Smith, TinaLuo, JinMetsios, George2020-06-252020-06-252017-07-23Smith, T., Luo, J. and Metsios, G. (2017) Osteogenic potential of external mechanical loading during walking in sedentary and non-sedentary adults, XXVI Congress of the International Society of Biomechanics, 23rd -27th July 2017, Brisbane, Australia.http://hdl.handle.net/2436/623300Sedentary behaviour is generally regarded as having deleterious effects on cardiometabolic health, although little is known about its specific association with bone health. Impact forces generated as the foot contacts the ground during activity have the potential to act as a stimulus for bone maintenance and development. Therefore, increased sedentary behaviour may reduce the time available to gain osteogenic benefits from impact-based activity. Peak ground reaction force is commonly used as an estimate of loading intensity when determining the osteogenic potential of activity [1]. Dynamic, high impact, high frequency activities have been shown to be most effective at applying an osteogenic stimulus [1], although low level impacts have been shown to beneficially modify bone geometry [2]. Therefore, differences in the characteristics of low impact activity have potential to influence bone health. As impact forces are attenuated as they travel up the body, exploration of mechanical loading at regions such as the spine, require further investigation. External force due to impact is related to acceleration; therefore an accelerometer attached to the spine can provide an estimation of the mechanical loading. The aim of this study, therefore, was to investigate associations between sedentary and nonsedentary behavior on the osteogenic potential of walking, and bone mineral density (BMD) of the lumbar spine.application/pdfenbiomechanicsbone loadingConference contribution2020-06-17