title: Breath holding effects on ULF displacement ballistocardiography.
mesh_terms: D000328:Adult; D001450:Ballistocardiography / Q000379:methods*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008168:Lung / Q000502:physiology; D012119:Respiration / Q000502:physiology*