All injuries occurring over a 7-week period at a local indoor soccer a
rena were documented for analysis of incidence rates. All injury rates
were calculated per 100 player-hours. The overall injury rates for ma
le and female players were similar, 5.04 and 5.03, respectively. The l
owest injury rate was found among the 19- to 24-year-old athletes and
the highest injury rate was found among the oldest age group (greater-
than-or-equal-to 25 years). Collision with another player was the most
common activity at the time of injury, accounting for 31% of all inju
ries. The most common injury types were sprains and muscle contusions,
both occurring at a rate of 1.1 injuries per 100 player-hours. Male p
layers suffered a significantly higher rate of ankle ligament injuries
compared with female players (1.24 versus 0.43, P < 0.05), while fema
le players suffered a significantly higher rate of knee ligament injur
ies (0.87 versus 0.29, P < 0.01). Goalkeepers had injury rates (4.2) s
imilar to players in nongoalkeeper positions (4.5).