Change search
ReferencesLink to record
Permanent link

Direct link
Effect of single and double strap backpacks on lung function
Massey University, Department of Human Resource, Centre for Ergonomics, Occupational Safety and Health.
Luleå tekniska universitet.
2004 (English)In: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Vol. 47, no 3, 318-323 p.Article in journal (Refereed) Published
Abstract [en]

Carrying heavy and moderate military loads in backpacks or as body armour compresses the chest, causing a change in lung function that is typical of a restrictive ventilatory impairment. It is not known if a lighter backpack load of only 6 kg, such as is typical of loads carried by students, will have a similar effect on lung function. There have been no studies examining whether backpacks of different strapping styles have an effect on lung function. Several designs of student backpack have recently been introduced to the market. One of the most popular is a single-strap backpack. This study examined Forced Vital Capacity (FVC), Forced Expiratory Volume in one second (FEV1), FEV1.FVC( - 1)% and Peak Expiratory Flow (PEF) in 13 participants (4 males, 9 females) wearing each of two 6 kg backpacks, one with two shoulder straps (a Double Strap Backpack (DSB)) and the other with a single strap (a Single Strap Backpack (SSB)) worn across the shoulder and chest. In comparison with the control of no pack (N), SSB significantly reduced FVC (by 3.94%, p = 0.006) but there were no significant differences in FEV1, FEV1. FVC( - 1)% and PEF. The DSB also significantly reduced FVC (by 1.97%, p = 0.034) but no significant differences were found in FEV1, FEV1. FVC( - 1)% and PEF measures. In comparison with DSB, the SSB was associated with a significantly lower FVC (by 2.05%, p = 0.049) and FEV1 (by 1.88%, p = 0.029) but there were no significant changes in FEV1. FVC( - 1)% and PEF. It is concluded that a backpack load of 6 kg could produce a mild restrictive type of ventilatory impairment in lung function. This effect was greater for a single cross-chest strap than for a more conventional double strap harness.

Place, publisher, year, edition, pages
2004. Vol. 47, no 3, 318-323 p.
Research subject
Industrial Work Environment
URN: urn:nbn:se:ltu:diva-8740DOI: 10.1080/0014013032000157878Local ID: 7456fac0-6dd2-11dd-ad27-000ea68e967bOAI: diva2:981678
Validerad; 2004; 20080819 (andbra)Available from: 2016-09-29 Created: 2016-09-29Bibliographically approved

Open Access in DiVA

fulltext(113 kB)29 downloads
File information
File name FULLTEXT01.pdfFile size 113 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text
In the same journal

Search outside of DiVA

GoogleGoogle Scholar
Total: 29 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 8 hits
ReferencesLink to record
Permanent link

Direct link