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| 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 | The effects of plyometric jump training on physical fitness attributes in basketball players:A meta-analysis`显示文摘Background:There is a growing body of experimental evidence examining the effects of plyometric jump training(PJT)on physical fitness attributes in basketball players;however,this evidence has not yet been comprehensively and systematically aggregated.Therefore,our objective was to meta-analyze the effects of PJT on physical fitness attributes in basketball players,in comparison to a control condition.Methods:A systematic literature search was conducted in the databases PubMed,Web of Science,and Scopus,up to July 2020.Peer-reviewed controlled trials with baseline and follow-up measurements investigating the effects of PJT on physical fitness attributes(muscle power,i.e.,jumping performance,linear sprint speed,change-of-direction speed,balance,and muscle strength)in basketball players,with no restrictions on their playing level,sex,or age.Hedge’s g effect sizes(ES)were calculated for physical fitness variables.Using a random-effects model,potential sources of heterogeneity were selected,including subgroup analyses(age,sex,body mass,and height)and single training factor analysis(program duration,training frequency,and total number of training sessions).Computation of metaregression was also performed.Results:Thirty-two studies were included,involving 818 total basketball players.Significant(p<0.05)small-to-large effects of PJT were evident on vertical jump power(ES=0.45),countermovement jump height with(ES=1.24)and without arm swing(ES=0.88),squat jump height(ES=0.80),drop jump height(ES=0.53),horizontal jump distance(ES=0.65),linear sprint time across distances≤10 m(ES=1.67)and>10 m(ES=0.92),change-of-direction performance time across distances≤40 m(ES=1.15)and>40 m(ES=1.02),dynamic(ES=1.16)and static balance(ES=1.48),and maximal strength(ES=0.57).The meta-regression revealed that training duration,training frequency,and total number of sessions completed did not predict the effects of PJT on physical fitness attributes.Subgroup analysis indicated greater improvements in older compared to younger players in horizontal jump distance(>17.15 years,ES=2.11;≤17.15 years,ES=0.10;p<0.001),linear sprint time>10 m(>16.3 years,ES=1.83;≤16.3 years,ES=0.36;p=0.010),and change-of-direction performance time≤40 m(>16.3 years,ES=1.65;≤16.3 years,ES=0.75;p=0.005).Greater increases in horizontal jump distance were apparent with>2 compared with≤2 weekly PJT sessions(ES=2.12 and ES=0.39,respectively;p<0.001).Conclusion:Data from 32 studies(28 of which demonstrate moderate-to-high methodological quality)indicate PJT improves muscle power,linear sprint speed,change-of-direction speed,balance,and muscle strength in basketball players independent of sex,age,or PJT program variables.However,the beneficial effects of PJT as measured by horizontal jump distance,linear sprint time>10 m,and change-of-direction performance time≤40 m,appear to be more evident among older basketball players. | Rodrigo Ramirez-Campillo Antonio García-Hermoso Jason Moran Helmi Chaabene Yassine Negra Aaron T.Scanlan | 2022 | Journal of Sport and Health Science2022，11，6： | 2 |
| 3 | Association among stress, personality traits and sleep bruxism in children显示文摘 | Serra Negra JMm Paiva SM | 2012 | Pediatr Dent2012，34，2： | 1 |
| 4 | Interactions between the NO-citrulline cycle and brain-derived neurotrophic factor in differentiation of neural stem cells显示文摘 | Lameu C Trujillo C A Schwindt T T Negraes P D Pillat M M Morais K L | | 0，，： | 1 |
| 5 | Oligodendrocyte precursor cells:reactive cells that inhibit axon growth and regeneration显示文摘 | Chen ZJ Negra M Levine A | 2002 | J Neurocytol2002，31，67： | 1 |
| 6 | Loss evaluation of HVAC and HVDC transmission solutions for large offshore wind farms 显示文摘 | NEGRA N B TODOROVIC J ACKERMANN T | 2006 | Electric Power Systems Research2006，76，11： | 1 |
| 7 | Loss evaluation o{ HVAC and HVDC transmission solutions for large of{shore wind farms 显示文摘 | BARBERIS NEGRA N TODROROVIC J ACKERMANN T | 2006 | Electric Power System Research2006，76，11： | 1 |
| 8 | Aspects of relevance in offshore wind farm reliability aspects of relevance in offshore wind farm reliability assessment显示文摘 | NEGRA N B HOLMSTROM O BAK-JENSEN B | 2007 | IEEE Transactions on Energy Conversion2007，22，1： | 1 |
| 9 | Histoplasmosis of the larynx显示文摘 | Pochini Sobrinho F Della Negra M Queiroz W | 2007 | Braz J Otorhinolaryngol2007，73，6： | 1 |
| 10 | Efficacy and safety of tipranavir co-administered with ritonavir in HIV-l-infected children and adolescents: 5 years of experience显示文摘 | SALAZAR JC CAHN P NEGRA MD | 2014 | Pediatr Infect Dis J2014，33，4： | 1 |
| 11 | Oxidizing behavior of soil manganese显示文摘 | NEGRA C ROSS D S LANZIMTTI A | 2005 | Soil Science Society of America Journal2005，69，1： | 1 |
| 12 | Oligodendrocyte precursor cells: reactive cells that inhibit axon growth and regeneration 显示文摘 | Chen Z J Negra M Levine AK | 2003 | J Neurocytol2003，31，： | 1 |
| 13 | Loss evaluation of HVAC and HVDC transmission solutions for large offshore wind farms 显示文摘 | BARBERIS NEGRA N TODOROVIC J | 2006 | Electric Power Systems Research2006，76，11： | 1 |
| 14 | 查看详情显示文摘 | Menna E Negra F D Prato M | | 0，，08： | 1 |
| 15 | Xanthohumolmodulates inflammation, oxidative stress, and angiogenesisin type 1 diabetic rat skin wound healing显示文摘 | COSTA R NEGRA R VALENET I | 2013 | J Nat Prod2013，2276，11： | 1 |
| 16 | Loss evaluation of HVAC and HVDC transmission solutions for large offshore wind farms显示文摘 | N. Barberis Negra J. Todorovic T. Ackermann | 2006 | Electric Power Systems Research2006，，11： | 1 |
| 17 | The structure of an uhrathin VO (x 1 ) film grown epitaxially on TiO2 (110) 显示文摘 | Negra D M Sambi M Granozzi G | 2000 | Surface Science2000，461，123： | 1 |
| 18 | Loss evaluation of HVAC and HVDC transmission solutions for large offshore wind farms显示文摘 | BARBERIS NEGRA N TODOROVIC J ACKERMANN T | 2006 | Electric Power Systems Research2006，76，11： | 1 |
| 19 | Sleep apnoea syndrome secondary to rheumatoid arthritis 显示文摘 | Pepin JL Della Negra E Grosclaude S | 1995 | Throax1995，50，6： | 1 |
| 20 | Carbon Nanotubes on HPLC Silica Microspheres显示文摘 | Menna E Negra F D Prato M | 2006 | Carbon2006，44，8： | 1 |
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