Relationships Among Extreme Sports Participation, Sensation Seeking, and Negative Risky Behaviors of Middle-School Students.

Objective: The aim was to investigate the relationships among extreme sports participation, sensation seeking, and negative risky behaviors (smoking, drinking alcohol, and gambling) for middle-school students. Methods: Using a convenience sampling procedure, all students from a middle school in a district of Chongqing were selected to participate in the survey, which included questions on their extreme sports participation rate, and smoking, drinking alcohol, and gambling behavior. Results: A sample of 2,987 middle-school students participated in this study. The results showed that the proportions of students participating in extreme sports, smoking, drinking alcohol, and gambling were 19.9, 4.8, 18.4, and 3.0%, respectively. There were significant differences between different genders, schools, place of residence, smoking, drinking, gambling, and sensation seeking of the participation rate of students of extreme sports, the rate of boys, junior middle-school students, urban students, smokers, alcohol drinkers, gamblers, and high-sensation-seeking students were relatively higher than that of girls, senior middle-school students, rural students, no-smokers, no-alcohol drinkers, no-gamblers, and low-sensation-seeking students. Alcohol drinking, gambling, and sensation seeking were associated with extreme sports participation, and the students who drank alcohol, who gambled, and who were high sensation seeking were more likely to participate in extreme sports than those who did not drink alcohol, who did not gamble, and who were low sensation seeking. Conclusion: Middle schools should integrate extreme sports education into physical education and risky-behavior education, strengthen relevant knowledge and safety training, and guide students to meet their sensation-seeking needs through participation in extreme sports instead of risky behaviors.

[Reconstruction of facial soft tissue defects with pedicled expanded flaps].

OBJECTIVE: To investigate the application of pedicled expanded flaps for the reconstruction of facial soft tissue defects. METHODS: The expanded skin flaps, pedicled with orbicularis oculi muscle, submental artery, the branch of facial artery, superficial temporal artery, interior upper arm artery, had similar texture and color as facial soft tissue. The pedicled expanded flaps have repaired the facial soft tissue defects. RESULTS: Between Jan. 2003 to Dec. 2013, 157 cases with facial soft tissue defects were reconstructed by pedicled expanded flaps. Epidermal necrosis happened at the distal end of 8 expanded flaps, pedicled with interior upper arm artery(4 cases), orbicularis oculi muscle(3 cases) and submental artery(1 case), which healed spontaneously after dressing. All the other flaps survived completely with similar color and inconspicuous scar. 112 cases were followed up for 8 months to 8 years. Satisfactory results were achieved in 75 cases. 37 cases with hypertrophic scar at incisions need secondary operation. CONCLUSIONS: Island pedicled expanded flap with similar texture and color as facial soft tissue is suitable for facial soft tissue defects. The facial extra-incision and large dog-ear deformity could be avoided.