TY - RPRT TI - Does head extension and flexion increase postural instability in elderly subjects when visual information is kept constant? AU - John G Buckley AU - Vijay Anand AU - Andy Scally AU - David B Elliott PY - 2005 DO - 10.1016/j.gaitpost.2003.11.005 UR - https://pubmed.ncbi.nlm.nih.gov/15536034/ ID - 15536034 ER -