Skin Bioimpedance Analysis to Determine Cellular Integrity by Phase Angle in Women with Fibromyalgia: A Cross-Sectional Study.
Author: Vicente Campos, Davinia; Sánchez Jorge, Sandra; Martí, Luis; Buffet, Jorge; Mendoza Laiz, Nuria; Rodriguez-Sanz, David; Becerro-de-Bengoa-Vallejo, Ricardo; Chicarro, J. L.; Calvo Lobo, César
Abstract: Oxidative stress has been proposed as a significant part of the pathogenesis of fibromyalgia,
and the phase angle in bioelectrical impedance analysis has been explored as a potential technique to
screen oxidative abnormalities. This study recruited 35 women with fibromyalgia and 35 healthy
women, who underwent bioelectrical impedance analysis and maximum isometric handgrip strength
tests. Women with fibromyalgia showed lower bilateral handgrip strength (right hand: 16.39 ± 5.87
vs. 27.53 ± 4.09, p < 0.001; left hand: 16.31 ± 5.51 vs. 27.61 ± 4.14, p < 0.001), as well as higher body
fat mass (27.14 ± 10.21 vs. 19.94 ± 7.25, p = 0.002), body fat percentage (37.80 ± 8.32 vs. 30.63 ± 7.77,
p < 0.001), and visceral fat area (136.76 ± 55.31 vs. 91.65 ± 42.04, p < 0.01) compared with healthy
women. There was no statistically significant difference in muscle mass between groups, but women
with fibromyalgia showed lower phase angles in all body regions when compared with healthy
control women (right arm: 4.42 ± 0.51 vs. 4.97 ± 0.48, p < 0.01; left arm: 4.23 ± 0.48 vs. 4.78 ± 0.50,
p < 0.001; trunk: 5.62 ± 0.77 vs. 6.78 ± 0.84, p < 0.001; right leg: 5.28 ± 0.56 vs. 5.81 ± 0.60, p < 0.001;
left leg: 5.07 ± 0.51 vs. 5.69 ± 0.58, p < 0.001; whole body: 4.81 ± 0.47 vs. 5.39 ± 0.49, p < 0.001).
Moreover, whole-body phase-angle reduction was only predicted by the presence of fibromyalgia
(R 2 = 0.264; β = 0.639; F(1,68) = 24.411; p < 0.001). Our study revealed significantly lower phase angle
values, lower handgrip strength, and higher fat levels in women with fibromyalgia compared to
healthy controls, which are data of clinical relevance when dealing with such patients.
Universal identifier: https://hdl.handle.net/10641/3595
Date: 2023
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