RecruitingProcedureLow-Intensity Mechanical Stimulation for Hematologic Malignancy PatientsThis clinical trial tests the effect of low-intensity mechanical stimulation (LIMS) vibration therapy in patients with hematologic malignancies. Patients with hematologic malignancies often undergo a blood and/or bone marrow transplant (hematopoietic cell transplantation \[HCT\]) or cellular therapy. The LIMS board delivers vibrations through the bones that may stimulate bone growth and may also increase muscle activity and strength and may also increase T-cell activation in patients planning to undergo cellular therapy. LIMS vibration therapy may stop or reverse BMD loss and/or improve the development of T-cells in the body in patients with hematologic malignancies who are undergoing or may plan to undergo HCT or cellular therapies.