Dosing Physical Activity Among Older Cancer Survivors Who Experience Chronic Pain: a Micro-randomized Trial

BEHAVIORAL

Physical Activity Promotion Intervention

This physical activity promotion intervention is a micro-randomized trial designed to determine the most effective time to send a message to promote physical activity among cancer survivors who experience chronic pain symptoms.

ActiGraph accelerometer measured physical activity behaviors (sedentary, light, moderate, vigorous intensity).

Time frame: 4 weeks

Physical activity will be measured using an ActiGraph accelerometer. Data will be aggregated into physical activity estimations (sedentary, light, moderate, vigorous, steps, etc.) using standard methods. Outcome of interest will be probability older cancer survivors are physically active in the 30 minutes following the receipt of a messaging prompt to promote physical activity.

11-point box scale to assess pain on a scale of 0 (no pain) to 10 (worst possible pain).

Time frame: 4 weeks

Pain state will be assessed by response to the pain rating measured by the 11-Point Box Scale in the study app. Participants will receive a smart phone prompt to rate their pain 4 times per day. Outcome of interest will be probability older cancer survivors experience a pain episode in the 24 hours following the receipt of a messaging prompt to increase physical activity.

What is a clinical trial?

A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.

Is it safe to participate?

Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.

Will I be compensated?

Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.

Will I receive a placebo instead of treatment?

When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.

Can I leave a trial if I change my mind?

Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.

How long does a clinical trial last?

Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.