The study was conducted at the University of Southern California (USC) and appears in the journal Child Development.
Researchers looked at 1,260 ethnically diverse, urban, middle-class sixth through eighth graders. They asked the students about their own smoking behavior, and they asked them to name friends at school as well as the organized sports they took part in at school. Then, using a social network method they developed, they examined how participation in sports with teammates who smoked affected adolescents' smoking behavior.
They found that youths were more likely to smoke as they were increasingly exposed to teammates who smoked, and that this tendency may be stronger among girls than boys. But they also found that youths who took part in a greater number of sports were less likely to smoke than those who participated in fewer.
"This result suggests that peers on athletic teams influence the smoking behavior of others even though there might be a protective effect overall of increased participation in athletics on smoking," according to Kayo Fujimoto, assistant professor of health promotion and behavioral sciences at the University of Texas Health Science Center at Houston, who led the study when she was at USC.
The study has implications for programs aimed at preventing teens from smoking. "Current guidelines recommend the use of peer leaders selected within the class to implement such programs," Fujimoto points out. "The findings of this study suggest that peer-led interactive programs should be expanded to include sports teams as well."
Sarah Hutcheon | EurekAlert!
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05.04.2018 | Leibniz-Institut für Ostseeforschung Warnemünde
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
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Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.
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University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
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Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
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