dc.contributor.author | Jørgensen, Arve | |
dc.contributor.author | Ekdahl, Anna Madeleine | |
dc.contributor.author | Havnes, Marianne Bjordal | |
dc.contributor.author | Eftedal, Ingrid | |
dc.date.accessioned | 2017-06-06T07:33:17Z | |
dc.date.available | 2017-06-06T07:33:17Z | |
dc.date.created | 2014-11-23T10:37:14Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | European Journal of Applied Physiology. 2014, 115 (3), 597-605. | nb_NO |
dc.identifier.issn | 1439-6319 | |
dc.identifier.uri | http://hdl.handle.net/11250/2444371 | |
dc.description.abstract | PURPOSE: Decompression sickness (DCS) caused by vascular bubble formation is a major risk when diving. Prior studies have shown that physical exercise has a significant impact in both reducing and increasing bubble formation. There is limited knowledge about the mechanisms, but there are indications that exercise-induced muscle injury prior to diving may cause increased bubble formation. The purpose of this study was to investigate the role of exercise-induced muscle injury as a possible mechanism of bubble formation during diving. METHODS: Muscle injury was induced by exposing female Sprague-Dawley rats (n = 30) to a single bout of eccentric exercise, 100 min intermittent, downhill (-16°) treadmill running. Forty-eight hours later, the animals were exposed to a 50-min simulated saturation dive (709 kPa) in a pressure chamber, when the degree of muscle injury and inflammation would be the most pronounced. Bubble formation after the dive was observed by ultrasonic imaging for 4 h. RESULTS: No difference in bubble loads was found between the groups at any time despite evident muscle injury. Maximum bubble loads (bubbles cm-2 heart cycle-1) were not different, exercise: 1.6 ± 3.5 SD vs control: 2.2 ± 4.1 SD, P = 0.90, n = 15 in each group. CONCLUSIONS: Eccentric exercise performed 48 h prior to diving causes skeletal muscle injury but does not increase the amount of vascular bubbles in rats. The prevailing recommendation is that physical activity prior to diving is a risk factor of DCS. However, present and previous studies implicate that pre-dive physical activity does not increase the DCS risk. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Springer Verlag | nb_NO |
dc.title | Eccentric exercise 48 h prior to simulated diving has no effect on vascular bubble formation in rats | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.source.pagenumber | 597-605 | nb_NO |
dc.source.volume | 115 | nb_NO |
dc.source.journal | European Journal of Applied Physiology | nb_NO |
dc.source.issue | 3 | nb_NO |
dc.identifier.doi | 10.1007/s00421-014-3046-z | |
dc.identifier.cristin | 1175826 | |
dc.relation.project | Norges forskningsråd: 220546 | nb_NO |
dc.description.localcode | © Springer-Verlag Berlin Heidelberg 2014. This is the authors' accepted and refereed manuscript to the article | nb_NO |
cristin.unitcode | 194,65,25,0 | |
cristin.unitname | Institutt for sirkulasjon og bildediagnostikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |