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I recently purchased a video and book about the via Francigena. I have only watched one of the extras which was a discussion by an orthopaedic surgeon who commented on the unfamiliar weight put on the body by a backpack. She said the pressure on the spine, hips, knees and ankles was such that a person should not carry more than 10% of their weight. I recall that on this forum others have questioned this magical, and seemingly arbitrary, 10% figure. I thought it interesting that an orthopaedic surgeon also recommended this rough figure.
70lt packs with 15-20kgs may seem like a good idea but they could be doing permanent damage.
70lt packs with 15-20kgs may seem like a good idea but they could be doing permanent damage.