The purpose of this study is describe the initial feasibility, reliability, and validity of an instrument to measure physical activity in preschoolers using direct observation. The System for Observing Fitness Instruction Time for Preschoolers was developed and tested among 3- to 6-year-old children over fall 2008 for feasibility and reliability…

Internationally, mass media campaigns to promote regular moderate-intensity physical activity have increased recently. Evidence of mass media campaign effectiveness exists in other health areas, however the evidence for physical activity is limited. The purpose was to systematically review the literature on physical activity mass media campaigns,…

The present study explores the validity of a recent stages of change (SoC) measure and algorithm among a sample of late adolescents. MANOVA and structural equation modeling are used to assess the relationship between five SoC groups (precontemplation, contemplation, preparation, action, and maintenance) and a set of dependent measures including…

Subjective Task Value (STV) is a multidimensional construct of values predominantly used to examine western culture (Eccles et al., 1983); it is influential in motivating individuals to make choices and display long-lasting behaviours. While existing studies were conducted with western populations, the manifestation of value has yet to be…

Background: Most physical activity recall questionnaires assess activity over a 7-day period. However, questionnaires have been validated in adolescents and adults using shorter recall timeframes. Purpose: The purpose of this study was to assess the validity of a self-administered 3-day physical activity recall instrument (3DR) in young adults.…

The purpose of this review is to integrate and summarize specific measurement topics (instrument and metric choice, validity, reliability, how many and what types of days, reactivity, and data treatment) appropriate to the study of youth physical activity. Research quality pedometers are necessary to aid interpretation of steps per day collected…

The purpose was to examine psychosocial factors that influence the physical activity behaviors of adults with brain injuries. Two differing models, based on Harter's model of self-worth, were proposed to examine the relationship between perceived competence, social support, physical self-worth, affect, and motivation. Adults numbering 384 with…

This study was designed to test the validity of a transtheoretical model's physical activity (PA) stage measure with intention and different intensities of behavior in a large population-based sample of adults living with diabetes (Type 1 diabetes, n = 697; Type 2 diabetes, n = 1,614) and examine different age groups. The overall…

This study examined the reliability and validity of the National College Health Risk Behavior Survey (NCHRBS) vigorous physical activity (VPA), moderate physical activity (MPA), flexibility (FLEX), and muscular strength and/or endurance (MSE) questions. Twenty college students completed the four items twice during the same day. During the next 7…

A Daily Physical Activity (DPA) Initiative was implemented in all schools in Alberta starting in September 2005. The expected outcome of the DPA Initiative is to increase the activity levels and healthy habits of students and, in part, address related issues such as chronic disease. As part of the first tier of the DPA Initiative evaluation study,…