2.8.2. Physical Activity Measures

The PA metrics used in this pilot study included mean steps per day and mean minutes of moderate to vigorous PA (MVPA) per day. These measurements were obtained using an ActiGraph GT9X Link accelerometer around the waist for 7 days at each time point. ActiGraph is a validated research-grade 3-axis accelerometer. The Troiano algorithm within the ActiLife software was used to estimate wear time and activity. A cut point of 10 h was used to deemed as a valid wear day. Additionally, we used Keadle et al.'s accelerometer processing data for this phase II pilot study [61]. The Fitbit and Xiamoi Mi Band 3 step counts were used as self-monitoring tools only. They were not used in the PA outcome assessment.

#### 2.8.3. Other Patient Reported Measures

Demographics, such as age, assigned sex at birth, race/ethnicity identity, and cancer diagnosis were self-reported using paper-based questionnaires.
