Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?

This study aimed to compare the effects of drop-jump training using a fixed drop-box height (i.e., 30-cm [FIXED]) vs. An optimal (OPT) drop-box height (i.e., 10-cm to 40-cm: generating an OPT reactive strength index [RSI]) in youth soccer players' physical fitness. Athletes were randomly alloca...

Full description

Autores:
Tipo de recurso:
Fecha de publicación:
2018
Institución:
Universidad del Rosario
Repositorio:
Repositorio EdocUR - U. Rosario
Idioma:
eng
OAI Identifier:
oai:repository.urosario.edu.co:10336/22464
Acceso en línea:
https://repository.urosario.edu.co/handle/10336/22464
Palabra clave:
Article
Clinical article
Controlled study
Dependent variable
Endurance
Fitness
Football
Height
Human
Illinois
Jumping
Juvenile
Maturity
Plyometrics
Post hoc analysis
Randomized controlled trial
Soccer player
Velocity
Adolescent
Athletic performance
Fitness
Male
Muscle strength
Physiology
Plyometrics
Procedures
Running
Soccer
Adolescent
Athletic performance
Humans
Male
Muscle strength
Physical fitness
Plyometric exercise
Running
Soccer
Change of direction
Football
Jumping
Maturity
Stretch-shortening cycle
Training optimization
Rights
License
Abierto (Texto Completo)
id EDOCUR2_81acec7ed7b7b40b1f04d4b3664f3b9f
oai_identifier_str oai:repository.urosario.edu.co:10336/22464
network_acronym_str EDOCUR2
network_name_str Repositorio EdocUR - U. Rosario
repository_id_str
dc.title.spa.fl_str_mv Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
title Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
spellingShingle Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
Article
Clinical article
Controlled study
Dependent variable
Endurance
Fitness
Football
Height
Human
Illinois
Jumping
Juvenile
Maturity
Plyometrics
Post hoc analysis
Randomized controlled trial
Soccer player
Velocity
Adolescent
Athletic performance
Fitness
Male
Muscle strength
Physiology
Plyometrics
Procedures
Running
Soccer
Adolescent
Athletic performance
Humans
Male
Muscle strength
Physical fitness
Plyometric exercise
Running
Soccer
Change of direction
Football
Jumping
Maturity
Stretch-shortening cycle
Training optimization
title_short Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
title_full Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
title_fullStr Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
title_full_unstemmed Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
title_sort Optimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?
dc.subject.keyword.spa.fl_str_mv Article
Clinical article
Controlled study
Dependent variable
Endurance
Fitness
Football
Height
Human
Illinois
Jumping
Juvenile
Maturity
Plyometrics
Post hoc analysis
Randomized controlled trial
Soccer player
Velocity
Adolescent
Athletic performance
Fitness
Male
Muscle strength
Physiology
Plyometrics
Procedures
Running
Soccer
Adolescent
Athletic performance
Humans
Male
Muscle strength
Physical fitness
Plyometric exercise
Running
Soccer
Change of direction
Football
Jumping
Maturity
Stretch-shortening cycle
Training optimization
topic Article
Clinical article
Controlled study
Dependent variable
Endurance
Fitness
Football
Height
Human
Illinois
Jumping
Juvenile
Maturity
Plyometrics
Post hoc analysis
Randomized controlled trial
Soccer player
Velocity
Adolescent
Athletic performance
Fitness
Male
Muscle strength
Physiology
Plyometrics
Procedures
Running
Soccer
Adolescent
Athletic performance
Humans
Male
Muscle strength
Physical fitness
Plyometric exercise
Running
Soccer
Change of direction
Football
Jumping
Maturity
Stretch-shortening cycle
Training optimization
description This study aimed to compare the effects of drop-jump training using a fixed drop-box height (i.e., 30-cm [FIXED]) vs. An optimal (OPT) drop-box height (i.e., 10-cm to 40-cm: generating an OPT reactive strength index [RSI]) in youth soccer players' physical fitness. Athletes were randomly allocated to a control group (n = 24; age = 13.7 years), a fixed drop-box height group (FIXED, n = 25; age = 13.9 years), or an OPT drop-box height group (OPT, n = 24; age = 13.1 years). Before and after 7 weeks of training, tests for the assessment of jumping (countermovement jump [CMJ], 5 multiple bounds), speed (20-m sprint time), change of direction ability (CODA [Illinois test]), strength {RSI and 5 maximal squat repetition test (5 repetition maximum [RM])}, endurance (2.4-km time trial), and kicking ability (maximal kicking distance) were undertaken. Analyses revealed main effects of time for all dependent variables (p less than 0.001, d = 0.24-0.72), except for 20-m sprint time. Analyses also revealed group 3 time interactions for CMJ (p less than 0.001, d = 0.51), depth jump (DJ) (p less than 0.001, d = 0.30), 20-m sprint time (p less than 0.001, d = 0.25), CODA (p less than 0.001, d = 0.22), and 5RM (p less than 0.01, d = 0.16). Post hoc analyses revealed increases for the FIXED group (CMJ: 7.4%, d = 0.36; DJ: 19.2%, d = 0.49; CODA: 23.1%, d = 20.21; 5RM: 10.5%, d = 0.32) and the OPT group (CMJ: 16.7%, d = 0.76; DJ: 36.1%, d = 0.79; CODA: 24.4%, d = 20.34; 5RM: 18.1%, d = 0.47). Post hoc analyses also revealed increases for the OPT group in 20-m sprint time (-3.7%, d = 0.27). Therefore, to maximize the effects of plyometric training, an OPT approach is recommended. However, using adequate fixed drop-box heights may provide a rational and practical alternative. © 2018 National Strength and Conditioning Association.
publishDate 2018
dc.date.created.spa.fl_str_mv 2018
dc.date.accessioned.none.fl_str_mv 2020-05-25T23:56:34Z
dc.date.available.none.fl_str_mv 2020-05-25T23:56:34Z
dc.type.eng.fl_str_mv article
dc.type.coarversion.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.spa.spa.fl_str_mv Artículo
dc.identifier.issn.none.fl_str_mv 10648011
15334287
dc.identifier.uri.none.fl_str_mv https://repository.urosario.edu.co/handle/10336/22464
identifier_str_mv 10648011
15334287
url https://repository.urosario.edu.co/handle/10336/22464
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.citationEndPage.none.fl_str_mv 893
dc.relation.citationIssue.none.fl_str_mv No. 4
dc.relation.citationStartPage.none.fl_str_mv 885
dc.relation.citationTitle.none.fl_str_mv Journal of Strength and Conditioning Research
dc.relation.citationVolume.none.fl_str_mv Vol. 32
dc.relation.ispartof.spa.fl_str_mv Journal of Strength and Conditioning Research, ISSN:10648011, 15334287, Vol.32, No.4 (2018); pp. 885-893
dc.relation.uri.spa.fl_str_mv https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050109304&partnerID=40&md5=e509159c4c3da381bbd66e5df234e3ba
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.acceso.spa.fl_str_mv Abierto (Texto Completo)
rights_invalid_str_mv Abierto (Texto Completo)
http://purl.org/coar/access_right/c_abf2
dc.format.mimetype.none.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv NSCA National Strength and Conditioning Association
institution Universidad del Rosario
dc.source.instname.spa.fl_str_mv instname:Universidad del Rosario
dc.source.reponame.spa.fl_str_mv reponame:Repositorio Institucional EdocUR
bitstream.url.fl_str_mv https://repository.urosario.edu.co/bitstreams/f6e44339-bc28-422c-b414-935f14c61ae1/download
https://repository.urosario.edu.co/bitstreams/ad7834ed-72d4-4444-ae29-43d3480026fb/download
https://repository.urosario.edu.co/bitstreams/ecff47ee-aa14-4fcd-99db-188f51b647c6/download
bitstream.checksum.fl_str_mv 9135c37e17c7cadd5cff72682922f525
91dd39973ad67c0bf62a55250f57962e
129594cd9a5cf130565a6a50359c0a33
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
MD5
repository.name.fl_str_mv Repositorio institucional EdocUR
repository.mail.fl_str_mv edocur@urosario.edu.co
_version_ 1814167690690953216
spelling 72564c2e-d77b-4030-a505-c757619e14f6-125a81f52-fed3-4028-86c9-d82063363fcb-1930a676c-165d-465b-a28c-bf5bac831b47-142f9a583-5933-405b-b67a-e4ba295c8350-10bd8320e-b65b-4de2-8751-6cf9c1415408-1695bc46d-d75d-4b17-ba45-77d21b65bf67-1de89e325-e4e4-4628-b487-c3e82cee76b8-170ffe0a8-a14b-4808-9d9d-275aa9e2b4bb-1249add0c-8763-40c4-ad6e-f44d30cbc934-144ec7a98-83e2-4651-ac7f-af7d58acc98c-12020-05-25T23:56:34Z2020-05-25T23:56:34Z2018This study aimed to compare the effects of drop-jump training using a fixed drop-box height (i.e., 30-cm [FIXED]) vs. An optimal (OPT) drop-box height (i.e., 10-cm to 40-cm: generating an OPT reactive strength index [RSI]) in youth soccer players' physical fitness. Athletes were randomly allocated to a control group (n = 24; age = 13.7 years), a fixed drop-box height group (FIXED, n = 25; age = 13.9 years), or an OPT drop-box height group (OPT, n = 24; age = 13.1 years). Before and after 7 weeks of training, tests for the assessment of jumping (countermovement jump [CMJ], 5 multiple bounds), speed (20-m sprint time), change of direction ability (CODA [Illinois test]), strength {RSI and 5 maximal squat repetition test (5 repetition maximum [RM])}, endurance (2.4-km time trial), and kicking ability (maximal kicking distance) were undertaken. Analyses revealed main effects of time for all dependent variables (p less than 0.001, d = 0.24-0.72), except for 20-m sprint time. Analyses also revealed group 3 time interactions for CMJ (p less than 0.001, d = 0.51), depth jump (DJ) (p less than 0.001, d = 0.30), 20-m sprint time (p less than 0.001, d = 0.25), CODA (p less than 0.001, d = 0.22), and 5RM (p less than 0.01, d = 0.16). Post hoc analyses revealed increases for the FIXED group (CMJ: 7.4%, d = 0.36; DJ: 19.2%, d = 0.49; CODA: 23.1%, d = 20.21; 5RM: 10.5%, d = 0.32) and the OPT group (CMJ: 16.7%, d = 0.76; DJ: 36.1%, d = 0.79; CODA: 24.4%, d = 20.34; 5RM: 18.1%, d = 0.47). Post hoc analyses also revealed increases for the OPT group in 20-m sprint time (-3.7%, d = 0.27). Therefore, to maximize the effects of plyometric training, an OPT approach is recommended. However, using adequate fixed drop-box heights may provide a rational and practical alternative. © 2018 National Strength and Conditioning Association.application/pdf1064801115334287https://repository.urosario.edu.co/handle/10336/22464engNSCA National Strength and Conditioning Association893No. 4885Journal of Strength and Conditioning ResearchVol. 32Journal of Strength and Conditioning Research, ISSN:10648011, 15334287, Vol.32, No.4 (2018); pp. 885-893https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050109304&partnerID=40&md5=e509159c4c3da381bbd66e5df234e3baAbierto (Texto Completo)http://purl.org/coar/access_right/c_abf2instname:Universidad del Rosarioreponame:Repositorio Institucional EdocURArticleClinical articleControlled studyDependent variableEnduranceFitnessFootballHeightHumanIllinoisJumpingJuvenileMaturityPlyometricsPost hoc analysisRandomized controlled trialSoccer playerVelocityAdolescentAthletic performanceFitnessMaleMuscle strengthPhysiologyPlyometricsProceduresRunningSoccerAdolescentAthletic performanceHumansMaleMuscle strengthPhysical fitnessPlyometric exerciseRunningSoccerChange of directionFootballJumpingMaturityStretch-shortening cycleTraining optimizationOptimal reactive strength index: Is it an accurate variable to optimize plyometric training effects on measures of physical fitness in young soccer players?articleArtículohttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501Ramirez-Campillo R.Alvarez C.García-Pinillos F.Sanchez-Sanchez J.Yanci J.Castillo D.Loturco I.Chaabene H.Moran J.Izquierdo M.ORIGINALOptimal_Reactive_Strength_Index__Is_It_an_Accurate-1.pdfapplication/pdf156100https://repository.urosario.edu.co/bitstreams/f6e44339-bc28-422c-b414-935f14c61ae1/download9135c37e17c7cadd5cff72682922f525MD51TEXTOptimal_Reactive_Strength_Index__Is_It_an_Accurate-1.pdf.txtOptimal_Reactive_Strength_Index__Is_It_an_Accurate-1.pdf.txtExtracted texttext/plain49361https://repository.urosario.edu.co/bitstreams/ad7834ed-72d4-4444-ae29-43d3480026fb/download91dd39973ad67c0bf62a55250f57962eMD52THUMBNAILOptimal_Reactive_Strength_Index__Is_It_an_Accurate-1.pdf.jpgOptimal_Reactive_Strength_Index__Is_It_an_Accurate-1.pdf.jpgGenerated Thumbnailimage/jpeg5066https://repository.urosario.edu.co/bitstreams/ecff47ee-aa14-4fcd-99db-188f51b647c6/download129594cd9a5cf130565a6a50359c0a33MD5310336/22464oai:repository.urosario.edu.co:10336/224642022-05-02 07:37:14.189434https://repository.urosario.edu.coRepositorio institucional EdocURedocur@urosario.edu.co