NEAT!2 Sedentary Behavior Reduction for Individuals With Past or Present Knee Symptoms, Injuries, or Surgeries

Not Applicable

Terminated

Conditions: Knee Injuries
Knee Osteoarthritis
Knee Pain Chronic
Sedentary Lifestyle

Interventions: Behavioral: NEAT!2+Calls
Behavioral: NEAT!2
Behavioral: Delayed NEAT!2

Brief Summary: This study will evaluate the effectiveness of an mHealth sedentary reduction program over a 6-month period of time in adults with past or present knee symptoms, injuries, or surgeries.

Detailed Description: Sedentary behavior, in excess, is associated with numerous health consequences including poor physical function. Older adults with symptomatic knee pain spend the majority of their waking hours engaging in sedentary behaviors. To reduce the risk of disability, improve quality of life, and prevent deterioration in physical function, it is imperative the investigators develop ways to reduce sedentary time. Smartphone ownership among older adults is increasing and may provide a scalable opportunity to disseminate a sedentary reduction intervention. Therefore, this study aims to evaluate and compare changes in sedentary behavior and physical function between an mHealth sedentary reduction, mHealth intervention plus coaching, and delayed mHealth group. Sedentary behavior and physical function will be assessed at baseline, 1 month, 3 months, and 6 months after randomization.

Recruitment & Eligibility

Inclusion Criteria

Be at least 40 years of age
Own an Android or Apple smartphone
Have their smartphone near them (in their pocket, in their hand, or within 10 feet of them) for >50% of their waking day
Be willing to download the study application and be compatible on their smartphone
Spend at least 7 hours/day sitting
Have at least 4 days of valid accelerometer data at baseline
Have knee pain (at least one knee with pain, aching, or stiffness on most days for one month of the last 12 months), knee injury, or knee replacement within the last 5 years
Read, speak, and understand English

Exclusion Criteria

Arm && Interventions

Group	Intervention	Description
NEAT!2+Calls	NEAT!2+Calls	Participants will be asked to use the NEAT!2 app for 3 months after randomization. In addition, participants will receive bi-weekly coaching calls over 3 months. App use between 4-6 months is optional.
NEAT!2	NEAT!2	Participants will be asked to use the NEAT!2 app for 3 months after randomization. App use between 4-6 months is optional.
Delayed NEAT!2	Delayed NEAT!2	Participants will receive the NEAT!2 app to use between 3 and 6 months.

Primary Outcome Measures

Name	Time	Method
Change in Sedentary Behavior at 1 Month	Baseline to 1 month	Daily sedentary behavior objectively measured by activpal
Change in Sedentary Behavior at 3 Months	Baseline to 3 months	Daily sedentary behavior objectively measured by activpal

Secondary Outcome Measures

Name	Time	Method
Change in Timed Up & Go at 3 Months	Baseline to 3 months	Physical function assessed by Timed Up \& Go (seconds)
Change in 6 Minute Walk at 3 Months	Baseline to 3 months	Physical function assessed by 6 minute walk (total feet)
Change in Chair Stands at 3 Months	Baseline to 3 months	Physical function assessed by Chair Stand Test (# stands in 30 seconds)
Change in Timed Up & Go at 1 Month	Baseline to 1 month	Physical function assessed by Timed Up \& Go (seconds)
Change in Chair Stands at 1 Month	Baseline to 1 month	Physical function assessed by Chair Stand Test (# stands in 30 seconds)
Change in 6 Minute Walk at 1 Month	Baseline to 1 month	Physical function assessed by 6 minute walk (total feet)