Comparison of Lumbar Curves when Sitting on the Westnofa Balans® Multi-Chair, Sitting on a Conventional Chair, and Standing
Open Access
- 1 September 1986
- journal article
- research article
- Published by Oxford University Press (OUP) in PTJ: Physical Therapy & Rehabilitation Journal
- Vol. 66 (9) , 1365-1369
- https://doi.org/10.1093/ptj/66.9.1365
Abstract
The purpose of this study was to determine whether the Balans® Multi-Chair (BMC) approximates the amount of standing lumbar curve better than a standard conventional chair (SCC) in seated subjects writing at a desk. The length of the curve from L1 to S2 was measured with a flexible ruler in 44 healthy subjects who were standing and sitting on both an SCC and a BMC. A one-way analysis of variance for repeated measures and the Student-Newman-Keuls test were used to examine the differences in the curves created in the three positions. The frequency of subjects sitting in lumbar flexion was compared using a chi-square test with those not in flexion. Lumbar curves measured in the three positions were significantly different (p < .01). The BMC approximated the standing lumbar curve in seated subjects writing at a desk to a greater degree than the SCC. In addition, the BMC produced lumbar flexion less frequently (χ2 = 4.33, p < .05) than did the SCC. These data suggest that the BMC may be an appropriate adjunct in client care when minimal lumbar flexion or lumbar extension is indicated.Keywords
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