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Biomedical subjects

R Kadefors

Publications and source records attributed to R Kadefors.

At least 73 records · Page 4Linked to original sources
PubMed1978

A method for continuous electrocardiodynamic monitoring.

A new method is presented for the monitoring of cardiac time intervals, e.g. in clinical and industrial work investigation. The methods yields 'on-line' the electrocardiodynamic time profile during rest as well as effort, and has applications in health care, sports and occupational medicine. By means of analog processing of an electrocardiographic signal, ear densitogram and beat-by-beat display of the measured cardiac time intervals as amplitude-modulated pulses, an 'electrocardiodynamic time profile' is obtained. In order to estimate the accuracy and the limitations of the method, a comparison with computerized methods was performed. In an ergonomic experiment carried out by a Romanian-Swedish research team, analog and digital methods for the detection of cardiac time intervals showed good agreement.

Adolescent↗
PubMed1977

An electromyographic index for localized muscle fatigue.

A new method for objective quantification of localized muscle fatigue is described. The method is based on power spectrum analysis of myoelectric signals obtained from the fatigued muscle. It permits real-time investigations and yields statistically based criteria for the occurrence of fatigue. The findings are interpreted in terms of muscle action potential conduction velocity changes and rate of the fatigue development.

Action Potentials↗
PubMed1977

Medical engineering education in Sweden with reference to other Nordic countries.

The education of biomedical engineers in Sweden is examined against the background [corrected] of the organisation of Swedish health care. The history of the introduction of engineers into medicine is briefly recounted, leading on to a description of the academic courses open to both undergraduate and graduate students and to a discussion of the status of biomedical engineering and of biomedical engineers within the health service. Future trends are suggested. The situation in other Nordic countries is also briefly discussed.

Biomedical Engineering↗
PubMed1976

A study of painful shoulder in welders.

By means of clinical examination, soft tissue radiography and quantitative electromyography, the effect of heavy industrial work was evaluated on welders at a shipyard. The study revealed that the older workers with shoulder pain have a chronic tendinitis of the rotator cuff. The supraspinatus muscle was shown to be consistently fatigued during overhead welding. It is believed that this is an important factor in the aetiology of the shoulder pain commonly occurring in older welders.

Aged↗