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. 2022 Jan 11;8:792436. doi: 10.3389/fmed.2021.792436

Figure 2.

Figure 2

Demonstration of stretching training exercise (STE). The figure mainly described the stretching exercise flow of knee joint flexion and extension in different postures. (A) Lower limb flexion and extension in supine position, (B) lower limb flexion and extension in prone position, (C) sit and stand test training, (D) alternating one-legged stair support tasks, (E) static squatting training against the wall.