Validity and test–retest reliability of a novel simple back extensor muscle strength test
| Autor: | Amy T Harding, Benjamin Kurt Weeks, Sean A Horan, Andrew Little, Steven L Watson, Belinda Ruth Beck |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | SAGE Open Medicine, Vol 5 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2050-3121 20503121 |
| DOI: | 10.1177/2050312116688842 |
| Popis: | Objectives: To develop and determine convergent validity and reliability of a simple and inexpensive clinical test to quantify back extensor muscle strength. Methods: Two testing sessions were conducted, 7 days apart. Each session involved three trials of standing maximal isometric back extensor muscle strength using both the novel test and isokinetic dynamometry. Lumbar spine bone mineral density was examined by dual-energy X-ray absorptiometry. Validation was examined with Pearson correlations ( r ). Test–retest reliability was examined with intraclass correlation coefficients and limits of agreement. Pearson correlations and intraclass correlation coefficients are presented with corresponding 95% confidence intervals. Linear regression was used to examine the ability of peak back extensor muscle strength to predict indices of lumbar spine bone mineral density and strength. Results: A total of 52 healthy adults (26 men, 26 women) aged 46.4 ± 20.4 years were recruited from the community. A strong positive relationship was observed between peak back extensor strength from hand-held and isokinetic dynamometry ( r = 0.824, p |
| Databáze: | Directory of Open Access Journals |
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