what's up YouTube 大家好
This is coach Dnnie with ElevateYourself.org 我是ElevateYourself.org的丹尼教练
This is part two of arm swing mechanics 这是关于扣球摆臂的第二部
If you haven't seen the first one 如果你还没收看第一部
that teaches how to have proper arm swing mechanics when you're spiking 教你如何在扣球中正确摆臂的视频
please watch the video link up here 请观看这个链接上的视频
Or you can click on the link in the video description below 你也可以点击本视频简介下面的链接
In this video we'll talk about how to generate topspin on the ball 我们将讲述如何让球产生上旋
And why that's important when you're spiking 以及为什么它在扣球中是如此重要
this video was suggested by shin82cris 这条视频是应shin82cris的要求拍摄的
so thank you so much for this video suggestion 所以很感谢你对这条视频的建议
When you're spiking you want to generate as much topspin as possible 当你扣球的时候你要让球产生尽可能多的上旋
Because it will allow you to spike more balls in 因为这样你才能更有机会将球扣进界内
And here's the reason why if you don't generate topspin on the ball 这也是为什么如果你没有让球上旋
and it floats it would stay straight as it going down 球会飘在空中以直线行进
but if you add topspin on the ball it will drop sooner 但如果你让球上旋,球将更快下坠
because it's displacing air 因为上旋会将挤压空气
And it's dropping earlier than it would have if you didn't have topspin 使得球比起没有上旋的时候下坠得更快
And that will also allow you to hit the ball harder 这也会让你击球更有力量
without having to worry about it sailing out 而不用担心扣出界
The way you generate topspin on the ball 让球上旋的方法是
is you have to keep your hand as relaxed as possible 保持手掌尽可能的放松
but also open at the same time 同时手指微张
you want to maximize ball contact 你要使触球的面积可以最大化
by making sure that every party hit is contacting the ball 这就需要确保击球的每个部位都可以贴住球
then you want to contact the ball at the base of your middle finger 击球的点在你中指的根部
that's where the main focal point should be 这是你最重要的击球点
by the time I contact the ball it can stick on the ball and then I snap through 因此当我击球的同时可以包住球，然后压腕
Snapping through with your wrist will also help you generate topspin 压腕可以帮你让球产生旋转
When you're snapping your wrist you want to make sure 当你压腕的同时你要确保
you point as hard and as fast as possible into the ground 手腕快速准确地朝向界内
and the best way you can do that is by keeping your hand relaxed 最好的方式的是保持手掌的放松
I can't emphasize that enough 这一点是非常非常重要的
Here's a good drill you can do to 这里我讲一个比较好的练习方式
help you work on having proper ball contact with your hands 帮助你体会如何用手掌更好地触球
You take the ball with your non hitting hand 你用非扣球的手拿住球
you practice keeping an open but relaxed hand on your hitting hand 你试着保持扣球的这只手的手掌张开并且放松
and then you slap the ball to try to 然后用手掌拍球
create a higher pitched slap sound on the ball 拍球的声音越大越好
if it has a lower pitch sound or a thud like this 如果是声音是低音或者不响亮，像这样
that means your hand is too stiff or it's not open 这就意味着你的手掌僵硬或者没有张开
make sure that your hand is open and relaxed 确保手掌是张开并且放松的
Another good drill to practice your arm swing mechanics is 另一种练习摆臂的训练方法是
down bowling under the net 在网下站立扣球
That's a good way to practice your contact point 这是一种很好的方式
when you're jumping and spiked into the air 来练习掌握起跳空中击球时的击球点
same drill as the down low on tossing with two hands 用同样的方法来练习双手抛起扣球
But instead of aiming over the net I'm going to aim under the net 但不是瞄准网的上方,而是往网下打
at the other 10 foot line 瞄准对面场地的3米线
The only thing that changes from down balling and spiking in the air 站立扣球和在空中扣球唯一的不同
is my contact point 在于击球点
and I'm keeping the ball slightly low in front 我会保持球在前方略低的位置
which will help me reach on top of it 这样就能够够到球的顶部
so this is the equator 球的赤道线很重要
my goal is to contact the ball above the equator to spank it downward 我的目标是击球点在球的赤道线偏上位置，将球往下扣
And I'm also going to snap my wrists to help generate more topspin 同时压腕，使球产生更大的上旋
and to make it more of a downward trajectory when I'm spiking 和向下的轨迹
Thanks so much for watching this video 感谢观看本视频
If you have any other suggestions 如果你有任何关于
regarding volleyball athletic training or fitness 排球运动训练或健身的建议
Please leave them in the comments below 请在下方留下评论
otherwise I'll see you guys in the next video 下个视频再见！