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Back extensor training increases muscle strength in postmenopausal women with osteoporosis, kyphosis and vertebral fractures
Karolinska University Hospital.
Stockholm shool of economics.
Linköping University, Department of Medical and Health Sciences, Division of Preventive and Social Medicine and Public Health Science. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Local Health Care Services in the West of Östergötland, Rehabilitation in West County.
Karolinska University Hospital.
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2011 (English)In: Advances in Physiotherapy, ISSN 1403-8196, E-ISSN 1651-1948, Vol. 13, no 3, 110-117 p.Article in journal (Refereed) Published
Abstract [en]

We determined the efficacy of a back muscle extensor strengthening program on the back muscle extensor strength, kyphosis, height and thoracic expansion in women with at least one vertebral fracture, kyphosis and osteoporosis. Thirty-six patients were included and randomized to a control or a training group. The training focused on back muscle extensor strengthening program for 1 h, twice a week for 4 months and was performed by a physiotherapist. The main outcome measure was the back muscle extensor strength. In an intention-to-treat analysis no significant effects on back muscle strength in the training group vs. controls could be seen (p = 0.74). In a per-protocol analysis (n = 28), the training group increased back muscle strength from 290 ± 87 to 331 ± 89 N while the control group showed no improvement. After adjusting for the strength at baseline, a significant effect of training could be demonstrated (p = 0.029). When comparing the heights between the groups a significant group × time interaction was observed (p = 0.012) where the training women increased their mean height with 0.3 cm (p = 0.101) and controls decreased 0.44 cm (p = 0.045). The training group improved their thoracic expansion compared with baseline (p = 0.03). No effect of training on kyphosis was seen. In conclusion, a 4-months back extensor training program can improve back strength and seems to maintain height and thoracic expansion.

Place, publisher, year, edition, pages
Informa Healthcare, 2011. Vol. 13, no 3, 110-117 p.
Keyword [en]
Back extensor muscle training, kyphosis, postmenopausal osteoporosis, vertebral fracture
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-75576DOI: 10.3109/14038196.2011.581696OAI: diva2:508429
Available from: 2012-03-08 Created: 2012-03-08 Last updated: 2012-03-14

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Grahn Kronhed, Ann-Charlotte
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Division of Preventive and Social Medicine and Public Health ScienceFaculty of Health SciencesRehabilitation in West County
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