![]() To confirm it wasn't just a typo on one page of ExRx, I also looked at their biceps brachii page, which also confirms that the short head is the one that enters active insufficiency when the shoulder joint is flexed. This would also then imply incline curls preferentially target the short head, being at the opposite end of the spectrum. It claims that the short head enters active insufficiency (rather than the long head) when the shoulder joint is flexed, meaning the long head is preferentially activated during preacher curls. And I usually consider ExRx to be a gold standard of sorts when it comes to fitness information. Yet, when browsing ExRx, I noticed that it claims literally the opposite. Preacher curls target the short head.Īnd here are several sources that also confirm this logic. And then when the shoulder is flexed (arms in front of the body), it shortens the long head and puts it into active insufficiency, meaning the short head is preferentially activated during elbow flexion. This is because the tendon of the long head of the biceps passes over the shoulder joint, through the rotator cuff, and connects to (originates from) the scapula behind the glenohumeral joint. The way I've learned it, and that makes most sense to me, is that when the shoulder is extended (arms behind body), it stretches out the long head of the biceps more, causing them to be primarily targeted when you flex the elbow in this position (for example, incline curls). I'm finding opposite claims online specifically in regards to shoulder positioning in targeting the long vs short head of the biceps. This is not a place to post threads where the only discussion to be had is congratulating the OP.This is not a place for memes, rage comics, image macros, or things that provide no value.If you want a 'tl dr' or 'ELI5' you're in the wrong place. AF is not a place where information will be spoon fed.If you have a condition that is affecting your lifts, you need to talk to a medical professional. A sub that will dispense medical advice.A place for you to spam your crappy products.Somewhere where intelligent discourse and thoughtful questions are the norm, not the exception.A gathering place for enthusiasts, athletes, researchers, and everyone in between to discuss shared interests.A place for you to ask questions and learn from others on the above topics.A place to discuss fitness, health, nutrition, and training programs beyond the beginner or introductory stages.Primarily aimed at non-beginners, though all are welcome. This reddit is a place to learn, teach, and share information on the myriad ways we all work to improve our health and fitness, and achieve our training goals. ![]()
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