The reliability of the reactive strength index (RSI) and time to stabilization (TTS) during maximal-effort plyometric depth jumps was examined. Twenty-two subjects performed three depth jumps from a height of 30 cm. Measures such as height of jump (JH), ground-contact time (CT), RSI, and TTS were obtained and analyzed for reliability using Cronbach alpha reliability coefficient and intraclass c...

BACKGROUND In countless number of clinical trials, measurements of outcomes rely on instrument questionnaire items which however often suffer measurement error problems which in turn affect statistical power of study designs. The Cronbach alpha or coefficient alpha, here denoted by C(α), can be used as a measure of internal consistency of parallel instrument items that are developed to measure ...

OBJECTIVE To translate into Arabic and validate the SF-36 quality of life index in a Tunisian Arabic population. BACKGROUND No validated Arabic quality of life index is published. DESIGN Arabic translation of the SF-36 scale was obtained by the "forward/backward translation" method. Adaptations were made after a pilot study involving 22 subjects from general population. Inter-rater reliabil...

OBJECTIVE To carry out initial psychometric testing on the Simple Lifestyle Indicator Questionnaire (SLIQ). DESIGN Self-administered questionnaire to obtain data for test-retest reliability, for Cronbach alpha testing on completed questionnaires, and for blinded external validity testing. SETTING Kingston, Ont, and surrounding area. PARTICIPANTS One hundred thirty-six family practice pati...

The aim of this study was to develop a scale to determine the educational usage of mobile communication apps among teacher candidates. 52 draft statements were prepared by researchers through literature review and opinions of teacher candidates. Statements were reduced to 40 statements based on expert opinions. The draft scale was administered to 412 teacher candidates who applied to the Pedago...

BACKGROUND This study was planned in an attempt to develop a scale for the quality of life in pediatric oncology patients aged 7-12, with child and parents forms. MATERIALS AND METHODS In collecting the study data, we used the Child and Parent Information Form, Visual Quality of Life Scale, Scale for Quality of Life Pediatric Oncology Patients Aged 7-12 and the Scale for the Quality of Life i...