The Influence of Maximal Strength and Knee Angle on the Reliability of Peak Force in the Isometric Squat

This study aimed to investigate the test-retest reliability of peak force in the isometric squat across the strength spectrum using coefficient of variation (CV) and intra-class correlation coefficient (ICC). On two separate days, 59 healthy men (mean (SD) age 23.0 (4.1) years; height 1.79 (0.7) m; body mass 84.0 (15.2) kg) performed three maximal effort isometric squats in two positions (at a 120° and a 90° knee angle). Acceptable reliability was observed at both the 120° (CV = 7.5 (6.7), ICC = 0.960 [0.933, 0.977]) and 90° positions (CV = 9.2 (8.8), ICC = 0.920 [0.865, 0.953]). There was no relationship between peak force in the isometric squat and the test-retest reliability at either the 120° (r = 0.052, p = 0.327) or 90° (r = 0.014, p = 0.613) positions. A subgroup of subjects (n = 17) also completed the isometric squat test at a 65° knee angle. Acceptable reliability was observed in this position (CV = 9.6 (9.3), ICC = 0.916 [0.766, 0.970]) and reliability was comparable to the 120° and 90° positions. Therefore, we deem isometric squat peak force output to be a valid and reliable measure across the strength spectrum and in different isometric squat positions.

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Validity and reliability of the English and translated Chinese versions of the Integrated Palliative care Outcome Scale (IPOS) in Singapore

10.21203/rs.3.rs-120229/v1 ◽

2020 ◽

Author(s):

Victoria Long ◽

Yin Bun Cheung ◽

Debra Qu ◽

Katherine Lim ◽

Guozhang Lee ◽

...

Keyword(s):

Correlation Coefficient ◽

Internal Consistency ◽

Validity And Reliability ◽

Cronbach’S Alpha ◽

Rater Reliability ◽

Intra Class Correlation ◽

Retest Reliability ◽

Cronbach's Alpha ◽

Test Retest Reliability ◽

Intra Class Correlation Coefficient

Abstract Context: Measurement of patient-centred outcomes enables clinicians to focus on patient and family priorities and enables quality of palliative care to be assessed.Objectives: This study aimed to evaluate the validity and reliability of the English and translated Chinese IPOS among advanced cancer patients in Singapore.Methods: IPOS was forward and backward translated from English into Chinese. Structural validity was assessed by confirmatory factor analysis; known-group validity by comparing inpatients and community patients; construct validity by correlating IPOS with Edmonton Symptom Assessment System-revised (ESAS-r) and Functional Assessment of Cancer Therapy–General (FACT-G); internal consistency by Cronbach’s alpha; inter-rater reliability between patient and staff responses; test-retest reliability of patient responses between two timepoints.Results: 111 English-responding and 109 Chinese-responding patients participated. The three-factor structure (Physical Symptoms, Emotional Symptoms and Communication and Practical Issues) was confirmed with Comparative Fit Index and Tucker-Lewis-Index > 0.9 and Root Mean Square Error of Approximation < 0.08. Inpatients scored higher than outpatients as hypothesised. Construct validity (Pearson’s correlation coefficient, r≥|0.608|) was shown between the related subscales of IPOS and FACT-G and ESAS-r. Internal consistency was confirmed for total and subscale scores (Cronbach's alpha ≥ 0.84), except for the Communication and Practical Issues subscale (Cronbach’s alpha = 0.29–0.65). Inter-rater reliability (Intra-class correlation coefficient [ICC] ≤ 0.43) between patient and staff responses was insufficient. Test-retest reliability was confirmed with Intra-class correlation coefficient ICC = 0.80 (English) and 0.88 (Chinese) for IPOS Total.Conclusion: IPOS in English and Chinese showed good validity, good internal consistency, and good test-retest reliability, except for the Communication and Practical Issues subscale. There was poor inter-rater reliability between patients and staff.

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Psychometric validation and cross-cultural adaptation of the Integrated Palliative care Outcome Scale in Polish (IPOS-Pol)

Palliative & Supportive Care ◽

10.1017/s1478951521001176 ◽

2021 ◽

pp. 1-7

Author(s):

Marta Szeliga ◽

Aleksandra Kotlińska-Lemieszek ◽

Paweł Jagielski ◽

Wojciech Jaroszewski ◽

Ilona Kuźmicz ◽

...

Keyword(s):

Palliative Care ◽

Correlation Coefficient ◽

Internal Consistency ◽

Intra Class Correlation ◽

Retest Reliability ◽

Patient Version ◽

Eortc Qlq ◽

Test Retest Reliability ◽

Intra Class Correlation Coefficient

Abstract Objective The study aimed to assess the reliability and validity of the IPOS-Pol for patient self-reporting. Method Patients (>18 years of age) with advanced cancer admitted to three palliative care centers (inpatient units and home-based) were recruited to a multicenter, cross-sectional, observational, prospective study. Participants provided responses to the IPOS-Pol Patient version and the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire – Core 15 – Palliative Care (EORTC QLQ-C15-PAL) Polish version at baseline (T1) and four to seven days later (T2). We assessed test–retest reliability, internal consistency, and construct validity of the tool. Results One hundred and eighty patients were included. Test–retest reliability demonstrated no statistically significant differences in the average outcomes of the IPOS-Pol between T1 and T2 (27.2 ± 9.2 vs. 26.5 ± 8.7; p > 0.05). The intra-class correlation coefficient between T1 and T2 was r = 0.83 (p < 0.0001), the intra-class correlation coefficient for test–retest reliability of the IPOS-Pol items ranged from 0.63 to 0.84 (p < 0.0001), and the Cronbach's α coefficient for internal consistency was 0.773. The correlation coefficient between the IPOS-Pol and EORTC QLQ-C15-PAL total score was 0.79 (p < 0.001). Significance of results The patient version of the Polish adaptation of IPOS is a valid and reliable outcome measure for assessing symptoms and concerns of individuals receiving palliative care, as well as the quality of care provided.

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A test-retest reliability study of assessing small cutaneous fibers by measuring current perception threshold with pin electrodes

PLoS ONE ◽

10.1371/journal.pone.0242490 ◽

2020 ◽

Vol 15 (11) ◽

pp. e0242490

Author(s):

Weiwei Xia ◽

Han Fu ◽

Haiying Liu ◽

Fanqi Meng ◽

Kaifeng Wang

Keyword(s):

Blood Flow ◽

Quantitative Measurement ◽

Nerve Fibers ◽

Reliability Study ◽

Perception Threshold ◽

Intra Class Correlation ◽

Retest Reliability ◽

Current Perception Threshold ◽

Test Retest Reliability ◽

Intra Class Correlation Coefficient

Background The quantitative measurement of current perception threshold (CPT) has been used as a method to assess the function of nerve fibers in neuropathy diseases. The aim of this study was to assess the test-retest reliability measuring CPT using the circular pin electrodes for assessing the function of cutaneous thin nerve fibers. Methods CPT measurement was repeated on two separate days with at least one-week interval in 55 volunteers. Superficial blood flow (SBF) and skin temperature (ST) were measured on the skin in an around area concentric to the circular pin electrodes after the process of finding CPTs. The coefficient of variation (CV) and intra-class correlation coefficient (ICC) were calculated. The correlation between each two of CPT, SBF increment and ST increment was analyzed. Results No significant differences were found for CPT, SBF and ST between two sessions. SBF was found to be significantly increased after the process of finding CPT. CPT values of males were found to be higher than females. SBF increment was found to be positively correlated with ST increment. The ICC values for CPT, SBF and ST were 0.595, 0.852 and 0.728, respectively. The CV values for CPT, SBF and ST were 25.53%, 12.59% and 1.94%, respectively. Conclusions The reliability of CPT measurement using circular pin electrodes is fair, and need consistence of measurements in longitudinal studies.

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Walking speed of normal subjects and amputees: Aspects of validity of gait analysis

Prosthetics and Orthotics International ◽

10.3109/03093649309164360 ◽

1993 ◽

Vol 17 (2) ◽

pp. 78-82 ◽

Cited By ~ 55

Author(s):

A. M. Boonstra ◽

V. Fidler ◽

W. H. Eisma

Keyword(s):

Walking Speed ◽

Normal Subjects ◽

Simultaneous Recording ◽

Intra Class Correlation ◽

Retest Reliability ◽

Fast Speed ◽

Walking Speeds ◽

Test Retest Reliability ◽

Knee Disarticulation ◽

Intra Class Correlation Coefficient

This study investigated some aspects of the validity of walking speed recording in 15 normal subjects, 16 trans-femoral amputees and 8 knee disarticulation amputees. The variability and test-retest reliability of walking speed and the influence of simultaneous recording of EMG and goniometry on comfortable and fast walking speeds were studied. The variability between sessions was mainly determined by the variance within each session. The variance of speed within sessions while walking with fast speed, was higher when walking without equipment than when walking with equipment. The variances of speed within sessions of the normal subjects were higher than those for both amputee groups. The test-retest reliability, expressed by the intra-class correlation coefficient, was good: between 0.83 and 0.98. The speed when walking without equipment was significantly higher both in normal subjects and amputees than the speed when.walking with equipment.

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Test-Retest Reliability of Level-Specific CE-Chirp Auditory Brainstem Response in Normal-Hearing Adults

Journal of Audiology & Otology ◽

10.7874/jao.2020.00073 ◽

2021 ◽

Vol 25 (1) ◽

pp. 14-21

Author(s):

Fatin Nabilah Jamal ◽

Ahmad Aidil Arafat Dzulkarnain ◽

Fatin Amira Shahrudin ◽

Muhammad Nasrullah Marzuki

Keyword(s):

Auditory Brainstem Response ◽

Auditory Brainstem ◽

Normal Hearing ◽

Intra Class Correlation ◽

Retest Reliability ◽

Clinical Session ◽

Brainstem Response ◽

The Right ◽

Test Retest Reliability ◽

Intra Class Correlation Coefficient

Background and Objectives: There is growing interest in the use of the Level-specific (LS) CE-Chirp® stimulus in auditory brainstem response (ABR) due to its ability to produce prominent ABR waves with robust amplitudes. There are no known studies that investigate the test-retest reliability of the ABR to the LS CE-Chirp® stimulus. The present study aims to investigate the test-retest reliability of the ABR to the LS CE-Chirp® stimulus and compare its reliability with the ABR to standard click stimulus at multiple intensity levels in normal-hearing adults.Subjects and Methods: Eleven normal-hearing adults participated. The ABR test was repeated twice in the same clinical session and conducted again in another session. The ABR was acquired using both the click and LS CE-Chirp® stimuli at 4 presentation levels (80, 60, 40, and 20 dBnHL). Only the right ear was tested using the ipsilateral electrode montage. The reliability of the ABR findings (amplitudes and latencies) to the click and LS CE-Chirp® stimuli within the same clinical session and between the two clinical sessions was calculated using an intra-class correlation coefficient analysis (ICC).Results: The results showed a significant correlation of the ABR findings (amplitude and latencies) to both stimuli within the same session and between the clinical sessions. The ICC values ranged from moderate to excellent. Conclusions: The ABR results from both the LS CE-Chirp® and click stimuli were consistent and reliable over the two clinical sessions suggesting that both stimuli can be used for neurological diagnoses with the same reliability.

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Test–Retest Reliability of Synchrony and Metastability in Resting State fMRI

Brain Sciences ◽

10.3390/brainsci12010066 ◽

2021 ◽

Vol 12 (1) ◽

pp. 66

Author(s):

Lan Yang ◽

Jing Wei ◽

Ying Li ◽

Bin Wang ◽

Hao Guo ◽

...

Keyword(s):

Resting State ◽

Resting State Fmri ◽

Resting State Networks ◽

Functional Magnetic Resonance ◽

Intra Class Correlation ◽

Retest Reliability ◽

Brain Signals ◽

Human Connectome Project ◽

Test Retest Reliability ◽

The Brain

In recent years, interest has been growing in dynamic characteristic of brain signals from resting-state functional magnetic resonance imaging (rs-fMRI). Synchrony and metastability, as neurodynamic indexes, are considered as one of methods for analyzing dynamic characteristics. Although much research has studied the analysis of neurodynamic indices, few have investigated its reliability. In this paper, the datasets from the Human Connectome Project have been used to explore the test–retest reliabilities of synchrony and metastability from multiple angles through intra-class correlation (ICC). The results showed that both of these indexes had fair test–retest reliability, but they are strongly affected by the field strength, the spatial resolution, and scanning interval, less affected by the temporal resolution. Denoising processing can help improve their ICC values. In addition, the reliability of neurodynamic indexes was affected by the node definition strategy, but these effects were not apparent. In particular, by comparing the test–retest reliability of different resting-state networks, we found that synchrony of different networks was basically stable, but the metastability varied considerably. Among these, DMN and LIM had a relatively higher test–retest reliability of metastability than other networks. This paper provides a methodological reference for exploring the brain dynamic neural activity by using synchrony and metastability in fMRI signals.

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Design of a Tennis-Specific Agility Test (TAT) for Monitoring Tennis Players

Journal of Human Kinetics ◽

10.2478/hukin-2021-0094 ◽

2021 ◽

Vol 80 (1) ◽

pp. 239-250

Author(s):

Marleen G.T. Jansen ◽

Marije T. Elferink-Gemser ◽

Aldo E. Hoekstra ◽

Irene R. Faber ◽

Barbara C. H. Huijgen

Keyword(s):

Concurrent Validity ◽

Measurement Properties ◽

Minimal Detectable Change ◽

Retest Reliability ◽

Tennis Players ◽

Cognitive Agility ◽

Test Retest Reliability ◽

Short Time ◽

Pearson Correlations ◽

Intra Class Correlation Coefficient

Abstract Agility is an important ability for tennis players. To be successful in the rallies, players must perform rapid, multidirectional movements in response to the ball and/or the position of the opponent. For a test to be representative in monitoring agility performance, it should capture a combination of the physical and cognitive agility performance. Considering that literature reports no reliable and valid sport-specific agility test for tennis, the aim of this article was to design and evaluate the measurement properties of a Tennis-specific Agility Test (TAT). To evaluate the TAT, test-retest reliability, concurrent validity, and feasibility were assessed. For reproducibility, a two-way mixed ANOVA was performed. Concurrent validity was assessed using Pearson correlations. A total of 69 tennis players participated in this study of whom 16 competed at the international (22 ± 3.7 years, playing level (Dynamic Rating System): .8 ± .3), 43 at the national (14 ± 1.4 years, playing level: 4.6 ± 1.4), and 10 at the regional level (15 ± 0.8 years, playing level: 4.9 ± 1.1). Test-retest reliability was found to be moderate with an Intra-Class Correlation coefficient (ICC) of .74 (p < .01) and a percentual minimal detectable change (%MDC) of 6.2%. Concurrent validity was found to be moderate by comparison with a recognised agility test, the Spider Drill, which measures only the physical component (.70; p < .01), and by comparison with tennis performance for both boys (r = .67; p < .01) and girls (r = .72; p < .01). The feasibility was high with short time for preparation (five to ten minutes) and time per participant (<5 minutes). In conclusion, the TAT shows promising results for assessing sport-specific agility performance in tennis making it likely to be used in the practical setting.

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Test-retest reliability for HAQ-DI and SF-36 PF for the measurement of physical function in psoriatic arthritis

The Journal of Rheumatology ◽

10.3899/jrheum.210175 ◽

2021 ◽

pp. jrheum.210175

Author(s):

Ying Ying Leung ◽

William Tillett ◽

Pil Hojgaard ◽

Ana-Maria Orbai ◽

Richard Holland ◽

...

Keyword(s):

Psoriatic Arthritis ◽

Short Form ◽

Health Assessment ◽

Correlation Coefficients ◽

Intra Class Correlation ◽

Retest Reliability ◽

Sf 36 ◽

Reliability Performance ◽

Test Retest Reliability

Objective Due to no existing data, we aimed to derive evidence to support test-retest reliability for the Health Assessment Questionnaire-Disability Index (HAQ-DI) and Medical Outcome Survey Short-Form-36 item physical functioning domain (SF-36 PF) in psoriatic arthritis (PsA). Methods We identified datasets that collected relevant data for test-retest reliability for HAQ-DI and SF-36 PF; and evaluated them using OMERACT Filter 2.1 methodology. We calculated intra-class correlation coefficients (ICC) as a measure of test-retest reliability. We then conducted a quality assessment and evaluated the adequacy of test-retest reliability performance. Results Two datasets were identified for HAQ-DI and one for SF-36 PF in PsA. The quality of the datasets was good. The ICCs for HAQ-DI were excellent in both datasets: 0.94 (95% CI: 0.88 to 0.97) and 0.94 (95% CI: 0.89 to 0.97). The ICC of SF-36 PF was good (0.89, 95% CI: 0.76 to 0.95). The performance of test-retest reliability for both instruments was judged to be adequate. Conclusion The new data derived support good and reasonable test-retest reliability for HAQ-DI and SF-36 PF in PsA.

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Reliability and Validity of the Arthritis Hand Function Test in Adults with Osteoarthritis

The Occupational Therapy Journal of Research ◽

10.1177/153944929701700104 ◽

1997 ◽

Vol 17 (1) ◽

pp. 55-66 ◽

Cited By ~ 17

Author(s):

Catherine Backman ◽

Hazel Mackie

Keyword(s):

Daily Living ◽

Hand Function ◽

Reliability And Validity ◽

Self Report ◽

Reliable Measure ◽

Retest Reliability ◽

Function Test ◽

Valid Test ◽

Test Retest Reliability ◽

Physical Components

The Arthritis Hand Function Test (AHFT) has shown promise as a standardized, reliable measure of hand function in adults with rheumatoid arthritis in previous studies. This study adds to the development of the multi-item AHFT by evaluating its inter-rater and test-retest reliability in a sample of 26 adults (mean age, 67 years) with osteoarthritis. Further, because ability to perform activities of daily living (ADD is predicated on physical components such as hand function, the validity of the AHFT is examined by correlating the scores achieved by these subjects with their scores from self-report measures of physical ADL and instrumental ADL. Analysis indicates strong inter-rater reliability ( r= 0.99 or better for all AHFT items) and moderate to strong test-retest reliability (range, r= 0.74 to r=0.96). Moderate correlations for most AHFT items with physical ADL and instrumental ADL lend support to its development as a valid test of hand function.

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Reliability and validity of the Chinese version of the Nutritional Form For the Elderly

Public Health Nutrition ◽

10.1017/s1368980014003267 ◽

2015 ◽

Vol 18 (14) ◽

pp. 2559-2564 ◽

Cited By ~ 4

Author(s):

Han Gao ◽

Ulrika Söderhamn ◽

Lin Zhang ◽

Hui-Xia Cui ◽

Kun Liu

Keyword(s):

Construct Validity ◽

Content Validity ◽

The Elderly ◽

Chinese Version ◽

Sufficient Evidence ◽

English Version ◽

Intra Class Correlation ◽

Retest Reliability ◽

Simplified Chinese ◽

Test Retest Reliability

AbstractObjectiveThe present study aimed to translate the English version of the Nutritional Form For the Elderly into Simplified Chinese, as well as to test the reliability (homogeneity and stability) and validity (content and construct validity) of the Chinese version of the Nutritional Form For the Elderly (NUFFE-CHI).DesignThe study adopted a cross-sectional design. The English version of the NUFFE was translated into Simplified Chinese and a questionnaire survey was conducted. The data were analysed with statistical methods to estimate the homogeneity, stability, content and construct validity.SettingJinzhou City, China.SubjectsA total number of 701 community-dwelling older adults answered the questionnaire, including background variables and the NUFFE-CHI. A small group of the participants (n 50) completed the NUFFE-CHI twice for test–retest reliability.ResultsCronbach’s α was 0·65 and the split-half reliability was 0·67. Item-to-total correlation analyses showed that the scale has sufficient internal consistency. The test–retest reliability regarding the total scores of NUFFE-CHI was reflected in an intra-class correlation coefficient of 0·88. The intra-class correlation coefficients between the test and retest of the NUFFE-CHI items varied between 0·43 and 0·98. A content validity index of 0·83 explained good content validity. Construct validity was demonstrated in an exploratory factor analysis with a six-factor solution, explaining 57·65 % of the variance.ConclusionsThis first testing of the NUFFE-CHI indicates sufficient evidence for reliability, content and construct validity. Further testing studies regarding homogeneity, concurrent validity, sensitivity and specificity are required before the NUFFE-CHI can be used as a screening instrument in clinical settings and in research.

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