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Effectiveness and time-course adaptation of resistance training vs. plyometric training in prepubertal soccer players

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Journal of Sport and Health Science 2020年第6期9卷 620-627页

作者： Yassine Negra Helmi Chaabene Thomas Stöggl Mehréz Hammami mohamed souhaiel chelly Younés Hachana Research Unit“Sport Performance Health&Society”Higher Institute of Sport and Physical Education of Ksar SaidTunis 2009Tunisia Tunisian Research Laboratory“Sports Performance Optimization” National Center of Medicine and Science in Sports(CNMSS)Tunis 1003Tunisia Department of Sport Science and Kinesiology University of SalzburgSalzburg 5400Austria Higher Institute of Sports and Physical Education Manouba UniversityTunis 2009Tunisia

Purpose:This study aimed to assess the effectiveness and time course for improvements in explosive actions through resistance training(RT)*** training(PT)in prepubertal soccer ***:Thirty-four male subjects were assigned to:a control group(n=11);an RT group(5 regular soccer training sessions per week,n=12);a PT group(3 soccer training sessions and 2 RT sessions per week,n=11).The outcome measures included tests for the assessment of muscle strength(e.g.,1 repetition maximum half-squat test),jump ability(e.g.,countermovement jump,squat jump,standing long jump,and multiple 5 bounds test),linear speed(e.g.,20m sprint test),and change of direction(e.g.,Illinois change of direction test).Results:The RTG showed an improvement in the half-squat(△=13.2%;d=1.3,p<0.001)and countermovement jump(△=9.4%;d=2.4,p<0.001)at Week 4,whereas improvements in the 20-m sprint(△=4.2%;d=1.1,p<0.01);change of direction(CoD)(△=3.8%;d=2.1,p<0.01);multiple 5 bounds(△=5.1%;d=1.5,p<0.05);standing long jump(△=7.2%;d=1.2,p<0.01);squat jump(△=19.6%;d=1.5,p<0.01);were evident at Week *** PTG showed improvements in CoD(△=2.1%;d=1.3,p<0.05);standing long jump(△=9.3%;d=1.1,p<0.01);countermovement jump(△=16.1%;d=1.2,p<0.01);and squat jump(△=16.7%;d=1.4,p<0.01);at Week 8 whereas improvements in the 20-m sprint(△=4.1%;d=1.3,p<0.01);and multiple 5 bounds(△=7.4%;d=2.4,p<0.001);were evident only after *** RT and PT groups showed improvements in all sprint,CoD,and jump tests(p<0.05)and in half-squat performance,for which improvement was only shown within the RTG(p<0.001).Conclusion:RT and PT conducted in combination with regular soccer training are safe and feasible interventions for prepubertal soccer *** addition,these interventions were shown to be effective training tools to improve explosive actions with different time courses of improvements,which manifested earlier in the RTG than in the *** outcomes may help coaches and fitness trainers set out clear and concise

关键词： Change of direction Jump performances Plyometric training Resistance training Soccer Time course

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About a rare cause of intestinal perforation

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Open Journal of Internal Medicine 2011年第2期1卷 14-16页

作者： Mona Mlika Heifa Azouz Inès chelly Sofiène Ayadi Wael Rbai Nidhameddine Kchir Slim Haouet mohamed Moncef Zitouna 不详

Background: Periarteritis nodosa (PAN) is a necrotizing systemic vasculitis involving mediumsized arteries and rarely the smallsized ones. It affects various organs and is generally revealed by different non specific organs. The aim of the authors is to report a rare revealing manifestation of this disease which is the perforation of the small bowel and to highlight the most important histological features. Case report: The authors describe the case of a 48-year-old Caucasian woman, without a particular past medical history, who presented an acute surgical abdomen. A surgical exploration was decided and showed a necrosis of the small bowel and the appendix. A segmental ileectomy was performed. The histological examination of the specimen showed small vasculitis-affected with fibroid necrosis dealing to the diagnosis of intestinal perforation caused by a PAN was retained. Post-operatively, the patient was put on immunosuppressive therapy and presented a prolonged healing process and was discharged from the hospital 20 days after her admission. Conclusion: Although it is rare for PAN to be revealed by small bowel perforation, it should be kept in mind when facing ischemic change of the small bowel.

关键词： Periarteritis Nodosa Intestinal Perforation Vasculitis

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Extraprofessional and Occupational Risk Factors for Colorectal Cancer

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Journal of Life Sciences 2012年第8期6卷 848-857页

作者： Olfa El Maalel Wided Boughattas Maher Maoua Houda Kalboussi Iheb Bougmiza Houssem Rhif souhaiel Chatti Kader N'Daye Faten Debbabi Ali Mtiraoui Noejib Mrizak Department of Occupational Medicine Teaching Hospital Farhat Hached of Sousse Avenue Ibn El Jazzar 4000 Tunisia Department of Communal Medicine Medicine University Avenue Mohamed Karoui Sousse 4002 Tunisia

Colorectal cancers （CRC） account for frequent and serious cancers which result from the interaction between individual genetic factors and environmental factors, and in particular widely studied nutritional ones. The role of other occupational factors remains a controversial subject. The objective of this study is to evaluate the possible impact of occupational factors on the risk of developing CRC. Materials and Methods： This is a retrospective case-control study. The cases and the control group were enlisted in the general surgical ward of Farhat Hached Teaching Hospital of Sousse （Tunisia） during the period extending from 2004 to 2008, and they were age and gender-matched. The data were analyzed using SPSS 11.0 software with a signification threshold fixed at 5%. A univariate analysis was carried out as well as a multiple binary logistical regression. Results： During the period of the study, 40 cases of colorectal cancers have been colligated including 28 men and 12 women with a sex ratio of 0.43. The average age of the cases was 61.55 ± 13.3 years and 60.40 ± 12.84 years for the control group, with a non significant difference （P = 0.69）. The univariate analysis has objectivized significant associations between colorectal cancer and the housing conditions, the neoplastic and digestive family history, the occupational activity sector, exposure to pesticides, and lack of periodic medical supervision. After logistical regression, the occurrence risk of CRC was significantly associated with： alcohol and smoking （ORa = 3.43; Pa = 0.05）, meat consumption （ORa = 3.34; Pa = 0.03）, exposure to pesticides （ORa = 20.44; Pa = 0.012） and lack of periodic medical supervision （OR = 7.45; P = 0.004）. Conclusion： The occupational risk factors might play a role in the etiopathogenesis of colorectal cancers. With regard to our study, pesticides seem to be most implicated and necessitate suitable preventive measures. Nevertheless, it seems useful to multiply the studies to a much l

关键词： Colorectal cancer occupational risk factors extraprofessional factors epidemiology.

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