Breath control during manual free-style lifting of a maximally tolerated load

Clear evidence links voluntary breath control, intra-abdominal pressure and lumbar stability. However, little is known regarding optimal breath control during manual materials handling. No studies have examined natural breath control while lifting a maximal load. Fourteen healthy subjects lifted a l...

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Bibliographic Details
Published in:Ergonomics 2010-03, Vol.53 (3), p.385-392
Main Authors: Lamberg, Eric M., Hagins, Marshall
Format: Article
Language:English
Subjects:
Abdomen - physiology
Applied physiology
Biological and medical sciences
breathing
Ergonomics
Ergonomics. Work place. Occupational physiology
Female
Human factors research
Human performance
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
intra-abdominal pressure
lifting
Load
lumbar stability
Lumbar Vertebrae
Male
Medical sciences
Resistance Training - methods
Respiration
Respiratory Mechanics - physiology
Space life sciences
Surveys and Questionnaires
Weight Lifting - physiology
Young Adult
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Summary:Clear evidence links voluntary breath control, intra-abdominal pressure and lumbar stability. However, little is known regarding optimal breath control during manual materials handling. No studies have examined natural breath control while lifting a maximal load. Fourteen healthy subjects lifted a loaded crate from the floor to a table while respiratory flow data were collected. The loads lifted began at 10% of body weight and increased up to 50% (if tolerated) by 5% increments. Data from the minimum, moderate and maximum loads were analysed. Uniform and consistent breath holding during lifting of a maximally tolerated load did not occur. Across all three loads, frequency of inspiration was highest immediately prior to lift-off and significantly higher inspired volume occurred at lift-off of the load compared with preparation for lifting. Holding the breath does not appear to be related to lifting of a maximally tolerated load from floor to table. Statement of Relevance: The findings demonstrate that consistent patterns of naturally occurring breath control during lifting of a maximal load can be identified and do not include uniform breath holding. The findings may assist in creating models for optimal breath control, which will minimise risk of injury during manual material handling tasks.
ISSN:0014-0139
1366-5847
DOI:10.1080/00140130903420228