What’s in Class This Week?
A new series called What’s in Class This Week will provide you with an intro to what I’m currently teaching at AFNA! If you see something you like, contact Roger for an invitation to join our class, or schedule a campus tour today! If you’ve already graduated, you are always welcome back to audit your favorite classes!
FNT 130 – The Science of Exercise
Last week, we kicked off one of the most challenging courses at AFNA: The Science of Exercise. In this course, we explore everything to do with the scientific components of being a personal trainer. From the skeletal system to the muscular system, we cover all the joint movements as well as the corresponding muscles. Afterwards, we transition to exercise physiology, where we explore how muscles contract, as well as how the cardiovascular system works.
Specifically, next week will be centered around labeling and identifying many of the most common muscles trainers use in their exercise prescription.
Will I see you there?
Muscles: How Do They Work?
In a nutshell, muscles function very similarly to springs. Each muscle in the body starts on one bone (called the origin) and attaches to another bone (called the insertion) to cover a joint. For example, the Biceps Brachii starts up above the shoulder, covers the entire upper arm bone (the humerus – HA), and ends in the forearm under the elbow. In other words, the biceps muscle covers the elbow joint.
For the bicep to move the forearm, a signal must travel from the brain to the muscle in order to stimulate it. When the muscle receives this signal it contracts, and shortens by moving the insertion closer to the origin. This all happens in the blink of an eye. In fact, your muscles are almost always contracting! While the contraction amount may change, the process works the same for all muscles.
When you put together multiple muscle contractions in synchronized and coordinated efforts, you may find yourself exercising! Lifting weights, for example, is simply manipulating the process of muscle contraction over and over again to stimulate growth. And running, for instance, uses the same mechanism, only quicker and for longer periods of time.
To learn more, contact Roger at the Admissions Offices for a tour!