Stair ascent and descent at different inclinations

Does Interlimb Knee Symmetry Exist After Unicompartmental Knee Arthroplasty?

“…Compared with other literature, our flexion/extension kinematic pattern was similar, and angular displacement magnitudes were within 5°, on average, of those reported for healthy young and older populations (Table 4). In addition, the UKA and non-UKA knee kinematic time patterns of both groups were qualitatively consistent with the patterns of healthy knees described by others [25,27] for stair ascent (Fig. 1).…”

“…Moreover, because their data came from group ensemble curves, their peak magnitudes likely were attenuated. Based on prior literature, knee kinematics of individuals with an UKA compared with a TKA may be more similar to healthy knees [27,32]. Although very few comparable studies of patients undergoing TKA during stair ascent exist [9], multiple studies have demonstrated persistent gait asymmetry after TKA during level walking [2,5,25,35].…”

Causes of motor system overload in step aerobics: Literature review

“…Values of m-lGRF range from 0.04 BW to 0.06 BW, while values when climbing up stairs and walking on a flat surface do not usually exceed 0.045 BW [32].…”

“…This is especially significant in stepping off. When vGRF reaches its maximum values in stepping off, both instructors and nonprofessionals place their foot in dorsiflexion (19.7-18.5º), not in plantar flexion [32]. This fact may contribute to the causes of ankle joint injuries.…”

“…Walking up stairs begins with the forefoot striking the ground, followed by heel contact. In step aerobics, it is the heel which strikes the surface first, meaning the apGRF is twice as high as climbing up stairs [32].…”