Purpose This study was undertaken to examine the validity of accelerometry in assessing moderate intensity physical activity in the field and to evaluate the metabolic cost of various recreational and household activities. Methods Twenty-five subjects completed four bouts of overground walking at a range of self-selected speeds, played two holes ...
Using the latest technology, researchers are uncovering evidence of exactly how major a role activity plays in the battle to keep obesity at bay. In new report published in the British Medical Journal, scientists have shown that it's the type of exercise you do, rather than the amount, that's most ...
Purpose The Trial for Activity in Adolescent Girls (TAAG) is a multi-center group-randomized trial to reduce the usual decline in moderate to vigorous physical activity (MVPA) among middle-school girls. In group-randomized trials, the group-level intraclass correlation (ICC) has a strong inverse relationship to power and a good estimate of ICC ...
Purpose This study was designed to evaluate the efficacy of a revised algorithm (Heil MSSE 33:S 168, 2001) for transforming data from CSA activity monitors (Model 7164-1.2) into measures of workshift activity (EEACT, kcals shift4) and total (EETQT, kcalsdaf1) energy expenditure in wild land firefighters during extended periods of actual wild land ...
Opportunities for children to be physically active during school time are sparse and becoming increasingly so. The purpose of this investigation was to determine if children would compensate for school days (9 a.m. - 3 p.m.) of restricted physical activity opportunities by increasing activity levels after school (3 p.m. - 7 ...
Objective The purpose of this study is to determine reproducibility and relative validity of the Short Questionnaire to Assess Health enhancing physical activity (SQUASH). Methods Participants (36 men and 14 women, aged 27–58) were asked to complete the SQUASH twice with an in between period of approximately 5 weeks. In addition, participants wore the ...
Purpose The purpose of this study was to assess the reliability and convergent validity of the NCHRBS physical activity items. Methods Forty-five college students (25 females, 20 males) completed the physical activity items twice during the same day, with approximately 2 hours between administrations. In addition, 20 college students (9 females, age: 24.1 ± 3.5 y, BMI: 27.9 ± 6.4; 11 males, ...
Accelerometry has been proposed as an objective method for measurement of physical activity. Intra- and inter-instrument reliability and validity of the Computer Science and Applications (CSA) Model 7164 accelerometer, along with the nature of the analogue filter in the device, was studied with sinusoidal movements in a mechanical setting. Six CSA ...
Introduction Few questionnaires have been designed for wide-scale, population-based surveillance of occupational physical activity (PA) behaviors. Purpose This study was conducted to determine the test-retest reliability and validity of the Occupational Physical Activity Questionnaire (OPAQ) designed to assess the usual weekly duration of occupational sitting or standing, walking, and heavy ...
Introduction Numerous studies have examined the validity of accelerometry-based activity monitors but few studies have systematically studied the reliability of different accelerometer units for assessing a standardized bout of physical activity. Improving understanding of error in these devices is an important research objective because they are increasingly being used in ...