crel22 skrev:Bjørnen skrev:crel22 skrev:crel22 skrev:vQlse skrev:For at quote T-nation
T-nation.com skrev: PULL-UPS/CHIN-UPS
Misconception #8:
"They say pull-ups work your lats more than chin-ups because they minimize the use of your biceps. They're also harder so they must be better."
I can hear the whistle of incoming flames already. Some of you are probably thinking, "Surely this can't be a misconception." Well, just hang in there (pun intended) and hear me out. Others may be scratching their heads and saying, "But aren't pull-ups and chins just different names for the same exercise?" No, they're not. Let's once again define our terms. When you do pull-ups, your hands are pronated (palms facing away from the body when placed on the bar), and you typically grip the bar a bit wider than shoulder width.
This is a pull-up.
When you do chin-ups, your hands are supinated (palms facing towards the body when placed on the bar) and you grip the bar right around shoulder width, or a bit narrower or wider depending on individual comfort.
This is a chin-up.
Most people find that chin-ups are easier because you're better able to use your biceps, and pull-ups are harder because you can't use your biceps as much. They likely deduce that because of this, pull-ups allow you to put more stress on the lats, and therefore are better for lat development. It's an understandable conclusion, but it's wrong.
In the chin-up, the biceps are placed in a much more efficient pulling position. This enables one to do more reps, or use more weight, as compared to the pull-up, which places the biceps in a comparatively weaker pulling position. If we are trying to get maximal development of the lats, we want to maximize the loading (and loading duration) of the involved musculature by placing the smallest muscles in a position where they can last the longest or be loaded the greatest so that they don't give out prior to the larger muscles involved. Chin-ups accomplish this. Pull-ups don't.
Make no mistake about it, in the pull-up the elbow still flexes, and the movement will be over when the elbow can no longer flex. In addition, the lat contracts through a greater range of motion at the glenohumeral joint on the chin-up. Generally, it's always better to take a muscle through its full safe range of motion for optimal development.
Many times, though, trainees will become concerned with where they "feel" the exercise and they imagine they "feel" the pull-up more in the lats and feel chin-ups more in the biceps. However, unless you have some crazy strength imbalance and can curl your bodyweight, you don't need to worry about feeling chin-ups in your biceps.
By the way, about that upper back "pump" you think you're feeling in your lats after a set of pull-ups: what you're actually feeling is the teres major (a.k.a the "mini-lat"), a relatively small muscle that's being recruited more in the pull-up variation because of the greater adduction component at the shoulder.
That "lat pump" you feel after doing pullups is actually the little teres major.
I'm not suggesting that the pull-up isn't a viable alternative to chins on occasion, but I do believe that if you're using them to maximally develop your lats because you think your biceps aren't involved as much, you need to re-examine your approach.
Chins are probably a better option because you can increase the duration of loading on the lats and use more load in comparison along with an increase in the range of motion. The arm development from chins is a nice side benefit as well, which I'm sure many wouldn't complain about.
http://www.t-nation.com/readArticle.do?id=1954579
hmm okay, men vil gerne lige høre jer andres mening om dette
vil stadig gerne høre hva folk mener om denne artikel. er det at foretrække at køre UH krophævninger, hvis man vil ha større vinger? kører nemlig selv OH kropshævninger, da det er det folk siger som giver bedst for vingerne
Jeg pakker seriøst masse på vingerne, når jeg begiver mig ud i noget seriøst UH chinups. Jeg kan virkelig mærke vingerne arbejde og ømheden bagefter.
Men prøv dig frem, se om du oplever det samme som jeg.
jeg vil helt sikkert prøve UH kropshævninger med vægt. syns abre hele tiden folk siger at OH kropshævninger er vejen frem til større vinger
Jeg kan ikke helt følge hans argument om at man kan have mere vægt på ved chins og derved større load (mere vægt) på lats... grunden til at lats kan bære mere vægt, er pga. moment, så hvis dine lats kan klare 10 gentagelser uden vægt i pullups og 10 gentagelser med 10 kg i chins.. Er det ikke ensbetydende med større load, men det er fordi at der er et større moment i pullups og derved skal der større anstrengelse til at løfte en op... Belastningen på musklen vil i eksemblet være det samme (jaja forsimplet, men stadig bedre end hans arugment)
Desuden er jeg uenig i hans range of motion argument... Muligt at man strækker lig længere ud i chins, men når der tales om rom vil jeg mene at den er næsten den samme på lats, selvom den ikke er på resten af kroppen, det er vel ROM på den ønskede muskel der er vigtig...
Min konklusion er, ønsker man at lats (hoved formålet), og biceps er den begrænsede faktor, vælges altid Pullups (bred) er lats derimod begrænsende faktor, er der valgfrihed... Med forbehold for skulder problemer mm.
Der er også folk der gerne vil træne lats op uden at få for store biceps, de kan også med fordel vælge pullups...
Igen ja man kan oftes tage flere gentagelser i chins, dette er fordi vinklen (dermed momentet) er mindre...