Characteristics of Early Postoperative Sedentary Time in Patients with Hip Fractures.

Objectives: This study aimed to investigate the sedentary time of patients with hip fractures, including those with cognitive decline, in the early postoperative period.

Methods: Participants were patients with hip fractures treated at our hospital. A triaxial accelerometer was attached to the contralateral hip, and activity was recorded for three postoperative days (4320 min).

Results: Thirty patients (mean age: 86.5 years; female, n=23) were included in the analysis. The mean activity times were: sedentary time, 1364.0 ± 59.9 min/day (mean ± standard deviation); light-intensity physical activity time, 71.9 ± 57.8 min/day; and moderate-to-vigorous-intensity physical activity time, 4.1 ± 3.2 min/day. Sedentary time was linked to the scores on the Mini-Mental State Examination-Japan.

Conclusions: : Early postoperative patients with hip fractures have long sedentary times and less time for moderate-to-vigorous-intensity physical activity. Patients with hip fractures with cognitive decline have significantly longer sedentary time than those without cognitive decline.