Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| The Ball Speed, Mean ± SD | The Ball Momentum, Mean ± SD | The Head Speed, Mean ± SD | The Head Momentum, Mean ± SD | |
|---|---|---|---|---|
| Before heading | 17.99 ± 2.36 | 5.40 ± 0.71 | 3.61 ± 1.51 | 7.4 ± 4.97 |
| After heading | 15.93 ± 3.14 | 4.59 ± 1.35 | 1.59 ± 0.82 | 5.95 ± 3.03 |
