Validity and Reliability of a Phone App and Stopwatch for the Measurement of 505 Change of Direction Performance: A Test-Retest Study Design

Purpose: The aim of this study was to explore the validity and reliability of a phone app [named: change of direction (COD) timer] and stopwatches for the measurement of COD performance.Methods: Sixty-two youth basketball players (age: 15.9±1.4yrs., height: 178.8±11.0cm, and body mass: 70.0±14.1kg) performed six trials of 505 COD test (with the left side being the plant leg first, then the right side). The completion time was measured simultaneously via timing gates (with error correction processing algorithms), the phone app, and stopwatches.Results: There was an almost perfect correlation and agreement between timing gates and COD timer (r=0.978; SEE=0.035s; and LoA=−0.08~0.06s), but a lower correlation and agreement between timing gates and stopwatch (r=0.954; SEE=0.050s; and LoA=−0.17~0.04s) with statistical significance in completion time (ES=1.29, 95%CI: 1.15–1.43, p<0.01). The coefficient of variation revealed similar level of dispersion between the three timing devices (timing gates: 6.58%; COD timer: 6.32%; and stopwatch: 6.71%). Inter-observer reliability (ICC=0.991) and test-retest reliability (ICC=0.998) were excellent in COD timer, while the inter-observer reliability was lower (ICC=0.890) in the stopwatches.Conclusion: In the 505 COD test, the COD timer was able to provide a valid and reliable measurement. On the contrary, stopwatch was not recommended because of large error. Thus, if timing gates are unavailable, practitioners can adopt the COD timer app to assess 505 COD speed times.

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Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players

F1000Research ◽

10.12688/f1000research.23129.2 ◽

2021 ◽

Vol 9 ◽

pp. 624

Author(s):

Anthony Nicholls ◽

Anthony Leicht ◽

Jonathan Connor ◽

Aaron Halliday ◽

Kenji Doma

Keyword(s):

Physical Fitness ◽

High Intensity ◽

Convergent Validity ◽

Rugby League ◽

Intensity Change ◽

Validity And Reliability ◽

Intra Class Correlation ◽

Change Of Direction ◽

Test Retest Reliability ◽

Intra Class Correlation Coefficient

Background: : Rugby league involves repeated, complex, and high intensity change-of-direction (COD) movements with no existing test protocols that specifically assesses these multiple physical fitness components simultaneously. Thus, the current study examined the convergent validity of a repeated Illinois Agility (RIA) protocol with the repeated T-agility protocol, and the repeatability of the RIA protocol in adolescent Rugby League players. Furthermore, aerobic capacity and anaerobic and COD performance were assessed to determine whether these physical qualities were important contributors to the RIA protocol. Methods: Twenty-two junior Rugby League players completed 4 sessions with each separated by 7 days. Initially, physical fitness characteristics at baseline (i.e., Beep test,, countermovement jump, 30-m sprint, single-effort COD and repeated sprint ability [RSA]) were assessed. The second session involved a familiarisation of RIA and repeated T-agility test (RTT) protocols. During the third and fourth sessions, participants completed the RIA and RTT protocols in a randomised, counterbalanced design to examine the validity and test-retest reliability of these protocols. Results: For convergent validity, significant correlations were identified between RIA and RTT performances (r= >0.80; p<0.05). For contributors to RIA performance, significant correlations were identified between all baseline fitness characteristics and RIA (r = >0.71; p < 0.05). Reliability of the RIA protocol was near perfect with excellent intra-class correlation coefficient (0.87-0.97), good ratio limits of agreement (×/÷ 1.05-1.06) and low coefficient of variations (1.8-2.0%). Conclusions: The current study has demonstrated the RIA to be a simple, valid and reliable field test for RL athletes that can provide coaches with information about their team’s ability to sustain high intensity, multi-directional running efforts.

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Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players

F1000Research ◽

10.12688/f1000research.23129.3 ◽

2021 ◽

Vol 9 ◽

pp. 624

Author(s):

Anthony Nicholls ◽

Anthony Leicht ◽

Jonathan Connor ◽

Aaron Halliday ◽

Kenji Doma

Keyword(s):

Physical Fitness ◽

High Intensity ◽

Convergent Validity ◽

Rugby League ◽

Intensity Change ◽

Validity And Reliability ◽

Change Of Direction ◽

Multi Stage ◽

Test Retest Reliability ◽

Intra Class Correlation Coefficient

Background: : Rugby league involves repeated, complex, and high intensity change-of-direction (COD) movements with no existing test protocols that specifically assesses these multiple physical fitness components simultaneously. Thus, the current study examined the convergent validity of a repeated Illinois Agility (RIA) protocol with the repeated T-agility protocol, and the repeatability of the RIA protocol in adolescent Rugby League players. Furthermore, aerobic capacity and anaerobic and COD performance were assessed to determine whether these physical qualities were important contributors to the RIA protocol. Methods: Twenty-two junior Rugby League players completed 4 sessions with each separated by 7 days. Initially, physical fitness characteristics at baseline (i.e., Multi-stage Shuttle test, countermovement jump, 30-m sprint, single-effort COD and repeated sprint ability [RSA]) were assessed. The second session involved a familiarisation of RIA and repeated T-agility test (RTT) protocols. During the third and fourth sessions, participants completed the RIA and RTT protocols in a randomised, counterbalanced design to examine the validity and test-retest reliability of these protocols. Results: For convergent validity, significant correlations were identified between RIA and RTT performances (r= >0.80; p<0.05). For contributors to RIA performance, significant correlations were identified between all baseline fitness characteristics and RIA (r = >0.71; p < 0.05). Reliability of the RIA protocol was near perfect with excellent intra-class correlation coefficient (0.87-0.97), good ratio limits of agreement (×/÷ 1.05-1.06) and low coefficient of variations (1.8-2.0%). Conclusions: The current study has demonstrated the RIA to be a simple, valid and reliable field test for RL athletes that can provide coaches with information about their team’s ability to sustain high intensity, multi-directional running efforts.

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Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players

F1000Research ◽

10.12688/f1000research.23129.1 ◽

2020 ◽

Vol 9 ◽

pp. 624

Author(s):

Anthony Nicholls ◽

Anthony Leicht ◽

Jonathan Connor ◽

Aaron Halliday ◽

Kenji Doma

Keyword(s):

Physical Fitness ◽

Convergent Validity ◽

Rugby League ◽

Validity And Reliability ◽

Intra Class Correlation ◽

Change Of Direction ◽

Multi Stage ◽

Test Retest Reliability ◽

Intra Class Correlation Coefficient ◽

Baseline Fitness

Background: Rugby league involves repeated, complex, change-of-direction movements, although there are no test protocols that specifically assesses these physical fitness profiles. Thus, the current study examined the convergent validity and reliability of a repeated Illinois Agility (RIA) protocol in adolescent Rugby League players. Methods: Twenty-two junior Rugby League players completed 4 sessions with each separated by 7 days. Initially, physical fitness characteristics at baseline (i.e., multi-stage fitness, countermovement jump, 30-m sprint, single-effort agility and repeated sprint ability [RSA]) were assessed. The second session involved a familiarisation of RIA and repeated T-agility test (RTT) protocols. During the third and fourth sessions, participants completed the RIA and RTT protocols in a randomised, counterbalanced design to examine the validity and test-retest reliability of these protocols. Results: For convergent validity, significant correlations were identified between RIA and RTT performances (r= >0.80; p<0.05). For contributors to RIA performance, significant correlations were identified between all baseline fitness characteristics and RIA (r = >0.71; p < 0.05). Reliability of the RIA protocol was near perfect with excellent intra-class correlation coefficient (0.87-0.97), good ratio limits of agreement (×/÷ 1.05-1.06) and low coefficient of variations (1.77-1.97%). Conclusions: The current study has demonstrated the RIA to be a simple, valid and reliable field test that can provide coaches with information about their athlete’s ability to sustain high intensity, multi-directional running efforts.

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The Scar Cosmesis Assessment and Rating Scale To Evaluate The Cosmetic Outcomes of The Totally Thoracoscopic Cardiac Surgery

10.21203/rs.3.rs-34582/v1 ◽

2020 ◽

Author(s):

Ling-chen Huang ◽

Dao-zhong Chen ◽

Liang-wan Chen ◽

Qi-chen Xu ◽

Zi-he Zheng ◽

...

Keyword(s):

Cardiac Surgery ◽

Convergent Validity ◽

Rating Scale ◽

Statistical Significance ◽

Median Sternotomy ◽

Numeric Rating Scale ◽

Validity And Reliability ◽

Thoracoscopic Approach ◽

Axillary Incision ◽

The Right

Abstract Background Conventional median sternotomy is widely used in cardiac surgery, while the totally thoracoscopic cardiac surgery which is considered to have aesthetic advantages now is increasingly used in China because patients' requirements for minimally invasive and aesthetically pleasing are significantly increased. Fewer studies have been conducted on the assessment of surgical scars after cardiac surgery. Compared to a median sternotomy approach, multiple-incision totally thoracoscopic cardiac surgery offers smaller but numerous and scattered incisions. In addition to two working ports on the upper and lower margins of the right breast, we also need an inguinal incision and an axillary incision. So, does totally thoracoscopic cardiac surgery really have aesthetic advantages? This study has the following objectives: (a) to compare the long term cosmetic effect of post-operative scars between median sternotomy cardiac surgery and totally thoracoscopic cardiac surgery; (b) to evaluate the effectiveness of the Scar Cosmesis Assessment and Rating(SCAR) scale, in combination with the Numeric Rating Scale(NRS) in the assessment of surgical scars after cardiac surgery. Methods Collection of consecutive patients who came to our institution from January 2019 to May 2019 for cardiac surgery via median sternotomy or totally thoracoscopic approach for at least one year of follow-up. Inter-rater reliability, internal consistency and convergent validity were evaluated for the SCAR scale and the NRS. Clinic characteristics and the scores of the SCAR scale and the NRS were analyzed using the Student's t test or Mann-Whitney U-test between the two groups. Results Thirty-one patients underwent cardiac surgery via a totally thoracoscopic approach (TA n = 31), and forty-two patients via a median sternotomy approach (SA n = 42). No significant differences were found in demographic and clinical data between the two groups. Validity and reliability of the SCAR scale and the NRS were satisfactory. The results of the SCAR scale showed that SA group scored significantly higher than TA group on “overall impression” and “patient questions” subscales with statistical significance (P < 0.05). The overall SCAR scale scores and the NRS scores were statistically significant (P < 0.05). Conclusions The SCAR scale in combination with the NRS is an effective tool for assessment of scar aesthetics after cardiac surgery. Surgical scars of totally thoracoscopic cardiac surgery can achieve desirable cosmetic effects in Chinese population. Especially in susceptible individuals with high risk of keloid and hypertrophic scars. Patients with appropriate indications can undergo cardiac surgery through the totally thoracoscopic approach and obtain a satisfactory scar appearance.

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Validity and Reliability of the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE)

GeroPsych ◽

10.1024/1662-9647/a000209 ◽

2019 ◽

Vol 32 (3) ◽

pp. 145-151

Author(s):

Mahshid Foroughan ◽

Zahra Jafari ◽

Ida Ghaemmagham Farahani ◽

Vahid Rashedi

Keyword(s):

Psychometric Properties ◽

Elderly Population ◽

Formal Education ◽

The Elderly ◽

Cognitive State ◽

Validity And Reliability ◽

Internal Reliability ◽

Dsm Iv ◽

Test Retest Reliability ◽

Farsi Version

Abstract. This study examines the psychometric properties of the IQCODE and its applicability in the Iranian elderly population. A group of 95 elderly patients with at least 4 years of formal education who fulfilled the criteria of DSM-IV-TR for dementia were examined by the MMSE and the AMTs. The Farsi version of the IQCODE was subsequently administered to their primary caregivers. Results showed a significant correlation ( p = .01) between the score of the questionnaire and the results of the MMSE ( r = −0.647) and AMTs ( r = −0.641). A high internal reliability of the questionnaire was confirmed by Cronbach’s alpha coefficient (α = 0.927) and test-retest reliability by correlation coefficient ( r = 0.81). This study found that the IQCODE has acceptable psychometric properties and can be used for evaluating the cognitive state in the elderly population of Iran.

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The Latin Square Task as a Measure of Relational Reasoning

European Journal of Psychological Assessment ◽

10.1027/1015-5759/a000520 ◽

2020 ◽

Vol 36 (2) ◽

pp. 296-302 ◽

Cited By ~ 1

Author(s):

Luke J. Hearne ◽

Damian P. Birney ◽

Luca Cocchi ◽

Jason B. Mattingley

Keyword(s):

Brain Imaging ◽

Response Times ◽

Latin Square ◽

Error Rates ◽

Functional Brain Imaging ◽

Inspection Time ◽

Relational Reasoning ◽

Validity And Reliability ◽

The Stability ◽

Test Retest Reliability

Abstract. The Latin Square Task (LST) is a relational reasoning paradigm developed by Birney, Halford, and Andrews (2006) . Previous work has shown that the LST elicits typical reasoning complexity effects, such that increases in complexity are associated with decrements in task accuracy and increases in response times. Here we modified the LST for use in functional brain imaging experiments, in which presentation durations must be strictly controlled, and assessed its validity and reliability. Modifications included presenting the components within each trial serially, such that the reasoning and response periods were separated. In addition, the inspection time for each LST problem was constrained to five seconds. We replicated previous findings of higher error rates and slower response times with increasing relational complexity and observed relatively large effect sizes (η2p > 0.70, r > .50). Moreover, measures of internal consistency and test-retest reliability confirmed the stability of the LST within and across separate testing sessions. Interestingly, we found that limiting the inspection time for individual problems in the LST had little effect on accuracy relative to the unconstrained times used in previous work, a finding that is important for future brain imaging experiments aimed at investigating the neural correlates of relational reasoning.

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Correlation of Metabolic Risk Factors with Sessile Serrated Lesions

Journal of Gastrointestinal and Liver Diseases ◽

10.15403/jgld-507 ◽

2020 ◽

Vol 29 (2) ◽

pp. 175-179

Author(s):

Melania Macarie ◽

Simona Bataga ◽

Simona Mocan ◽

Monica Pantea ◽

Razvan Opaschi ◽

...

Keyword(s):

Risk Factors ◽

Statistical Significance ◽

Interval Cancer ◽

Metabolic Risk Factors ◽

Control Group ◽

Anatomical Site ◽

Metabolic Risk ◽

Right Colon ◽

Serrated Lesions ◽

The Right

Background and Aims: The importance of sessile serrated lesions (SSLs) in the pathogenesis of colorectal carcinoma has been recently established. These are supposed to cause the so-called “interval cancer”, having a rapidly progressive growth and being difficult to detect and to obtain an endoscopic complete resection. We aimed to establish the most important metabolic risk factors for sessile serrated lesions. Methods: We performed a retrospective case-control study, on a series of 2918 consecutive patients who underwent colonoscopy in Gastroenterology and Endoscopy Unit, County Clinical Emergency Hospital, Târgu-Mureș, Romania between 1 st of January 2015-31 th of December 2017. In order to evaluate the metabolic risk factors for polyps’ development, enrolled participants were stratified in two groups, a study group, 33 patients with SSLs lesions, and a control group, 138 patients with adenomatous polyps, selected by systematic sampling for age and anatomical site. Independent variables investigated were: gender, smoking, alcohol consumption, obesity, arterial hypertension, diabetes, hypercholesterolemia, hypertriglyceridemia, hyperuricemia, nonalcoholic liver disease. Results: For SSLs the most common encountered localization was the right colon in 30.55% of cases. By comparative bivariate analysis between SSLs group and control group, it was observed that hypertension (p=0.03, OR 2.33, 95 %CI 1.03-5.24), obesity (p=0.03, OR 2.61, 95 %CI 1.08-6.30), hyperuricemia (p=0.04, OR 2.72, 95 %CI 1.28-7.55), high cholesterol (p=0.002, OR 3.42; 95 %CI 1.48-7.87), and high triglycerides level (p=0.0006, OR 5.75; 95 %CI 1.92-17.2) were statistically associated with SSLs development. By multivariate analysis hypertension and hypertriglyceridemia retained statistical significance. Conclusions: Our study showed that the highest prevalence of SSLs was in the right colon and hypertension and increased triglycerides levels were associated with the risk of SSLs development. These risk factors are easy to detect in clinical practice and may help identifying groups with high risk for colorectal cancer, where screening is recommended.

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Adolescent athletes and nutrition – analysis of two groups of children

SPORT AND SOCIETY ◽

10.36836/2020/1/3 ◽

2020 ◽

pp. 1-6

Author(s):

Tatyana Dzimbova

Keyword(s):

Energy Expenditure ◽

Energy Intake ◽

Eating Habits ◽

Energy Deficit ◽

Young Athletes ◽

Adolescent Athletes ◽

Basketball Players ◽

Calcium Magnesium ◽

The Right

Introduction. Proper nutrition is crucial for child and adolescent athletes to maintain growth and development and to achieveoptimal results in sports. It is very important to balance the energy expenditure with the energy intake in order to prevent the energy deficit or excess.Materials and methods. Subjects involved in two different sports participated in the study: 13 gymnasts (age 13.8 ± 4.1 years, height 153.4 ± 11.3 cm, weight 47.1 ± 10.5 kg) and 15 basketball players (age 15.5 ± 1.1 years, height 176.7 ± 7.9 cm, weight 65.2 ± 10.7 kg). Determination of total energy expenditure was made by prediction equations. The subjects maintained a food records for 5 consecutive days, which were processed in the ASA24 system of the NCI. Results and discussion. Energy intake in both groups is sufficient to meet the daily needs, development of young athletes andprovide the energy needed in training. The intake of three minerals (calcium, magnesium and potassium) and three vitamins (D, E and A) was lower than recommended values in both groups.Conclusion. As a result of the busy schedule of adolescent athletes, their main meals are out of home, and the proportion of highly processed foods containing small amounts of important vitamins and minerals is high. The main recommendations include dairy products, fruits, vegetables and whole grains. The idea behind the changes is to give young athletes the right diet and the right eating habits.

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Awareness of radiation doses and risks among radiology residents, fellows, specialists, consultants and technologists in Jeddah, Saudi Arabia: Cross-Sectional Study. (Preprint)

10.2196/preprints.14460 ◽

2019 ◽

Author(s):

Bashayer Hassan Shuaib ◽

Rahaf Hisham Niazi ◽

Ahmed Haitham Abduljabbar ◽

Mohammed Abdulraheem Wazzan

Keyword(s):

Interventional Radiology ◽

Ionizing Radiation ◽

Statistical Significance ◽

Knowledge Score ◽

P Value ◽

Radiation Doses ◽

Cross Sectional ◽

The Right ◽

Interventional Radiology Procedures ◽

Radiology Staff

BACKGROUND Radiology now plays a major role to diagnose, monitoring, and management of several diseases; numerous diagnostic and interventional radiology procedures involve exposure to ionizing radiation. Radiology now plays a major role to diagnose, monitoring, and management of several diseases; numerous diagnostic and interventional radiology procedures involve exposure to ionizing radiation. OBJECTIVE This study aimed to discover and compare the awareness level of radiation doses, protection issues, and risks among radiology staff in Jeddah hospitals. METHODS A cross-sectional survey containing 25 questions on personal information and various aspects of radiation exposure doses and risks was designed using an online survey tool and the link was emailed to all radiology staff in eight tertiary hospitals in Jeddah. The authors were excluded from the study. A P-value of < .05 was used to identify statistical significance. All analyses were performed using SPSS, version 21. RESULTS Out of 156 participants the majority 151 (96.8%) had poor knowledge score, where the mean scores were 2.4±1.3 for doses knowledge, 2.1±1.1for cancer risks knowledge, 2.3±0.6 for general information, and 6.7±1.9 for the total score. Only 34.6% of the participants were aware of the dosage of a single-view chest x-ray, and 9.0% chose the right answer for the approximate effective dose received by a patient in a two-view. 42.9% were able to know the correct dose of CT abdomen single phase. There is a significant underestimation of cancer risk of CT studies especially for CT abdomen where only 23.7% knew the right risk. A p-value of <0.05 was used to identify statistical significance. No significant difference of knowledge score was detected regarding gender (P =.2) or work position (P=.66). CONCLUSIONS Our survey results show considerable inadequate knowledge in all groups without exception. We recommended a conscientious effort to deliver more solid education and obtain more knowledge in these matters and providing periodic training courses to teach how to minimize the dose of radiation and to avoid risk related. CLINICALTRIAL not applicable

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Pengembangan instrumen evaluasi kinerja pada Perpustakaan Universitas Kristen Satya Wacana Salatiga

Berkala Ilmu Perpustakaan dan Informasi ◽

10.22146/bip.v16i1.61 ◽

2020 ◽

Vol 16 (1) ◽

pp. 1-15

Author(s):

Anton Hermawan ◽

Anggita Kristiasari ◽

Fransiska N. Bhiju ◽

Dona Manik

Keyword(s):

Performance Evaluation ◽

Performance Appraisal ◽

Performance Standards ◽

Assessment Instrument ◽

Evaluation Instrument ◽

Validity And Reliability ◽

Professional Perspective ◽

Evaluation Instruments ◽

The Right ◽

Good Organization

Introduction. Performance evaluation is the process of evaluating the implementation of the tasks of organizational members, including libraries, in accordance with the performance standards using particular way including instruments. Instruments are needed to document the evaluation carried out by the organization. Therefore, libraries need to pay attention to developa performance evaluation instrument to plan their human resources. This research explains an overview of stages in developing performance evaluation instruments in an organization, particularly libraries. Research methods. The research used a descriptive qualitative approach by involving the existing performance evaluation dimensions. After that, the performance evaluation indicators were developed. Data analysis. The measurement of validity and reliability was valid when the correlation between items was >0.3 and when Cronbach alpha was > 0.6. The measurement of validity and reliability help to support the development of performance evaluation instruments. Results and Discussion. Of the 36 statements, only 27 items were valid and used in performance appraisal instruments. The items are arranged in a model of development of the performance evaluation instruments. Conclusion and recommendations. A good organization needs to pay attention to the right indicators in an assessment instrument. In its application, it is effective to use the 360 degree method, where employees are evaluated by other staff to ensure the balance professional perspective.

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