• 作者：Daniel N. Ardoy^a ; ^b ; ^{daniel.navarro@murciaeduca.es} ; Juan M. Ferná ; ndez-Rodrí ; guez^c ; Jonatan R. Ruiz^d ; ^e ; Palma Chilló ; n^e ; Vanesa Españ ; a-Romero^b ; ^f ; Manuel J. Castillo^b ; Francisco B. Ortega^b ; ^d
• 关键词：AVENA ; Alimentació ; n y Valoració ; n del Estado Nutricional de los Adolescentes ; EDUFIT ; educació ; n para el fitness ; EF ; educació ; n fí ; sica ; GC ; grupo control ; GE ; grupo experimental ; HELENA ; Healthy Lifestyle in Europe by Nutr
• 刊名：Revista Espa帽ola de Cardiolog铆a
• 出版年：2011
• 期刊代码：pca308_03008932
• 类别：med
• 出版时间：June 2011
• 卷：64
• 期：6
• 页码：484-491
• 文件大小：171 K

Introduction and objectives

Physical fitness level is a marker of cardiovascular health in young people. The aim of this study was to analyze the effects of a school-based intervention program, focused on increasing the volume and intensity of physical education (PE) sessions, on adolescents鈥?physical fitness.

Methods

Sixty-seven adolescents (12-14 years old) from three secondary school classes participated in a 16-week intervention. The classes were randomly allocated to the control group, experimental group 1 (EG1) or experimental group 2 (EG2). The control group received standard PE (2 sessions/week), the EG1 received 4 standard PE sessions/week and the EG2 received four high-intensity PE sessions/week. Aerobic fitness, muscle strength, speed-agility and flexibility were assessed using previously validated field-based tests before and after the intervention.

Results

Doubling the number of PE sessions/week resulted in improvements in aerobic fitness and flexibility (P=.008 and P=.04, respectively). Further increases in the intensity of the sessions were related to improvements in speed-agility (P<.001). The maximal oxygen consumption increased by 3 and 5 mL/kg/min in the EG1 and EG2, respectively. No differences were observed for muscle strength.

Conclusions

The results suggest that doubling the frequency of PE sessions is a sufficient stimulus to improve physical fitness, particularly aerobic fitness, which has been shown to be a powerful indicator of cardiovascular health in children and adolescents. Future studies involving larger sample sizes should confirm or refute these findings.

Full English text available from: