Back extensor training increases muscle strength in postmenopausal women with osteoporosis, kyphosis and vertebral fractures
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
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.
Back extensor muscle training, kyphosis, postmenopausal osteoporosis, vertebral fracture
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-75576DOI: 10.3109/14038196.2011.581696OAI: oai:DiVA.org:liu-75576DiVA: diva2:508429