| Document ID (ISN) | 21369 |
| CIS number |
74-1414 |
| Year |
1974 |
| Convention or series no. |
|
| Author(s) |
Strindberg L., Johansson L., Carlsson A., Ljungqvist E., Åstrand I. |
| Title |
Physiological load due to increased breathing resistance while wearing a filter respirator |
| Original title |
Fysiologisk belastning vid ökat andningsmotstand orsakat av andningsskydd [in Swedish] |
| Bibliographic information |
Arbete och hälsa - vetenskaplig skriftserie, 1974:5. Arbetarskyddsstyrelsen, Fack, 100 26 Stockholm 34, Sweden, 1974. 28p. Illus. 13 ref. Price: Swe-cr.8.00. |
| Abstract |
12 young and 12 older healthy men performed exercise on a bicycle ergometer with and without a respirator. Work intensities were 50, 75, 100 and 125W and the exercise periods were 5min with a respirator, with an ordinary valve (for reference), and with free breathing. Older subjects had a higher mean value for pulmonary ventilation and a lower mean carbon dioxide level than the young subjects; they also had a significantly higher negative pressure in the mask at the 2 heaviest work loads. Young subjects experienced greater respiratory resistance in breathing through a respirator than in breathing through a valve at the 2 heaviest work loads. It is therefore recommended that respirators, such as MSA Comfo, should not be used in work calling for pulmonary ventilation rates higher than 40 l/min. |
| Descriptors (primary) |
air purifying respirators; breathing resistance; physical workload |
| Descriptors (secondary) |
pulmonary ventilation; comparative study; age-linked differences; ergometric tests |
| Document type |
E - Books, reports, proceedings |
| Subject(s) |
Personal protection
|
| Broad subject area(s) |
|
| Browse category(ies) |
Respiratory protection
|
