Fig. 2From: Musculoskeletal Lower Limb Injury Risk in Army PopulationsMean oxygen uptake (VO2) versus shoe forefoot longitudinal bending stiffness. Reproduced from Roy and Stefanyshyn, [53] with permission. The blue solid line is the data presented by Roy and Stefanyshyn [53], while the red dotted line is a potential trend of energetic cost with shoe longitudinal bending stiffnessBack to article page