Preventive medicine
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Preventive medicine · Jan 2009
ReviewMonitoring the tobacco use epidemic III: The host: data sources and methodological challenges.
This Host paper (III of V) reviews key surveillance and evaluation systems that monitor the characteristics, attitudes and behaviors of tobacco users that are crucial for tobacco control efforts. ⋯ Although the field of tobacco control research is an advanced area of public health, improvements in data systems are necessary to accurately evaluate progress and continue tobacco control gains. A coordinated surveillance and evaluation network would increase efficiency and improve the overall utility, quality and timeliness of the current data systems.
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Preventive medicine · Jan 2009
Self-determined motivation and students' physical activity during structured physical education lessons and free choice periods.
Various organizations have suggested that physical education (PE) should play a central role in increasing adolescents' physical activity (PA) levels. The purpose of this study was to examine relationships between students' self-determined motivation and their PA behavior during a structured PE lesson led by their teacher and a free-choice period in which they were not required to be active. ⋯ Findings indicated that promoting self-determined motivation may be an effective means of ensuring that PE programs are able to increase PA levels, foster self-initiated PA behaviors, and enhance adolescents' health.