Impact attenuation provided by shin guards for field hockey

Low-energy impact testing of hockey shin guards was carried out using a drop test impact rig and a new physical setup protocol. Two brands of shin guards were impacted once (2.6 J, 3.3 J; without and with a sock), and impacted three times (3.3 J; with a sock). The peak force and impulse of a single impact increased with increasing impact energy (by approximately 30 and 7%, respectively) whilst repeated impacts increased the peak force and decreased the impulse (by approximately 70 and 3–9%, respectively, between one and three impact events). The presence of a sock attenuated impact force to a greater extent than the guards alone, at both impact energies. As a sock is usually worn over hockey shin guards, its presence contributes to enhanced protection to the lower limb.     

Viewing the transition to innovative learning environments through the lens of the burke-litwin model for organizational performance and change

Journal of Educational Change - Recent history has seen many schools shift from their original purpose of standardization and facts to focus on soft skills and global preparedness. The physical...