Final answer:
The starting volume for a lower extremity plyometric program should generally begin at 80 to 100 foot contacts, eventually progressing up to 200 foot contacts.
Step-by-step explanation:
When designing a lower extremity plyometric program, the starting volume of foot contacts for beginners should generally be around 80 to 100 and can progress up to 200 foot contacts for more advanced training. Progression should be gradual to ensure safety and effectiveness of the plyometric training program. It's essential not only to focus on the number of foot contacts but also on the intensity and complexity of the exercises. The variations in intensity and complexity will cater to different training phases and individual needs.