Predictors of Response to an Intervention Modifying Physical Activity and Sedentary Behavior in Overweight/Obese Children: Attitudes vs. Behavior

in Journal of Physical Activity and Health
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Objective:

To compare liking and other attitudes toward physical activity (PA) and television (TV) viewing versus PA behavior and time viewing TV at baseline as predictors of response to lifestyle intervention in 30, 8 to 12 year old overweight/obese children.

Method:

Secondary analyses from a randomized controlled trial designed to increase PA and reduce sedentary behavior. PA was measured by accelerometers worn by participants every day for 8 weeks. TV viewing at baseline and during intervention was assessed by self-report.

Results:

Multiple regression analyses showed that base rates of PA and TV viewing significantly predicted changes in PA (Beta = .39, P < .05) and TV viewing (Beta = .37, P < .05) during the intervention, even after statistically controlling for child age, gender, body mass index, as well as baseline attitudes and liking of PA and TV viewing. However, self-reported liking of TV viewing and PA, perceived adequacy, and predilection were not predictive of response to intervention.

Conclusions:

Baseline measure of PA and TV viewing behaviors may be better predictors of response to lifestyle intervention than measure of liking and other attitudinal variables of PA. The theoretical and clinical implications of these findings are discussed.

The author is with the Children’s Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.

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