chadjohnathan
Iron
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How does the zygomaticus contribute to facial aesthetics?
The zygomaticus muscle originates at the outer part of the cheekbone and runs all the way to the corner of the mouth. The function of this muscle is to pull the outer ends of your mouth upward and outward when smiling. For this reason, it runs completely along the zygo muscles that contribute to submalar hollowing. For this reason, enlargement of the zygomaticus muscle can contribute to a hollow cheek look. It lifts skin further off the the maxilla, creating shadowing under the zygos.
Why can the zygomaticus major hypertrophy more effectively than other facial muscles?
We know that type II muscle fibers have much higher growth potential than type I fibers, but only get activated with high levels of effort
(motor unit recruitment). Muscles that endure sustained contractions are typically higher in type I fibers, which are more resistant to fatigue. The soleus, for example, which is constanttly working during walking and running, is primarily type I fiber dominant. The zygomaticus major, however, doesn't endure consistent contractions throughout the day. This is why you might get tired after smiling for a prolonged period of time. Good evidence for this is demonstrated in "Unique fiber phenotype composition and metabolic properties of the stapedius and tensor tympani muscles in the human middle ear"
pmc.ncbi.nlm.nih.gov
The zygomaticus major exhibited even higher fast twict muscle fiber dominance than quad muscles, bicep muscles, and the masseter.
How to maximize hypertrophy in any muscle
Muscle hypertrophy is maximized with high degrees of mechanical tension and motor unit recruitment.
Mechanical tension: slow contraction velocity
Motor unit recruitment: high degrees of effort, high central motor command
For this reason, an isometric is just as effectve for hypertrophy as an isotonic exercise, if not more effective. Because the zygomaticus cannot be traditionally loaded with weight, we need to incorporate isometric exercises to grow it.
Applying this to the zygomaticus
Because the zygomaticus is responsible for lifting the cheeks (smiling), we can do a smiling exercise to hypertrophy it.
The most effective isometrics consist of around 3-5 reps, each held for 3 seconds and with rest time to dissipate CNS fatigue.
GENERAL PROTOCOL
THIS TAKES LIKE 1 MINUTE THREE TIMES A WEEK
How does the zygomaticus contribute to facial aesthetics?
The zygomaticus muscle originates at the outer part of the cheekbone and runs all the way to the corner of the mouth. The function of this muscle is to pull the outer ends of your mouth upward and outward when smiling. For this reason, it runs completely along the zygo muscles that contribute to submalar hollowing. For this reason, enlargement of the zygomaticus muscle can contribute to a hollow cheek look. It lifts skin further off the the maxilla, creating shadowing under the zygos.
Why can the zygomaticus major hypertrophy more effectively than other facial muscles?
We know that type II muscle fibers have much higher growth potential than type I fibers, but only get activated with high levels of effort
(motor unit recruitment). Muscles that endure sustained contractions are typically higher in type I fibers, which are more resistant to fatigue. The soleus, for example, which is constanttly working during walking and running, is primarily type I fiber dominant. The zygomaticus major, however, doesn't endure consistent contractions throughout the day. This is why you might get tired after smiling for a prolonged period of time. Good evidence for this is demonstrated in "Unique fiber phenotype composition and metabolic properties of the stapedius and tensor tympani muscles in the human middle ear"
Unique fiber phenotype composition and metabolic properties of the stapedius and tensor tympani muscles in the human middle ear - PMC
The middle ear muscles have vital roles, yet their precise function in hearing and protection remains unclear. To better understand the function of these muscles in humans, the morphology, fiber composition, and metabolic properties of nine tensor ...
How to maximize hypertrophy in any muscle
Muscle hypertrophy is maximized with high degrees of mechanical tension and motor unit recruitment.
Mechanical tension: slow contraction velocity
Motor unit recruitment: high degrees of effort, high central motor command
For this reason, an isometric is just as effectve for hypertrophy as an isotonic exercise, if not more effective. Because the zygomaticus cannot be traditionally loaded with weight, we need to incorporate isometric exercises to grow it.
Applying this to the zygomaticus
Because the zygomaticus is responsible for lifting the cheeks (smiling), we can do a smiling exercise to hypertrophy it.
The most effective isometrics consist of around 3-5 reps, each held for 3 seconds and with rest time to dissipate CNS fatigue.
GENERAL PROTOCOL
- Smile as quickly as possible a few times for the post activation potentiation effect
- Wait 15 seconds to maximize effect
- Smile as hard as possible (enough to cause discomfort and mild shaking) for 3 seconds
- Wait 5 seconds
- Repeat 3 times
- Follow this protocol every other day
THIS TAKES LIKE 1 MINUTE THREE TIMES A WEEK