① The sole to calf muscles are stiff and the range of motion of the ankle is narrow.
⇒ Knee stress ↑
② The center of leg movement is the knee
⇒ Knee overuse
① Knee movement is only linear movement of flexion / extension
→ Lateral movement / rotation is hip joint and ankle-forefoot
→ Knee stress when range of motion decreases ↑
② As you get older, your movements become smaller and you stop using big muscles.
→ Use only easy-to-use places
→ Knee overuse
① Widen the range of motion of the ankle (top priority) and hip joint (next)
⇒Golf ball massage, toe raising, heel raising, hip and ankle rotation
② Use the hip joint firmly (get the correct movement)
⇒ Pull your butt back without curling your back
* Slowly move the range of motion of the ankle and hip joint to the maximum
→ Improved flexibility