| Summary: | 碩士 === 國立陽明大學 === 物理治療暨輔助科技學系 === 96 === Introduction and purposes: Running is one of the most popular exercises. Injuries associated with running therefore attract more attention in recent years. However, limited studies had investigated the risk factors of running injuries The purpose of this study was to investigate the distribution of lower extremity running injuries and to evaluate the possible risk factors linking to the occurence of these injuries. Subjects. A total of 1116 participants of 2005 ING Taipei International Marathon, including full marathon (42.195km), half marathon (21km), 10km, and 3km, were surveyed. Methods. We used a self-developed questionnaire to collect data on personal characteristics running and training conditions, and injury profiles. Statistical analysis. Chi-square statistics and multivariate logistic regression modeling were used to examine the possible relationship between the presence of injuries and various predictor variables. Results. After excluding subjects with incomplete data, 969 questionnaires entered the process of data analysis. Of the 969 entrants, 583 (60.2%) developed lower extremities pain or injuries. More male runners suffered from injures than female runners (p=0.021). The knee was the most commonly painful site (20.7%) while the lower leg cramp was the most popular problem during running (23.4%). Runners with running experiences 5-10 years had more knee pain (P=0.005). Running distances and duration were important risk factors: running more than 20 km/week was linked to more ankle pain and duration of running more than 60 minutes was linked to more foot pain and thigh cramp respectively. Runners of regular running had more sprain and foot pain. More entrants with ankle pain chose artificial lanes. The gradient of the running surface was an important predictor. Uphill path increased the risk of ankle pain. The runners who ran the different distance per time developed more sprain or thigh cramp. Intermittent training was associated with more lower leg pain and shank cramp. The constant running distance was a protective factor of foot pain. The runners who ran regularly and did warm-up exercise developed less shank cramp. More runners with knee pain used knee braces. Runners who wore ordinary running shoes and used soft insoles had less knee pain. Runners who used medial arch support developed more sprains. There was no significant relationship between running shoe age and injuries. Higher rate of sprain was found in runners with genu varum. Normal musculoskeletal structure was a protective factor to prevent multiple injuries. Conclusions. This study disclosed that various risk factors were linked to injuries in the lower extremity. The practitioner could use these information in developing strategies to prevent running associated injury and pain.
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