Because of the differences in strength throughout the range of motion, the heaviest constand weight that can be lifted can be no heavier than the weight that can be lifted at the weakest point of the muscle. Variable resistance equipment is designed to compensate for this problem. Here are some key advantages of using this type of equipment.
- Safe, easy to use
- Good for beginners because less balance is required
- Productivity in a short amount of time
- Requires less supervision
- Ideal for circuit training