Pneumatic-driven ankle stretching machine. - Yuma Shiraishi; Shogo Okamoto; Naomi Yamada; Koki Inoue; Yasuhiro Akiyama; Yoji Yamada (LifeTech, 2019)

Effect of Static Stretching Using Foot Stretching Device in the Elderly: An Interim Report. - Senri Hashimoto; Naomi Yamada; Shogo Okamoto; Yuma Shiraishi; Yasuhiro Akiyama; Yoji Yamada (GCCE, 2020)

Alignment of anatomical flexion axis when using one-degree-of-freedom ankle stretching exerciser. - Ko Suzuki; Shogo Okamoto; Yasuhiro Akiyama; Yuma Shiraishi; Naomi Yamada; Yoji Yamada (LifeTech, 2021)