|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effectiveness and time-course adaptation of resistance training vs. plyometric training in prepubertal soccer players显示文摘Purpose:This study aimed to assess the effectiveness and time course for improvements in explosive actions through resistance training(RT)vs.plyometric training(PT)in prepubertal soccer players.Methods: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 8.The 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 Week.The 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 players.In 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 PTG.These outcomes may help coaches and fitness trainers set out clear and concise goals of training according to the specific time course of improvement difference between RT and PT on proxies of athletic performance of prepubertal soccer players. | Yassine Negra Helmi Chaabene Thomas Stöggl Mehréz Hammami Mohamed Souhaiel Chelly Younés Hachana | 2020 | Journal of Sport and Health Science2020，9，6： | 3 |
| 2 | Suppression of quantum well intermixing in GaAs/AlGaAs laser structures using phosporus-doped SiO2 encapsulant layer显示文摘 | Cusumano P Ooi B S Helmy Saher | 1997 | J Appl Phys1997，81，5： | 2 |
| 3 | Safety and efficacy of Hansenula-derived PEGylated-interferon alpha-2a and ribavirin combination in chronic hepatitis C Egyptian children显示文摘AIM:To investigate the safety and efficacy of a Hansenula-derived PEGylated(polyethylene glycol)interferon(IFN)-alpha-2a(Reiferon Retard)plus ribavirin customized regimen in treatment-na?ve and previously treated(non-responders and relapsers)Egyptian children with chronic hepatitis C infection.METHODS:Forty-six children with chronic hepatitis C virus(HCV)infection were selected from three tertiary pediatric hepatology centers.Clinical and laboratory evaluations were undertaken.Quantitative polymerase chain reaction(PCR)for HCV-RNA was performed before starting treatment,and again at 4,12,24,48,72wk during treatment and 6 mo after treatment cessation.All patients were assigned to receive a weekly subcutaneous injection of PEG-IFN-alpha-2a plus daily oral ribavirin for 12 wk.Thirty-four patients were treatment-na?ve and 12 had a previous treatment trial.Patients were then divided according to PCR results into two groups.GroupⅠincluded patients who continued treatment on a weekly basis(7-d schedule),while groupⅡincluded patients who continued treatment on a 5-d schedule.Patients from either group who were PCR-negative at week 48,but had at least one PCRpositive test during therapy,were assigned to have an extended treatment course up to 72 wk.The occurrence of adverse effects was assessed during treatment and follow up.The study was registered at www.ClinicalTrials.gov(NCT02027493).RESULTS:Only 11 out of 46(23.9%)patients showed a sustained virological response(SVR),two patients were responders at the end of treatment;however,they were lost to follow up at 6 mo post treatment.Breakthrough was seen in 18(39.1%)patients,one patient(2.17%)showed relapse and 14(30.4%)were non-responders.Male gender,short duration of infection,low viral load,mild activity,and mild fibrosis were the factors related to a better response.On the other hand,patients with high viral load and absence of fibrosis failed to respond to treatment.Before treatment,liver transaminases were elevated.After commencing treatment,they were normalized in all patients at week 4 and were maintained normal in responders till the end of treatment,while they increased again significantly in non-responders(P=0.007 and 0.003 at week 24 and 72 respectively).The 5-d schedule did not affect the response rate(1/17 had SVR).Treatment duration(whether 48 wk or extended course to 72 wk)gave similar response rates(9/36 vs 2/8 respectively;P=0.49).Type of previous treatment(short acting IFN vs PEG-IFN)did not affect the response to retreatment.On the other hand,SVR was significantly higher in previous relapsers than in previous non-responders(P=0.039).Only mild reversible adverse effects were observed and children tolerated the treatment well.CONCLUSION:Reiferon Retard plus ribavirin combined therapy was safe.Our customized regimen did not influence SVR rates.Further trials on larger numbers of patients are warranted. | Suzan El Naghi Tawhida Y Abdel-Ghaffar Hanaa El-Karaksy Elham F Abdel-Aty Mona S El-Raziky Aleef A Allam Heba Helmy Hanaa A El-Araby Behairy E Behairy Mohamed A El-Guindi Hatem El-Sebaie Aisha Y Abdel-Ghaffar Nermin A Ehsan Ahmed M El-Hennawy Mostafa M Sira | 2014 | World Journal of Gastroenterology2014，20，16： | 2 |
| 4 | The effect of an-esthesia and surgery on plasma cytokine production显示文摘 | Helmy S A Wahby M A El-Nawaway M | 1999 | Anesthesia1999，54，8： | 1 |
| 5 | A collagen-fibrin patch (Tachosil) for the prevention of symptomatic lymphoceles after pelvic lymphadenectomy in women with gynecologic malignancies: a randomized clinical trial显示文摘 | Grimm C Polterauer S Helmy S | 2014 | BMC Cancer2014，14，1： | 1 |
| 6 | Prophylatic anti-emetic efficacy of ondansetron in laparoscpic cholecytectomy under total intravenous anaesthesia显示文摘 | | 1999 | Anaesthesia1999，54，： | 1 |
| 7 | Ricin RCA60 evidence of its phospholipase activity显示文摘 | Helmy M Lombard S Pieroni G | 1999 | Biochem Biophys Res Commun1999，258，： | 1 |
| 8 | Fertility outcomes fol-lowing expectant management of tubal ectopic pregnancy 显示文摘 | Helmy S Sawyer E Ofili - Yebovi D | 2007 | Ul-trasound Obstet Gynecol2007，30，7： | 1 |
| 9 | A retrospective hospital study of human cystic echinoeoeeosis in Egypt 显示文摘 | Kandeel A Ahmed E S Helmy H | 2004 | East Mediterr Health J2004，10，3： | 1 |
| 10 | Cooperative problem-based learning(CPBL):A practical PBL model for a typical course显示文摘 | Mohd-Yusof K Helmi S A Jamaludin M Z | 2011 | i JET2011，，3： | 1 |
| 11 | First-trimester caesarean scar pregnancy evolving into placenta previa/accrete at term 显示文摘 | Ben Nagi J Helmy S Ofili-Yebovi D | 2005 | J Ul- trasound Med2005，24，： | 1 |
| 12 | Definition and Evaluation of Transient Ischemic Attack: A Scientific Statement for Healthcare Professionals From the American Heart Association/American Stroke Association Stroke Council; Council on Cardiovascular Surgery and Anesthesia; Council on Cardio显示文摘 | J Donald Easton Jeffrey L. Saver Gregory W. Albers Mark J. Alberts Seemant Chaturvedi Edward Feldmann Thomas S. Hatsukami Randall T. Higashida S Claiborne Johnston Chelsea S. Kidwell Helmi L. Lutsep Elaine Miller Ralph L. Sacco | 2009 | Stroke2009，，6： | 1 |
| 13 | The effect of anaesthesia and surgery on plasma cytokine production显示文摘 | Helmy S A Wahby M A EI-Nawaway M | 1999 | Anaesthsia1999，54，8： | 1 |
| 14 | The immunomodulatory effects of prolonged intravenous infusion of propofol versus midazolam in critically ill surgical patients显示文摘 | HELMY S A al ATTIYAH R J | 2001 | Anaesthesia2001，56，1： | 1 |
| 15 | Therapeutic drug monitoring and pharmacokinetic compartmental analysis of sulpiride double-peak absorption profile after oral administration to human volunteers显示文摘 | HELMY S A | 2013 | Biopharm Drug Dispos2013，34，5： | 1 |
| 16 | Reproductive outcome of women with a previous history of caesarean scar ectopic pregnancies显示文摘 | Ben Nagi J Helmy S Qfili Yebovi D | 2007 | Hum Reprod2007，22，7： | 1 |
| 17 | Reproductive out- comes of women with a previous history of cesarean scar ectopic pregnancies 显示文摘 | Ben Nagi J Helmy S Ofili-Yebovi D | 2007 | Hum Reprod2007，22，7： | 1 |
| 18 | Effects of organophosphoru,carbamate, pyrethroid and organochlorine pesticides and a heavy metal on survival and cholinesterase activity of chironormus riparius meigen显示文摘 | Ibrahim H Kheir R Helmi S | 1998 | Bull Environ Toxicol1998，60，： | 1 |
| 19 | The surface energy of palygorskite 显示文摘 | Helmy A K Bussetti S G Ferreiro E A | 2007 | Powder Technology2007，171，： | 1 |
| 20 | Interactions of Cryptosporidium parvum, Giardia lamblia, vaccinal poliovirus type 1, and bacteriophages phiX174 and MS2 with a drinking water biofilm and a wastewater biofilm 显示文摘 | Helmi K Skraber S Gantzer C | 2008 | Appl Environ Microbiol2008，74，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员