发现在2017年MLB有这一篇文章
分析用的球员是Brett Gardner
作者找了Gardner 在2017赛季的五个最快的play做分析
想看影片请点连结
1.
Apr. 21, 2017 (No slide 没扑)
30.2 feet per second, 3.67 seconds home-to-first
Gardner 想靠触击上一垒，该赛季跑最快的一次
2.
Aug. 17, 2017 (No slide 没扑)
30.3 feet per second, 3.94 seconds home-to-first
非触击状态，该赛季第二快（最快的那次因防守不足，所以不拿那次来比 inefficient def
ense made that one less than competitive）
3.
Aug. 28, 2017 (Slide 扑)
30.5 feet per second, 4.09 seconds home-to-first
Unlike the two full-run plays, there's now a noticable speed dip at the end of t
he play diagram, making it clear when the slide began. When he stopped running,
he stopped maintaining his speed.
不同于前两次全力冲刺，在这次冲刺的最后，开始扑后的速度明显下降。当他停止跑步，就
停止维持一样的速度。
4.
Aug. 2, 2017 (Slide 扑)
30.6 feet per second, 4.09 seconds home-to-first
Again, the speed decline is clear.
一样，速度明显变慢
5.
Sept 22, 2016 (Slide)
30.7 feet per second, 4.11 seconds home-to-first
The speed decline upon diving is clear, and Gardner was out.
在扑时的降速很明显，且Gardner 出局。
While five plays isn't exactly a huge sample size, these are the three fastest h
ome-to-first times on diving plays he's put up in the past year, so this isn't a
case of choosing only favorable plays. We have two of Gardner's fastest overall
times, and his three fastest sliding times.
这五个样本数虽然不多，但是两个是全力时的前两快跟三个扑下去的前三快。
Let's combine them all to show what these look like all at once. The speed Gardn
er shows for most of the play is nearly identical, and then at the end, there's
a clear speed drop when he dives. It's hard to dispute.
把这五个摆在一起看，Gardner 在冲刺时的速度几乎一样，然后在最后，当他扑的时后，速
度就降了。
If we're talking about simple running speed, that's basically true; it's difficu
lt to accelerate without your feet. As you can see in the diagrams, Gardner's sp
eed while sliding is dropping from slightly over 30 feet per second to more like
21 feet per second, and dropping rapidly as he gains friction.
如果单纯看冲刺速度，当然扑下去变慢是正常的，没有脚怎么加速。如你能从影片中看到，
Gardner 的速度从高于每秒30呎在扑下去后降到每秒21呎，因摩擦力快速下降。
But as we said, the argument to the contrary is that if done properly, the abili
ty to reach out with your hands can make up for that, and Gardner has been used
as an example in other studies of someone good at doing just that.
但是争议的点是，如果能够好好利用手的延伸，可以弥补两者之间的速差。而Gardner 是很
好的范本。
the first 80 feet or so ought to be identical no matter whether you slide or not
. Would we find a difference if we look at the final 10 feet for these selected
plays? If sliding is faster, that's where it would present itself.
不管扑不扑，前80呎的速度应该是一样的。假如我们看这五个play最后的10呎会找到差异吗
？如果扑会比较快，那就是在这段会发现。
The answer is … inconclusive, perhaps. Looking at our five plays, Gardner got t
o the 80-feet mark in as little as 3.29 seconds and as high as 3.76 seconds. Ove
r the last 10 feet, he got there in .34 and .35 seconds running, and .36, .36 an
d .37 seconds sliding.
答案是...不确定。Gardner 到达80呎的时间，最少3.29秒，最多3.76秒。最后的10呎，他
花的时间是全力跑0.34跟0.35，扑的话是0.36, 0.36, 0.37秒。
If we repeat it using 85 feet rather than 80 feet, it's about the same. Over the
last five feet, Gardner needed .18 and .18 running, and .18, .19 and .20 second
s sliding. It's not much of a difference. Or put another way, if he ran the fina
l 10 feet at 30 feet per second, he'd need an estimated .33 seconds, which is wh
at he showed in our pair of "running through" plays. If Gardner slid the final s
even feet at 21 feet per second (seven, rather than 10, assuming he can reach ou
t with his arms for the final three), that would be ... an identical .33 seconds
.
如果我们看85呎的话，会发现结果是一样的。最后的5呎，Gardner 花的时间是全力跑0.18
跟0.18秒，扑则是0.18, 0.19, 0.20秒。换种方式来看，如果最后10呎他以每秒30呎的速度
全力跑，那他需大概0.33秒，就如同我们在全力跑的两个case。如果Gardner 最后7呎用每
秒21呎的速度扑（7呎，因假设最后他的手延伸3呎），那么需要的时间也是0.33秒。
最后作者有提到扑会有个问题就是容易受伤
看这篇有数字分析，想说给大家参考
有错请见谅
https://www.mlb.com/news/statcast-looks-at-running-vs-slide-into-first-c25142015
8
※ 引述 《suzhou (☂☁☁☁☂)》 之铭言：
:
:
: 记得不是有人实验过
: 跑一垒正常冲刺的速度
: 会比用扑的速度更快
: 但为何仍然有不少选手打完往一垒跑要用扑的？
: 不知是否还有人持续做更仔细的相关实验分析？
:
: