The relationship between physical capacity and fear avoidance beliefs in patients with chronic low back pain.

[Purpose] The aim of this study was to investigate the relationship between physical capacity and fear avoidance beliefs in patients with chronic low back pain. [Subjects and Methods] This cross sectional study included 131 male university students with chronic low back pain. All the patients completed a fear avoidance beliefs questionnaire. Each participant performed a physical capacity test, which included hand grip force, leg strength, abdominal muscle endurance, flexibility, and cardiopulmonary endurance testing. [Results] Negative correlation was observed between physical capacity (leg strength, abdominal muscle endurance) and fear avoidance beliefs regarding work. Physical capacity (hand grip force, leg strength, cardiopulmonary endurance) showed a negative correlation with fear avoidance beliefs about physical activity. Abdominal muscle endurance and cardiopulmonary endurance were predictors of fear avoidance beliefs. [Conclusion] Physical capacity showed a negative correlation with fear avoidance beliefs in patients with chronic low back pain. The results of this study suggest that physical capacity is an important factor for predicting fear avoidance beliefs in patients with chronic low back pain.