https://athleticquickness.com/category/isometrics/ So, what is an isometric training exercise? First, the word ISOMETRIC is defined as follows: “Iso” means equal or the same, and “metric” means length. Combining these two definitions we get “equal or the same length.” Now isometrics, as it pertains to muscle training, involves tensing muscles against other muscles or against an immovable object while the length of the muscle remains unchanged. For an isometric exercise to be effective, this muscular tension must be maintained over a certain period of time. Therefore, isometric training is best defined as follows: The sustained contraction of a muscle over a certain period of time where the length of the muscle remains unchanged. The following are a few examples of an isometric contraction: Take a 20 pound weight and perform biceps curl. Hold a position halfway between the repetition for 10 seconds. The length of your biceps muscle doesn’t change during this time but a force is still being applied. Example 2. Push against a wall for 10 seconds. The wall doesn’t move and neither does the length of the muscles in your arms pushing against it and again, a force is still being applied. To learn more how isometric training can recruit your fast twitch muscle fibers into a workout, click the link in the description box. https://athleticquickness.com/category/isometrics/