Biomaterial Database

A portable heart rate distribution recorder for studying daily physical activity. 1977

W H Saris, and P Snel, and R A Binkhorst

This paper provides a brief description of a new 8-register heartbeat integrator for recording the heart rate over a long period (24-h or more) in order to assess daily physical activity in children and adults. This compact, rugged device records the cardiac beat to beat interval in seven registers, ranging from 40--225 H4/min. An eight register, the so called "quality level"; (range 225--300 Hr/min) is added to count all non-physiological pulses resulting from muscle noise, etc. To test for validity this system was evaluated simultaneously against two established systems; a manual acoustic monitoring system and a heart rate recording system. Comparison of the results demonstrated good agreement. Integrator influences on the normal daily activity behaviour of the children (age 5 yrs.) was checked with the pedometer method. It was found that wearing of the heartbeat integrator did not appreciably influenced the normal behaviour of the children.

UI	MeSH Term	Description	Entries
D008904	Miniaturization	The design or construction of objects greatly reduced in scale.	Miniaturisation,Miniaturisations,Miniaturizations
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D004566	Electrodes	Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.	Anode,Anode Materials,Cathode,Cathode Materials,Anode Material,Anodes,Cathode Material,Cathodes,Electrode,Material, Anode,Material, Cathode
D004734	Energy Metabolism	The chemical reactions involved in the production and utilization of various forms of energy in cells.	Bioenergetics,Energy Expenditure,Bioenergetic,Energy Expenditures,Energy Metabolisms,Expenditure, Energy,Expenditures, Energy,Metabolism, Energy,Metabolisms, Energy
D005082	Physical Exertion	Expenditure of energy during PHYSICAL ACTIVITY. Intensity of exertion may be measured by rate of OXYGEN CONSUMPTION; HEAT produced, or HEART RATE. Perceived exertion, a psychological measure of exertion, is included.	Physical Effort,Effort, Physical,Efforts, Physical,Exertion, Physical,Exertions, Physical,Physical Efforts,Physical Exertions
D006339	Heart Rate	The number of times the HEART VENTRICLES contract per unit of time, usually per minute.	Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001698	Biomedical Engineering	Application of principles and practices of engineering science to biomedical research and health care.	Clinical Engineering,Engineering, Clinical,Engineering, Biomedical
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor