Sports Watch when Measuring Heart Rate at Different Treadmill Exercise Intensities

Sports ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 117
Author(s):  
Mike Climstein ◽  
Jessica L. Alder ◽  
Alyce M. Brooker ◽  
Elissa J. Cartwright ◽  
Kevin Kemp-Smith ◽  
...  
Keyword(s):  
Heart Rate ◽  
Treadmill Exercise ◽  
Intraclass Correlation ◽  
Good Test ◽  
Good Reliability ◽  
Measurement Variability ◽  
Retest Reliability ◽  
Activity Monitors ◽  
Test Retest Reliability ◽  
Standard Error Of Measurement

Background: Usage of wrist-worn activity monitors has rapidly increased in recent years, and these devices are being used by both fitness enthusiasts and in clinical populations. We, therefore, assessed the test–retest reliability of the Polar Vantage M (PVM) watch when measuring heart rate (HR) during various treadmill exercise intensities. Methods: HR was measured every 30 s (simultaneous electrocardiography (ECG) and PVM). Test–retest reliability was determined using an intraclass correlation coefficient (ICC) with 95% confidence intervals (CIs). Standard error of measurement (SEM) and smallest real difference (SRD) were used to determine measurement variability. Results: A total of 29 participants completed the trials. ICC values for PVM during stages 1, 2 and 5 demonstrated good to excellent test–retest reliability (0.78, 0.78 and 0.92; 95% CI (0.54–0.90, 0.54–0.9, 0.79–0.97)). For PVM during stages 0 (rest), 3 and 4, the ICC values indicated poor to good reliability (0.42, 0.68 and 0.58; 95% CI (−0.27–0.73, 0.32–0.85, 0.14–0.80)). Conclusion: This study identified that the test–retest reliability of the PVM was comparable at low and high exercise intensities; however, it revealed a poor to good test–retest reliability at moderate intensities. The PVM should not be used in a clinical setting where monitoring of an accurate HR is crucial to the patients’ safety.

scholarly journals Reproducibility of work ability and work functioning instruments

2018 ◽  
Vol 68 (2) ◽  
pp. 116-119 ◽  
Author(s):  
A van Schaaijk ◽  
K Nieuwenhuijsen ◽  
M H W Frings-Dresen ◽  
J K Sluiter
Keyword(s):  
Occupational Health ◽  
Work Ability ◽  
Intraclass Correlation ◽  
Daily Practice ◽  
Work Functioning ◽  
Good Reliability ◽  
Smallest Detectable Change ◽  
General Physical ◽  
Standard Error Of Measurement

Abstract Background Work ability (WA) and work functioning (WF) instruments can be useful in occupational health practice. The reproducibility of both instruments is important to their relevance for daily practice. Clinimetrics concerns the methodological and statistical quality of instruments and their performance in practice. Aims To assess the reproducibility of WA and WF instruments. Methods Dutch workers completed a questionnaire containing WA questions and the WF questionnaire twice with a 7-day interval between. The questionnaire included an appraisal of current general, physical and mental/emotional WA (0–10) and the composite WF questionnaire of 49 items (0–100). We measured reproducibility, reliability and agreement by calculating the intraclass correlation coefficient (ICC), the standard error of measurement (SEM) and the smallest detectable change (SDC). Results The answers of 104 respondents were available for analysis. General, physical and mental/emotional WA had ICC values of 0.52, 0.69 and 0.56, respectively. For WF, the ICC value was 0.85. For general WA, the SEM was 0.71. For physical and mental/emotional WA, the SEMs were 0.75 and 0.74, respectively. For general, physical and mental/emotional WA, the SDC was 1.98, 2.09 and 2.05 respectively. The SEM of the WF score was 4.78, and the SDC was 13.25. Conclusions The WA questions showed moderate reliability, while the WF instrument showed good reliability. Occupational health professionals can use the SDCs of the instruments to monitor changes in WA and WF in workers over time.

Reliability and Validity of a Novel Approach to Measure Hip Rotation

2016 ◽  
Vol 25 (4) ◽  
pp. 330-337 ◽  
Author(s):  
Brett Aefsky ◽  
Niles Fleet ◽  
Heather Myers ◽  
Robert J. Butler
Keyword(s):  
Outcome Measures ◽  
Repeated Measures ◽  
Interrater Reliability ◽  
External Rotation ◽  
Weight Bearing ◽  
Intraclass Correlation ◽  
Sports Participation ◽  
Kinetic Chain ◽  
Good Reliability ◽  
Hip Rotation

Context:Currently, hip-rotation range of motion (ROM) is clinically measured in an open kinetic chain in either seated or prone position using passive or active ROM. However, during activities of daily living and during sports participation the hip must be able to rotate in a loaded position, and there is no standard measurement for this.Objective:To determine if a novel method for measuring hip rotation in weight bearing will result in good to very good reliability as demonstrated by an intraclass correlation coefficient (ICC) of >.80 and to investigate if weight-bearing hip measurements will result in significantly reduced hip ROM compared with non-weight-bearing methods.Design:Repeated measures.Setting:Outpatient sports physical therapy clinic.Participants:20 healthy participants (10 men, 10 women) recruited for hip-rotation measurements.Methods:Three trials of both internal and external rotation were measured in sitting, prone, and weight bearing. Two therapists independently measured each participant on the same day. The participants returned the following day to repeat the same measurements with the same 2 therapists.Main Outcome Measures:Degrees of hip internal and external rotation measured in prone, sitting, and loaded positions.Results:In general, the measurement of hip ROM across the different conditions was reliable. The intrarater reliability was .67–.95, while interrater reliability was .59–.96. Interrater reliability was improved when values were averaged across the measures (.75–.97). ICCs for active loaded ROM were .67–.81, while interrater ICCs were .53–.87. In general, prone hip ROM was greater than supine and supine was greater than loaded.Conclusions:Loaded hip rotation can be measured in a clinical setting with moderate to good reliability. The rotation ROM of a loaded hip can be significantly decreased compared with unloaded motion.

Agreement of an Evaluation of the Forward-Step-Down Test by a Broad Cohort of Clinicians With That of an Expert Panel

2016 ◽  
Vol 25 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Gidon Herman ◽  
Oren Nakdimon ◽  
Pazit Levinger ◽  
Shmuel Springer
Keyword(s):  
Outcome Measures ◽  
Work Experience ◽  
Interrater Reliability ◽  
Assessment Tool ◽  
Expert Panel ◽  
Intraclass Correlation ◽  
Annual Conference ◽  
Good Reliability ◽  
Single Measure ◽  
Step Down

Context:The forward-step-down (FSD) test may be used to identify underlying pathologies related to lower-extremity injuries. However, research on its interrater reliability is limited.Objective:To assess the interrater reliability of the FSD test with a broad cohort of clinicians and to compare the level of agreement with an expert panel.Design:Single-measure, interrater reliability.Setting:Annual conference of the Israeli Physical Therapy Society.Participants:15 healthy subjects who performed the FSD test and 142 physical therapists (PTs) who evaluated performance.Methods:Each subject performed the FSD while being videoed. Six videos were selected by an expert panel for analysis. After viewing the videos, FSD performance was rated by 142 PTs, as well as by the expert panel, using a 3-level scale.Main Outcome Measures:Interrater reliability determined by intraclass correlation coefficient (ICC) and percentage of agreement with the expert panel.Results:Fair to good reliability and acceptable agreement were found for the entire sample of raters (ICC –.61, agreement 74%). The percentage of agreement was greater in the subgroup of raters who were familiar with the FSD than in those who were not (78.08% vs 69.32%, respectively, P = .004). Years of work experience did not affect the percentage of agreement (P = .141).Conclusions:Fair to good interrater reliably of the FSD test was demonstrated by a broad cohort of PTs. The findings support the clinical utility of the FSD test as an assessment tool for quality of movement.

scholarly journals Intra- and intersession reliability and agreement of the Unilateral Seated Shot-Put Test outcome measures in healthy male athletes

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Matthieu Degot ◽  
Yoann Blache ◽  
Grégory Vigne ◽  
Gabriel Franger ◽  
Lionel Neyton ◽  
...  
Keyword(s):  
Outcome Measures ◽  
Upper Limb ◽  
Intraclass Correlation ◽  
Bilateral Symmetry ◽  
Horizontal Direction ◽  
Healthy Male ◽  
Good Reliability ◽  
Male Athletes ◽  
Shot Put ◽  
Dominant Side

Abstract Background The Unilateral Seated Shot-Put Test (USSPT) consists of pushing an overweight ball as far as possible to assess upper extremity power unilaterally and bilateral symmetry. Literature however reports various body positions and upper limb pushing patterns to perform USSPT, demanding to provide additional guideline to achieve overweight ball push. This study therefore aimed at assessing the reliability and agreement of USSPT outcome measures when pushing an overweight ball in a horizontal direction. Methods Twenty-seven healthy male athletes performed two sessions, one week apart, of three unilateral pushes per upper limb using a 3-kg medicine ball, for which the distances were measured. The intraclass correlation coefficient (ICC), standard error of measurement (SEM), minimum detectable change at a 95 % confidence level (MDC95 %) and coefficient of variation (CV) were assessed for the pushing distances based on one, two or three trials per side to produce two outcome measures: the pushing distance per limb and USSPT Limb Symmetry Index (LSI) when dividing pushing distance of the dominant side by that of the non-dominant side. Results The most reliable pushing distance per limb was obtained when averaging three pushing distances, normalized by body mass with the exponent 0.35. The mean USSPT LSI was 1.09 ± 0.10 for the first session and 1.08 ± 0.10 for the second session, highlighting good reliability and agreement (ICC = 0.82; SEM = 0.045; MDC95 % = 0.124; CV = 5.02 %). Conclusions When the overweight ball is pushed in a horizontal direction, averaging the distances of three trials for both the dominant and non-dominant limbs is advised to provide the most reliable USSPT distance per limb and USSPT LSI.

scholarly journals Reliability of Thoracic Spine Rotation Range-of-Motion Measurements in Healthy Adults

2012 ◽  
Vol 47 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Katherine D. Johnson ◽  
Kyung-Min Kim ◽  
Byung-Kyu Yu ◽  
Susan A. Saliba ◽  
Terry L. Grindstaff
Keyword(s):  
Range Of Motion ◽  
Thoracic Spine ◽  
Measurement Techniques ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Minimal Detectable Change ◽  
Good Reliability ◽  
Intraclass Correlation Coefficients ◽  
Reliability Estimates ◽  
Standard Error Of Measurement

Context:The reliability of clinical techniques to quantify thoracic spine rotation range of motion (ROM) has not been evaluated.Objective:To determine the intratester and intertester reliability of 5 thoracic rotation measurement techniques.Design:Descriptive laboratory study.Setting:University research laboratory.Patients or Other Participants:Forty-six healthy volunteers (age = 23.6±4.3 years, height = 171.0±9.6 cm, mass = 71.4 ±16.7 kg).Main Outcome Measure(s):We tested 5 thoracic rotation ROM techniques over 2 days: seated rotation (bar in back and front), half-kneeling rotation (bar in back and front), and lumbar-locked rotation. On day 1, 2 examiners obtained 2 sets of measurements (sessions 1, 2) to determine the within-session intertester reliability and within-day intratester reliability. A single examiner obtained measurements on day 2 (session 3) to determine the intratester reliability between days. Each technique was performed 3 times per side, and averages were used for data analysis. Reliability was determined using intraclass correlation coefficients, standard error of measurement (SEM), and minimal detectable change (MDC). Differences between raters during session 1 were determined using paired t tests.Results:Within-session intertester reliability estimates ranged from 0.85 to 0.94. Ranges for the SEM were 1.0° to 2.3° and for the MDC were 2.8° to 6.3°. No differences were seen between examiners during session 1 for seated rotation (bar in front, both sides), half-kneeling rotation (bar in front, left side), or the lumbar locked position (both sides) (all values of P > .05). Within-day intratester reliability estimates ranged from 0.86 to 0.95. Ranges for the SEM were 0.8° to 2.1° and for the MDC were 2.1 ° to 5. 9°. Between-days intratester reliability estimates ranged from 0.84 to 0.91. Ranges for the SEM were 1.4° to 2.0° and for the MDC were 3.9° to 5.6°.Conclusions:All techniques had good reliability and low levels of measurement error. The seated rotation, bar in front, and lumbar-locked rotation tests may be used reliably when more than 1 examiner is obtaining measurements.

Development and preliminary validation of the Chronic Pain Acceptance Questionnaire for Clinicians

2020 ◽  
Vol 20 (4) ◽  
pp. 673-682
Author(s):  
Martin Rabey ◽  
Mark Catley ◽  
Kevin Vowles ◽  
Damien Appleton ◽  
Richard Bennett ◽  
...  
Keyword(s):  
Chronic Pain ◽  
Standard Error ◽  
Rasch Analysis ◽  
Intraclass Correlation ◽  
Healthcare Providers ◽  
Test Reliability ◽  
Good Reliability ◽  
Pain Acceptance ◽  
Standard Error Of Measurement ◽  
Error Of Measurement

AbstractBackground and AimsHigher chronic pain acceptance is associated with lower pain and disability. Clinician beliefs are associated with patients’ beliefs. This study therefore aimed to develop the Chronic Pain Acceptance Questionnaire for Clinicians (CPAQ-C) to measure clinicians’ beliefs regarding the importance of levels of acceptance in patients with chronic pain, and to examine the questionnaire’s psychometric properties.MethodsPhase one: the CPAQ-C was adapted from the Chronic Pain Acceptance Questionnaire. Data on 162 completed questionnaires were analysed using Rasch analysis. Phase Two: the cohort completed the Healthcare Providers Pain and Impairment Relationship Scale, and the association (Pearson’s correlation co-efficient) between these questionnaires examined to assist CPAQ-C validation. Twenty-four participants completed the CPAQ-C one-week later. Test re-test reliability was examined using intraclass correlation co-efficient (2,1) and standard error of measurement. Phase Three: to examine responsiveness 17 clinicians attending a workshop on Acceptance and Commitment Therapy completed the CPAQ-C before and immediately after the workshop, and six-months later. The Skillings Mack test was used to determine whether CPAQ-C scores differed across different timepoints.ResultsRasch analysis supported two subscales: activity engagement and pain willingness. Five poorly functioning items were excluded. There was good correlation between the CPAQ-C and Healthcare Providers Pain and Impairment Relationship Scale (-.54). The CPAQ-C demonstrated good reliability (ICC (2,1): .81; standard error of measurement: 4.76). There was significant improvement in CPAQ-C scores following the workshop (p=<.001).ConclusionsThe CPAQ-C appears a valid, reliable and responsive measure of clinicians’ beliefs regarding the importance of levels of acceptance in patients with chronic pain.ImplicationsWhere the CPAQ-C reveals that clinicians have low perceived levels of importance regarding acceptance in patients with chronic pain those clinicians may benefit from specific education, however, this requires further examination.

Reliability of scapular upward rotation and anterior-posterior tilt measurements using a modified digital inclinometer in patients with subacromial impingement syndrome

2021 ◽  
pp. 1-7
Author(s):  
Da-In An ◽  
Jung-Eun Park ◽  
Chang-Hyung Lee ◽  
Soo-Yong Kim
Keyword(s):  
Intraclass Correlation ◽  
Absolute Measurement ◽  
Impingement Syndrome ◽  
Subacromial Impingement Syndrome ◽  
Subacromial Impingement ◽  
Digital Inclinometer ◽  
Posterior Tilt ◽  
Standard Error Of Measurement ◽  
Absolute Reliability ◽  
Anterior Posterior

BACKGROUD: Reliable scapular upward rotation and anterior-posterior tilt data are required for patients with subacromial impingement syndrome (SIS). Only a few studies have explored the reliability of such measurements derived using a modified inclinometer. OBJECTIVES: To determine the relative and absolute reliability of scapular upward rotation and anterior-posterior tilt measurements derived using a modified digital inclinometer in patients with SIS. METHOD: Seventeen SIS patients were assessed twice within 1 week. We determined the relative and absolute measurement reliability by calculating the intraclass correlation coefficient (ICC), standard error of measurement (SEM), and minimal clinically important difference (MCID). Both intra- and interrater reliability were determined. RESULTS: The intra-rater reliability (both measurements) was high (0.72–0.88), and the interrater ICC was high to excellent (0.72–0.98). Clinically acceptable SEM and MCID values were obtained for scapular upward rotation (SEM: 4.28–9.33∘, MCID: 5.1–11.3∘) and anterior-posterior tilt (SEM: 3.72–7.55∘, MCID: 2.5–10.8∘). CONCLUSIONS: Measurements of scapular upward rotation and anterior-posterior tilt using a modified digital inclinometer reliably reveal scapular position and kinematics in patients with SIS.

scholarly journals Psychometric assessment of the PROMIS Fatigue Short Form 6a in women with moderate-to-severe endometriosis-associated pain

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Robin Pokrzywinski ◽  
Ahmed M. Soliman ◽  
Eric Surrey ◽  
Michael C. Snabes ◽  
Karin S. Coyne
Keyword(s):  
Internal Consistency ◽  
Short Form ◽  
Intraclass Correlation ◽  
Change Score ◽  
Reproductive Age ◽  
Phase Iii ◽  
Controlled Clinical Trial ◽  
Double Blind ◽  
Good Reliability ◽  
Global Impression Of Change

Abstract Background Endometriosis is a common problem in women of reproductive age and has impacts on health-related quality of life and productivity. Fatigue is an important part of the burden of endometriosis, it is not often included as an endpoint in clinical trials. Objectives The study assessed the psychometric properties of the PROMIS Fatigue Short Form 6a in women with moderate-to-severe endometriosis-associated pain. Methods In a phase III double-blind, placebo-controlled clinical trial (NCT01620528), women aged 18–49 years with moderate-to-severe endometriosis-related pain were randomized to elagolix 150 mg once daily, elagolix 200 mg twice daily, or placebo for 6 months. PROMIS Fatigue and dysmenorrhea and non-menstrual pelvic pain (NMPP) scores were assessed at baseline and months 1, 3, and 6, and Patient Global Impression of Change (PGIC) was assessed at months 1, 3, and 6. Reliability (internal consistency and test-retest reliability), construct validity (convergent and known groups validity), and responsiveness were evaluated. Results The analysis included 871 women, mean age 31.5 years. Internal consistency supported a single concept (Cronbach’s alpha 0.93). For the 238 patients with no change in PGIC at month 1, the intraclass correlation coefficient for the PROMIS Fatigue T-score was 0.7 and paired t-test statistically significant (2.84, p = 0.0049). Correlations with other measures were expected to be fairly low as concepts were not redundant. The PROMIS Fatigue discriminated among known groups with mean scores of 55.3, 62.3, and 65.8 at month 3 (PGIC improvement, no change, worsening, respectively). Statically significant discrimination, and change score responsiveness, were seen using clinically relevant anchors (dysmenorrhea and NMPP) at months 3 and 6 between responders and non-responders. Anchor-based (PGIC) responsiveness showed significant improvement from baseline to months 3 and 6 (p < 0.0001). Conclusions PROMIS Fatigue has good reliability, validity, and responsiveness in women with moderate-to-severe endometriosis-associated pain.

A new visual feedback-based system for the assessment of pinch force, endurance, accuracy and precision. A test-retest reliability study

Hand Therapy ◽  
2021 ◽  
pp. 175899832110025
Author(s):  
Alberto Dottor ◽  
Eleonora Camerone ◽  
Mirko Job ◽  
Diletta Barbiani ◽  
Elisa Frisaldi ◽  
...  
Keyword(s):  
Visual Feedback ◽  
Intraclass Correlation ◽  
Precision Grip ◽  
Voluntary Contraction ◽  
Good Reliability ◽  
Retest Reliability ◽  
Relative Reliability ◽  
Time Accuracy ◽  
In The Beginning ◽  
Test Retest Reliability

Introduction Given that pinch is a precision grip involved in sustained submaximal activities, a Sustained Contraction (SC) task could be associated to Maximal Voluntary Contraction (MVC). To better evaluate the thumb-index system, the test-retest reliability of pinch MVC and SC, measured by a visual feedback-based pinch gauge was assessed. Methods 26 healthy participants performed MVC and SC in two separate sessions. SC required to maintain 40%MVC as long as possible and it was evaluated in terms of time, accuracy (Mean Distance between force trace and target force, MD), precision (Coefficient of Variability of force trace, CV). MD and CV analyses were conducted dividing the SC task into three equivalent time stages (beginning, middle, exhaustion). Relative Reliability (RR) was measured by Intraclass Correlation Coefficient, and Absolute Reliability (AR) was measured by Standard Error of Measurement and by Bland-Altman plot. Results MVC and Time showed high RR and AR in both hands. RR of MD and CV in right hand was excellent in the beginning and middle stages, and fair in the exhaustion one, showing decreasing reliability as fatigue increases. In the left hand RR of MD and CV was generally lower. MD showed excellent reliability in the beginning stage and good reliability in the other stages. CV showed fair relative reliability at both beginning and middle stages, excellent in the last one. Conversely, it was observed high AR of MD and CV in all stages in both hands. Conclusions All indices are reliable to assess motor control of thumb-index pinch in both hands.

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