Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators.
Ten subjects underwent treadmill exercise at 5.6 km/h over one hour while wearing each of three identical appearing, cup-shaped, prototype filtering facepiece respirators that differed only in their filter resistances (3 mm, 6 mm, and 9 mm H2O pressure drop). There were no statistically significant...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3873997?pdf=render |
| _version_ | 1818562218778689536 |
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| author | Raymond J Roberge Jung-Hyun Kim Jeffrey B Powell Ronald E Shaffer Caroline M Ylitalo John M Sebastian |
| author_facet | Raymond J Roberge Jung-Hyun Kim Jeffrey B Powell Ronald E Shaffer Caroline M Ylitalo John M Sebastian |
| author_sort | Raymond J Roberge |
| collection | DOAJ |
| description | Ten subjects underwent treadmill exercise at 5.6 km/h over one hour while wearing each of three identical appearing, cup-shaped, prototype filtering facepiece respirators that differed only in their filter resistances (3 mm, 6 mm, and 9 mm H2O pressure drop). There were no statistically significant differences between filtering facepiece respirators with respect to impact on physiological parameters (i.e., heart rate, respiratory rate, oxygen saturation, transcutaneous carbon dioxide levels, tympanic membrane temperature), pulmonary function variables (i.e., tidal volume, respiratory rate, volume of carbon dioxide production, oxygen consumption, or ventilation), and subjective ratings (i.e., exertion, thermal comfort, inspiratory effort, expiratory effort and overall breathing comfort). The nominal filter resistances of the prototype filtering facepiece respirators correspond to airflow resistances ranging from 2.1 - 6.6 mm H2O/L/s which are less than, or minimally equivalent to, previously reported values for the normal threshold for detection of inspiratory breathing resistance (6 - 7.6 mm H2O/L/sec). Therefore, filtering facepiece respirators with filter resistances at, or below, this level may not impact the wearer differently physiologically or subjectively from those with filter resistances only slightly above this threshold at low-moderate work rates over one hour. |
| first_indexed | 2024-12-14T01:00:49Z |
| format | Article |
| id | doaj.art-3322c3415a8641e895aca3c02db9b055 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-14T01:00:49Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-3322c3415a8641e895aca3c02db9b0552022-12-21T23:23:16ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-01812e8490110.1371/journal.pone.0084901Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators.Raymond J RobergeJung-Hyun KimJeffrey B PowellRonald E ShafferCaroline M YlitaloJohn M SebastianTen subjects underwent treadmill exercise at 5.6 km/h over one hour while wearing each of three identical appearing, cup-shaped, prototype filtering facepiece respirators that differed only in their filter resistances (3 mm, 6 mm, and 9 mm H2O pressure drop). There were no statistically significant differences between filtering facepiece respirators with respect to impact on physiological parameters (i.e., heart rate, respiratory rate, oxygen saturation, transcutaneous carbon dioxide levels, tympanic membrane temperature), pulmonary function variables (i.e., tidal volume, respiratory rate, volume of carbon dioxide production, oxygen consumption, or ventilation), and subjective ratings (i.e., exertion, thermal comfort, inspiratory effort, expiratory effort and overall breathing comfort). The nominal filter resistances of the prototype filtering facepiece respirators correspond to airflow resistances ranging from 2.1 - 6.6 mm H2O/L/s which are less than, or minimally equivalent to, previously reported values for the normal threshold for detection of inspiratory breathing resistance (6 - 7.6 mm H2O/L/sec). Therefore, filtering facepiece respirators with filter resistances at, or below, this level may not impact the wearer differently physiologically or subjectively from those with filter resistances only slightly above this threshold at low-moderate work rates over one hour.http://europepmc.org/articles/PMC3873997?pdf=render |
| spellingShingle | Raymond J Roberge Jung-Hyun Kim Jeffrey B Powell Ronald E Shaffer Caroline M Ylitalo John M Sebastian Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators. PLoS ONE |
| title | Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators. |
| title_full | Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators. |
| title_fullStr | Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators. |
| title_full_unstemmed | Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators. |
| title_short | Impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators. |
| title_sort | impact of low filter resistances on subjective and physiological responses to filtering facepiece respirators |
| url | http://europepmc.org/articles/PMC3873997?pdf=render |
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