When I got my PICC line I was told no repetative motion with the arm where the PICC line is located, and they also discouraged anything too vigorous (such as jogging, etc.). I would think a recombant exercycle would be fine as long as you don't become drenched in sweat at/near the PICC line site.
If you do sweat significantly under the dressing (i.e., you can see the water droplets collected under the dressing), then it would be good to have the dressing changed as soon as you are able to do so in order to prevent infection at the site.
I hope this helps...take care,
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, Pancytopenia, chronic malabsorption/malnutrition, etc.; G-Tube; Currently TPN-dependent.
Meds: Zofran, Pulmicort, Heparin (to flush PICC line), IV Ceftazidime (for Pleural Effusion), Colloidal Silver (used topically).