Background: The association of quantitative gait characteristics, such as gait variability with musculoskeletal pain is poorly understood. We aimed to examine whether gait speed and gait variability are associated with musculoskeletal pain assessed by the severity and the number of sites in community-dwelling elderly individuals.
Methods: A total of 176 elderly individuals participated in this study. The wireless motion-recording sensor units were attached to the lower trunk and heel during gait, and an autocorrelation coefficient was calculated in three directions as parameters of gait variability of trunk movement. Musculoskeletal pain was assessed in two aspects: severity and the number of sites.
Results: Moderate/severe pain intensity was significantly associated with slow gait speed and low AC in a mediolateral direction (P=0.024 and 0.026, respectively). Participants with musculoskeletal pain in multiple sites had significantly lower autocorrelation coefficient in mediolateral direction than did those without pain (P=0.003).
Conclusions: Presence of moderate/severe pain intensity in at least one site or any-intensity pain in multiple sites is associated with slower gait speed and higher gait variability of trunk movement in well-functioning elderly individuals living in the community. Additional studies are necessary to elucidate the causal relationships between musculoskeletal pain and gait.
Keywords: Community-dwelling elderly; Pain; Trunk movement.
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