ICanSTEP : Increasing Physical Activity With Text Messaging

Inclusion Criteria:

Eligible participants must be / have

1. age 18 or older,
2. a diagnosis of any hematologic or solid malignancy
3. a life expectancy of at least 12 months
4. ECOG \< /=2
5. in active cancer treatment or have completed active cancer treatment within one year of obtaining consent (with the exception of adjuvant hormonal therapy),
6. not scheduled for any major surgery during the anticipated study period,
7. able to read and understand English
8. sedentary defined as participating in 2 or less days of dedicated physical activity per week,
9. consistent daily access to a smartphone
10. a text messaging plan that includes a minimum of 150 text messages a month at no additional cost
11. capable of providing informed consent.

Exclusion Criteria:

1. Significant cardiac disease (i.e., left ventricular ejection fraction of \<50%, unstable angina, placement of cardiac stents and myocardial infarction within previous 6 months)
2. Contraindications to a 6-minute walk test as recommended by the American Thoracic Society: (a) acute myocardial infarction (3-5 days), (b) unstable angina, (c) uncontrolled arrhythmias causing symptoms or hemodynamic compromise, (d) syncope, (e) acute endocarditis, (f) acute myocarditis or pericarditis, (g) uncontrolled heart failure, (h) acute pulmonary embolus or pulmonary infarction, (i) thrombosis of lower extremities, (j) suspected dissecting aneurysm, (k) uncontrolled asthma, (l) pulmonary edema, (m) room air desaturation at rest ≤85%, (n) respiratory failure, (o) acute noncardiopulmonary disorder that may affect exercise performance or be aggravated by exercise, (p) mental impairment leading to inability to cooperate, and (q) extensive bone metastases
3. ECOG \>2
4. Participates in 3 or more days of dedicated physical activity per week
5. Known allergic reaction to nickel
6. No access to a smart phone or text messaging plan less than 150 messages per month
7. Physical or psychological contraindication to participation at the discretion of the treating physician.