Skip to content

A Multicomponent Physical Activity Intervention Effect on Weekly Steps and Physical Fitness in Preadolescents

A Multicomponent Physical Activity Intervention Effect on Weekly Steps and Physical Fitness in Preadolescents: A Pretest-Posttest Study and Randomized Control Trial

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07393789
Enrollment
178
Registered
2026-02-06
Start date
2022-10-31
Completion date
2023-03-03
Last updated
2026-02-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Multicomponent 16-week Program Comprised of a Goal Setting, Wearable Activity Tracker Feedback, Physical Exercising, and Motivating Students to be Active

Keywords

Pretest-Posttest Study, Randomized Control Trial, physical activity intervention, children, preadolescents, physical fitness, body mass index, school-based intervention

Brief summary

This study examines the effects of a 16-week structured physical activity program on physical fitness, steps number, and body mass index in children aged 8 to 10 years. Participants were randomly assigned to either an intervention group that participated in the physical activity program or a control group that continued with their usual daily activities without additional intervention. Physical fitness outcomes include standing broad jump, handgrip strength, and 20-meter shuttle run performance. Body mass index is calculated from measured height and body mass. The goal of the study is to determine whether participation in a multicomponent physical activity intervention leads to greater improvements in physical fitness, steps number, and body composition compared with no additional intervention.

Detailed description

This randomized controlled trial investigated the effects of a multicomponent physical activity intervention on physical fitness, steps number, and body mass index in preadolescent children. Children aged 8 to 10 years were recruited from a primary school setting and randomly allocated to either an intervention group or a control group. The intervention group participated in a structured physical activity program and motivational strategies lasting 16 weeks, while the control group continued their regular daily routines and school activities without additional intervention activities provided by the study. The physical activity program consisted of planned sessions designed to develop muscular strength, cardiorespiratory endurance, speed, and coordination through age-appropriate exercises and games. Assessments were conducted before and after the intervention period. Physical fitness was evaluated using the standing broad jump (lower-body muscular power), handgrip strength (upper-body muscular strength), and the 20-meter shuttle run test (cardiorespiratory fitness). Body mass index was calculated using measured body mass and height. The primary objective of the study was to determine whether children participating in the intervention demonstrate greater improvements in physical fitness and body mass index compared with children in the control group.

Interventions

Structured physical activity sessions and motivational procedures designed to improve muscular strength, cardiorespiratory fitness, speed, and coordination.

Sponsors

University of Belgrade
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Intervention model description

Participants were randomly assigned to either an intervention group or a control group.

Eligibility

Sex/Gender
ALL
Age
8 Years to 10 Years
Healthy volunteers
Yes

Inclusion criteria

* Children aged 8 to 10 years. * Enrollment in regular primary school. * Written informed consent obtained from parent or legal guardian. * Ability to participate in physical education and physical activity.

Exclusion criteria

* Medical conditions or physical disabilities that limit participation in physical activity. * Acute illness or injury at the time of testing.

Design outcomes

Primary

MeasureTime frameDescription
Handgrip StrengthBaseline and 16 weeksHandgrip Strength in kg
Standing Broad Jump DistanceBaseline and 16 weeksAssessment of lower-body muscular power measured in centimeters
20-Meter Shuttle Run PerformanceBaseline and 16 weeks20-Meter Shuttle Run result in seconds

Secondary

MeasureTime frameDescription
Body Mass Index (BMI)Baseline and 16 weeksBMI is calculated by dividing weight in kilograms by height in meters squared.

Countries

Czechia, Serbia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 7, 2026