Paraspinal strength and electromyographic fatigue in patients with sub-acute back pain and controls: Reliability, clinical applicability and between-group differences

doi:10.5312/wjo.v12.i11.816

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Nov 18, 2021 (publication date) through May 21, 2024

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World Journal of Orthopedics

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2218-5836

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Orthop. Nov 18, 2021; 12(11): 816-832
Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.816

Table 6 Adjusted between-group median frequency-slope differences in the isometric endurance test at 60% of maximum voluntary isometric contraction

		Healthy (n = 26)		LBP (n = 66)		Mean difference	P value
Parameter		Mean	SE	Mean	SE	Mean difference	P value
MF slopes (raw, Hz/s)
L2/3	-0.25		0.03	-0.14	0.02	0.12	0.002^b
L4/5	-0.44		0.05	-0.26	0.02	0.18	0.002^b
MF slopes (normalised, %/min)
L2/3	-22.4		2.9	-13.0	1.4	9.4	0.009^b
L4/5	-29.4		2.5	-18.4	1.2	11.0	0.000^b

^bP < 0.01.

Hz: Hertz; LBP: Low back pain; MF: Median frequency.

Citation: Koumantakis GA, Oldham JA. Paraspinal strength and electromyographic fatigue in patients with sub-acute back pain and controls: Reliability, clinical applicability and between-group differences. World J Orthop 2021; 12(11): 816-832
URL: https://www.wjgnet.com/2218-5836/full/v12/i11/816.htm
DOI: https://dx.doi.org/10.5312/wjo.v12.i11.816