title: A solid-state ambulatory physical activity monitor and its application to measuring daily activity of the elderly.
abstract: An ambulatory acceleration monitor was developed and used to evaluate physical activity in the elderly. The ECG and accelerations at the wrist, waist, and ankle were recorded, and the heart rate and frequency and amplitude of accelerations per unit time were evaluated in both working and retired elderly women performing normal daily activities. The heart rate closely paralleled wrist acceleration. The behaviour patterns of the subjects could be differentiated by time interval signals and histogram distributions. This system appears to be an effective method of understanding and describing the characteristic activities of the elderly in a quantitative and objective fashion.
authors.affiliation: Institute for Medical and Dental Engineering, Tokyo Medical and Dental University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Tamura
authors.forename: T
authors.initials: T
authors.lastname: Fujimoto
authors.forename: H
authors.initials: H
authors.lastname: Sakaki
authors.forename: Y
authors.initials: Y
authors.lastname: Higashi
authors.forename: T
authors.initials: T
authors.lastname: Yoshida
authors.forename: T
authors.initials: T
authors.lastname: Togawa
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D004562:Electrocardiography; D004867:Equipment Design; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D009043:Motor Activity; D012016:Reference Values; D012984:Software; D016683:Supine Position; D016138:Walking / Q000502:physiology