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Int J Behav Nutr Phys Act. 2014 Dec 10;11:154. doi: 10.1186/s12966-014-0154-4.

Gender differences on effectiveness of a school-based physical activity intervention for reducing cardiometabolic risk: a cluster randomized trial.

Author information

1
Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain. vicente.martinez@uclm.es.
2
Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, ᅟ, Chile. vicente.martinez@uclm.es.
3
Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain. mairena.sanchez@uclm.es.
4
School of Education, Universidad de Castilla-La Mancha, Ciudad Real, Spain. mairena.sanchez@uclm.es.
5
Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain. blanca.notario@uclm.es.
6
Cuenca I Primary Care Center, Cuenca, Spain. fsalcedo@sescam.org.
7
Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain. montserrat.solera@uclm.es.
8
Hospital Virgen de la Luz, Cuenca, Spain. pfranquelo@yahoo.es.
9
Hospital Virgen de la Luz, Cuenca, Spain. saralopez@yahoo.es.
10
Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain. Jorge.Canete@uclm.es.
11
Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain. Natalia.Arias@uclm.es.
12
Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain. coraltn88@hotmail.com.
13
Exercise Physiology Laboratory, Universidad de Castilla-La Mancha, Toledo, Spain. Ricardo.Mora@uclm.es.
14
Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain. Fernando.artalejo@uam.es.

Abstract

BACKGROUND:

Studies that have examined the impact of a physical activity intervention on cardiometabolic risk factors have yielded conflicting results. The objective of this study was to assess the impact of a standardized physical activity program on adiposity and cardiometabolic risk factors in schoolchildren.

METHODS:

Cluster randomized trial study of 712 schoolchildren, 8-10 years, from 20 public schools in the Province of Cuenca, Spain. The intervention (MOVI-2) consisted of play-based and non-competitive activities. MOVI-2 was conducted during two 90-minute sessions on weekdays and one 150-minute session on Saturday mornings every week between September 2010 and May 2011. We measured changes in adiposity (overweight/obesity prevalence, body mass index [BMI], triceps skinfold thickness [TST], body fat %, fat-free mass, waist circumference) and other cardiometabolic risk factors (LDL-cholesterol, triglycerides/HDL-cholesterol ratio, insulin, C-reactive protein and blood pressure). The analyses used mixed regression models to adjust for baseline covariates under cluster randomization.

RESULTS:

Among girls, we found a reduction of adiposity in intervention versus control schools, with a decrease in TST (-1.1 mm; 95% confidence interval [CI] -2.3 to -0.7), body fat % (-0.9%; 95% CI -1.3 to -0.4), waist circumference (-2.7 cm; 95% CI -4.5 to -0.9), and an increase in fat-free mass (0.3 kg; 95% CI 0.01 to 0.6). The intervention also led to lower serum LDL-cholesterol and insulin levels. Among boys, a reduction in waist circumference (-1.4 cm; 95% CI -2.6 to -0.1; P = 0.03), and an increase in fat-free mass (0.5 kg; 95% CI 0.2 to 0.9; P = 0.003) was associated with the intervention versus control schools. The prevalence of overweight/obesity or underweight, BMI, and other cardiometabolic risk factors was not modified by the intervention. No important adverse events were registered.

CONCLUSIONS:

An extracurricular intervention of non-competitive physical activity during an academic year, targeting all schoolchildren regardless of body weight, is a safe and effective measure to reduce adiposity in both genders and to improve cardiometabolic risk profile in girls.

TRIAL REGISTRATION:

Clinical trials NCT01277224.

PMID:
25491026
PMCID:
PMC4295398
DOI:
10.1186/s12966-014-0154-4
[Indexed for MEDLINE]
Free PMC Article

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