In a prospective study, we determined whether preinjury and postinjury
differences existed in the mood state and self-esteem of competitive
athletes. The influence of severity of injury, gender, level of partic
ipation in sports, and type of sport on these dependent variables was
also measured. Among 238 male and 38 female athletes from hockey, bask
etball, baseball, and volleyball teams, 36 sustained 43 injuries. Sign
ificant postinjury increases were noted for depression (P<0.0001) and
anger (P = 6.0012), whereas vigor (P<0.0001) was significantly less af
ter injury. When the 36 injuries were classified, 27 were minor or mod
erate (nonparticipation in sports for only one or two weekly assessmen
ts), and 9 were severe (nonparticipation for three or more weekly asse
ssments). When a stepwise multiple regression equation was used to pre
dict the scores for postinjury depression, the only significant predic
tor was the severity of injury (F = 8.48 [1, 34]; R2 = 0.30; P = 0.006
3). Of the following physical and psychosocial variables level of part
icipation, type of sport, age, previous injury, preinjury stress, gend
er, mood state scales, and self-esteem only level of participation (P<
0.0001) and type of sport (P = 0.0004) were predictors of injury. The
significant preinjury and postinjury differences in mood state suggest
that postinjury mood disturbances reported in previous studies are li
kely attributable to the occurrence of injury, are related to the seve
rity of injury, and do not merely reflect a disturbed