scholarly journals Test-retest reliability of physical activity questionnaires in Parkinson’s disease

BMC Neurology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Samuel Ånfors ◽  
Ann-Sofi Kammerlind ◽  
Maria H. Nilsson
Keyword(s):  
Physical Activity ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cognitive Impairment ◽  
Weighted Kappa ◽  
Activity Level ◽  
Single Item ◽  
Retest Reliability ◽  
Activity Questionnaires ◽  
Test Retest Reliability

Abstract Background People with Parkinson’s disease are less physically active than controls. It is important to promote physical activity, which can be assessed using different methods. Subjective measures include physical activity questionnaires, which are easy and cheap to administer in clinical practice. Knowledge of the psychometric properties of physical activity questionnaires for people with Parkinson’s disease is limited. The aim of this study was to evaluate the test-retest reliability of physical activity questionnaires in individuals with Parkinson’s disease without cognitive impairment. Methods Forty-nine individuals with Parkinson’s disease without cognitive impairment participated in a test-retest reliability study. At two outpatient visits 8 days apart, the participants completed comprehensive questionnaires and single-item questions: International Physical Activity Questionnaire-Short Form (IPAQ-SF), Physical Activity Scale for the Elderly (PASE), Saltin-Grimby Physical Activity Level Scale (SGPALS) and Health on Equal Terms (HOET). Test-retest reliability was evaluated using the intraclass correlation coefficient (ICC), standard error of measurement (SEM), limits of agreement, weighted kappa or the Svensson method. Results Several of the physical activity questionnaires had relatively low test-retest reliability, including the comprehensive questionnaires (IPAQ-SF and PASE). Total physical activity according to IPAQ-SF had an ICC value of 0.46 (95% confidence interval [CI], 0.21–0.66) and SEM was 2891 MET-min/week. The PASE total score had an ICC value of 0.66 (95% CI, 0.46–0.79), whereas the SEM was 30 points. The single-item scales of SGPALS-past six months (SGPALS-6 m) and HOET question 1 (HOET-q1) with longer time frames (6 or 12 months, respectively) showed better results. Weighted kappa values were 0.64 (95% CI, 0.45–0.83) for SGPALS-6 m and 0.60 (95% CI, 0.39–0.80) for HOET-q1, whereas the single-item questions with a shorter recall period had kappa values < 0.40. Conclusions Single-item questions with a longer time frame (6 or 12 months) for physical activity were shown to be more reliable than multi-item questionnaires such as the IPAQ-SF and PASE in individuals with Parkinson’s disease without cognitive impairments. There is a need to develop a core outcome set to measure physical activity in people with Parkinson’s disease, and there might be a need to develop new physical activity questionnaires.

scholarly journals Validity, reliability, and calibration of the physical activity unit 7 item screener (PAU-7S) at population scale

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Helmut Schröder ◽  
Isaac Subirana ◽  
Julia Wärnberg ◽  
María Medrano ◽  
Marcela González-Gross ◽  
...  
Keyword(s):  
Physical Activity ◽  
Predictive Validity ◽  
Internal Consistency ◽  
Regression Models ◽  
Weighted Kappa ◽  
Linear Regression Models ◽  
Retest Reliability ◽  
Activity Unit ◽  
Test Retest Reliability ◽  
Acceptable Internal Consistency

Abstract Background Validation of self-reported tools, such as physical activity (PA) questionnaires, is crucial. The aim of this study was to determine test-retest reliability, internal consistency, and the concurrent, construct, and predictive validity of the short semi-quantitative Physical Activity Unit 7 item Screener (PAU-7S), using accelerometry as the reference measurement. The effect of linear calibration on PAU-7S validity was tested. Methods A randomized sample of 321 healthy children aged 8–16 years (149 boys, 172 girls) from the nationwide representative PASOS study completed the PAU-7S before and after wearing an accelerometer for at least 7 consecutive days. Weight, height, and waist circumference were measured. Cronbach alpha was calculated for internal consistency. Test-retest reliability was determined by intra-class correlation (ICC). Concurrent validity was assessed by ICC and Spearman correlation coefficient between moderate to vigorous PA (MVPA) derived by the PAU-7S and by accelerometer. Concordance between both methods was analyzed by absolute agreement, weighted kappa, and Bland-Altman statistics. Multiple linear regression models were fitted for construct validity and predictive validity was determined by leave-one-out cross-validation. Results The PAU-7S overestimated MVPA by 18%, compared to accelerometers (106.5 ± 77.0 vs 95.2 ± 33.2 min/day, respectively). A Cronbach alpha of 0.76 showed an acceptable internal consistency of the PAU-7S. Test-retest reliability was good (ICC 0.71 p < 0.001). Spearman correlation and ICC coefficients of MVPA derived by the PAU-7S and accelerometers increased from 0.31 to 0.62 and 0.20 to 0.62, respectively, after calibration of the PAU-7S. Between-methods concordance improved from a weighted kappa of 0.24 to 0.50 after calibration. A slight reduction in ICC, from 0.62 to 0.60, yielded good predictive validity. Multiple linear regression models showed an inverse association of MVPA with standardized body mass index (β − 0.162; p < 0.077) and waist to height ratio (β − 0.010; p < 0.014). All validity dimensions were somewhat stronger in boys compared to girls. Conclusion The PAU-7S shows a good test-retest reliability and acceptable internal consistency. All dimensions of validity increased from poor/fair to moderate/good after calibration. The PAU-7S is a valid instrument for measuring MVPA in children and adolescents. Trial registration Trial registration numberISRCTN34251612.

Construct validity and test-retest reliability of a free mobile application for spatio-temporal gait analysis in Parkinson’s disease patients

2020 ◽  
Vol 79 ◽  
pp. 86-91
Author(s):  
Sergio Clavijo-Buendía ◽  
Francisco Molina-Rueda ◽  
Patricia Martín-Casas ◽  
Paulina Ortega-Bastidas ◽  
Esther Monge-Pereira ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Construct Validity ◽  
Gait Analysis ◽  
Mobile Application ◽  
Retest Reliability ◽  
Spatio Temporal ◽  
Test Retest Reliability

Test-retest reliability of stride length-cadence gait relationship in Parkinson’s disease

2019 ◽  
Vol 71 ◽  
pp. 177-180
Author(s):  
Mira Ambrus ◽  
Jose A. Sanchez ◽  
Jose A Sanchez Miguel ◽  
Fernandez del-Olmo
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Stride Length ◽  
Retest Reliability ◽  
Test Retest Reliability

scholarly journals Virtual Exam for Parkinson's Disease Enables Frequent and Reliable Measurements of Motor Function

2021 ◽  
Author(s):  
Maximilien Burq ◽  
Erin Rainaldi ◽  
King Chung Ho ◽  
Chen Chen ◽  
Bastiaan R Bloem ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Early Stage ◽  
Real Life ◽  
Dropout Rate ◽  
Therapeutic Interventions ◽  
Retest Reliability ◽  
Time Sensitivity ◽  
Remote Measurements ◽  
Test Retest Reliability

Sensor-based remote monitoring could help us better track Parkinson's disease (PD) progression, and measure patients' response to putative disease-modifying therapeutic interventions. To be useful, the remotely-collected measurements should be valid, reliable and sensitive to change, and people with PD must engage with the technology. We developed a smartwatch-based active assessment that enables unsupervised measurement of motor signs of PD. 388 study participants with early-stage PD (Personalized Parkinson Project, 64% men, average age 63 years) wore a smartwatch for a median of 390 days, allowing for continuous passive monitoring. Participants performed unsupervised motor tasks both in the clinic (once) and remotely (twice weekly for one year). Dropout rate was 2% at the end of follow-up. Median wear-time was 21.1 hours/day, and 59% of per-protocol remote assessments were completed. In-clinic performance of the virtual exam verified that most participants correctly followed watch-based instructions. Analytical validation was established for in-clinic measurements, which showed moderate-to-strong correlations with consensus MDS-UPDRS Part III ratings for rest tremor (R=0.70), bradykinesia (R=-0.62), and gait (R=-0.46). Test-retest reliability of remote measurements, aggregated monthly, was good-to-excellent (ICC: 0.75 - 0.96). Remote measurements were sensitive to the known effects of dopaminergic medication (on vs off Cohen's d: 0.19 - 0.54). Of note, in-clinic assessments often did not reflect the patients' typical status at home. This demonstrates the feasibility of using smartwatch-based unsupervised active tests, and establishes the analytical validity of associated digital measurements. Weekly measurements can create a more complete picture of patient functioning by providing a real-life distribution of disease severity, as it fluctuates over time. Sensitivity to medication-induced change, together with the improvement in test-retest reliability from temporal aggregation implies that these methods could help reduce sample sizes needed to demonstrate a response to therapeutic intervention or disease progression.

scholarly journals Validity and Reliability of International Physical Activity Questionnaires for Adults across EU Countries: Systematic Review and Meta Analysis

2020 ◽  
Vol 17 (19) ◽  
pp. 7161
Author(s):  
Vedrana Sember ◽  
Kaja Meh ◽  
Maroje Sorić ◽  
Gregor Starc ◽  
Paulo Rocha ◽  
...  
Keyword(s):  
Physical Activity ◽  
Concurrent Validity ◽  
Meta Analysis ◽  
Official Language ◽  
Retest Reliability ◽  
Physical Activity Questionnaire ◽  
Eu Countries ◽  
Activity Questionnaires ◽  
Test Retest Reliability ◽  
Activity Questionnaire

This review and meta-analysis (PROSPERO registration number: CRD42020138845) critically evaluates test-retest reliability, concurrent validity and criterion validity of different physical activity (PA) levels of three most commonly used international PA questionnaires (PAQs) in official language versions of European Union (EU): International Physical Activity Questionnaire (IPAQ-SF), Global Physical Activity Questionnaire (GPAQ), and European Health Interview Survey-Physical Activity Questionnaire (EHIS-PAQ). In total, 1749 abstracts were screened, 287 full-text articles were identified as relevant to the study objectives, and 20 studies were included. The studies’ results and quality were evaluated using the Quality Assessment of Physical Activity Questionnaires checklist. Results indicate that only ten EU countries validated official language versions of selected PAQs. A meta-analysis revealed that assessment of moderate-to-vigorous PA (MVPA) is the most relevant PA level outcome, since no publication bias in any of measurement properties was detected while test-retest reliability was moderately high (rw = 0.74), moderate for the criterion (rw = 0.41) and moderately-high for concurrent validity (rw = 0.72). Reporting of methods and results of the studies was poor, with an overall moderate risk of bias with a total score of 0.43. In conclusion, where only self-reporting of PA is feasible, assessment of MVPA with selected PAQs in EU adult populations is recommended.

scholarly journals Reliability and Validity of the Geriatric Depression Scale in Italian Subjects with Parkinson’s Disease

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Perla Massai ◽  
Francesca Colalelli ◽  
Julita Sansoni ◽  
Donatella Valente ◽  
Marco Tofani ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Internal Consistency ◽  
Discriminant Validity ◽  
Geriatric Depression Scale ◽  
Depression Scale ◽  
Reliability And Validity ◽  
Geriatric Depression ◽  
Retest Reliability ◽  
Test Retest Reliability

Introduction. The Geriatric Depression Scale (GDS) is commonly used to assess depressive symptoms, but its psychometric properties have never been examined in Italian people with Parkinson’s disease (PD). The aim of this study was to study the reliability and validity of the Italian version of the GDS in a sample of PD patients. Methods. The GDS was administered to 74 patients with PD in order to study its internal consistency, test-retest reliability, construct, and discriminant validity. Results. The internal consistency of GDS was excellent (α = 0.903), as well as the test-retest reliability (ICC = 0.941 [95% CI: 0.886–0.970]). GDS showed a strong correlation with instruments related to the depression (ρ = 0.880) in PD (ρ = 0.712) and a weak correlation with generic measurement instruments (−0.320 < ρ <−0.217). An area under the curve of 0.892 (95% CI 0.809–0.975) indicated a moderate capability to discriminate depressed patients to nondepressed patient, with a cutoff value between 15 and 16 points that predicts depression (sensitivity = 87%; specificity = 82%). Conclusion. The GDS is a reliable and valid tool in a sample of Italian PD subjects; this scale can be used in clinical and research contexts.

Assessment of Physical Activity in Older People With and Without Cognitive Impairment

2011 ◽  
Vol 19 (4) ◽  
pp. 347-372 ◽  
Author(s):  
Klaus Hauer ◽  
Stephen R. Lord ◽  
Ulrich Lindemann ◽  
Sarah E. Lamb ◽  
Kamiar Aminian ◽  
...  
Keyword(s):  
Physical Activity ◽  
Cognitive Impairment ◽  
Older People ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Total Sample ◽  
Motion Sensor ◽  
Sensitivity To Change ◽  
Retest Reliability ◽  
Test Retest Reliability

The purpose of this study was to validate a new interview-administered physical activity questionnaire (Assessment of Physical Activity in Frail Older People; APAFOP) in older people with and without cognitive impairment. The authors assessed feasibility, validity, and test–retest reliability in 168 people (n= 78 with,n= 88 without cognitive impairment). Concurrent validity was assessed against an inertia-based motion sensor and an established questionnaire. Sensitivity to change was tested in an ongoing study in patients with mild to moderate dementia (n= 81). Assessment of physical activity by the APAFOP and the motion sensor correlated well in the total sample (TS; p= .705), as well as in the subsamples with cognitive impairment (CI;p= .585) and without CI (p= .787). Excellent feasibility with an acceptance rate of 100%, test–retest reliability (intraclass correlation coefficients ranging from .973 (TS) to .975 (CI) to .966 (no CI), and sensitivity to change (effect sizes: 0.35–1.47) were found in both subsamples.

Reliability of using foot-worn devices to measure gait parameters in people with Parkinson’s disease

2021 ◽  
pp. 1-8
Author(s):  
Ya-Yun Lee ◽  
Ming-Hao Li ◽  
Jer-Junn Luh ◽  
Chun-Hwei Tai
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Disease Severity ◽  
Wearable Sensors ◽  
Good Reliability ◽  
Retest Reliability ◽  
Early Stages ◽  
Gait Parameters ◽  
Advanced Stages ◽  
Test Retest Reliability

BACKGROUND: Recent advances in technology have warranted the use of wearable sensors to monitor gait and posture. However, the psychometric properties of using wearable devices to measure gait-related outcomes have not been fully established in patients with Parkinson’s disease (PD). OBJECTIVE: This study aimed to investigate the test-retest reliability of body-worn sensors for gait evaluation in people with PD. Additionally, the influence of disease severity on the reliability was determined. METHODS: Twenty individuals with PD were recruited. During the first evaluation, the participants wore inertial sensors on their shoes and walked along a walkway thrice at their comfortable walking speed. The participants were then required to return to the lab after 3–5 days to complete the second evaluation with the same study procedure. Test-retest reliability of gait-related outcomes were calculated. To determine whether the results would be affected by disease severity, reliability was re-calculated by subdividing the participants into early and mid-advanced stages of the disease. RESULTS: The results showed moderate to good reliability (ICC = 0.64–0.87) of the wearable sensors for gait assessment in the general population with PD. Subgroup analysis showed that the reliability was higher among patients at early stages (ICC = 0.71–0.97) compared to those at mid-advanced stages (ICC = 0.65–0.81) of PD. CONCLUSIONS: Wearable sensors could reliably measure gait parameters in people with PD, and the reliability was higher among individuals at early stages of the disease compared to those at mid-advanced stages. Absolute reliability values were calculated to act as references for future studies.

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