Let’s talk about type I muscle fibers!
You’ve probably heard me say these things regarding fitness sessions:
“Sweating doesn’t necessarily indicate a successful workout.”
“The intensity of your fitness session isn’t what matters most.”
“Muscle soreness in the days following your workout isn’t the indicator of success.”
Here’s what does count: targeting the various muscle fibers! This is what will get you visible results, efficiently.
Muscle is not just a simple mass. For starters, there are different types of muscles, i.e. heart muscle, skeletal muscle and smooth muscle. In this post, we’re focusing on skeletal muscle: abs, calves, glutes, biceps, etc.
There are also different types of fiber found in skeletal muscles: Type I, IIA, IIB or IIX.
Every fiber behaves differently. Some contract slowly, others quickly. This is called slow-twitch (type I) and fast-twitch (type II).
Type I muscle fiber is a slow contraction fiber, which is activated during the following types of activities:
- Long distance running
- Fast walking
- Endurance training
Type I muscle fibers are quite small and have a high concentration of capillaries. In trained muscles, these fibers contribute to that muscular look which bodybuilders love :).
These fibers produce little strength but can stay engaged longer than others, and also tire more slowly than types IIA and IIB/IIX.
As a fitness coach, I recommend at least 5 sessions/week that engage Type I muscle fibers, at 45 min/session.
I know it’s a commitment, but hey, your body deserves that time!
Feel like you’re often struggling to carve out exercise time? Click HERE to read my secrets on never giving up even with a crazy schedule!
YOU CAN DO IT 😊
Tags: exercise fitness fitness coach fitness trainer lebootcamp muscle fiber type I muscle fibers Valerie Orsoni