Dr. Stewart G. Trost

author Stewart G. Trost, Ph.D., FACSM.
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Trost said he and his study team plan to conduct research to better

That finding was not the only surprise, according to lead researcher Stewart Trost, Ph.D., FACSM."Students averaged about 20 minutes of moderate-to-vigorous physical activity, or MVPA, per 90-minute session," he said.
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According to Trost, this may reflect a relative lack of training of those who staff after-school programs."They may be college students or part-time workers who are not trained in physical education," he explained.Trost proposed translating his research into practice by developing simple training materials for after-school workers.Such materials, he said, could offer ideas and techniques for increasing students' physical activity levels.

Previous studies have observed overweight children tend to be less active than their non-overweight counterparts.Trost et al., however, found that students who were overweight or at risk for being overweight exhibited similar amounts of light- and moderate-intensity physical activity as non-overweight students, but had significantly lower amounts of vigorous activity, particularly during organized outdoor activities.

Trost recommended further research to measure after-school activity levels of children who are not enrolled in after-school programs.

At a recent Nutrition Australia seminar held in Brisbane, one of the keynote speakers, Dr. Stewart Trost, a researcher, from the School of Human Movement Studies at the University of Queensland, stated "simply limiting television watching time does not make children more physically active.Parents need to make sure that children replace some of the television watching with ‘getting outdoors' more.Studies show once children are playing outside in the garden they increase their physical activity."According to Dr. Trost, "while children remain indoors they will usually replace their television watching with another sedentary activity."