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. 2022 Oct;29(5):74-82.
doi: 10.21315/mjms2022.29.5.8. Epub 2022 Oct 28.

Knee Extensor Muscle Strength to Measure the Ability of Five Times Sit to Stand Independently in Patients with Incomplete Spinal Cord Injury

Lugkana Mato  1   2 , Nanniphada Chankavee  1   2 , Sugalya Amatachaya  1   2 , Thiwabhorn Thaweewannakij  1   2
Affiliations

Knee Extensor Muscle Strength to Measure the Ability of Five Times Sit to Stand Independently in Patients with Incomplete Spinal Cord Injury

Lugkana Mato et al. Malays J Med Sci. 2022 Oct.

Abstract

Background: Patients with incomplete spinal cord injury (iSCI) and lower extremity muscle weakness often fall while standing up from a chair. The sit-to-stand (STS) task primarily uses the strength of the knee extensor muscles. The five times sit-to-stand test (FTSST) is often applied to determine lower limb function and the results are related to lower extremity muscle strength. This study explored the cut-off point for knee extensor muscle strength in patients with iSCI to independently determine their FTSST results and the correlation between knee extensor muscle strength and FTSST results.

Methods: Forty-four participants were assessed for knee extensor muscle strength using a hand-held dynamometer (HHD) and the FTSST.

Results: The data indicated that knee extensor muscle strength ≥ 53.06 Newton was the best independent predictor of the FTSST results (sensitivity 72.7%, specificity 72.7%). Moreover, knee extensor muscle strength was significant and correlated with the FTSST results (r = -0.45, P = 0.035).

Conclusion: The findings offer a cut-off point for the knee extensor muscle strength measured while standing up from a chair that may help medical professionals set rehabilitation goals for patients with iSCI.

Keywords: falls; muscle strength dynamometer; reference value; rehabilitation; spinal cord injury.

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Conflict of interest statement

Conflict of Interest None.

Figures

Figure 1
Figure 1
The receiver-operating characteristic curves of sensitivity and specificity of knee extensor muscle strength for determining the ability of FTSST independently without hands support
See this image and copyright information in PMC

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