LeBron Asks: What muscles do we use when shooting a basket?

40문장 0% 인도네시아어 번역 0명 참여 출처 : 칸아카데미
0 영상보기
영어 to
인도네시아어
2단 보기 1단 보기
번역 0%

LeBron Asks: What muscles do we use when shooting a basket?발음듣기

다른 번역문 등록

[LEBRON JAMES] What muscles do I use when I take a free throw?발음듣기

다른 번역문 등록

[SAL KHAN] Excellent question, LeBron.발음듣기

다른 번역문 등록

So you can imagine whenever you're doing anything - whenever you stand, or even run - you're using a ton of muscles just to keep your balance -발음듣기

다른 번역문 등록

Just to keep your body rigid.발음듣기

다른 번역문 등록

But what we're going to focus on are the muscles that are directly acting on the ball to make the ball go in that direction - to make it accelerate upwards and towards the basket - which you would hopefully do when you are taking a free throw.발음듣기

다른 번역문 등록

So, the muscles that are doing that are the ones that help your fingers go in that direction, help the palm of you hand going in that direction, and help your entire forearm to go in that direction.발음듣기

다른 번역문 등록

Obviously, at the same time, there are many other muscles at work, even the muscles that keep your entire arm above your head like this - the muscles that keep you standing.발음듣기

다른 번역문 등록

But we're going to just focus on these muscles right over here.발음듣기

다른 번역문 등록

So first, the muscles that allow your fingers to go in the direction that you want the ball to go, and your palm.발음듣기

다른 번역문 등록

And you might be surprised to find that those muscles actually sit in the forearm. most of those muscles actually do not sit in the hand.발음듣기

다른 번역문 등록

Those muscles are actually here.발음듣기

다른 번역문 등록

So the muscles in the front of your forearm right here, they are actually all about flexing the fingers and the hands in that direction.발음듣기

다른 번역문 등록

There are a bunch of names for them.발음듣기

다른 번역문 등록

And I encourage folks to look them up.발음듣기

다른 번역문 등록

But it is a really interesting thing, because we are often used to muscles being directly where the motion is.발음듣기

다른 번역문 등록

But in this case, these muscles, when they're in action, they contract.발음듣기

다른 번역문 등록

And muscles, when they're in action do contract.발음듣기

다른 번역문 등록

So they're going to contract and they are going to pull essentially on tendons.발음듣기

다른 번역문 등록

They're going to pull the whole hand to that way.발음듣기

다른 번역문 등록

You could view as a kind of pulley.발음듣기

다른 번역문 등록

So if this was... If you view your wrist joint as kind of pulley.발음듣기

다른 번역문 등록

And if you had a rope that is attached to another block.발음듣기

다른 번역문 등록

And that block you can view as your hand and your finger.발음듣기

다른 번역문 등록

So that block is your hand.발음듣기

다른 번역문 등록

These muscles right over here, they contract this way so its ..... pulling on this rope.발음듣기

다른 번역문 등록

And were to pull on this rope, what would happen to this block up here?발음듣기

다른 번역문 등록

Well, this block up here is going to go in that general direction.발음듣기

다른 번역문 등록

So that what's keep your hand and your fingers going in that way.발음듣기

다른 번역문 등록

But what about the entire forearm?발음듣기

다른 번역문 등록

So once again.발음듣기

다른 번역문 등록

The muscles that get your entire forearm going in that direction aren't in your forearm.발음듣기

다른 번역문 등록

They are in the back of your upper arm.발음듣기

다른 번역문 등록

So they are right over here.발음듣기

다른 번역문 등록

Often referred to as the triceps.발음듣기

다른 번역문 등록

The official name are the triceps brachii, but they're right over here and it's called triceps because kind of three-headed muscle.발음듣기

다른 번역문 등록

There are three muscle bundles that are going on.발음듣기

다른 번역문 등록

And when these muscles over here, your triceps, when they contract they allow your entire forearm to essentially straighten out on your elbow so it will go in that direction.발음듣기

다른 번역문 등록

In this case, when this muscle, the triceps, contract your entire forearm is going to .... on your elbow.발음듣기

다른 번역문 등록

And go like that, which will allow the basket to go in the intended direction.발음듣기

다른 번역문 등록

칸아카데미 더보기더 보기

전체보기
Top