JSHR is a multidisciplinary journal that features investigations, studies, and reviews on current topics in sports, physical activity, health and education.

Sánchez Rivas, E.; Mayorga-Vega, D.; Fernández Rodríguez, E.; Merino-Marbán, R. (2014). Efecto de un programa de estiramiento de la musculature isquiosural en las clases de educación física en Educación Primaria. Journal of Sport and Health Research. 6(2):159-168.



The aim of this study was to analyze the effects of a 3-minute hamstring stretching program conducted during Physical Education (PE) classes. The sample consisted of 44 students from two groups of 3rd grade (age 7.84 ± 0.37 years; body mass 30.41 ± 4.30 kg; height 1.29 ± 0.04 m; body mass index 18.37 ± 2.09 kg/m2) of Primary Education, divided randomly into Experimental Group (EG) and Control Group (CG). The EG performed three minutes of hamstring stretches during each PE class over 9 weeks. The CG followed the standard PE class program. Hamstring flexibility was measured using the sit-and-reach test before and after the program. The results showed that the intervention program had a statistically significant positive effect (p = 0.003). A 3-minute static passive hamstring stretching program over nine weeks during PE classes seems to improve the scores in the sit-and-reach test in elementary schoolchildren.  




Sit-and-reach; schoolchildren, children, flexibility.


Journal of Sport and Health Research - 2009