Reliability and Validity of Instrumented Soccer Equipment

2015 ◽  
Vol 31 (3) ◽  
pp. 195-201 ◽  
Author(s):  
Jonathan S. Akins ◽  
Nicholas R. Heebner ◽  
Mita Lovalekar ◽  
Timothy C. Sell
Keyword(s):  
Ankle Joint ◽  
Motion Analysis ◽  
Sagittal Plane ◽  
Reliability And Validity ◽  
Joint Kinematics ◽  
High Rate ◽  
Lower Extremity Injury ◽  
Good Test ◽  
Retest Reliability ◽  
Test Retest Reliability

Ankle ligament sprains are the most common injury in soccer. The high rate of these injuries demonstrates a need for novel data collection methodologies. Therefore, soccer shoes and shin guards were instrumented with inertial sensors to measure ankle joint kinematics in the field. The purpose of this study was to assess test-retest reliability and concurrent criterion validity of a kinematic assessment using the instrumented soccer equipment. Twelve soccer athletes performed athletic maneuvers in the laboratory and field during 2 sessions. In the laboratory, ankle joint kinematics were simultaneously measured with the instrumented equipment and a conventional motion analysis system. Reliability was assessed using ICC and validity was assessed using correlation coefficients and RMSE. While our design criteria of good test-retest reliability was not supported (ICC > .80), sagittal plane ICCs were mostly fair to good and similar to motion analysis results; and sagittal plane data were valid (r = .90−.98; RMSE < 5°). Frontal and transverse plane data were not valid (r < .562; RMSE > 3°). Our results indicate that the instrumented soccer equipment can be used to measure sagittal plane ankle joint kinematics. Biomechanical studies support the utility of sagittal plane measures for lower extremity injury prevention.

Reliability and Validity of Turkish Myasthenia Gravis-Activities of Daily Living Scale

2020 ◽  
pp. 153944922096107
Author(s):  
Ecem Karanfil ◽  
Yeliz Salcı ◽  
Ayla Fil-Balkan ◽  
Can Ebru Bekircan-Kurt ◽  
Sevim Erdem Özdamar ◽  
...  
Keyword(s):  
Construct Validity ◽  
Myasthenia Gravis ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Life Questionnaire ◽  
Good Test ◽  
Retest Reliability ◽  
Test Retest Reliability

Linguistic, reliable, and valid secondary efficacy measures are important in clinical settings and studies. The aim of the study is to report test–retest reliability and construct validity of Turkish version of Myasthenia Gravis-Activities of Daily Living Scale (MG-ADL-T) in Myasthenia Gravis (MG) patients. Fifty-two ocular and generalized individuals with MG, applying to rehabilitation center, were included in the study. MG-ADL-T, MG quality-of-life questionnaire (MG-QoL), MG composite (MGC), quantitative MG score (QMGS), and pulmonary function test were administered. Reliability was assessed with intraclass correlation coefficient (ICC) and Cronbach’s alpha. Spearman correlation test and receiver operating characteristic (ROC) analysis were performed for construct validity. MG-ADL-T had fair internal consistency (Cronbach’s α = .67), excellent test–retest reliability (ICC = 0.96) and moderate construct validity (MG-QoL, r = 0.59; QMGS, r = .58; MGC, r = .68). MG-ADL, a unique scale that evaluates activities of daily living (ADL), has good test–retest reliability and construct validity in Turkish MG patients.

Screening for Neurocognitive Impairment in Pediatric Cancer Long-Term Survivors

2008 ◽  
Vol 26 (25) ◽  
pp. 4138-4143 ◽  
Author(s):  
Kevin R. Krull ◽  
M. Fatih Okcu ◽  
Brian Potter ◽  
Neelam Jain ◽  
ZoAnn Dreyer ◽  
...  
Keyword(s):  
Cancer Survivors ◽  
Screening Method ◽  
Reliability And Validity ◽  
Parent Rating ◽  
Good Test ◽  
Validity Data ◽  
Retest Reliability ◽  
Test Retest Reliability

Purpose Recent studies suggest that up to 40% of childhood cancer survivors may experience neurocognitive problems, a finding that has led the Children's Oncology Group to recommend regular evaluation. However, for a variety of reasons, including costs, time restraints, health insurance, and access to professional resources, these guidelines are often difficult to implement. We report reliability and validity data on a brief neurocognitive screening method that could be used to routinely screen patients in need of comprehensive follow-up. Patients and Methods Two hundred forty consecutive patients were screened during their annual visits to a long-term survivor clinic using standard neurocognitive measures and brief parent rating. From this total, 48 patients had a second screening, and 52 patients had a comprehensive follow-up evaluation. Test-retest reliability and predictive and discriminative validity were examined. Results Good test-retest reliability was demonstrated, with an overall r = 0.72 and all individual subtest correlations greater than r = 0.40. Although means tended to improve from first to second testing, no significant changes were detected (all P > .10). The screen accurately predicted global intellect (F6,45 = 11.81, P < .0001), reading skills (F6,45 = 4.74, P < .001), and mathematics (F6,45 = 3.35, P < .008). Parent rating was a marginal indicator of global intellect only. Conclusion The brief neurocognitive screening was a better predictor of child functioning than specific parent rating. This brief measure, which can be completed in 30 minutes, is a practical and reliable method to identify cancer survivors in need of further neurocognitive follow-up.

scholarly journals Reliability and Validity of the Spanish Language Measures of the NIH Toolbox Cognition Battery

2019 ◽  
Vol 34 (7) ◽  
pp. 1251-1251
Author(s):  
R Fox ◽  
J Hook ◽  
M J Marquine ◽  
J Manly ◽  
B Correia ◽  
...  
Keyword(s):  
Oral Reading ◽  
Convergent Validity ◽  
Linear Models ◽  
Reliability And Validity ◽  
The United States ◽  
Spanish Language ◽  
Good Test ◽  
Retest Reliability ◽  
Language Measures ◽  
Test Retest Reliability

Abstract Objective The NIH Toolbox for Assessment of Neurological and Behavioral Function (NIHTB) was developed under contract from the National Institutes of Health to create a set of easy-to-administer neuropsychological measures, for use across the lifespan (ages 3-85). The NIHTB Cognition Battery (NIHTB-CB) includes two language measures that were developed, calibrated, and normed separately in English and Spanish. This analysis presents the test-retest reliability and construct validity of the Spanish-language picture vocabulary test (S-PVT) and oral reading recognition test (S-ORRT) among adults. Participants and Method Participants were adults age 18-85 who took part in the NIHTB norming study in Spanish (N = 408, Age: M = 44.1, SD = 16.7; Education: M = 10.7, SD = 4.3; 65.0% female). Of these, 48 repeated the battery 1 week later. Both the S-PVT and the S-ORRT were administered using computer adaptive testing and scored using item response theory. Spearman’s correlations were used to evaluate test-retest reliability. Convergent validity was evaluated by correlating S-PVT scores with scores on the Batería-III Woodcock-Muñoz Vocabulario Sobre Dibujos, and by correlating S-ORRT scores with scores on a 48-item version of the Word Accentuation Test. Adjusted Spearman’s correlations and general linear models related scores to age, education, and sex. Results Both the S-PVT (ρ = 0.87, p &lt; .001) and the S-ORRT (ρ = 0.88, p &lt; .001) demonstrated good test-retest reliability. Good convergent validity was found for both the S-PVT (ρ = 0.76, p &lt; .001) and the S-ORRT (ρ = 0.65, p &lt; .001). Scores on the S-PVT were positively related to education (ρ = 0.38, p &lt; .001), and scores on the S-ORRT were negatively related to age (ρ = -0.18, p &lt; .01) and positively related to education (ρ = 0.30, p &lt; .001). Conclusions The Spanish language measures of the NIHTB-CB demonstrated acceptable reliability and validity, suggesting they can be used to measure language ability among Spanish-speaking adults in the United States.

The Constitutional Type Questionnaire: validation in the patient population of the Royal London Homoeopathic Hospital

2001 ◽  
Vol 90 (03) ◽  
pp. 131-137 ◽  
Author(s):  
RA van Haselen ◽  
S Cinar ◽  
P Fisher ◽  
J Davidson
Keyword(s):  
Reliability And Validity ◽  
Good Test ◽  
Good Reliability ◽  
Retest Reliability ◽  
Constitutional Type ◽  
Grade Of Membership ◽  
General Physical ◽  
Test Retest Reliability ◽  
Physical Features ◽  
Item Scale

AbstractIn homeopathy the choice of a medicine is based on the total ‘picture’ presented by the patient. This picture includes ‘constitutional type’ which comprises personality, and general physical features. The Constitutional Type Questionnaire (CTQ) is designed to systematically assess constitutional types. This study examines the reliability and validity of the CTQ. Four hundred and seventy-two outpatients attending clinics at the Royal London Homoeopathic Hospital completed the CTQ, a 152-item scale rating features traditionally considered typical of 19 constitutional homeopathic medicine ‘pictures’ on 5-point frequency or severity scales. A subsample was retested after 1 week to measure the test–retest reliability. Another subsample was prescribed a medicine by a homeopathic doctor. Prescriptions were compared with the CTQ, to assess the content validity of the scale. The construct validity was measured by Grade of Membership (GOM) analysis. The scale demonstrated good test–retest reliability (r=0.73), internal consistency (r=0.95). The correlation between CTQ results and the medicine prescribed by the homeopathic doctor was 75.8%. The GOM analyses are reported by Davidson et al elsewhere in this issue of the journal. Although the CTQ could be improved, the scale displays good reliability and validity.

scholarly journals Reliability and Validity of Running Cadence and Stance Time Derived from Instrumented Wireless Earbuds

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7995
Author(s):  
Anouk Nijs ◽  
Peter J. Beek ◽  
Melvyn Roerdink
Keyword(s):  
Concurrent Validity ◽  
Force Plate ◽  
Reliability And Validity ◽  
Head Movements ◽  
Face Validity ◽  
Good Test ◽  
Promising Alternative ◽  
Retest Reliability ◽  
Stance Time ◽  
Test Retest Reliability

Instrumented earbuds equipped with accelerometers were developed in response to limitations of currently used running wearables regarding sensor location and feedback delivery. The aim of this study was to assess test–retest reliability, face validity and concurrent validity for cadence and stance time in running. Participants wore an instrumented earbud (new method) while running on a treadmill with embedded force-plates (well-established method). They ran at a range of running speeds and performed several instructed head movements while running at a comfortable speed. Cadence and stance time were derived from raw earbud and force-plate data and compared within and between both methods using t-tests, ICC and Bland–Altman analysis. Test–retest reliability was good-to-excellent for both methods. Face validity was demonstrated for both methods, with cadence and stance time varying with speed in to-be-expected directions. Between-methods agreement for cadence was excellent for all speeds and instructed head movements. For stance time, agreement was good-to-excellent for all conditions, except while running at 13 km/h and shaking the head. Overall, the measurement of cadence and stance time using an accelerometer embedded in a wireless earbud showed good test–retest reliability, face validity and concurrent validity, indicating that instrumented earbuds may provide a promising alternative to currently used wearable systems.

scholarly journals VALIDITY AND TEST–RETEST RELIABILITY OF AN INTELLIGENT ROBOTIC SHOULDER JOINT KINEMATICS SYSTEM FOR REHABILITATION

2021 ◽  
Author(s):  
CHANHEE PARK ◽  
SUNG (JOSHUA) H. YOU
Keyword(s):  
Shoulder Joint ◽  
Wrist Joint ◽  
Linear Regression Analysis ◽  
Reliability And Validity ◽  
Neuromuscular Control ◽  
Joint Kinematics ◽  
Arm Swing ◽  
Retest Reliability ◽  
Gait Function ◽  
Test Retest Reliability

The presence of normal upper limb arm swing movement is considered an important gait movement that affects the selective coordinated locomotor control of the shoulder, elbow, and wrist joint movements. However, in patients with neurological disorders, flexor synergy is characterized by decreased selective neuromuscular control and reciprocal disinhibition of the wrist flexor muscles associated with spasticity or shortness. This research aimed to demonstrate the reliability, validity, and feasibility of the progressive exoskeletal robotic shoulder joint kinematics system. The robotic shoulder joint kinematics system comprises a gait function-retraining robot designed to provide arm swing. The changes in the shoulder joint angle between ImageJ motion analysis software and robotic shoulder joint kinematics system were compared in this research to investigate the reliability and validity of the latter. The linear regression analysis revealed good correlation between the measured angles and the shoulder angle data ([Formula: see text]). Furthermore, the test–retest reliability test demonstrated excellent reliability ([Formula: see text]). The robotic shoulder joint kinematics system generated successful arm swing during the locomotion and range of motion training of the shoulder.

The Cardio-Med survey tool: development and pilot validation of a FFQ in a multicultural cardiology cohort

2020 ◽  
Vol 23 (13) ◽  
pp. 2303-2313
Author(s):  
Teagan Kucianski ◽  
Antonia Thodis ◽  
Hassan Vally ◽  
Antigone Kouris-Blazos ◽  
George Moschonis ◽  
...  
Keyword(s):  
High Risk ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Food Record ◽  
Cvd Risk ◽  
Good Test ◽  
Retest Reliability ◽  
Survey Tool ◽  
Diet Pattern ◽  
Test Retest Reliability

AbstractObjective:(i) Describe the development of a multipurpose Cardio-Med survey tool (CMST) comprising a semi-quantitative FFQ designed to measure dietary intake in multicultural patients with or at high risk of CVD and (ii) report pilot evaluation of test–retest reliability and validity of the FFQ in measuring energy and nutrient intakes.Design:The CMST was developed to identify CVD risk factors and assess diet quality over 1 year using an FFQ. Design of the ninety-three-item FFQ involved developing food portion photographs, and a list of foods appropriate for the Australian multicultural population allowing the capture of adherence to a Mediterranean diet pattern. The FFQ was administered twice, 2 weeks apart to assess test–retest reliability, whilst validity was assessed by comparison of the FFQ with a 3-d food record (3DFR).Setting:The Northern Hospital and St Vincent’s Hospital, Melbourne, Australia.Participants:Thirty-eight participants aged 34–81 years with CVD or at high risk.Results:Test–retest reliability of the FFQ was good: intraclass correlation coefficient (ICC) ranged from 0·52 (Na) to 0·88 (alcohol) (mean 0·79), with energy and 70 % of measured nutrients being above 0·75. Validity was moderate: ICC ranged from 0·08 (Na) to 0·94 (alcohol) (mean 0·59), with energy and 85 % of measured nutrients being above 0·5. Bland–Altman plots demonstrated good levels of agreement between the FFQ and 3DFR for carbohydrates, protein, alcohol, vitamin D and Na.Conclusions:The CMST FFQ demonstrated good test–retest reliability and moderate validity for measuring dietary energy and nutrients in a multicultural Australian cardiology population.

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