ABSTRACT
Malnutrition is owing to an alimentation regarding quantity and quality food. To examine the different forms of malnutrition among Tunisian boys of the north and south regions, to form an idea about the state of their health and their living conditions. Our empirical investigation was carried out on 1082 northern boys and 1016 southern boys, aged from 10 to 14 years including 1057 non pubescent boys and 1041 prepubescent boys. Age, weight and height were recorded for the entire population according to the norms of the standard World Health Organization and the nutritional status of these young was described by two indices: Height for age and body mass index for age. The classification used to describe the build is the Cachera Rolland, Malnutrition are significantly more pronounced among the southern boys than their counterparts in the North. Particularly, short stature [19.2% vs 14.4%] and underweight [28% vs 22.5 %]. However, the risk of overweight and obesity is more pronounced among the northern boys. However, the comparison between non pubescent and prepubescent boys shows that the prevalence of stunting increases with age. The mechanisms responsible for these inter-individual differences beings regions appear related to living conditions during the first year after birth, particularly, socio-economic status, family size, type of housing, and the education level of parents
ABSTRACT
The aim of this study was to investigate the effect of a combined program including sprint repetitions and drop jump training in the same session on male handball players. Twenty-two male handball players aged more than 20 years were assigned into 2 groups: experimental group [n=11] and control group [n=11]. Selection was based on variables "axis" and "lines", goalkeepers were not included. The experimental group was subjected to 2 testing periods [test and retest] separated by 12 weeks of an additional combined plyometric and running speed training program. The control group performed the usual handball training. The testing period comprised, at the first day, a medical checking, anthropometric measurements and an incremental exercise test called yo-yo intermittent recovery test. 2 days later, participants performed the Repeated Sprint Ability test [RSA], and performed the Jumping Performance using 3 different events: Squat jump [SJ], Countermovement jump without [CMJ] and with arms [CMJA], and Drop jump [DJ]. At the end of the training period, participants performed again the repeated sprint ability test, and the jumping performance. The conventional combined program improved the explosive force ability of handball players in CMJ [P=0.01], CMJA [P=0.01] and DJR [P=0.03]. The change was 2.78, 2.42 and 2.62% respectively. No significant changes were noted in performances of the experimental group at the squat jump test and the drop jump with the left leg test. The training intervention also improved the running speed ability of the experimental group [P=0.003]. No statistical differences were observed between lines or axes. Additional combined training program between sprint repetition and vertical jump in the same training session positively influence the jumping ability and the sprint ability of handball players