It depends on the case; there is no single guideline.
Effect by goal · level of evidence
Bone density in postmenopausal women
improvesModeratemeta-analysis (AAA)
Meta-analysis of trials: whole-body vibration improves bone density in postmenopausal women, with better evidence for high frequency, low magnitude and high cumulative dose. A low-impact option for bone.
Bone density in postmenopausal women — improves (Moderate, meta-analysis). Meta-analysis of trials: whole-body vibration improves bone density in postmenopausal women, with better evidence for high frequency, low magnitude, and high cumulative dose. A low-impact option for bone. 36282343
Information, not medical advice. Prescription drugs require a doctor.
Information, not medical advice. Scientific evidence reflects the quality of the studies.