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Forum » do muscle insertions matters for compounds lifts ?
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Thread: do muscle insertions matters for compounds lifts ?

post 1618902991 10-09-2020, 01:07 PM
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do muscle insertions matters for compounds lifts ?

bench&squat&dead&ohp


by insertions i mean short or long muscle.


inb4 curls
post 1618903251 10-09-2020, 01:09 PM
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obviously
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post 1618903391 10-09-2020, 01:10 PM
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They matter on all lifts.

There are also skeletal advantages and disadvantages.
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post 1618903701 10-09-2020, 01:13 PM
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Insertions have no bearing on force production because everyone's tendons insert into the same place anatomically. Where insertions start to matter is the limit to how much muscle you can put on, allowing you to produce more force.
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post 1618903771 10-09-2020, 01:14 PM
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Depends on what you mean by “matter”

Just get in there and lift, eat, sleep and see what your genetics has conferred upon you
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post 1618904161 10-09-2020, 01:17 PM
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Originally Posted By MBisonSon⏩
They matter on all lifts.

There are also skeletal advantages and disadvantages.
skeletal is obvious one, but always wanted to know do a guy with a short chest have the same power output as someone with long one
Originally Posted By BeginnerGainz⏩
Depends on what you mean by “matter”

Just get in there and lift, eat, sleep and see what your genetics has conferred upon you
jezzz, you can't even ask a question anymore here, i was genuinely curious
post 1618905171 10-09-2020, 01:26 PM
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I remember Frank Yang talking about shorter muscles being more explosive, but who tf knows with him. I've also heard of long bellies having greater strength potential in the long run (just takes longer to build).

Random fuks over here seem to corroborate these things. Seems like it's not a big deal overall though.
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post 1618905781 10-09-2020, 01:32 PM
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Yeah i dont think people have any clue what origins and insertions actually are. Lets look at the Bench Press and the pectorals



The pectoralis major inserts on the medial aspect of the humerus and to get a full activation of a muscle, you first need to get the origin and insertion points as far away from each other as possible (a stretch) and then bring them as close together as possible (contraction) but both in a safe manner. If the insertion point is not in the same place on the humerus then the force generation would be extrememly varied because the momentum arm would be vastly differnet. THis principle is the exact same int he biceps too because i see this type of flawed logic applied there all the time
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post 1618906451 10-09-2020, 01:39 PM
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Originally Posted By tank2003⏩
Yeah i dont think people have any clue what origins and insertions actually are. Lets look at the Bench Press and the pectorals



The pectoralis major inserts on the medial aspect of the humerus and to get a full activation of a muscle, you first need to get the origin and insertion points as far away from each other as possible (a stretch) and then bring them as close together as possible (contraction) but both in a safe manner. If the insertion point is not in the same place on the humerus then the force generation would be extrememly varied because the momentum arm would be vastly differnet. THis principle is the exact same int he biceps too because i see this type of flawed logic applied there all the time
good post, so do all people have the same origin and insertion ? so the longer distance between these two points can generate more momentum ?
post 1618906911 10-09-2020, 01:44 PM
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Originally Posted By kinzu1996⏩
good post, so do all people have the same origin and insertion ? so the longer distance between these two points can generate more momentum ?
DNA coding. Its basic instructions in all people. If the pec major DIDNT insert on the humerus, then the muscle cant act on that joint and you wouldnt be able to generate as much force on the BP because only the coracobrachialis would be doing the work. If the insertion was farther down the arm (toward the elbow), then you'd be stronger because you'd have greater mechanical advantage but your shoulder and arm would be deformed looking. Our arm pits look the way they do because of where the insertion point is. Move the insertion down and that area deforms a bit more each time
“That is not dead which can eternal lie, And with strange aeons even death may die.” - The Nameless City by HP Lovecraft
"The higher the prevalence of infectious diseases the higher the probability of totalitarian political attitudes."
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"The search for a moral equivalent of war continues to define American Liberalism to this day."
post 1618915301 10-09-2020, 03:14 PM
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I've always had the impression, especially from wrestling that people with really long muscles feel way stronger. But no clue if bro sceince, my imagination or just a coincidence due to small sample size.
Originally Posted By tank2003⏩
DNA coding. Its basic instructions in all people. If the pec major DIDNT insert on the humerus, then the muscle cant act on that joint and you wouldnt be able to generate as much force on the BP because only the coracobrachialis would be doing the work. If the insertion was farther down the arm (toward the elbow), then you'd be stronger because you'd have greater mechanical advantage but your shoulder and arm would be deformed looking. Our arm pits look the way they do because of where the insertion point is. Move the insertion down and that area deforms a bit more each time
Thx for the explanation.
What causes muscles (especially bis) looking longer or shorter?
post 1618915431 10-09-2020, 03:15 PM
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Yes, it’s called leverage.
post 1618916241 10-09-2020, 03:24 PM
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Originally Posted By MuscleXtreme⏩
Yes, it’s called leverage.
This OP but it has nothing to do with insertions.
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