YourUniverse
Member
Thats my understanding, yes - NP
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ah, i see, the weight is not pulling on the hams to elongate them. that is the difference, yes?
You are making this far more complicated than it really is. Lifting is concentric. Lowering is eccentric. If you lift a weight or yourself and then lower the weight or yourself, you have performed concentric and eccentric exercise.@paymanz
ok. i guess i will need to read Charles Poliquin or something because i am still confused. If what you are saying is true, then i don't understand why lowering yourself down from a chinning bar wouldn't be concentric under load for triceps but eccentric without load for biceps. The biceps is lengthening, and if i understand what you are saying, the lengthening muscle is not load bearing.
Help. I followed this advice, and now I'm stuck on top of a hill, afraid to walk down it because Peat says not to do eccentric exercise. What to do?Lifting weights is concentric. Putting them down is eccentric.
Walking uphill concentric. Downhill eccentric.
Swimming is concentric.
I think you need both though. Eccentric strength protects muscles from damage too.
The opposing muscle group is not under load; it's lengthening, yes, but not under load. To take your example, if you contract your quads under load (such as during a squat), it's the quads that are under load, not the hamstrings. The hamstrings lengthening under load would have to entail the hamstrings being loaded in the first place, such as doing a leg curl during the phase of the movement where your legs are lengthening.If you contract your biceps muscle, your triceps muscle will be lengthening. If you are contracting a muscle under load, then the opposing muscle group will be lengthening under that load at the same time - so if you contract your quads under load(concentric), you are also lengthening your hamstrings under load(not concentric).
Stay there! You’re at a higher altitudeHelp. I followed this advice, and now I'm stuck on top of a hill, afraid to walk down it because Peat says not to do eccentric exercise. What to do?
“Eccentric” movements involve “contracting”/ hanging is simply just stretchingThanks @philalethes - this makes sense to me now. What about hanging? Is hanging eccentric or partially eccentric for the biceps?
Stay there! You’re at a higher altitude
Thanks @philalethes - this makes sense to me now. What about hanging? Is hanging eccentric or partially eccentric for the biceps? Does there need to be a horizontal component to the force on the biceps for them to be considered to be under load? The biceps contraction pulls the forearm up horizontally, it does not just pull upward.
Something I have been confused about is: let’s say I am performing a static contraction against an immovable object. Since there is no “load” being exerted on my muscles, even if I dynamically lengthen my muscle mid exercise, that is still isometric correct?under load
There's definitely still a load on your muscles, just as there's still a load on your muscles if you pause halfway through a squat, deadlift, pull-up, bench press, overhead press, or any other exercise; that you're still doesn't make the load disappear. In the case of trying to push an "immovable" object it's whatever is keeping the "immovable" object "immovable", which is typically various normal forces acting to give it way more friction than you're able to overcome. Think about it this way: if you're at the bottom of a squat and pushing all you can, but not budging even a centimeter upward, you're essentially in the same boat, working isometrically against the weight, but more clearly under load. If the muscles that are under load are lengthening it would still be an eccentric movement.Something I have been confused about is: let’s say I am performing a static contraction against an immovable object. Since there is no “load” being exerted on my muscles, even if I dynamically lengthen my muscle mid exercise, that is still isometric correct?
Also, why is eccentric exercise so bad in the first place? I understand it is linked with more muscle damage and DOMS, and peat says to avoid, but I have been wondering what exactly makes it so harmful; ie, HOW is the mechanism different
Ah okay, that clears it up for me thanksIf the muscles that are under load are lengthening it would still be an eccentric movement.
I think there is more to the picture. It has been shown that training to failure with negative only training produces far greater muscle damage than training to failure positively (I can provide resources if you’re interested). I pretty sure there is something uniquely damaging about eccentric lengthening while contracting that is not just due to training to failure. But I don’t know the mechanism behind this that is the source of my confusion/curiosityAs for why eccentric exercise is typically considered bad and why it leads to muscle damage is because uncontrolled lengthening against a load means you're exerting yourself maximally and still not being able to exert the same force as the load, so it's essentially just as going to failure in other exercises
Ah okay, that clears it up for me thanks
I think there is more to the picture. It has been shown that training to failure with negative only training produces far greater muscle damage than training to failure positively (I can provide resources if you’re interested). I pretty sure there is something uniquely damaging about eccentric lengthening while contracting that is not just due to training to failure. But I don’t know the mechanism behind this that is the source of my confusion/curiosity