Mahdavi Moghadam, Samane

[ 1 ] - The effect of common school bags on elementary school girls’ trunk muscles electrical activity

the variety of the bags in the marhet, persudes students to use variable bags, irrespective of their muscle of physical complications. Researches show that various methods for educational devices carrying, have different effects on student physical pain perception and muscles, skeletal, cardio vascular, respiratory and metabolism performances. This research is conducted to review the school com...