Machine Calf Raise

Execution
1. Place the balls of your feet on the edge of the footplate (such as on a leg press machine), and lower the weight as far as possible.
2. Push the weight up as far as you can, contracting your calf musdes.
3. Slowly lower the weight down to the start position.
Muscles Involved
Primary: Gastrocnemius.
Secondary: Soleus.
Anatomic Focus
Foot position: Point your toes straight ahead (a) to target the whole gastrocnemius muscle. Point your toes out (b) to emphasize the inner (medial) head, or point your toes inward (c) to target the outer (lateral) head of the gastrocnemius.

Foot spacing: Positioning your feet hip-width apart targets the whole gastrocnemius muscle. A wide stance emphasizes the inner (medial) head, whereas a narrow stance targets the outer (lateral) head.
Body position: In biomechanical terms, this exercise could be called a seated straightleg calf raise. Keep your knees stiff so that movement occurs exclusively at the ankle. Keeping your knees fully straight helps isolate the gastrocnemius. A slight bend at the knees allows the soleus to contribute to the movement.
Range of motion: To maximize the range of motion, aim for a full stretch at the bottom and full squeeze at the top.
Resistance: On the leg press machine, resistance is transmitted through the footplate. Since the knees are held straight and the torso Is bent at 90 degrees to your legs, this exercise is similar to the donkey calf raise described earlier.
VARIATION
Calf-sled machine: This is another way to perform seated straight-leg calf raises.