Four different 4 x 6″ color cards UV coated in plastic sleeve.
There are three different field tests for threshold with a workout card to match. The protocol and the scoring for each field test are described on the card. One card, the forth one, is the Threshold Training System card on the front and the Threshold Zones card on the back. This card is key because it gives you your individualized training zones. Each individual card is in full color and UV coated to prevent wear and tear. Here’s the list of the four different field tests for threshold heart rate:
1.Two-by-Four Minutes Threshold Field Test
2.The “Can You Speak Comfortably?” Foster Threshold Field Test
3.The Word Association Field Test
4.Threshold Training Card