The study aimed to analyze the gait kinematics of youth aged 13-17 years, with BMI≥20 and BMI<20, with and without backpack. It was evaluated 15 boys (mean age 13.8±1.19 years, body weight 48.98±9.74 kg, height 1.62±0.09 m, BMI 18.95±2.64 kg/m2). The gait was evaluated by kinemetry based on video and a standardized backpack with load based on an average weight of the backpacks of all tested sub...

We evaluated the ability of the natural, plant-derived acaricides nootkatone and carvacrol to suppress Ixodes scapularis Say and Amblyomma americanum (L.) (Acari: Ixodidae). Aqueous formulations of 1 and 5% nootkatone applied by backpack sprayer to the forest litter layer completely suppressed I. scapularis nymphs through 2 d. Thereafter, the level of reduction gradually declined to < or =50% a...

Shoulder strain is a major limiting factor associated with load carriage. Despite advances in backpack designs, there are still reports of shoulder discomfort, loss of sensorimotor functions, and brachial plexus syndrome. The current study is aimed at characterizing mechanical loading conditions (strains and stresses) that develop within the shoulder's soft tissues when carrying a backpack. Ope...

  Background: Postural structure abnormalities have been highly prevalent among children in primary school children.The present study aimed to assess the relationship between the backpacks weight and method of carrying with postural structure disturbances in primary school children.   Materials and Methods: This cross-sectional study was performed on 472 primary school children in Karaj-Iran. ...

Load carriage is an inevitable part of military life both during training and operations. Loads carried are frequently as high as 60% bodyweight, and this increases injury risk. In the military, load is carried in a backpack (also referred to as a Bergen) and webbing, these combined form a load carriage system (LCS). A substantial body of literature exists recording the physiological effects of...

This chapter centres on how children's informal acquisition of textual knowledge is used or not when children and teachers interact in formal literacy situations involving digital tools preschool. When an interactive learning environment becomes meaningful the eyes children, there potential for creativity become competent agents their own context cultural environment. The empirical starting poi...

We examined the feasibility of providing ambient air during exercise and conditioned (cooled) air during rest on reducing physiological strain and optimizing tolerance time. Six male soldiers attempted 250-min exposures in hot/dry and hot/wet environments. Subjects wore chemical protective clothing over the combat vehicle crewman uniform and an air-cooled vest. They alternated between 50 min of...

Load carriage is an inevitable part of military life both during training and operations. Loads carried are frequently as high as 60% bodyweight, and this increases injury risk. In the military, load is carried in a backpack (also referred to as a Bergen) and webbing, these combined form a load carriage system (LCS). A substantial body of literature exists recording the physiological effects of...