Effects of Physical Activity on Cardiovascular Risk Markers in School-Aged Mexican Children

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT00836446

Enrollment

214

Registered

2009-02-04

Start date

2008-08-31

Completion date

2008-12-31

Last updated

2009-03-11

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

Conditions

Cardiovascular Disease, Obesity

Keywords

school-aged, children, obesity, cardiovascular risk, physical activity

Brief summary

Childhood obesity is a public health problem; in Mexican children a high prevalence of cardiovascular risk factors are present. Physical activity has been proposed as a strategy to reduce this risk. We conducted a pre-posttest intervention study of 214 school-aged Mexican children (4th to 6th grade), to assess the effects of two physical activity routines with different duration and intensity (40 minute aerobic routine vs. 20 minute routine) on cardiovascular risk markers. Physical activity routines were assigned randomly to two public schools in Toluca, Mexico (20 min: group 1 (n= 117), 40 min: group 2 (n=97)). The routines were implemented Monday through Friday for 12 weeks. Nutrition assessment was done before and after the intervention and included anthropometric measurements (weight, height, body mass index, waist circumference and body composition), blood pressure and biochemical analysis (triglycerides, total cholesterol LDL-cholesterol, HDL-Cholesterol, glucose and insulin). Heart rate was monitored 3 times during the intervention to evaluate the routine´s intensity.

Interventions

OTHERphysical activity

physical activity routines 5 times a weeks for 12 weeks.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

PREVENTION

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

8 Years to 13 Years

Healthy volunteers

Inclusion criteria

* All children from 4th to 6th grade, from 2 public urban schools in Toluca, Estado de México

Exclusion criteria

* If they have a chronic disease * If they can not do exercise * If they have low body mass index (BMI less than 5th percentile). * If they miss more than 20 sessions * If they decide that they did not want to participate any more.

Design outcomes

Primary

Measure	Time frame
Evaluate the effect of physical activity routine on cardiovascular risk markers	3 months

Secondary

Measure	Time frame
measure heart rate to evaluate the intensity of physical activity routines	3 months

Countries

Mexico

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026