As you begin to read the books and talk to coaches about how to train, one begins to feel engulfed on what to use for their training. Should an athlete use Zones based on a Heart Rate Monitor, should an athlete monitor their performance on a bike with a power meter, should an athlete use GPS to monitor their pace, or should an athlete go old school and go with perceived effort?
There can be made arguments for each type of training tool. Some provide very and precise training measurements while others provide useful, but more old school ways of training. In my opinion, it depends on the athlete and exactly what and why they are using the equipment.
Check out this article that details some of the different training tools and ways to use them. For more questions and information, feel free to email Jamie at email@example.com.