Background: Physical activity (PA) is an important agent in the prevention of chronic diseases such as obesity. Objectives: To provide preliminary data on PA among school children and to correlate the PA with weight status. Material and Methods: A total of 40 children aged between 8 and 11 years and attending Tunisian schools were recruited. The body composition was determined by using the deuterium oxide dilution technique. PA was determined by the PAQ-C (PA Questionnaire for Older Children). An objective monitoring of PA and sedentary time was achieved by using ActiGraph GT3X + accelerometers. Results: PAQ-C data demonstrate that 20% of the sample had light PA levels and 80% had moderate PA levels. Times spent in sedentary (62.37%) and light (30.80%) activities were higher than that spent in moderate and vigorous (6.83%) activities. Furthermore, almost half of the sample spent more than 60 min per day in moderate-to-vigorous intensity PA (MVPA). The average MVPA was significantly higher in normal weight than overweight and obese groups (67.68 ± 20.98 vs. 49.07 ± 19.09, p = 0.007). The proportion of overweight children who spent more than 60 min per day in MVPA was significantly higher than that of normal-weight (60.9 vs. 29.4%; p = 0.049). Conclusion: This study indicates that half of school children comply with the health-based guidelines for PA and sedentary behavior. Our findings also suggest that obesity was associated with decrease in PA in Tunisian children.

Background: Diabetes mellitus is one of the most common endocrinal disorders and medicinal plants continue to play an important role in the management of this disease. In this study, Rosa canina was investigated for the antioxidant and α-amylase inhibition activities. Materials and Methods: Methanolic extract of Rosa canina was investigated for its potential antioxidant activity. The extracts' total phenolic and flavonoid contents and scavenging capacity for free radicals were evaluated. The α-amylase inhibition assay was also carried. Results: Rosa canina extract exhibits a total Phenolic and flavonoid levels respectively (21.918 mg GAE/g and 2.647mg ER/g). The free radical scavenging activity was found to be prominent against DPPH with an IC50 of 0.668 mg/ml and against ABTS with an IC50 of 0.467 mg/ml. Extract showed a significant ferric ion reducing activities with an IC50 of4.962 mg/ml. Conclusion: Rosa canina exerted a higher inhibitory activity against α-amylase. The obtained results support the antidiabetic use of rosa canina.

RÉSUMÉ Nous avons évalué les connaissances, les attitudes et les pratiques de femmes primipares vis-à-vis de l'allaitement maternel exclusif et du lait artificiel. Au total, 260 femmes ont été interrogées. Les résultats montrent que 41,5 % de ces femmes utilisent en exclusivité l'allaitement maternel et 58,5 % utilisent le lait artificiel seul ou en complément au lait maternel. Parmi les mères qui allaitent, 43,0 % n'ont donné le sein pour la première fois que le lendemain de l'accouchement et n'ont aucune information sur le colostrum. Les connaissances, les attitudes et les pratiques des mères primipares sont insatisfaisantes concernant les règles à suivre lors de la mise au sein de l'enfant, la durée idéale de l'allaitement maternel exclusif et les aliments essentiels à introduire lors du début de la diversification de l'alimentation du nourrisson. Cela pourrait être dû entre autres à un niveau d'information et de scolarisation faible, d'où l'intérêt de l'amélioration des stratégies de prise en charge des jeunes mères durant les phases pré-et post-natales. Exclusive breastfeeding and mixed feeding: knowledge, attitudes and practices of primiparous mothers ABSTRACT We assessed the knowledge attitudes and practices of primiparous women with regard to exclusive breastfeeding and the use of formula milk. A total of 260 women were interviewed and the results showed that 41.5% of the women breastfed exclusively while 58.5% bottle-fed only or did so together with breastfeeding. Of those who breastfed, 43.0% did not do so soon after giving birth and did not know about colostrum. Overall, the knowledge, attitudes and practices of the mothers were unsatisfactory concerning the golden rules for successful breastfeeding, the ideal duration of exclusive breastfeeding and the food to include when introducing complementary feeding. This might be due to a low level of schooling and information, hence the need for improving strategies for maternal care during the antenatal and postnatal periods.‫املتوسط‬ ‫لرشق‬ ‫الصحية‬ ‫املجلة‬ ‫عرش‬ ‫السادس‬ ‫املجلد‬ ‫السادس‬ ‫العدد‬ 631

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