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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Gait Posture. 2018 Mar 6;62:111–116. doi: 10.1016/j.gaitpost.2018.03.001

FIGURE 1.

FIGURE 1

Trial types and partitioning methods. Two sets of trials were collected: Midtarsal trials (left column) isolated the hindfoot and forefoot segments on separate force plates, while MTP trials (right column) isolated the forefoot and hallux segments on separate force plates. Inverse dynamics computations were performed three times: (1) using the two adjacent plates (2Plate method, top row), (2) using the summed force plates, assigning the force to each segment sequentially based on anterior-posterior center-of-pressure location (CPcross, 2nd row), and (3) using the summed force plates, the vertical forces from the two individual plates, and an assumption of proportionality (PRESS, 3rd row). Accuracy of the CPcross and PRESS methods were assessed by comparing estimates of midtarsal and MTP joint kinetics (moment and power) to those obtained from the 2Plate method.