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Effects of a 20-Week School-Based Periodized Strength Training Program on Motor Performance in Children (SBStrength)

1. juli 2026 oppdatert av: Dennis Gregorio Contreras, Universidad de Pamplona
Regular physical activity and supervised strength training are recognized components of healthy growth and motor development during childhood. Although linear and nonlinear periodized strength training are widely used approaches for organizing resistance training, limited information is available regarding their comparative application in school-aged children, particularly within school-based programs. This randomized controlled trial compares two periodized strength training models implemented over a 20-week intervention in schoolchildren to assess muscular power and speed/agility using standardized motor performance assessments.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Regular physical activity is an essential component of healthy growth and development during childhood. Current physical activity recommendations encourage children to participate in daily moderate-to-vigorous physical activity that includes muscle- and bone-strengthening activities several times per week. Within this context, supervised strength training represents a structured form of physical activity that can be incorporated into school-based exercise programs.

Adaptations to strength training are influenced by the organization of training variables, including intensity, volume, frequency, density, exercise selection, and progression. These variables are systematically manipulated through periodization to organize training across an intervention. Two of the most frequently used periodization strategies are linear periodization, characterized by progressive increases in training intensity accompanied by reductions in training volume, and nonlinear periodization, in which training variables are modified more frequently throughout the training program.

Although both periodization models are commonly applied in resistance training, comparatively few investigations have evaluated their application in school-aged children. Existing studies have primarily involved young athletes or sport-specific populations, and information regarding the comparative use of linear and nonlinear periodization in school-based interventions remains limited. Additional randomized controlled trials are needed to evaluate these programming strategies in children using standardized measures of motor performance.

This study is a 20-week randomized controlled trial conducted in schoolchildren. Participants are randomly assigned to one of three groups: a linear periodization group, a nonlinear periodization group, or a control group that continues regular physical education classes. The intervention consists of three supervised strength training sessions per week for the intervention groups.

Motor performance is assessed before and after the intervention using standardized field-based tests of lower-body muscular power, upper-body muscular power, sprint performance, and agility. Comparisons are performed between the linear periodization group, the nonlinear periodization group, and the control group according to the study protocol.

Studietype

Intervensjonell

Registrering (Faktiske)

75

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

    • Norte de Santander Department
      • Pamplona, Norte de Santander Department, Colombia, 543050
        • IE Normal Superior Pamplona
      • Pamplona, Norte de Santander Department, Colombia, 543050
        • Institución Educativa Sede José Antonio Galán
      • Pamplona, Norte de Santander Department, Colombia, 543050
        • Seminario Menor Santo tomas de Aquino

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Barn

Tar imot friske frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Schoolchildren enrolled in one of the participating educational institutions.
  • Approximately 12-13 years of age.
  • Willing to participate in the study.
  • Written informed consent provided by parents or legal guardians.
  • Availability to participate in all assessment sessions.

Exclusion Criteria:

  • Medical history that prevented participation in sports practice (cardiovascular disease, neurological disease, or chronic respiratory disease).
  • Musculoskeletal injuries and/or bone malformations at the time of the study.
  • Recent injury before study participation.
  • Absence during pre-test or post-test assessments.
  • Failure to attend at least 80% of the intervention sessions (experimental groups).
  • Participation in systematic physical activity or organized sports outside the school setting.
  • Lack of written parental or legal guardian consent.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Annen
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Dobbelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Ingen inngripen: Control Group (CG)
Participants attended only regular physical education classes and did not receive the strength training intervention.
Eksperimentell: Linear Periodization Group (LPG)
Participants completed a 20-week school-based strength training program using a linear periodization model, performed three times per week in extracurricular sessions.
Participants completed a 20-week school-based periodized strength training program conducted during extracurricular sessions three times per week. Participants were assigned to either a linear periodization group or a nonlinear periodization group. The program aimed to improve motor performance through structured strength training exercises adapted to school-aged children.
Eksperimentell: Nonlinear Periodization Group (NLPG)
Participants completed a 20-week school-based strength training program using a nonlinear periodization model, performed three times per week in extracurricular sessions.
Participants completed a 20-week school-based periodized strength training program conducted during extracurricular sessions three times per week. Participants were assigned to either a linear periodization group or a nonlinear periodization group. The program aimed to improve motor performance through structured strength training exercises adapted to school-aged children.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Motor Performance in Schoolchildren
Tidsramme: 20 weeks

Changes in motor performance evaluated through:

Countermovement jump (cm) Squat jump (cm) Standing long jump (cm) 10 × 5 m shuttle run (s) Medicine ball throw (cm)

20 weeks

Samarbeidspartnere og etterforskere

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Sponsor

Etterforskere

  • Hovedetterforsker: Dennis G Contreras, Doctor, Universidad de Pamplona

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

14. februar 2023

Primær fullføring (Faktiske)

1. juli 2023

Studiet fullført (Faktiske)

15. juli 2023

Datoer for studieregistrering

Først innsendt

20. juni 2026

Først innsendt som oppfylte QC-kriteriene

1. juli 2026

Først lagt ut (Faktiske)

8. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

8. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

1. juli 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • UPamplona

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

IPD-planbeskrivelse

Individual participant data will not be shared in order to protect participant confidentiality and privacy and because no data-sharing plan was established in the study protocol or informed consent process.

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .