Abstract
Soldiers are fielded with a variety of equipment including battery powered electronic devices. An energy harvesting assault pack (EHAP) was developed to provide a power source to recharge batteries and reduce the quantity and load of extra batteries carried into the field. Little is known about the biomechanical implications of carrying a suspended-load energy harvesting system compared to the military standard assault pack (AP). Therefore, the goal of this study was to determine the impact of pack type and load magnitude on spatiotemporal and kinematic parameters while walking at 1.34 m/s on an instrumented treadmill at decline, level, and incline grades. There was greater forward trunk lean while carrying the EHAP and the heavy load (decline: p < 0.001; level: p = 0.009; incline: p = 0.003). As load increased from light to heavy, double support stance time was longer (decline: p = 0.012; level: p < 0.001; incline: p < 0.001), strides were shorter (incline: p = 0.013), and knee flexion angle at heel strike was greater (decline: p = 0.033; level: p = 0.035; incline: p = 0.005). When carrying the EHAP, strides (decline: p = 0.007) and double support stance time (incline: p = 0.006) was longer, the knee was more flexed at heel st...Continue Reading
References
Sep 1, 1985·Ergonomics·H Kinoshita
Dec 6, 2003·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Michael D LewekLynn Snyder-Mackler
Jul 30, 2005·Journal of Applied Physiology·Justus D Ortega, Claire T Farley
Sep 10, 2005·Science·Lawrence C RomeTaeseung D Yoo
Sep 20, 2005·Journal of Biomechanics·Andrew Stuart McIntoshDeborah R Vickers
Oct 20, 2006·Ergonomics·Renee L AttwellsNeil J Mansfield
Aug 12, 2008·Gait & Posture·Xu XuGary A Mirka
Sep 30, 2009·Ergonomics·Stewart A Birrell, Roger A Haslam
Jan 9, 2010·Military Medicine·Claudy L KoerhuisNico J Delleman
Jul 27, 2010·Gait & Posture·D D EspyY-C Pai
Mar 14, 2012·Ergonomics·Katrina M SimpsonJulie R Steele
Aug 24, 2013·Journal of Biomechanics·Amy SilderThor Besier
Aug 26, 2014·Applied Ergonomics·Kari L LoverroJeffrey M Schiffman
Nov 6, 2015·Human Movement Science·C Roger JamesBarry T Bates
Sep 12, 2016·Clinical Biomechanics·Brittney A Luc-HarkeyBrian Pietrosimone
Feb 6, 2017·Journal of Human Kinetics·Rebecca E FellinLeif Hasselquist
Aug 2, 2017·Journal of Biomechanics·Shani Kimel-NaorMeir Plotnik