Absolute reliability and validity of the OptoGaitTM system to measure spatiotemporal gait parameters during running

2020 ◽  
pp. 175433712097740
Author(s):  
Felipe García-Pinillos ◽  
Pedro A Latorre-Román ◽  
Jose M Chicano-Gutiérrez ◽  
Emilio J Ruiz-Malagón ◽  
Juan A Párraga-Montilla ◽  
...  
Keyword(s):  
Video Analysis ◽  
Concurrent Validity ◽  
High Speed ◽  
Reliability And Validity ◽  
T Test ◽  
Validity And Reliability ◽  
High Speed Video ◽  
Gait Characteristics ◽  
Spatiotemporal Parameters ◽  
Absolute Reliability

The biomechanics of walking and running, in both ground and treadmill conditions, have been extensively analysed and important differences have been reported. Despite some previous studies having examined the validity and reliability of the OptoGait™ system for measuring gait characteristics during walking, no previous works have determined the reliability and validity of this system while running on a treadmill. Therefore, this study aimed to determine the absolute reliability (within-subject variation) and evaluate the concurrent validity of the OptoGait™ system for measuring spatiotemporal variables while running at a comfortable speed by comparing data with a highly accurate system of measuring those parameters (i.e. video analysis at 1000 Hz). Forty-nine endurance runners performed a running protocol on a treadmill at a comfortable speed. Two systems were used to collect data: OptoGait™ system and high-speed video analysis at 1000 Hz. The coefficient of variation (CV) was calculated as a measure of absolute reliability. The OptoGait™ system reported a CV range between 2.2% and 11.4% for spatiotemporal parameters, while the video analysis showed a CV range between 0.02% and 9.9%. To determine concurrent validity, intra class correlation coefficients (ICC) and pairwise comparisons of means (t-test) were calculated between data from both systems. Although the paired t-test demonstrated significant differences between systems, a high level of agreement (ICC > 0.89) was obtained in spatiotemporal parameters between systems. When compared to a high-speed video analysis at 1000 Hz, the results indicate that the OptoGait™ system is a reliable and valid tool to measure spatiotemporal gait characteristics while running on a treadmill at a comfortable speed.

Influence of RunScribe™ placement on the accuracy of spatiotemporal gait characteristics during running

2019 ◽  
Vol 234 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Felipe García-Pinillos ◽  
José M Chicano-Gutiérrez ◽  
Emilio J Ruiz-Malagón ◽  
Luis E Roche-Seruendo
Keyword(s):  
Video Analysis ◽  
Contact Time ◽  
High Speed ◽  
Intraclass Correlation ◽  
Step Length ◽  
Flight Time ◽  
Systematic Bias ◽  
Step Frequency ◽  
High Speed Video ◽  
Spatiotemporal Parameters

This study aimed to examine the influence of RunScribe location (i.e. lace shoe vs heel shoe) on the accuracy of spatiotemporal gait characteristics during running by comparing data with a high-speed video analysis system at 1000 Hz. A total of 49 endurance runners performed a running protocol on a treadmill at comfortable velocity. Two systems were used to determine spatiotemporal parameters (i.e. contact time, flight time, step frequency, and step length) during running: high-speed video analysis at 1000 Hz and two different RunScribe placements (i.e. lace shoe vs heel shoe). The pairwise comparisons showed some between-system differences in both lace shoe (contact time: p = 0.009; step frequency: p = 0.001) and heel shoe (flight time: p = 0.006; step frequency: p = 0.010), although the effect sizes were small (effect size < 0.3 in all cases). The intraclass correlation coefficients revealed an almost perfect association between systems for contact time and flight time (intraclass correlation coefficient: 0.85–0.90), and step length and step frequency (intraclass correlation coefficient: 0.96–0.97), regardless of the RunScribe placement. Bland–Altman plots revealed that the lace shoe location yielded smaller systematic bias, random errors, and narrower limits of agreement for spatiotemporal parameters during running, except for SF, which had a higher accuracy in a heel shoe location. The results suggest that RunScribe is a valid system to measure spatiotemporal parameters during running on a treadmill according to a high-speed video analysis at 1000 Hz. In addition, the data indicate that the location of the RunScribe system (lace shoe vs heel shoe) plays an important role on the accuracy of spatiotemporal parameters. The lace shoe placement showed smaller systematic bias, random errors, and narrower limits of agreement for contact time, flight time, and step length, whereas the heel shoe placement was slightly more accurate for the step frequency.

scholarly journals Psychometric Analyses of the Indian (Hindi) Version of the Child Perception Questionnaire (CPQ11–14)

Children ◽  
2020 ◽  
Vol 7 (10) ◽  
pp. 175 ◽  
Author(s):  
Santosh Kumar Tadakamadla ◽  
Garima Mangal ◽  
Mir Faeq Ali Quadri ◽  
Maryam Nayeem ◽  
Jyothi Tadakamadla
Keyword(s):  
Oral Health ◽  
Internal Consistency ◽  
Concurrent Validity ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Repeated Administration ◽  
Cross Sectional Study ◽  
Validity And Reliability ◽  
Cross Sectional ◽  
Child Perception

The current research aims to evaluate the reliability and validity of the Hindi Child Perception Questionnaire (CPQ11–14) in a child population of India. A randomly selected sample of children aged 11–14 years (n = 331) and their parents completed the Hindi translation of CPQ11–14 and the Parental-Caregiver Perceptions Questionnaire (P-CPQ), respectively, in this cross-sectional study. Children also provided a self-rating of oral health and were examined for dental caries. Exploratory Factor Analysis (EFA) was conducted to assess the dimensionality of the Hindi-CPQ11–14. Internal consistency and reliability on repeated administration were evaluated. Convergent and divergent validities were determined by estimating correlation coefficients between items and the hypothesised subscales. Concurrent validity was assessed using multiple linear regression analyses. The four factors extracted in EFA had a total variance of 38.5%, comprising 31 items. Cronbach’s alpha for the internal consistency of the overall scale was 0.90; reliability on repeated administration was 0.92. All the Hindi CPQ11–14 items had an item-hypothesised subscale correlation coefficient of ≥0.4, and these were greater than item-other hypothesised subscale correlations, demonstrating good convergent and divergent validities respectively. Hindi-CPQ11–14 was associated with self-ratings of the oral health and overall P-CPQ scores demonstrating good concurrent validity. Hindi-CPQ11–14 showed a factor structure different from the English CPQ11–14 and exhibited good validity and reliability.

scholarly journals Validity and Reliability of 2-Dimensional Video-Based Assessment to Analyze Foot Strike Pattern and Step Rate During Running: A Systematic Review

2019 ◽  
Vol 11 (5) ◽  
pp. 409-415 ◽  
Author(s):  
Fábio Carlos Lucas de Oliveira ◽  
Anny Fredette ◽  
Sherezada Ochoa Echeverría ◽  
Charles Sebiyo Batcho ◽  
Jean-Sébastien Roy
Keyword(s):  
Systematic Review ◽  
Concurrent Validity ◽  
Data Extraction ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Validity And Reliability ◽  
Level Of Evidence ◽  
Step Rate ◽  
Cosmin Checklist ◽  
Foot Strike

Context: Two-dimensional (2D) video-based analysis is often used by clinicians to examine the foot strike pattern (FSP) and step rate in runners. Reliability and validity of 2D video-based analysis have been questioned. Objective: To synthesize the psychometric properties of 2D video-based analysis for assessing runners’ FSP and step rate while running. Data Sources: Medline/PubMed, Science Direct, Embase, EBSCOHost/CINAHL, and Scielo were searched from their inception to August 2018. Study Selection: Studies were included if (1) they were published in English, French, Portuguese or Spanish; (2) they reported at least 1 psychometric property (validity and/or reliability) of 2D video-based analysis to assess running kinematics; and (3) they assessed FSP or step rate during running. Study Design: Systematic review. Level of Evidence: Level 2. Data Extraction: Studies were screened for methodological (MacDermid checklist) and psychometric quality (COSMIN checklist) by 2 independent raters. Results: Eight studies, with a total of 702 participants, were included. Seven studies evaluated the reliability of 2D video to assess FSP and found very good to excellent reliability (0.41 ≤ κ ≤ 1.00). Two studies reported excellent reliability for the calculation of step rate (0.75 ≤ intraclass correlation coefficient [ICC] ≤ 1.00). One study demonstrated excellent concurrent validity between 2D and 3D (gold standard) motion capture systems to determine FSP (Gwet agreement coefficient [AC] > 0.90; ICC > 0.90), and another study found excellent concurrent validity between 2D video and another device to calculate step rate (0.84 ≤ ICC ≤ 0.95). Conclusion: Strong evidence suggests that 2D video-based analysis is a reliable method for assessing FSP and quantifying step rate, regardless of the experience of the assessor. Limited evidence exists on the validity of 2D video-based analysis in determining FSP and calculating step rate during running.

scholarly journals Questionnaire for Assessing Preschoolers’ Organizational Abilities in Their Natural Environments: Development and Establishment of Validity and Reliability

2017 ◽  
Vol 2017 ◽  
pp. 1-9
Author(s):  
Gila Tubul-Lavy ◽  
Nirit Lifshitz
Keyword(s):  
Concurrent Validity ◽  
Reliability And Validity ◽  
Preschool Age ◽  
Intervention Programs ◽  
Natural Environments ◽  
Typically Developing ◽  
Validity And Reliability ◽  
Two Factors ◽  
Good Internal Consistency ◽  
Teachers And Parents

Despite the consensus in the literature regarding the importance of organizational abilities in performing daily tasks, currently there is no assessment that focuses exclusively on such abilities among young children. The study aims to develop a Questionnaire for Assessing Preschoolers’ Organizational Abilities (QAPOA), Parents’ and Teachers’ versions, and to examine their reliability and validity. QAPOA was distributed to preschool teachers and parents of 215 typically developing 4–5.6-year-old children. The teachers’ and parents’ versions demonstrated good internal consistency. Factor analysis performed to examine the tool’s content validity yielded two factors: motor-based and language-based OA. Furthermore, both versions of the questionnaire demonstrated significant differences between OA among boys and girls. Concurrent validity was demonstrated between the QAPOA total scores and the equivalent subscale of the BRIEF-P. Given these findings, different cut-off scores were established for identifying boys and girls with either motor-based and/or language-based OA. The results indicate that both the teachers’ and parents’ versions of the QAPOA are reliable and valid measures of children’s organizational abilities. The questionnaires can assess and identify risk for organizational disabilities as early as preschool age. Thus, it can contribute to the planning of appropriate intervention programs and the prevention of difficulties in the future.

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