Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
from September 2014
©Journal of Sports Science and Medicine (2012) 11, 312 - 321

Research article
Intervention for Spanish Overweight Teenagers in Physical Education Lessons
Emilio J. Martínez-López1, , Alberto Grao-Cruces2, José E. Moral-García3, Antonio Pantoja-Vallejo4
Author Information
1 Research group HUM653 Laboratory, Department of Didactic of Musical, Plastic and Body Expression. University of Jaén, Spain
2 Department of Sport and Computer Science, University of Pablo Olavide, Seville, Spain
3 Physical activity and Sport Faculty, University of Salamanca, Spain
4 Department of Pedagogy, Research Group HUM 660 laboratory, University of Jaén, Spain

Emilio J. Martínez-López
✉ Dpto. Didáctica de la Expresión Musical, Plástica y Corporal, Facultad de Humanidades y Ciencias de la Educación (D-2), Campus Las Lagunillas. 23071, Jaén, SPAIN
Publish Date
Received: 03-02-2012
Accepted: 28-03-2012
Published (online): 01-06-2012
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Physical education is a favourable educational framework for the development of programmes aimed at increasing physical activity in children and thus reducing sedentarism. The progressive increase of overweight students demands global control and follow-up measurement of these behaviours in both in and out of school. The pedometer can be a useful tool in this field. It is easy to use and allow Physical Education (PE) departments to quantify their students' number of steps/day. The aim of this study was to determine the effect of a pedometer intervention on body fat and BMI levels in overweight teenagers. Besides, the effects of the programme are analysed according to two other variables: pedometer ownership and gender, distinguishing between out-of-school and school hours, weekdays and weekends. The sample comprises 112 overweight students (49 boys and 63 girls) from 5 secondary schools. Participants were asked to follow a physical activity programme consisting on a minimum of 12000 and 10000 steps/day for boys and girls, respectively. It also allowed them to get up to 2 extra points in their PE marks. Results were measured after 6 weeks of programme application as well as after 6 weeks of retention. Results revealed significantly reduced BMI in the teenagers with their own pedometer (p < 0.05). The difference observed in the number of steps/day between boys (12050) and girls (9566) was significant in all measured time periods (p < 0.05). Besides, both overweight boys and girls were observed to take 1000 steps/day less at weekends than in weekdays. Therefore, it is concluded that the proposal of 12000 and 10000 steps for overweight boys and girls, respectively, accompanied by a reinforcement programme in their final PE marks, seems sufficient to obtain significant BMI reductions. Besides, PE is shown a favourable framework for the proposal of pedometer-impelled weight loss programmes in overweight youth.

Key words: Pedometer, overweight, school physical education, body mass index, body fat

           Key Points
  • A programme of 12000 and 10000 steps for overweight boys and girls, respectively with reinforcement in physical education marks, the body mass index improves.
  • Body mass index more reduced was in Spanish adolescent overweight that used their own pedometer.
  • The steps/day between boys (12050) and girls (9566) with overweight was different (p < 0.05).
  • Overweight boys and girls were observed to take 1000 steps/day less at weekends than in weekdays.
  • In physical education is possible to apply a programme of steps in obese youth of secondary education schools.
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