Реферат: Injuries In Sports Essay Research Paper Relationship

or other drugs.

Forty-six percent (n=179) of the sample reported no prior history of

concussion, 34% (n=129) reported experiencing 1 concussion of any

grade, and 20% (n=79) reported a history of 2 or more sustained

concussions (range, 2-10) of any grade. A significant relationship was

found between total years participating in football and total number of

concussions sustained (r=0.15; P.02). Quarterbacks (17 of 25) and

tight ends (15 of 23) had the the highest rates of prior concussion

(68% and 65%, respectively). Running backs-fullbacks (11 of 33) and

kickers-punters experienced the lowest rates of prior concussion

(33% and 46%, respectively).

The prevalence of LD within the total sample of 393 athletes was

13.5% (n=53). Of the players with no history of concussion (n=179),

10.6% (n=19) had a diagnosed LD; of those who had experienced 1

prior concussion (n=129), 14.7% (n=19) had diagnosed LD, and of

those who had experienced multiple concussions (n=79), 19.0%

(n=15) had a diagnosed LD. Although these data suggest a possible

trend between history of LD and history of multiple concussions, this

relationship was not statistically significant (2=3.74; P=.15).

Previous Concussions, LD History, and Baseline

Neuropsychological Performance

The MANOVA yielded significant main effects for both LD (F=4.57;

P*.001) and concussion history (F=1.91; P=.009) on

neuropsychological test results, which indicated that both of these

variables were significantly related to overall neuropsychological

performance. The interaction of LD and concussion history was not

significant (F=1.17; P=.28). A follow-up series of univariate F tests

was completed to identify the specific neuropsychological measures

that accounted for the significant MANOVA. Tests for the LD main