HOS - E100 Belted Squat Machine: When exercising with this machine, the main areas of focus are the lower limbs and the core，The quadriceps femoris in the thighs exert force when extending the knees, which can enhance the strength of the front of the thighs. The gluteus maximus contracts strongly when rising from the squat position, which is beneficial for shaping the buttocks and increasing gluteal muscle strength. The gastrocnemius and soleus in the calves maintain stability and provide support during the movement, and are also exercised. At the same time, the core muscle groups continuously exert force to maintain body balance, which can enhance core stability and strength.