A prospective study of running injuries: the Vancouver Sun
Run "In Training" clinics.
Taunton JE, Ryan MB, Clement DB, McKenzie DC, Lloyd-Smith DR, Zumbo BD.
Br J Sports Med. 2003 Jun;37(3):239-44.
Allan McGavin Sports Medicine Centre, University of British Columbia,
Vancouver, BC, Canada.
OBJECTIVES: Seventeen running training clinics were investigated to determine
the number of injuries that occur in a running programme designed to minimise
the injury rate for athletes training for a 10 km race. The relative
contributions of factors associated with injury were also reported.
METHODS: Atotal of 844 primarily recreational runners were surveyed in three trials on the
4th, 8th, and 12th week of the 13 week programme of the "In Training"
running clinics. Participants were classified as injured if they experienced at
least a grade 1 injury-that is, pain only after running. Logistic regression
modelling and odds ratio calculation were performed for each sex using the
following predictor variables: age, body mass index (BMI), previous aerobic
activity, running frequency, predominant running surface, arch height, running
shoe age, and concurrent cross training.
RESULTS: Age played an important part
in injury in women: being over 50 years old was a risk factor for overall
injury, and being less than 31 years was protective against new injury. Running
only one day a week showed a non-significant trend for injury risk in men and
was a significant risk factor in women and overall injury. A BMI of > 26
kg/m(2) was reported as protective for men. Running shoe age also significantly
contributed to the injury model. Half of the participants who reported an injury
had had a previous injury; 42% of these reported that they were not completely
rehabilitated on starting the 13 week training programme. An injury rate of
29.5% was recorded across all training clinics surveyed. The knee was the most
commonly injured site.
CONCLUSIONS: Although age, BMI, running frequency (days a
week), and running shoe age were associated with injury, these results do not
take into account an adequate measure of exposure time to injury, running
experience, or previous injury and should thus be viewed accordingly. In
addition, the reason for the discrepancy in injury rate between these 17 clinics
requires further study.
Note: Age, weight, days running per week, and running shoe age are all associated with increased chance of injury.:- Paul