Purpose：To clarify factors related to changes in activities of daily living (ADL) among elderly patients who were discharged to home.

Methods：The subjects were 88 persons who received in-hospital musculoskeletal rehabilitation and discharged to home. Factors related to changes in functional independence measure (FIM) score were examined.

Results：The factors related to restoring the FIM score to its values before hospitalization were frequency of physical exercise at 1 week (odds ratio [OR] ＝1.41) and 1 month (OR＝1.27) after hospital discharge, restoring the FIM score at hospital discharge to its value before hospitalization (OR＝3.96), and feeling of self-efficacy (OR＝1.16) at 3 months after hospital discharge. A receiver-operating characteristic analysis revealed that the factors related to restoring the FIM score to its value before hospitalization were frequency of physical exercise (cutoff value＝1.5) at 1 week after discharge, frequency of physical exercise (cutoff value＝1.0) at 1 month after discharge, and feeling of self-efficacy (cutoff value＝31.5) at 3 months after discharge. In addition, ≥ 2 days of physical exercise per week after hospital discharge was more likely to lead to high FIM score than ＜ 2 days of physical exercise per week.

Conclusion：Our results implied that regular physical exercise soon after hospital discharge would lead to better prognosis