RESUMEN
Introduction. School environments may impact elementary school students' attachment levels to school as well as their mental and emotional well-being. Yet investments in recess/play infrastructure lag commitments to academic resources, particularly in developing countries. The main objective was to examine the impact of installing playground equipment, in the school yard, on students' attitudes toward school, peers, and the capacity to play of elementary-school children in an underserved, inner-city school in Chennai, India. Methods. A previously validated school attachment questionnaire was modified and administered to 140 and 148 students in pre- and post-playground installation, respectively. Results. For 7 out of 13 survey questions, student attitudes about their own recreational time and their attitudes toward peers significantly improved after playground installation. Conclusion. These results highlight the need for investments in play spaces, and recreational equipment may be just as important as addressing academic needs, especially among underserved children.
RESUMEN
BACKGROUND/MAIN OBJECTIVES: No effective strategy exists to treat the well-recognized, devastating impact of traumatic brain injury (TBI) and chronic traumatic encephalopathy (CTE), which is the brain degeneration likely caused by repeated head trauma. The goals of this project were (1) to study the effects of single and recurrent TBI (rTBI) on Drosophila melanogaster's (a) life span, (b) response to sedatives, and (c) behavioral responses to light and gravity and (2) to determine whether therapeutic hypothermia can mitigate the deleterious effects of TBI. METHODS: Five experimental groups were created: (1) control, (2) single TBI or concussion; (3) concussion + hypothermia, (4) rTBI, and (5) rTBI + hypothermia. A "high-impact trauma" (HIT) device was built, which used a spring-based mechanism to propel flies against the wall of a vial, causing mechanical damage to the brain. Hypothermia groups were cooled to 15°C for 3 minutes. Group differences were analyzed with chi-square tests for the categorical variables and with ANOVA tests for the continuous variables. RESULTS: Survival curve analysis showed that rTBI can decrease Drosophila lifespan and hypothermia diminished this impact. Average sedation time for control vs concussion vs concussion + hypothermia was 78 vs 52 vs 61 seconds (P < .0001). Similarly, rTBI vs rTBI/hypothermia groups took 43 vs 59 seconds (P < .0001). Concussed flies preferred dark environments compared with control flies (risk ratio 3.3, P < .01) while flies who were concussed and cooled had a risk ratio of 2.7 (P < .01). Flies with rTBI were almost 4 times likely to prefer the dark environment but only 3 times as likely if they were cooled, compared with controls. Geotaxis was significantly affected by rTBI only and yet less so if rTBI flies were cooled. CONCLUSIONS: Hypothermia successfully mitigated many deleterious effects of single TBI and rTBI in Drosophila and may represent a promising breakthrough in the treatment of human TBI.