Technology Interventions to Improve Outcomes After Knee Replacement

Reducing Sedentary Time Using an Innovative mHealth Intervention Among Total Knee Replacement Patients

The purpose of this study is to examine the effects of two technology interventions on health outcomes (e.g., physical activity, sedentary behavior, physical function, pain) after knee replacement at 2 and 5 months .

Two 8 week technology interventions will be examined and consist of the use of an app and/or website and regular calls. Assessments to examine outcomes will be completed at baseline, as well as at 2 and 5 months.

Inclusion Criteria:

• Be 40-79 years of age
• Had unilateral knee replacement within last 12 months
• Have an Android or iOS smartphone that is accessible and near them the majority of the day
• Be willing to download the study applications on their smartphone
• Spend at least 7 hours/day sitting
• Be English speaking

Exclusion Criteria:

• Have any contraindications to activity
• Have a mobility limiting comorbidity
• Have a scheduled surgery within the next 6 months
• Do not have ≥4 days of valid accelerometer (>=10 hours) wear at baseline.